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"../../../node_modules/react-hook-form/src/utils/isWeb.ts", "../../../node_modules/react-hook-form/src/utils/cloneObject.ts", "../../../node_modules/react-hook-form/src/utils/fillEmptyArray.ts", "../../../node_modules/react-hook-form/src/utils/getValidationModes.ts", "../../../node_modules/react-hook-form/src/utils/insert.ts", "../../../node_modules/react-hook-form/src/utils/move.ts", "../../../node_modules/react-hook-form/src/utils/prepend.ts", "../../../node_modules/react-hook-form/src/utils/remove.ts", "../../../node_modules/react-hook-form/src/utils/swap.ts", "../../../node_modules/react-hook-form/src/utils/unset.ts", "../../../node_modules/react-hook-form/src/utils/update.ts", "../../../node_modules/react-hook-form/src/useFieldArray.ts", "../../../node_modules/react-hook-form/src/utils/createSubject.ts", "../../../node_modules/react-hook-form/src/utils/isPrimitive.ts", "../../../node_modules/react-hook-form/src/utils/deepEqual.ts", "../../../node_modules/react-hook-form/src/utils/isHTMLElement.ts", "../../../node_modules/react-hook-form/src/utils/isMultipleSelect.ts", "../../../node_modules/react-hook-form/src/utils/isRadioOrCheckbox.ts", "../../../node_modules/react-hook-form/src/utils/live.ts", "../../../node_modules/react-hook-form/src/logic/getDirtyFields.ts", "../../../node_modules/react-hook-form/src/logic/getFieldValueAs.ts", "../../../node_modules/react-hook-form/src/logic/getFieldValue.ts", "../../../node_modules/react-hook-form/src/logic/getResolverOptions.ts", "../../../node_modules/react-hook-form/src/logic/getRuleValue.ts", "../../../node_modules/react-hook-form/src/logic/hasValidation.ts", "../../../node_modules/react-hook-form/src/logic/schemaErrorLookup.ts", "../../../node_modules/react-hook-form/src/logic/skipValidation.ts", "../../../node_modules/react-hook-form/src/logic/unsetEmptyArray.ts", "../../../node_modules/react-hook-form/src/logic/createFormControl.ts", "../../../node_modules/react-hook-form/src/useForm.ts", "../../javascript/components/MessageBox.tsx", "../../javascript/form.js", "../../javascript/components/MapLocation.tsx"], "sourcesContent": ["export default {\n logger: self.console,\n WebSocket: self.WebSocket\n}\n", "import adapters from \"./adapters\"\n\n// The logger is disabled by default. You can enable it with:\n//\n// ActionCable.logger.enabled = true\n//\n// Example:\n//\n// import * as ActionCable from '@rails/actioncable'\n//\n// ActionCable.logger.enabled = true\n// ActionCable.logger.log('Connection Established.')\n//\n\nexport default {\n log(...messages) {\n if (this.enabled) {\n messages.push(Date.now())\n adapters.logger.log(\"[ActionCable]\", ...messages)\n }\n },\n}\n", "import logger from \"./logger\"\n\n// Responsible for ensuring the cable connection is in good health by validating the heartbeat pings sent from the server, and attempting\n// revival reconnections if things go astray. Internal class, not intended for direct user manipulation.\n\nconst now = () => new Date().getTime()\n\nconst secondsSince = time => (now() - time) / 1000\n\nclass ConnectionMonitor {\n constructor(connection) {\n this.visibilityDidChange = this.visibilityDidChange.bind(this)\n this.connection = connection\n this.reconnectAttempts = 0\n }\n\n start() {\n if (!this.isRunning()) {\n this.startedAt = now()\n delete this.stoppedAt\n this.startPolling()\n addEventListener(\"visibilitychange\", this.visibilityDidChange)\n logger.log(`ConnectionMonitor started. stale threshold = ${this.constructor.staleThreshold} s`)\n }\n }\n\n stop() {\n if (this.isRunning()) {\n this.stoppedAt = now()\n this.stopPolling()\n removeEventListener(\"visibilitychange\", this.visibilityDidChange)\n logger.log(\"ConnectionMonitor stopped\")\n }\n }\n\n isRunning() {\n return this.startedAt && !this.stoppedAt\n }\n\n recordPing() {\n this.pingedAt = now()\n }\n\n recordConnect() {\n this.reconnectAttempts = 0\n this.recordPing()\n delete this.disconnectedAt\n logger.log(\"ConnectionMonitor recorded connect\")\n }\n\n recordDisconnect() {\n this.disconnectedAt = now()\n logger.log(\"ConnectionMonitor recorded disconnect\")\n }\n\n // Private\n\n startPolling() {\n this.stopPolling()\n this.poll()\n }\n\n stopPolling() {\n clearTimeout(this.pollTimeout)\n }\n\n poll() {\n this.pollTimeout = setTimeout(() => {\n this.reconnectIfStale()\n this.poll()\n }\n , this.getPollInterval())\n }\n\n getPollInterval() {\n const { staleThreshold, reconnectionBackoffRate } = this.constructor\n const backoff = Math.pow(1 + reconnectionBackoffRate, Math.min(this.reconnectAttempts, 10))\n const jitterMax = this.reconnectAttempts === 0 ? 1.0 : reconnectionBackoffRate\n const jitter = jitterMax * Math.random()\n return staleThreshold * 1000 * backoff * (1 + jitter)\n }\n\n reconnectIfStale() {\n if (this.connectionIsStale()) {\n logger.log(`ConnectionMonitor detected stale connection. reconnectAttempts = ${this.reconnectAttempts}, time stale = ${secondsSince(this.refreshedAt)} s, stale threshold = ${this.constructor.staleThreshold} s`)\n this.reconnectAttempts++\n if (this.disconnectedRecently()) {\n logger.log(`ConnectionMonitor skipping reopening recent disconnect. time disconnected = ${secondsSince(this.disconnectedAt)} s`)\n } else {\n logger.log(\"ConnectionMonitor reopening\")\n this.connection.reopen()\n }\n }\n }\n\n get refreshedAt() {\n return this.pingedAt ? this.pingedAt : this.startedAt\n }\n\n connectionIsStale() {\n return secondsSince(this.refreshedAt) > this.constructor.staleThreshold\n }\n\n disconnectedRecently() {\n return this.disconnectedAt && (secondsSince(this.disconnectedAt) < this.constructor.staleThreshold)\n }\n\n visibilityDidChange() {\n if (document.visibilityState === \"visible\") {\n setTimeout(() => {\n if (this.connectionIsStale() || !this.connection.isOpen()) {\n logger.log(`ConnectionMonitor reopening stale connection on visibilitychange. visibilityState = ${document.visibilityState}`)\n this.connection.reopen()\n }\n }\n , 200)\n }\n }\n\n}\n\nConnectionMonitor.staleThreshold = 6 // Server::Connections::BEAT_INTERVAL * 2 (missed two pings)\nConnectionMonitor.reconnectionBackoffRate = 0.15\n\nexport default ConnectionMonitor\n", "export default {\n \"message_types\": {\n \"welcome\": \"welcome\",\n \"disconnect\": \"disconnect\",\n \"ping\": \"ping\",\n \"confirmation\": \"confirm_subscription\",\n \"rejection\": \"reject_subscription\"\n },\n \"disconnect_reasons\": {\n \"unauthorized\": \"unauthorized\",\n \"invalid_request\": \"invalid_request\",\n \"server_restart\": \"server_restart\"\n },\n \"default_mount_path\": \"/cable\",\n \"protocols\": [\n \"actioncable-v1-json\",\n \"actioncable-unsupported\"\n ]\n}\n", "import adapters from \"./adapters\"\nimport ConnectionMonitor from \"./connection_monitor\"\nimport INTERNAL from \"./internal\"\nimport logger from \"./logger\"\n\n// Encapsulate the cable connection held by the consumer. This is an internal class not intended for direct user manipulation.\n\nconst {message_types, protocols} = INTERNAL\nconst supportedProtocols = protocols.slice(0, protocols.length - 1)\n\nconst indexOf = [].indexOf\n\nclass Connection {\n constructor(consumer) {\n this.open = this.open.bind(this)\n this.consumer = consumer\n this.subscriptions = this.consumer.subscriptions\n this.monitor = new ConnectionMonitor(this)\n this.disconnected = true\n }\n\n send(data) {\n if (this.isOpen()) {\n this.webSocket.send(JSON.stringify(data))\n return true\n } else {\n return false\n }\n }\n\n open() {\n if (this.isActive()) {\n logger.log(`Attempted to open WebSocket, but existing socket is ${this.getState()}`)\n return false\n } else {\n logger.log(`Opening WebSocket, current state is ${this.getState()}, subprotocols: ${protocols}`)\n if (this.webSocket) { this.uninstallEventHandlers() }\n this.webSocket = new adapters.WebSocket(this.consumer.url, protocols)\n this.installEventHandlers()\n this.monitor.start()\n return true\n }\n }\n\n close({allowReconnect} = {allowReconnect: true}) {\n if (!allowReconnect) { this.monitor.stop() }\n if (this.isActive()) {\n return this.webSocket.close()\n }\n }\n\n reopen() {\n logger.log(`Reopening WebSocket, current state is ${this.getState()}`)\n if (this.isActive()) {\n try {\n return this.close()\n } catch (error) {\n logger.log(\"Failed to reopen WebSocket\", error)\n }\n finally {\n logger.log(`Reopening WebSocket in ${this.constructor.reopenDelay}ms`)\n setTimeout(this.open, this.constructor.reopenDelay)\n }\n } else {\n return this.open()\n }\n }\n\n getProtocol() {\n if (this.webSocket) {\n return this.webSocket.protocol\n }\n }\n\n isOpen() {\n return this.isState(\"open\")\n }\n\n isActive() {\n return this.isState(\"open\", \"connecting\")\n }\n\n // Private\n\n isProtocolSupported() {\n return indexOf.call(supportedProtocols, this.getProtocol()) >= 0\n }\n\n isState(...states) {\n return indexOf.call(states, this.getState()) >= 0\n }\n\n getState() {\n if (this.webSocket) {\n for (let state in adapters.WebSocket) {\n if (adapters.WebSocket[state] === this.webSocket.readyState) {\n return state.toLowerCase()\n }\n }\n }\n return null\n }\n\n installEventHandlers() {\n for (let eventName in this.events) {\n const handler = this.events[eventName].bind(this)\n this.webSocket[`on${eventName}`] = handler\n }\n }\n\n uninstallEventHandlers() {\n for (let eventName in this.events) {\n this.webSocket[`on${eventName}`] = function() {}\n }\n }\n\n}\n\nConnection.reopenDelay = 500\n\nConnection.prototype.events = {\n message(event) {\n if (!this.isProtocolSupported()) { return }\n const {identifier, message, reason, reconnect, type} = JSON.parse(event.data)\n switch (type) {\n case message_types.welcome:\n this.monitor.recordConnect()\n return this.subscriptions.reload()\n case message_types.disconnect:\n logger.log(`Disconnecting. Reason: ${reason}`)\n return this.close({allowReconnect: reconnect})\n case message_types.ping:\n return this.monitor.recordPing()\n case message_types.confirmation:\n this.subscriptions.confirmSubscription(identifier)\n return this.subscriptions.notify(identifier, \"connected\")\n case message_types.rejection:\n return this.subscriptions.reject(identifier)\n default:\n return this.subscriptions.notify(identifier, \"received\", message)\n }\n },\n\n open() {\n logger.log(`WebSocket onopen event, using '${this.getProtocol()}' subprotocol`)\n this.disconnected = false\n if (!this.isProtocolSupported()) {\n logger.log(\"Protocol is unsupported. Stopping monitor and disconnecting.\")\n return this.close({allowReconnect: false})\n }\n },\n\n close(event) {\n logger.log(\"WebSocket onclose event\")\n if (this.disconnected) { return }\n this.disconnected = true\n this.monitor.recordDisconnect()\n return this.subscriptions.notifyAll(\"disconnected\", {willAttemptReconnect: this.monitor.isRunning()})\n },\n\n error() {\n logger.log(\"WebSocket onerror event\")\n }\n}\n\nexport default Connection\n", "// A new subscription is created through the ActionCable.Subscriptions instance available on the consumer.\n// It provides a number of callbacks and a method for calling remote procedure calls on the corresponding\n// Channel instance on the server side.\n//\n// An example demonstrates the basic functionality:\n//\n// App.appearance = App.cable.subscriptions.create(\"AppearanceChannel\", {\n// connected() {\n// // Called once the subscription has been successfully completed\n// },\n//\n// disconnected({ willAttemptReconnect: boolean }) {\n// // Called when the client has disconnected with the server.\n// // The object will have an `willAttemptReconnect` property which\n// // says whether the client has the intention of attempting\n// // to reconnect.\n// },\n//\n// appear() {\n// this.perform('appear', {appearing_on: this.appearingOn()})\n// },\n//\n// away() {\n// this.perform('away')\n// },\n//\n// appearingOn() {\n// $('main').data('appearing-on')\n// }\n// })\n//\n// The methods #appear and #away forward their intent to the remote AppearanceChannel instance on the server\n// by calling the `perform` method with the first parameter being the action (which maps to AppearanceChannel#appear/away).\n// The second parameter is a hash that'll get JSON encoded and made available on the server in the data parameter.\n//\n// This is how the server component would look:\n//\n// class AppearanceChannel < ApplicationActionCable::Channel\n// def subscribed\n// current_user.appear\n// end\n//\n// def unsubscribed\n// current_user.disappear\n// end\n//\n// def appear(data)\n// current_user.appear on: data['appearing_on']\n// end\n//\n// def away\n// current_user.away\n// end\n// end\n//\n// The \"AppearanceChannel\" name is automatically mapped between the client-side subscription creation and the server-side Ruby class name.\n// The AppearanceChannel#appear/away public methods are exposed automatically to client-side invocation through the perform method.\n\nconst extend = function(object, properties) {\n if (properties != null) {\n for (let key in properties) {\n const value = properties[key]\n object[key] = value\n }\n }\n return object\n}\n\nexport default class Subscription {\n constructor(consumer, params = {}, mixin) {\n this.consumer = consumer\n this.identifier = JSON.stringify(params)\n extend(this, mixin)\n }\n\n // Perform a channel action with the optional data passed as an attribute\n perform(action, data = {}) {\n data.action = action\n return this.send(data)\n }\n\n send(data) {\n return this.consumer.send({command: \"message\", identifier: this.identifier, data: JSON.stringify(data)})\n }\n\n unsubscribe() {\n return this.consumer.subscriptions.remove(this)\n }\n}\n", "import logger from \"./logger\"\n\n// Responsible for ensuring channel subscribe command is confirmed, retrying until confirmation is received.\n// Internal class, not intended for direct user manipulation.\n\nclass SubscriptionGuarantor {\n constructor(subscriptions) {\n this.subscriptions = subscriptions\n this.pendingSubscriptions = []\n }\n\n guarantee(subscription) {\n if(this.pendingSubscriptions.indexOf(subscription) == -1){ \n logger.log(`SubscriptionGuarantor guaranteeing ${subscription.identifier}`)\n this.pendingSubscriptions.push(subscription) \n }\n else {\n logger.log(`SubscriptionGuarantor already guaranteeing ${subscription.identifier}`)\n }\n this.startGuaranteeing()\n }\n\n forget(subscription) {\n logger.log(`SubscriptionGuarantor forgetting ${subscription.identifier}`)\n this.pendingSubscriptions = (this.pendingSubscriptions.filter((s) => s !== subscription))\n }\n\n startGuaranteeing() {\n this.stopGuaranteeing()\n this.retrySubscribing()\n }\n \n stopGuaranteeing() {\n clearTimeout(this.retryTimeout)\n }\n\n retrySubscribing() {\n this.retryTimeout = setTimeout(() => {\n if (this.subscriptions && typeof(this.subscriptions.subscribe) === \"function\") {\n this.pendingSubscriptions.map((subscription) => {\n logger.log(`SubscriptionGuarantor resubscribing ${subscription.identifier}`)\n this.subscriptions.subscribe(subscription)\n })\n }\n }\n , 500)\n }\n}\n\nexport default SubscriptionGuarantor", "import Subscription from \"./subscription\"\nimport SubscriptionGuarantor from \"./subscription_guarantor\"\nimport logger from \"./logger\"\n\n// Collection class for creating (and internally managing) channel subscriptions.\n// The only method intended to be triggered by the user is ActionCable.Subscriptions#create,\n// and it should be called through the consumer like so:\n//\n// App = {}\n// App.cable = ActionCable.createConsumer(\"ws://example.com/accounts/1\")\n// App.appearance = App.cable.subscriptions.create(\"AppearanceChannel\")\n//\n// For more details on how you'd configure an actual channel subscription, see ActionCable.Subscription.\n\nexport default class Subscriptions {\n constructor(consumer) {\n this.consumer = consumer\n this.guarantor = new SubscriptionGuarantor(this)\n this.subscriptions = []\n }\n\n create(channelName, mixin) {\n const channel = channelName\n const params = typeof channel === \"object\" ? channel : {channel}\n const subscription = new Subscription(this.consumer, params, mixin)\n return this.add(subscription)\n }\n\n // Private\n\n add(subscription) {\n this.subscriptions.push(subscription)\n this.consumer.ensureActiveConnection()\n this.notify(subscription, \"initialized\")\n this.subscribe(subscription)\n return subscription\n }\n\n remove(subscription) {\n this.forget(subscription)\n if (!this.findAll(subscription.identifier).length) {\n this.sendCommand(subscription, \"unsubscribe\")\n }\n return subscription\n }\n\n reject(identifier) {\n return this.findAll(identifier).map((subscription) => {\n this.forget(subscription)\n this.notify(subscription, \"rejected\")\n return subscription\n })\n }\n\n forget(subscription) {\n this.guarantor.forget(subscription)\n this.subscriptions = (this.subscriptions.filter((s) => s !== subscription))\n return subscription\n }\n\n findAll(identifier) {\n return this.subscriptions.filter((s) => s.identifier === identifier)\n }\n\n reload() {\n return this.subscriptions.map((subscription) =>\n this.subscribe(subscription))\n }\n\n notifyAll(callbackName, ...args) {\n return this.subscriptions.map((subscription) =>\n this.notify(subscription, callbackName, ...args))\n }\n\n notify(subscription, callbackName, ...args) {\n let subscriptions\n if (typeof subscription === \"string\") {\n subscriptions = this.findAll(subscription)\n } else {\n subscriptions = [subscription]\n }\n\n return subscriptions.map((subscription) =>\n (typeof subscription[callbackName] === \"function\" ? subscription[callbackName](...args) : undefined))\n }\n\n subscribe(subscription) {\n if (this.sendCommand(subscription, \"subscribe\")) {\n this.guarantor.guarantee(subscription)\n }\n }\n\n confirmSubscription(identifier) {\n logger.log(`Subscription confirmed ${identifier}`)\n this.findAll(identifier).map((subscription) =>\n this.guarantor.forget(subscription))\n }\n\n sendCommand(subscription, command) {\n const {identifier} = subscription\n return this.consumer.send({command, identifier})\n }\n}\n", "import Connection from \"./connection\"\nimport Subscriptions from \"./subscriptions\"\n\n// The ActionCable.Consumer establishes the connection to a server-side Ruby Connection object. Once established,\n// the ActionCable.ConnectionMonitor will ensure that its properly maintained through heartbeats and checking for stale updates.\n// The Consumer instance is also the gateway to establishing subscriptions to desired channels through the #createSubscription\n// method.\n//\n// The following example shows how this can be set up:\n//\n// App = {}\n// App.cable = ActionCable.createConsumer(\"ws://example.com/accounts/1\")\n// App.appearance = App.cable.subscriptions.create(\"AppearanceChannel\")\n//\n// For more details on how you'd configure an actual channel subscription, see ActionCable.Subscription.\n//\n// When a consumer is created, it automatically connects with the server.\n//\n// To disconnect from the server, call\n//\n// App.cable.disconnect()\n//\n// and to restart the connection:\n//\n// App.cable.connect()\n//\n// Any channel subscriptions which existed prior to disconnecting will\n// automatically resubscribe.\n\nexport default class Consumer {\n constructor(url) {\n this._url = url\n this.subscriptions = new Subscriptions(this)\n this.connection = new Connection(this)\n }\n\n get url() {\n return createWebSocketURL(this._url)\n }\n\n send(data) {\n return this.connection.send(data)\n }\n\n connect() {\n return this.connection.open()\n }\n\n disconnect() {\n return this.connection.close({allowReconnect: false})\n }\n\n ensureActiveConnection() {\n if (!this.connection.isActive()) {\n return this.connection.open()\n }\n }\n}\n\nexport function createWebSocketURL(url) {\n if (typeof url === \"function\") {\n url = url()\n }\n\n if (url && !/^wss?:/i.test(url)) {\n const a = document.createElement(\"a\")\n a.href = url\n // Fix populating Location properties in IE. Otherwise, protocol will be blank.\n a.href = a.href\n a.protocol = a.protocol.replace(\"http\", \"ws\")\n return a.href\n } else {\n return url\n }\n}\n", "import Connection from \"./connection\"\nimport ConnectionMonitor from \"./connection_monitor\"\nimport Consumer, { createWebSocketURL } from \"./consumer\"\nimport INTERNAL from \"./internal\"\nimport Subscription from \"./subscription\"\nimport Subscriptions from \"./subscriptions\"\nimport SubscriptionGuarantor from \"./subscription_guarantor\"\nimport adapters from \"./adapters\"\nimport logger from \"./logger\"\n\nexport {\n Connection,\n ConnectionMonitor,\n Consumer,\n INTERNAL,\n Subscription,\n Subscriptions,\n SubscriptionGuarantor,\n adapters,\n createWebSocketURL,\n logger,\n}\n\nexport function createConsumer(url = getConfig(\"url\") || INTERNAL.default_mount_path) {\n return new Consumer(url)\n}\n\nexport function getConfig(name) {\n const element = document.head.querySelector(`meta[name='action-cable-${name}']`)\n if (element) {\n return element.getAttribute(\"content\")\n }\n}\n", "/**\n * @license React\n * react.production.min.js\n *\n * Copyright (c) Facebook, Inc. and its affiliates.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n'use strict';var l=Symbol.for(\"react.element\"),n=Symbol.for(\"react.portal\"),p=Symbol.for(\"react.fragment\"),q=Symbol.for(\"react.strict_mode\"),r=Symbol.for(\"react.profiler\"),t=Symbol.for(\"react.provider\"),u=Symbol.for(\"react.context\"),v=Symbol.for(\"react.forward_ref\"),w=Symbol.for(\"react.suspense\"),x=Symbol.for(\"react.memo\"),y=Symbol.for(\"react.lazy\"),z=Symbol.iterator;function A(a){if(null===a||\"object\"!==typeof a)return null;a=z&&a[z]||a[\"@@iterator\"];return\"function\"===typeof a?a:null}\nvar B={isMounted:function(){return!1},enqueueForceUpdate:function(){},enqueueReplaceState:function(){},enqueueSetState:function(){}},C=Object.assign,D={};function E(a,b,e){this.props=a;this.context=b;this.refs=D;this.updater=e||B}E.prototype.isReactComponent={};\nE.prototype.setState=function(a,b){if(\"object\"!==typeof a&&\"function\"!==typeof a&&null!=a)throw Error(\"setState(...): takes an object of state variables to update or a function which returns an object of state variables.\");this.updater.enqueueSetState(this,a,b,\"setState\")};E.prototype.forceUpdate=function(a){this.updater.enqueueForceUpdate(this,a,\"forceUpdate\")};function F(){}F.prototype=E.prototype;function G(a,b,e){this.props=a;this.context=b;this.refs=D;this.updater=e||B}var H=G.prototype=new F;\nH.constructor=G;C(H,E.prototype);H.isPureReactComponent=!0;var I=Array.isArray,J=Object.prototype.hasOwnProperty,K={current:null},L={key:!0,ref:!0,__self:!0,__source:!0};\nfunction M(a,b,e){var d,c={},k=null,h=null;if(null!=b)for(d in void 0!==b.ref&&(h=b.ref),void 0!==b.key&&(k=\"\"+b.key),b)J.call(b,d)&&!L.hasOwnProperty(d)&&(c[d]=b[d]);var g=arguments.length-2;if(1===g)c.children=e;else if(1>>1,e=a[d];if(0>>1;dg(C,c))ng(x,C)?(a[d]=x,a[n]=c,d=n):(a[d]=C,a[m]=c,d=m);else if(ng(x,c))a[d]=x,a[n]=c,d=n;else break a}}return b}\nfunction g(a,b){var c=a.sortIndex-b.sortIndex;return 0!==c?c:a.id-b.id}if(\"object\"===typeof performance&&\"function\"===typeof performance.now){var l=performance;exports.unstable_now=function(){return l.now()}}else{var p=Date,q=p.now();exports.unstable_now=function(){return p.now()-q}}var r=[],t=[],u=1,v=null,y=3,z=!1,A=!1,B=!1,D=\"function\"===typeof setTimeout?setTimeout:null,E=\"function\"===typeof clearTimeout?clearTimeout:null,F=\"undefined\"!==typeof setImmediate?setImmediate:null;\n\"undefined\"!==typeof navigator&&void 0!==navigator.scheduling&&void 0!==navigator.scheduling.isInputPending&&navigator.scheduling.isInputPending.bind(navigator.scheduling);function G(a){for(var b=h(t);null!==b;){if(null===b.callback)k(t);else if(b.startTime<=a)k(t),b.sortIndex=b.expirationTime,f(r,b);else break;b=h(t)}}function H(a){B=!1;G(a);if(!A)if(null!==h(r))A=!0,I(J);else{var b=h(t);null!==b&&K(H,b.startTime-a)}}\nfunction J(a,b){A=!1;B&&(B=!1,E(L),L=-1);z=!0;var c=y;try{G(b);for(v=h(r);null!==v&&(!(v.expirationTime>b)||a&&!M());){var d=v.callback;if(\"function\"===typeof d){v.callback=null;y=v.priorityLevel;var e=d(v.expirationTime<=b);b=exports.unstable_now();\"function\"===typeof e?v.callback=e:v===h(r)&&k(r);G(b)}else k(r);v=h(r)}if(null!==v)var w=!0;else{var m=h(t);null!==m&&K(H,m.startTime-b);w=!1}return w}finally{v=null,y=c,z=!1}}var N=!1,O=null,L=-1,P=5,Q=-1;\nfunction M(){return exports.unstable_now()-Qa||125d?(a.sortIndex=c,f(t,a),null===h(r)&&a===h(t)&&(B?(E(L),L=-1):B=!0,K(H,c-d))):(a.sortIndex=e,f(r,a),A||z||(A=!0,I(J)));return a};\nexports.unstable_shouldYield=M;exports.unstable_wrapCallback=function(a){var b=y;return function(){var c=y;y=b;try{return a.apply(this,arguments)}finally{y=c}}};\n", "'use strict';\n\nif (process.env.NODE_ENV === 'production') {\n module.exports = require('./cjs/scheduler.production.min.js');\n} else {\n module.exports = require('./cjs/scheduler.development.js');\n}\n", "/**\n * @license React\n * react-dom.production.min.js\n *\n * Copyright (c) Facebook, Inc. and its affiliates.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n/*\n Modernizr 3.0.0pre (Custom Build) | MIT\n*/\n'use strict';var aa=require(\"react\"),ca=require(\"scheduler\");function p(a){for(var b=\"https://reactjs.org/docs/error-decoder.html?invariant=\"+a,c=1;cb}return!1}function v(a,b,c,d,e,f,g){this.acceptsBooleans=2===b||3===b||4===b;this.attributeName=d;this.attributeNamespace=e;this.mustUseProperty=c;this.propertyName=a;this.type=b;this.sanitizeURL=f;this.removeEmptyString=g}var z={};\n\"children dangerouslySetInnerHTML defaultValue defaultChecked innerHTML suppressContentEditableWarning suppressHydrationWarning style\".split(\" 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a=e.options.defaultAnimation;e.animator.start([{distance:r,duration:f(i||a,\"duration\",500),easing:f(i||a,\"easing\",(function(n){return 1+--n*n*n*n*n}))}])}},on:function(n,t,e){void 0===e&&(e=!1),i[n]||(i[n]=[]);var r=i[n].indexOf(t);r>-1?e&&delete i[n][r]:e||i[n].push(t)},options:n},function(){if(e.track=b(e),e.animator=g(e),t)for(var n=0,i=t;n = (n) => n <= 2\n * const g: Predicate = (n) => n >= 0\n *\n * const S1 = getSemigroup(B.SemigroupAll)()\n *\n * assert.deepStrictEqual(S1.concat(f, g)(1), true)\n * assert.deepStrictEqual(S1.concat(f, g)(3), false)\n *\n * const S2 = getSemigroup(B.SemigroupAny)()\n *\n * assert.deepStrictEqual(S2.concat(f, g)(1), true)\n * assert.deepStrictEqual(S2.concat(f, g)(3), true)\n *\n * @category instances\n * @since 2.10.0\n */\nvar getSemigroup = function (S) {\n return function () { return ({\n concat: function (f, g) { return function (a) { return S.concat(f(a), g(a)); }; }\n }); };\n};\nexports.getSemigroup = getSemigroup;\n/**\n * Unary functions form a monoid as long as you can provide a monoid for the codomain.\n *\n * @example\n * import { Predicate } from 'fp-ts/Predicate'\n * import { getMonoid } from 'fp-ts/function'\n * import * as B from 'fp-ts/boolean'\n *\n * const f: Predicate = (n) => n <= 2\n * const g: Predicate = (n) => n >= 0\n *\n * const M1 = getMonoid(B.MonoidAll)()\n *\n * assert.deepStrictEqual(M1.concat(f, g)(1), true)\n * assert.deepStrictEqual(M1.concat(f, g)(3), false)\n *\n * const M2 = getMonoid(B.MonoidAny)()\n *\n * assert.deepStrictEqual(M2.concat(f, g)(1), true)\n * assert.deepStrictEqual(M2.concat(f, g)(3), true)\n *\n * @category instances\n * @since 2.10.0\n */\nvar getMonoid = function (M) {\n var getSemigroupM = (0, exports.getSemigroup)(M);\n return function () { return ({\n concat: getSemigroupM().concat,\n empty: function () { return M.empty; }\n }); };\n};\nexports.getMonoid = getMonoid;\n/**\n * @category instances\n * @since 2.10.0\n */\nvar getSemiring = function (S) { return ({\n add: function (f, g) { return function (x) { return S.add(f(x), g(x)); }; },\n zero: function () { return S.zero; },\n mul: function (f, g) { return function (x) { return S.mul(f(x), g(x)); }; },\n one: function () { return S.one; }\n}); };\nexports.getSemiring = getSemiring;\n/**\n * @category instances\n * @since 2.10.0\n */\nvar getRing = function (R) {\n var S = (0, exports.getSemiring)(R);\n return {\n add: S.add,\n mul: S.mul,\n one: S.one,\n zero: S.zero,\n sub: function (f, g) { return function (x) { return R.sub(f(x), g(x)); }; }\n };\n};\nexports.getRing = getRing;\n// -------------------------------------------------------------------------------------\n// utils\n// -------------------------------------------------------------------------------------\n/**\n * @since 2.11.0\n */\nvar apply = function (a) {\n return function (f) {\n return f(a);\n };\n};\nexports.apply = apply;\n/**\n * @since 2.0.0\n */\nfunction identity(a) {\n return a;\n}\nexports.identity = identity;\n/**\n * @since 2.0.0\n */\nexports.unsafeCoerce = identity;\n/**\n * @since 2.0.0\n */\nfunction constant(a) {\n return function () { return a; };\n}\nexports.constant = constant;\n/**\n * A thunk that returns always `true`.\n *\n * @since 2.0.0\n */\nexports.constTrue = constant(true);\n/**\n * A thunk that returns always `false`.\n *\n * @since 2.0.0\n */\nexports.constFalse = constant(false);\n/**\n * A thunk that returns always `null`.\n *\n * @since 2.0.0\n */\nexports.constNull = constant(null);\n/**\n * A thunk that returns always `undefined`.\n *\n * @since 2.0.0\n */\nexports.constUndefined = constant(undefined);\n/**\n * A thunk that returns always `void`.\n *\n * @since 2.0.0\n */\nexports.constVoid = exports.constUndefined;\nfunction flip(f) {\n return function () {\n var args = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n args[_i] = arguments[_i];\n }\n if (args.length > 1) {\n return f(args[1], args[0]);\n }\n return function (a) { return f(a)(args[0]); };\n };\n}\nexports.flip = flip;\nfunction flow(ab, bc, cd, de, ef, fg, gh, hi, ij) {\n switch (arguments.length) {\n case 1:\n return ab;\n case 2:\n return function () {\n return bc(ab.apply(this, arguments));\n };\n case 3:\n return function () {\n return cd(bc(ab.apply(this, arguments)));\n };\n case 4:\n return function () {\n return de(cd(bc(ab.apply(this, arguments))));\n };\n case 5:\n return function () {\n return ef(de(cd(bc(ab.apply(this, arguments)))));\n };\n case 6:\n return function () {\n return fg(ef(de(cd(bc(ab.apply(this, arguments))))));\n };\n case 7:\n return function () {\n return gh(fg(ef(de(cd(bc(ab.apply(this, arguments)))))));\n };\n case 8:\n return function () {\n return hi(gh(fg(ef(de(cd(bc(ab.apply(this, arguments))))))));\n };\n case 9:\n return function () {\n return ij(hi(gh(fg(ef(de(cd(bc(ab.apply(this, arguments)))))))));\n };\n }\n return;\n}\nexports.flow = flow;\n/**\n * @since 2.0.0\n */\nfunction tuple() {\n var t = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n t[_i] = arguments[_i];\n }\n return t;\n}\nexports.tuple = tuple;\n/**\n * @since 2.0.0\n */\nfunction increment(n) {\n return n + 1;\n}\nexports.increment = increment;\n/**\n * @since 2.0.0\n */\nfunction decrement(n) {\n return n - 1;\n}\nexports.decrement = decrement;\n/**\n * @since 2.0.0\n */\nfunction absurd(_) {\n throw new Error('Called `absurd` function which should be uncallable');\n}\nexports.absurd = absurd;\n/**\n * Creates a tupled version of this function: instead of `n` arguments, it accepts a single tuple argument.\n *\n * @example\n * import { tupled } from 'fp-ts/function'\n *\n * const add = tupled((x: number, y: number): number => x + y)\n *\n * assert.strictEqual(add([1, 2]), 3)\n *\n * @since 2.4.0\n */\nfunction tupled(f) {\n return function (a) { return f.apply(void 0, a); };\n}\nexports.tupled = tupled;\n/**\n * Inverse function of `tupled`\n *\n * @since 2.4.0\n */\nfunction untupled(f) {\n return function () {\n var a = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n a[_i] = arguments[_i];\n }\n return f(a);\n };\n}\nexports.untupled = untupled;\nfunction pipe(a, ab, bc, cd, de, ef, fg, gh, hi) {\n switch (arguments.length) {\n case 1:\n return a;\n case 2:\n return ab(a);\n case 3:\n return bc(ab(a));\n case 4:\n return cd(bc(ab(a)));\n case 5:\n return de(cd(bc(ab(a))));\n case 6:\n return ef(de(cd(bc(ab(a)))));\n case 7:\n return fg(ef(de(cd(bc(ab(a))))));\n case 8:\n return gh(fg(ef(de(cd(bc(ab(a)))))));\n case 9:\n return hi(gh(fg(ef(de(cd(bc(ab(a))))))));\n default: {\n var ret = arguments[0];\n for (var i = 1; i < arguments.length; i++) {\n ret = arguments[i](ret);\n }\n return ret;\n }\n }\n}\nexports.pipe = pipe;\n/**\n * Type hole simulation\n *\n * @since 2.7.0\n */\nexports.hole = absurd;\n/**\n * @since 2.11.0\n */\nvar SK = function (_, b) { return b; };\nexports.SK = SK;\n/**\n * Use `Predicate` module instead.\n *\n * @category zone of death\n * @since 2.0.0\n * @deprecated\n */\nfunction not(predicate) {\n return function (a) { return !predicate(a); };\n}\nexports.not = not;\n/**\n * Use `Endomorphism` module instead.\n *\n * @category zone of death\n * @since 2.10.0\n * @deprecated\n */\nvar getEndomorphismMonoid = function () { return ({\n concat: function (first, second) { return flow(first, second); },\n empty: identity\n}); };\nexports.getEndomorphismMonoid = getEndomorphismMonoid;\n/** @internal */\nvar dual = function (arity, body) {\n var isDataFirst = typeof arity === 'number' ? function (args) { return args.length >= arity; } : arity;\n return function () {\n var args = Array.from(arguments);\n if (isDataFirst(arguments)) {\n return body.apply(this, args);\n }\n return function (self) { return body.apply(void 0, __spreadArray([self], args, false)); };\n };\n};\nexports.dual = dual;\n", "/* global Map:readonly, Set:readonly, ArrayBuffer:readonly */\n\nvar hasElementType = typeof Element !== 'undefined';\nvar hasMap = typeof Map === 'function';\nvar hasSet = typeof Set === 'function';\nvar hasArrayBuffer = typeof ArrayBuffer === 'function' && !!ArrayBuffer.isView;\n\n// Note: We **don't** need `envHasBigInt64Array` in fde es6/index.js\n\nfunction equal(a, b) {\n // START: fast-deep-equal es6/index.js 3.1.3\n if (a === b) return true;\n\n if (a && b && typeof a == 'object' && typeof b == 'object') {\n if (a.constructor !== b.constructor) return false;\n\n var length, i, keys;\n if (Array.isArray(a)) {\n length = a.length;\n if (length != b.length) return false;\n for (i = length; i-- !== 0;)\n if (!equal(a[i], b[i])) return false;\n return true;\n }\n\n // START: Modifications:\n // 1. Extra `has &&` helpers in initial condition allow es6 code\n // to co-exist with es5.\n // 2. Replace `for of` with es5 compliant iteration using `for`.\n // Basically, take:\n //\n // ```js\n // for (i of a.entries())\n // if (!b.has(i[0])) return false;\n // ```\n //\n // ... and convert to:\n //\n // ```js\n // it = a.entries();\n // while (!(i = it.next()).done)\n // if (!b.has(i.value[0])) return false;\n // ```\n //\n // **Note**: `i` access switches to `i.value`.\n var it;\n if (hasMap && (a instanceof Map) && (b instanceof Map)) {\n if (a.size !== b.size) return false;\n it = a.entries();\n while (!(i = it.next()).done)\n if (!b.has(i.value[0])) return false;\n it = a.entries();\n while (!(i = it.next()).done)\n if (!equal(i.value[1], b.get(i.value[0]))) return false;\n return true;\n }\n\n if (hasSet && (a instanceof Set) && (b instanceof Set)) {\n if (a.size !== b.size) return false;\n it = a.entries();\n while (!(i = it.next()).done)\n if (!b.has(i.value[0])) return false;\n return true;\n }\n // END: Modifications\n\n if (hasArrayBuffer && ArrayBuffer.isView(a) && ArrayBuffer.isView(b)) {\n length = a.length;\n if (length != b.length) return false;\n for (i = length; i-- !== 0;)\n if (a[i] !== b[i]) return false;\n return true;\n }\n\n if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags;\n // START: Modifications:\n // Apply guards for `Object.create(null)` handling. See:\n // - https://github.com/FormidableLabs/react-fast-compare/issues/64\n // - https://github.com/epoberezkin/fast-deep-equal/issues/49\n if (a.valueOf !== Object.prototype.valueOf && typeof a.valueOf === 'function' && typeof b.valueOf === 'function') return a.valueOf() === b.valueOf();\n if (a.toString !== Object.prototype.toString && typeof a.toString === 'function' && typeof b.toString === 'function') return a.toString() === b.toString();\n // END: Modifications\n\n keys = Object.keys(a);\n length = keys.length;\n if (length !== Object.keys(b).length) return false;\n\n for (i = length; i-- !== 0;)\n if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false;\n // END: fast-deep-equal\n\n // START: react-fast-compare\n // custom handling for DOM elements\n if (hasElementType && a instanceof Element) return false;\n\n // custom handling for React/Preact\n for (i = length; i-- !== 0;) {\n if ((keys[i] === '_owner' || keys[i] === '__v' || keys[i] === '__o') && a.$$typeof) {\n // React-specific: avoid traversing React elements' _owner\n // Preact-specific: avoid traversing Preact elements' __v and __o\n // __v = $_original / $_vnode\n // __o = $_owner\n // These properties contain circular references and are not needed when\n // comparing the actual elements (and not their owners)\n // .$$typeof and ._store on just reasonable markers of elements\n\n continue;\n }\n\n // all other properties should be traversed as usual\n if (!equal(a[keys[i]], b[keys[i]])) return false;\n }\n // END: react-fast-compare\n\n // START: fast-deep-equal\n return true;\n }\n\n return a !== a && b !== b;\n}\n// end fast-deep-equal\n\nmodule.exports = function isEqual(a, b) {\n try {\n return equal(a, b);\n } catch (error) {\n if (((error.message || '').match(/stack|recursion/i))) {\n // warn on circular references, don't crash\n // browsers give this different errors name and messages:\n // chrome/safari: \"RangeError\", \"Maximum call stack size exceeded\"\n // firefox: \"InternalError\", too much recursion\"\n // edge: \"Error\", \"Out of stack space\"\n console.warn('react-fast-compare cannot handle circular refs');\n return false;\n }\n // some other error. we should definitely know about these\n throw error;\n }\n};\n", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, "// @flow strict\n\ntype Config = {|\n API_URL: string,\n API_URL_REGEX: RegExp,\n API_TILEJSON_REGEX: RegExp,\n API_FONTS_REGEX: RegExp,\n API_SPRITE_REGEX: RegExp,\n API_STYLE_REGEX: RegExp,\n API_CDN_URL_REGEX: RegExp,\n EVENTS_URL: ?string,\n SESSION_PATH: string,\n FEEDBACK_URL: string,\n REQUIRE_ACCESS_TOKEN: boolean,\n TILE_URL_VERSION: string,\n RASTER_URL_PREFIX: string,\n RASTERARRAYS_URL_PREFIX: string,\n ACCESS_TOKEN: ?string,\n MAX_PARALLEL_IMAGE_REQUESTS: number,\n DRACO_URL: string,\n MESHOPT_URL: string,\n MESHOPT_SIMD_URL: string,\n DEFAULT_STYLE: string,\n GLYPHS_URL: string,\n|};\n\nlet mapboxHTTPURLRegex;\n\nconst config: Config = {\n API_URL: 'https://api.mapbox.com',\n get API_URL_REGEX () {\n if (mapboxHTTPURLRegex == null) {\n const prodMapboxHTTPURLRegex = /^((https?:)?\\/\\/)?([^\\/]+\\.)?mapbox\\.c(n|om)(\\/|\\?|$)/i;\n try {\n mapboxHTTPURLRegex = (process.env.API_URL_REGEX != null) ? new RegExp(process.env.API_URL_REGEX) : prodMapboxHTTPURLRegex;\n } catch (e) {\n mapboxHTTPURLRegex = prodMapboxHTTPURLRegex;\n }\n }\n\n return mapboxHTTPURLRegex;\n },\n get API_TILEJSON_REGEX() {\n // https://docs.mapbox.com/api/maps/mapbox-tiling-service/#retrieve-tilejson-metadata\n return /^((https?:)?\\/\\/)?([^\\/]+\\.)?mapbox\\.c(n|om)(\\/v[0-9]*\\/.*\\.json.*$)/i;\n },\n get API_SPRITE_REGEX() {\n // https://docs.mapbox.com/api/maps/styles/#retrieve-a-sprite-image-or-json\n return /^((https?:)?\\/\\/)?([^\\/]+\\.)?mapbox\\.c(n|om)(\\/styles\\/v[0-9]*\\/)(.*\\/sprite.*\\..*$)/i;\n },\n get API_FONTS_REGEX() {\n // https://docs.mapbox.com/api/maps/fonts/#retrieve-font-glyph-ranges\n return /^((https?:)?\\/\\/)?([^\\/]+\\.)?mapbox\\.c(n|om)(\\/fonts\\/v[0-9]*\\/)(.*\\.pbf.*$)/i;\n },\n get API_STYLE_REGEX() {\n // https://docs.mapbox.com/api/maps/styles/#retrieve-a-style\n return /^((https?:)?\\/\\/)?([^\\/]+\\.)?mapbox\\.c(n|om)(\\/styles\\/v[0-9]*\\/)(.*$)/i;\n },\n get API_CDN_URL_REGEX() {\n return /^((https?:)?\\/\\/)?api\\.mapbox\\.c(n|om)(\\/mapbox-gl-js\\/)(.*$)/i;\n },\n get EVENTS_URL() {\n if (!config.API_URL) { return null; }\n try {\n const url = new URL(config.API_URL);\n if (url.hostname === 'api.mapbox.cn') {\n return 'https://events.mapbox.cn/events/v2';\n } else if (url.hostname === 'api.mapbox.com') {\n return 'https://events.mapbox.com/events/v2';\n } else {\n return null;\n }\n } catch (e) {\n return null;\n }\n },\n SESSION_PATH: '/map-sessions/v1',\n FEEDBACK_URL: 'https://apps.mapbox.com/feedback',\n TILE_URL_VERSION: 'v4',\n RASTER_URL_PREFIX: 'raster/v1',\n RASTERARRAYS_URL_PREFIX: 'rasterarrays/v1',\n REQUIRE_ACCESS_TOKEN: true,\n ACCESS_TOKEN: null,\n DEFAULT_STYLE: 'mapbox://styles/mapbox/standard',\n MAX_PARALLEL_IMAGE_REQUESTS: 16,\n DRACO_URL: 'https://api.mapbox.com/mapbox-gl-js/draco_decoder_gltf_v1.5.6.wasm',\n MESHOPT_URL: 'https://api.mapbox.com/mapbox-gl-js/meshopt_base_v0.20.wasm',\n MESHOPT_SIMD_URL: 'https://api.mapbox.com/mapbox-gl-js/meshopt_simd_v0.20.wasm',\n GLYPHS_URL: 'mapbox://fonts/mapbox/{fontstack}/{range}.pbf'\n};\n\nexport default config;\n", "// @flow\nimport config from './config.js';\n\nexport function isMapboxHTTPURL(url: string): boolean {\n return config.API_URL_REGEX.test(url);\n}\n\nexport function isMapboxURL(url: string): boolean {\n return url.indexOf('mapbox:') === 0;\n}\n\nexport function isMapboxHTTPCDNURL(url: string): boolean {\n return config.API_CDN_URL_REGEX.test(url);\n}\n\nexport function isMapboxHTTPSpriteURL(url: string): boolean {\n return config.API_SPRITE_REGEX.test(url);\n}\n\nexport function isMapboxHTTPStyleURL(url: string): boolean {\n return config.API_STYLE_REGEX.test(url) && !isMapboxHTTPSpriteURL(url);\n}\n\nexport function isMapboxHTTPTileJSONURL(url: string): boolean {\n return config.API_TILEJSON_REGEX.test(url);\n}\n\nexport function isMapboxHTTPFontsURL(url: string): boolean {\n return config.API_FONTS_REGEX.test(url);\n}\n\nexport function hasCacheDefeatingSku(url: string): boolean {\n return url.indexOf('sku=') > 0 && isMapboxHTTPURL(url);\n}\n", "// @flow\n\nimport {version as sdkVersion} from '../../package.json';\nimport {\n isMapboxHTTPFontsURL,\n isMapboxHTTPTileJSONURL,\n isMapboxHTTPSpriteURL,\n isMapboxHTTPStyleURL,\n isMapboxHTTPCDNURL\n} from './mapbox_url.js';\n\ntype LivePerformanceMetrics = {\n counters: Array,\n metadata: Array,\n attributes: Array\n};\n\nexport type LivePerformanceData = {\n interactionRange: [number, number],\n visibilityHidden: number,\n width: number,\n height: number,\n terrainEnabled: boolean,\n fogEnabled: boolean,\n projection: string,\n zoom: number,\n renderer: ?string,\n vendor: ?string\n};\n\nexport const PerformanceMarkers = {\n create: 'create',\n load: 'load',\n fullLoad: 'fullLoad'\n};\n\nexport const LivePerformanceUtils = {\n mark(marker: $Keys) {\n performance.mark(marker);\n },\n measure(name: string, begin?: string, end?: string) {\n performance.measure(name, begin, end);\n }\n};\n\nfunction categorize(arr: Array, fn: (entry: PerformanceResourceTiming) => string): {[string]: Array} {\n const obj = {};\n if (arr) {\n for (const item of arr) {\n const category = fn(item);\n if (obj[category] === undefined) {\n obj[category] = [];\n }\n obj[category].push(item);\n }\n }\n return obj;\n}\n\nfunction getCountersPerResourceType(resourceTimers: { [string]: Array }) {\n const obj = {};\n if (resourceTimers) {\n for (const category in resourceTimers) {\n if (category !== 'other') {\n for (const timer of resourceTimers[category]) {\n const min = `${category}ResolveRangeMin`;\n const max = `${category}ResolveRangeMax`;\n const reqCount = `${category}RequestCount`;\n const reqCachedCount = `${category}RequestCachedCount`;\n\n // Resource -TransferStart and -TransferEnd represent the wall time\n // between the start of a request to when the data is available\n obj[min] = Math.min(obj[min] || +Infinity, timer.startTime);\n obj[max] = Math.max(obj[max] || -Infinity, timer.responseEnd);\n\n const increment = (key: string) => {\n if (obj[key] === undefined) {\n obj[key] = 0;\n }\n ++obj[key];\n };\n\n const transferSizeSupported = timer.transferSize !== undefined;\n if (transferSizeSupported) {\n const resourceFetchedFromCache = (timer.transferSize === 0);\n if (resourceFetchedFromCache) {\n increment(reqCachedCount);\n }\n }\n increment(reqCount);\n }\n }\n }\n }\n return obj;\n}\n\nfunction getResourceCategory(entry: PerformanceResourceTiming): string {\n const url = entry.name.split('?')[0];\n\n if (isMapboxHTTPCDNURL(url) && url.includes('mapbox-gl.js')) return 'javascript';\n if (isMapboxHTTPCDNURL(url) && url.includes('mapbox-gl.css')) return 'css';\n if (isMapboxHTTPFontsURL(url)) return 'fontRange';\n if (isMapboxHTTPSpriteURL(url)) return 'sprite';\n if (isMapboxHTTPStyleURL(url)) return 'style';\n if (isMapboxHTTPTileJSONURL(url)) return 'tilejson';\n\n return 'other';\n}\n\nfunction getStyle(resourceTimers: Array): ?string {\n if (resourceTimers) {\n for (const timer of resourceTimers) {\n const url = timer.name.split('?')[0];\n if (isMapboxHTTPStyleURL(url)) {\n const split = url.split('/').slice(-2);\n if (split.length === 2) {\n return `mapbox://styles/${split[0]}/${split[1]}`;\n }\n }\n }\n }\n}\n\nexport function getLivePerformanceMetrics(data: LivePerformanceData): LivePerformanceMetrics {\n const resourceTimers = ((performance.getEntriesByType('resource'): any): Array);\n const markerTimers = performance.getEntriesByType('mark');\n const resourcesByType = categorize(resourceTimers, getResourceCategory);\n const counters = getCountersPerResourceType(resourcesByType);\n const devicePixelRatio = window.devicePixelRatio;\n // $FlowFixMe[prop-missing] no connection types in Flow\n const connection = navigator.connection || navigator.mozConnection || navigator.webkitConnection;\n const effectiveType = connection ? (connection: any).effectiveType : undefined;\n const metrics: LivePerformanceMetrics = {counters: [], metadata: [], attributes: []};\n\n // Please read carefully before adding or modifying the following metrics:\n // https://github.com/mapbox/gl-js-team/blob/main/docs/live_performance_metrics.md\n const addMetric = (arr: Array<{| name: string, value: string |}>, name: string, value: ?(number | string)) => {\n if (value !== undefined && value !== null) {\n arr.push({name, value: value.toString()});\n }\n };\n\n for (const counter in counters) {\n addMetric(metrics.counters, counter, counters[counter]);\n }\n if (data.interactionRange[0] !== +Infinity && data.interactionRange[1] !== -Infinity) {\n addMetric(metrics.counters, \"interactionRangeMin\", data.interactionRange[0]);\n addMetric(metrics.counters, \"interactionRangeMax\", data.interactionRange[1]);\n }\n if (markerTimers) {\n for (const marker of Object.keys(PerformanceMarkers)) {\n const markerName = PerformanceMarkers[marker];\n const markerTimer = markerTimers.find((entry) => entry.name === markerName);\n if (markerTimer) {\n addMetric(metrics.counters, markerName, markerTimer.startTime);\n }\n }\n }\n addMetric(metrics.counters, \"visibilityHidden\", data.visibilityHidden);\n\n addMetric(metrics.attributes, \"style\", getStyle(resourceTimers));\n addMetric(metrics.attributes, \"terrainEnabled\", data.terrainEnabled ? \"true\" : \"false\");\n addMetric(metrics.attributes, \"fogEnabled\", data.fogEnabled ? \"true\" : \"false\");\n addMetric(metrics.attributes, \"projection\", data.projection);\n addMetric(metrics.attributes, \"zoom\", data.zoom);\n\n addMetric(metrics.metadata, \"devicePixelRatio\", devicePixelRatio);\n addMetric(metrics.metadata, \"connectionEffectiveType\", effectiveType);\n addMetric(metrics.metadata, \"navigatorUserAgent\", navigator.userAgent);\n addMetric(metrics.metadata, \"screenWidth\", window.screen.width);\n addMetric(metrics.metadata, \"screenHeight\", window.screen.height);\n addMetric(metrics.metadata, \"windowWidth\", window.innerWidth);\n addMetric(metrics.metadata, \"windowHeight\", window.innerHeight);\n addMetric(metrics.metadata, \"mapWidth\", data.width / devicePixelRatio);\n addMetric(metrics.metadata, \"mapHeight\", data.height / devicePixelRatio);\n addMetric(metrics.metadata, \"webglRenderer\", data.renderer);\n addMetric(metrics.metadata, \"webglVendor\", data.vendor);\n addMetric(metrics.metadata, \"sdkVersion\", sdkVersion);\n addMetric(metrics.metadata, \"sdkIdentifier\", \"mapbox-gl-js\");\n\n return metrics;\n}\n", "\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.setMatrixArrayType = setMatrixArrayType;\nexports.toRadian = toRadian;\nexports.equals = equals;\nexports.RANDOM = exports.ARRAY_TYPE = exports.EPSILON = void 0;\n\n/**\n * Common utilities\n * @module glMatrix\n */\n// Configuration Constants\nvar EPSILON = 0.000001;\nexports.EPSILON = EPSILON;\nvar ARRAY_TYPE = typeof Float32Array !== 'undefined' ? Float32Array : Array;\nexports.ARRAY_TYPE = ARRAY_TYPE;\nvar RANDOM = Math.random;\n/**\n * Sets the type of array used when creating new vectors and matrices\n *\n * @param {Float32ArrayConstructor | ArrayConstructor} type Array type, such as Float32Array or Array\n */\n\nexports.RANDOM = RANDOM;\n\nfunction setMatrixArrayType(type) {\n exports.ARRAY_TYPE = ARRAY_TYPE = type;\n}\n\nvar degree = Math.PI / 180;\n/**\n * Convert Degree To Radian\n *\n * @param {Number} a Angle in Degrees\n */\n\nfunction toRadian(a) {\n return a * degree;\n}\n/**\n * Tests whether or not the arguments have approximately the same value, within an absolute\n * or relative tolerance of glMatrix.EPSILON (an absolute tolerance is used for values less\n * than or equal to 1.0, and a relative tolerance is used for larger values)\n *\n * @param {Number} a The first number to test.\n * @param {Number} b The second number to test.\n * @returns {Boolean} True if the numbers are approximately equal, false otherwise.\n */\n\n\nfunction equals(a, b) {\n return Math.abs(a - b) <= EPSILON * Math.max(1.0, Math.abs(a), Math.abs(b));\n}\n\nif (!Math.hypot) Math.hypot = function () {\n var y = 0,\n i = arguments.length;\n\n while (i--) {\n y += arguments[i] * arguments[i];\n }\n\n return Math.sqrt(y);\n};", "\"use strict\";\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.create = create;\nexports.clone = clone;\nexports.copy = copy;\nexports.identity = identity;\nexports.fromValues = fromValues;\nexports.set = set;\nexports.transpose = transpose;\nexports.invert = invert;\nexports.adjoint = adjoint;\nexports.determinant = determinant;\nexports.multiply = multiply;\nexports.rotate = rotate;\nexports.scale = scale;\nexports.fromRotation = fromRotation;\nexports.fromScaling = fromScaling;\nexports.str = str;\nexports.frob = frob;\nexports.LDU = LDU;\nexports.add = add;\nexports.subtract = subtract;\nexports.exactEquals = exactEquals;\nexports.equals = equals;\nexports.multiplyScalar = multiplyScalar;\nexports.multiplyScalarAndAdd = multiplyScalarAndAdd;\nexports.sub = exports.mul = void 0;\n\nvar glMatrix = _interopRequireWildcard(require(\"./common.js\"));\n\nfunction _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== \"function\") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }\n\nfunction _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== \"object\" && typeof obj !== \"function\") { return { \"default\": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== \"default\" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj[\"default\"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }\n\n/**\n * 2x2 Matrix\n * @module mat2\n */\n\n/**\n * Creates a new identity mat2\n *\n * @returns {mat2} a new 2x2 matrix\n */\nfunction create() {\n var out = new glMatrix.ARRAY_TYPE(4);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[1] = 0;\n out[2] = 0;\n }\n\n out[0] = 1;\n out[3] = 1;\n return out;\n}\n/**\n * Creates a new mat2 initialized with values from an existing matrix\n *\n * @param {ReadonlyMat2} a matrix to clone\n * @returns {mat2} a new 2x2 matrix\n */\n\n\nfunction clone(a) {\n var out = new glMatrix.ARRAY_TYPE(4);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n return out;\n}\n/**\n * Copy the values from one mat2 to another\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the source matrix\n * @returns {mat2} out\n */\n\n\nfunction copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n return out;\n}\n/**\n * Set a mat2 to the identity matrix\n *\n * @param {mat2} out the receiving matrix\n * @returns {mat2} out\n */\n\n\nfunction identity(out) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 1;\n return out;\n}\n/**\n * Create a new mat2 with the given values\n *\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\n * @param {Number} m10 Component in column 1, row 0 position (index 2)\n * @param {Number} m11 Component in column 1, row 1 position (index 3)\n * @returns {mat2} out A new 2x2 matrix\n */\n\n\nfunction fromValues(m00, m01, m10, m11) {\n var out = new glMatrix.ARRAY_TYPE(4);\n out[0] = m00;\n out[1] = m01;\n out[2] = m10;\n out[3] = m11;\n return out;\n}\n/**\n * Set the components of a mat2 to the given values\n *\n * @param {mat2} out the receiving matrix\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\n * @param {Number} m10 Component in column 1, row 0 position (index 2)\n * @param {Number} m11 Component in column 1, row 1 position (index 3)\n * @returns {mat2} out\n */\n\n\nfunction set(out, m00, m01, m10, m11) {\n out[0] = m00;\n out[1] = m01;\n out[2] = m10;\n out[3] = m11;\n return out;\n}\n/**\n * Transpose the values of a mat2\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the source matrix\n * @returns {mat2} out\n */\n\n\nfunction transpose(out, a) {\n // If we are transposing ourselves we can skip a few steps but have to cache\n // some values\n if (out === a) {\n var a1 = a[1];\n out[1] = a[2];\n out[2] = a1;\n } else {\n out[0] = a[0];\n out[1] = a[2];\n out[2] = a[1];\n out[3] = a[3];\n }\n\n return out;\n}\n/**\n * Inverts a mat2\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the source matrix\n * @returns {mat2} out\n */\n\n\nfunction invert(out, a) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3]; // Calculate the determinant\n\n var det = a0 * a3 - a2 * a1;\n\n if (!det) {\n return null;\n }\n\n det = 1.0 / det;\n out[0] = a3 * det;\n out[1] = -a1 * det;\n out[2] = -a2 * det;\n out[3] = a0 * det;\n return out;\n}\n/**\n * Calculates the adjugate of a mat2\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the source matrix\n * @returns {mat2} out\n */\n\n\nfunction adjoint(out, a) {\n // Caching this value is nessecary if out == a\n var a0 = a[0];\n out[0] = a[3];\n out[1] = -a[1];\n out[2] = -a[2];\n out[3] = a0;\n return out;\n}\n/**\n * Calculates the determinant of a mat2\n *\n * @param {ReadonlyMat2} a the source matrix\n * @returns {Number} determinant of a\n */\n\n\nfunction determinant(a) {\n return a[0] * a[3] - a[2] * a[1];\n}\n/**\n * Multiplies two mat2's\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the first operand\n * @param {ReadonlyMat2} b the second operand\n * @returns {mat2} out\n */\n\n\nfunction multiply(out, a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n out[0] = a0 * b0 + a2 * b1;\n out[1] = a1 * b0 + a3 * b1;\n out[2] = a0 * b2 + a2 * b3;\n out[3] = a1 * b2 + a3 * b3;\n return out;\n}\n/**\n * Rotates a mat2 by the given angle\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the matrix to rotate\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat2} out\n */\n\n\nfunction rotate(out, a, rad) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n out[0] = a0 * c + a2 * s;\n out[1] = a1 * c + a3 * s;\n out[2] = a0 * -s + a2 * c;\n out[3] = a1 * -s + a3 * c;\n return out;\n}\n/**\n * Scales the mat2 by the dimensions in the given vec2\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the matrix to rotate\n * @param {ReadonlyVec2} v the vec2 to scale the matrix by\n * @returns {mat2} out\n **/\n\n\nfunction scale(out, a, v) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var v0 = v[0],\n v1 = v[1];\n out[0] = a0 * v0;\n out[1] = a1 * v0;\n out[2] = a2 * v1;\n out[3] = a3 * v1;\n return out;\n}\n/**\n * Creates a matrix from a given angle\n * This is equivalent to (but much faster than):\n *\n * mat2.identity(dest);\n * mat2.rotate(dest, dest, rad);\n *\n * @param {mat2} out mat2 receiving operation result\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat2} out\n */\n\n\nfunction fromRotation(out, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n out[0] = c;\n out[1] = s;\n out[2] = -s;\n out[3] = c;\n return out;\n}\n/**\n * Creates a matrix from a vector scaling\n * This is equivalent to (but much faster than):\n *\n * mat2.identity(dest);\n * mat2.scale(dest, dest, vec);\n *\n * @param {mat2} out mat2 receiving operation result\n * @param {ReadonlyVec2} v Scaling vector\n * @returns {mat2} out\n */\n\n\nfunction fromScaling(out, v) {\n out[0] = v[0];\n out[1] = 0;\n out[2] = 0;\n out[3] = v[1];\n return out;\n}\n/**\n * Returns a string representation of a mat2\n *\n * @param {ReadonlyMat2} a matrix to represent as a string\n * @returns {String} string representation of the matrix\n */\n\n\nfunction str(a) {\n return \"mat2(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \")\";\n}\n/**\n * Returns Frobenius norm of a mat2\n *\n * @param {ReadonlyMat2} a the matrix to calculate Frobenius norm of\n * @returns {Number} Frobenius norm\n */\n\n\nfunction frob(a) {\n return Math.hypot(a[0], a[1], a[2], a[3]);\n}\n/**\n * Returns L, D and U matrices (Lower triangular, Diagonal and Upper triangular) by factorizing the input matrix\n * @param {ReadonlyMat2} L the lower triangular matrix\n * @param {ReadonlyMat2} D the diagonal matrix\n * @param {ReadonlyMat2} U the upper triangular matrix\n * @param {ReadonlyMat2} a the input matrix to factorize\n */\n\n\nfunction LDU(L, D, U, a) {\n L[2] = a[2] / a[0];\n U[0] = a[0];\n U[1] = a[1];\n U[3] = a[3] - L[2] * U[1];\n return [L, D, U];\n}\n/**\n * Adds two mat2's\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the first operand\n * @param {ReadonlyMat2} b the second operand\n * @returns {mat2} out\n */\n\n\nfunction add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n return out;\n}\n/**\n * Subtracts matrix b from matrix a\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the first operand\n * @param {ReadonlyMat2} b the second operand\n * @returns {mat2} out\n */\n\n\nfunction subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n out[3] = a[3] - b[3];\n return out;\n}\n/**\n * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyMat2} a The first matrix.\n * @param {ReadonlyMat2} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\n\nfunction exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];\n}\n/**\n * Returns whether or not the matrices have approximately the same elements in the same position.\n *\n * @param {ReadonlyMat2} a The first matrix.\n * @param {ReadonlyMat2} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\n\nfunction equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3));\n}\n/**\n * Multiply each element of the matrix by a scalar.\n *\n * @param {mat2} out the receiving matrix\n * @param {ReadonlyMat2} a the matrix to scale\n * @param {Number} b amount to scale the matrix's elements by\n * @returns {mat2} out\n */\n\n\nfunction multiplyScalar(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n return out;\n}\n/**\n * Adds two mat2's after multiplying each element of the second operand by a scalar value.\n *\n * @param {mat2} out the receiving vector\n * @param {ReadonlyMat2} a the first operand\n * @param {ReadonlyMat2} b the second operand\n * @param {Number} scale the amount to scale b's elements by before adding\n * @returns {mat2} out\n */\n\n\nfunction multiplyScalarAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n out[3] = a[3] + b[3] * scale;\n return out;\n}\n/**\n * Alias for {@link mat2.multiply}\n * @function\n */\n\n\nvar mul = multiply;\n/**\n * Alias for {@link mat2.subtract}\n * @function\n */\n\nexports.mul = mul;\nvar sub = subtract;\nexports.sub = sub;", "\"use strict\";\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.create = create;\nexports.clone = clone;\nexports.copy = copy;\nexports.identity = identity;\nexports.fromValues = fromValues;\nexports.set = set;\nexports.invert = invert;\nexports.determinant = determinant;\nexports.multiply = multiply;\nexports.rotate = rotate;\nexports.scale = scale;\nexports.translate = translate;\nexports.fromRotation = fromRotation;\nexports.fromScaling = fromScaling;\nexports.fromTranslation = fromTranslation;\nexports.str = str;\nexports.frob = frob;\nexports.add = add;\nexports.subtract = subtract;\nexports.multiplyScalar = multiplyScalar;\nexports.multiplyScalarAndAdd = multiplyScalarAndAdd;\nexports.exactEquals = exactEquals;\nexports.equals = equals;\nexports.sub = exports.mul = void 0;\n\nvar glMatrix = _interopRequireWildcard(require(\"./common.js\"));\n\nfunction _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== \"function\") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }\n\nfunction _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== \"object\" && typeof obj !== \"function\") { return { \"default\": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== \"default\" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj[\"default\"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }\n\n/**\n * 2x3 Matrix\n * @module mat2d\n * @description\n * A mat2d contains six elements defined as:\n *
\n * [a, b,\n *  c, d,\n *  tx, ty]\n * 
\n * This is a short form for the 3x3 matrix:\n *
\n * [a, b, 0,\n *  c, d, 0,\n *  tx, ty, 1]\n * 
\n * The last column is ignored so the array is shorter and operations are faster.\n */\n\n/**\n * Creates a new identity mat2d\n *\n * @returns {mat2d} a new 2x3 matrix\n */\nfunction create() {\n var out = new glMatrix.ARRAY_TYPE(6);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[1] = 0;\n out[2] = 0;\n out[4] = 0;\n out[5] = 0;\n }\n\n out[0] = 1;\n out[3] = 1;\n return out;\n}\n/**\n * Creates a new mat2d initialized with values from an existing matrix\n *\n * @param {ReadonlyMat2d} a matrix to clone\n * @returns {mat2d} a new 2x3 matrix\n */\n\n\nfunction clone(a) {\n var out = new glMatrix.ARRAY_TYPE(6);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n return out;\n}\n/**\n * Copy the values from one mat2d to another\n *\n * @param {mat2d} out the receiving matrix\n * @param {ReadonlyMat2d} a the source matrix\n * @returns {mat2d} out\n */\n\n\nfunction copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n return out;\n}\n/**\n * Set a mat2d to the identity matrix\n *\n * @param {mat2d} out the receiving matrix\n * @returns {mat2d} out\n */\n\n\nfunction identity(out) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 1;\n out[4] = 0;\n out[5] = 0;\n return out;\n}\n/**\n * Create a new mat2d with the given values\n *\n * @param {Number} a Component A (index 0)\n * @param {Number} b Component B (index 1)\n * @param {Number} c Component C (index 2)\n * @param {Number} d Component D (index 3)\n * @param {Number} tx Component TX (index 4)\n * @param {Number} ty Component TY (index 5)\n * @returns {mat2d} A new mat2d\n */\n\n\nfunction fromValues(a, b, c, d, tx, ty) {\n var out = new glMatrix.ARRAY_TYPE(6);\n out[0] = a;\n out[1] = b;\n out[2] = c;\n out[3] = d;\n out[4] = tx;\n out[5] = ty;\n return out;\n}\n/**\n * Set the components of a mat2d to the given values\n *\n * @param {mat2d} out the receiving matrix\n * @param {Number} a Component A (index 0)\n * @param {Number} b Component B (index 1)\n * @param {Number} c Component C (index 2)\n * @param {Number} d Component D (index 3)\n * @param {Number} tx Component TX (index 4)\n * @param {Number} ty Component TY (index 5)\n * @returns {mat2d} out\n */\n\n\nfunction set(out, a, b, c, d, tx, ty) {\n out[0] = a;\n out[1] = b;\n out[2] = c;\n out[3] = d;\n out[4] = tx;\n out[5] = ty;\n return out;\n}\n/**\n * Inverts a mat2d\n *\n * @param {mat2d} out the receiving matrix\n * @param {ReadonlyMat2d} a the source matrix\n * @returns {mat2d} out\n */\n\n\nfunction invert(out, a) {\n var aa = a[0],\n ab = a[1],\n ac = a[2],\n ad = a[3];\n var atx = a[4],\n aty = a[5];\n var det = aa * ad - ab * ac;\n\n if (!det) {\n return null;\n }\n\n det = 1.0 / det;\n out[0] = ad * det;\n out[1] = -ab * det;\n out[2] = -ac * det;\n out[3] = aa * det;\n out[4] = (ac * aty - ad * atx) * det;\n out[5] = (ab * atx - aa * aty) * det;\n return out;\n}\n/**\n * Calculates the determinant of a mat2d\n *\n * @param {ReadonlyMat2d} a the source matrix\n * @returns {Number} determinant of a\n */\n\n\nfunction determinant(a) {\n return a[0] * a[3] - a[1] * a[2];\n}\n/**\n * Multiplies two mat2d's\n *\n * @param {mat2d} out the receiving matrix\n * @param {ReadonlyMat2d} a the first operand\n * @param {ReadonlyMat2d} b the second operand\n * @returns {mat2d} out\n */\n\n\nfunction multiply(out, a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3],\n a4 = a[4],\n a5 = a[5];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3],\n b4 = b[4],\n b5 = b[5];\n out[0] = a0 * b0 + a2 * b1;\n out[1] = a1 * b0 + a3 * b1;\n out[2] = a0 * b2 + a2 * b3;\n out[3] = a1 * b2 + a3 * b3;\n out[4] = a0 * b4 + a2 * b5 + a4;\n out[5] = a1 * b4 + a3 * b5 + a5;\n return out;\n}\n/**\n * Rotates a mat2d by the given angle\n *\n * @param {mat2d} out the receiving matrix\n * @param {ReadonlyMat2d} a the matrix to rotate\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat2d} out\n */\n\n\nfunction rotate(out, a, rad) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3],\n a4 = a[4],\n a5 = a[5];\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n out[0] = a0 * c + a2 * s;\n out[1] = a1 * c + a3 * s;\n out[2] = a0 * -s + a2 * c;\n out[3] = a1 * -s + a3 * c;\n out[4] = a4;\n out[5] = a5;\n return out;\n}\n/**\n * Scales the mat2d by the dimensions in the given vec2\n *\n * @param {mat2d} out the receiving matrix\n * @param {ReadonlyMat2d} a the matrix to translate\n * @param {ReadonlyVec2} v the vec2 to scale the matrix by\n * @returns {mat2d} out\n **/\n\n\nfunction scale(out, a, v) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3],\n a4 = a[4],\n a5 = a[5];\n var v0 = v[0],\n v1 = v[1];\n out[0] = a0 * v0;\n out[1] = a1 * v0;\n out[2] = a2 * v1;\n out[3] = a3 * v1;\n out[4] = a4;\n out[5] = a5;\n return out;\n}\n/**\n * Translates the mat2d by the dimensions in the given vec2\n *\n * @param {mat2d} out the receiving matrix\n * @param {ReadonlyMat2d} a the matrix to translate\n * @param {ReadonlyVec2} v the vec2 to translate the matrix by\n * @returns {mat2d} out\n **/\n\n\nfunction translate(out, a, v) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3],\n a4 = a[4],\n a5 = a[5];\n var v0 = v[0],\n v1 = v[1];\n out[0] = a0;\n out[1] = a1;\n out[2] = a2;\n out[3] = a3;\n out[4] = a0 * v0 + a2 * v1 + a4;\n out[5] = a1 * v0 + a3 * v1 + a5;\n return out;\n}\n/**\n * Creates a matrix from a given angle\n * This is equivalent to (but much faster than):\n *\n * mat2d.identity(dest);\n * mat2d.rotate(dest, dest, rad);\n *\n * @param {mat2d} out mat2d receiving operation result\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat2d} out\n */\n\n\nfunction fromRotation(out, rad) {\n var s = Math.sin(rad),\n c = Math.cos(rad);\n out[0] = c;\n out[1] = s;\n out[2] = -s;\n out[3] = c;\n out[4] = 0;\n out[5] = 0;\n return out;\n}\n/**\n * Creates a matrix from a vector scaling\n * This is equivalent to (but much faster than):\n *\n * mat2d.identity(dest);\n * mat2d.scale(dest, dest, vec);\n *\n * @param {mat2d} out mat2d receiving operation result\n * @param {ReadonlyVec2} v Scaling vector\n * @returns {mat2d} out\n */\n\n\nfunction fromScaling(out, v) {\n out[0] = v[0];\n out[1] = 0;\n out[2] = 0;\n out[3] = v[1];\n out[4] = 0;\n out[5] = 0;\n return out;\n}\n/**\n * Creates a matrix from a vector translation\n * This is equivalent to (but much faster than):\n *\n * mat2d.identity(dest);\n * mat2d.translate(dest, dest, vec);\n *\n * @param {mat2d} out mat2d receiving operation result\n * @param {ReadonlyVec2} v Translation vector\n * @returns {mat2d} out\n */\n\n\nfunction fromTranslation(out, v) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 1;\n out[4] = v[0];\n out[5] = v[1];\n return out;\n}\n/**\n * Returns a string representation of a mat2d\n *\n * @param {ReadonlyMat2d} a matrix to represent as a string\n * @returns {String} string representation of the matrix\n */\n\n\nfunction str(a) {\n return \"mat2d(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \", \" + a[4] + \", \" + a[5] + \")\";\n}\n/**\n * Returns Frobenius norm of a mat2d\n *\n * @param {ReadonlyMat2d} a the matrix to calculate Frobenius norm of\n * @returns {Number} Frobenius norm\n */\n\n\nfunction frob(a) {\n return Math.hypot(a[0], a[1], a[2], a[3], a[4], a[5], 1);\n}\n/**\n * Adds two mat2d's\n *\n * @param {mat2d} out the receiving matrix\n * @param {ReadonlyMat2d} a the first operand\n * @param {ReadonlyMat2d} b the second operand\n * @returns {mat2d} out\n */\n\n\nfunction add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n out[4] = a[4] + b[4];\n out[5] = a[5] + b[5];\n return out;\n}\n/**\n * Subtracts matrix b from matrix a\n *\n * @param {mat2d} out the receiving matrix\n * @param {ReadonlyMat2d} a the first operand\n * @param {ReadonlyMat2d} b the second operand\n * @returns {mat2d} out\n */\n\n\nfunction subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n out[3] = a[3] - b[3];\n out[4] = a[4] - b[4];\n out[5] = a[5] - b[5];\n return out;\n}\n/**\n * Multiply each element of the matrix by a scalar.\n *\n * @param {mat2d} out the receiving matrix\n * @param {ReadonlyMat2d} a the matrix to scale\n * @param {Number} b amount to scale the matrix's elements by\n * @returns {mat2d} out\n */\n\n\nfunction multiplyScalar(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n out[4] = a[4] * b;\n out[5] = a[5] * b;\n return out;\n}\n/**\n * Adds two mat2d's after multiplying each element of the second operand by a scalar value.\n *\n * @param {mat2d} out the receiving vector\n * @param {ReadonlyMat2d} a the first operand\n * @param {ReadonlyMat2d} b the second operand\n * @param {Number} scale the amount to scale b's elements by before adding\n * @returns {mat2d} out\n */\n\n\nfunction multiplyScalarAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n out[3] = a[3] + b[3] * scale;\n out[4] = a[4] + b[4] * scale;\n out[5] = a[5] + b[5] * scale;\n return out;\n}\n/**\n * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyMat2d} a The first matrix.\n * @param {ReadonlyMat2d} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\n\nfunction exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5];\n}\n/**\n * Returns whether or not the matrices have approximately the same elements in the same position.\n *\n * @param {ReadonlyMat2d} a The first matrix.\n * @param {ReadonlyMat2d} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\n\nfunction equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3],\n a4 = a[4],\n a5 = a[5];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3],\n b4 = b[4],\n b5 = b[5];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3)) && Math.abs(a4 - b4) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a4), Math.abs(b4)) && Math.abs(a5 - b5) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a5), Math.abs(b5));\n}\n/**\n * Alias for {@link mat2d.multiply}\n * @function\n */\n\n\nvar mul = multiply;\n/**\n * Alias for {@link mat2d.subtract}\n * @function\n */\n\nexports.mul = mul;\nvar sub = subtract;\nexports.sub = sub;", "\"use strict\";\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.create = create;\nexports.fromMat4 = fromMat4;\nexports.clone = clone;\nexports.copy = copy;\nexports.fromValues = fromValues;\nexports.set = set;\nexports.identity = identity;\nexports.transpose = transpose;\nexports.invert = invert;\nexports.adjoint = adjoint;\nexports.determinant = determinant;\nexports.multiply = multiply;\nexports.translate = translate;\nexports.rotate = rotate;\nexports.scale = scale;\nexports.fromTranslation = fromTranslation;\nexports.fromRotation = fromRotation;\nexports.fromScaling = fromScaling;\nexports.fromMat2d = fromMat2d;\nexports.fromQuat = fromQuat;\nexports.normalFromMat4 = normalFromMat4;\nexports.projection = projection;\nexports.str = str;\nexports.frob = frob;\nexports.add = add;\nexports.subtract = subtract;\nexports.multiplyScalar = multiplyScalar;\nexports.multiplyScalarAndAdd = multiplyScalarAndAdd;\nexports.exactEquals = exactEquals;\nexports.equals = equals;\nexports.sub = exports.mul = void 0;\n\nvar glMatrix = _interopRequireWildcard(require(\"./common.js\"));\n\nfunction _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== \"function\") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }\n\nfunction _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== \"object\" && typeof obj !== \"function\") { return { \"default\": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== \"default\" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj[\"default\"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }\n\n/**\n * 3x3 Matrix\n * @module mat3\n */\n\n/**\n * Creates a new identity mat3\n *\n * @returns {mat3} a new 3x3 matrix\n */\nfunction create() {\n var out = new glMatrix.ARRAY_TYPE(9);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n }\n\n out[0] = 1;\n out[4] = 1;\n out[8] = 1;\n return out;\n}\n/**\n * Copies the upper-left 3x3 values into the given mat3.\n *\n * @param {mat3} out the receiving 3x3 matrix\n * @param {ReadonlyMat4} a the source 4x4 matrix\n * @returns {mat3} out\n */\n\n\nfunction fromMat4(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[4];\n out[4] = a[5];\n out[5] = a[6];\n out[6] = a[8];\n out[7] = a[9];\n out[8] = a[10];\n return out;\n}\n/**\n * Creates a new mat3 initialized with values from an existing matrix\n *\n * @param {ReadonlyMat3} a matrix to clone\n * @returns {mat3} a new 3x3 matrix\n */\n\n\nfunction clone(a) {\n var out = new glMatrix.ARRAY_TYPE(9);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n return out;\n}\n/**\n * Copy the values from one mat3 to another\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the source matrix\n * @returns {mat3} out\n */\n\n\nfunction copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n return out;\n}\n/**\n * Create a new mat3 with the given values\n *\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\n * @param {Number} m02 Component in column 0, row 2 position (index 2)\n * @param {Number} m10 Component in column 1, row 0 position (index 3)\n * @param {Number} m11 Component in column 1, row 1 position (index 4)\n * @param {Number} m12 Component in column 1, row 2 position (index 5)\n * @param {Number} m20 Component in column 2, row 0 position (index 6)\n * @param {Number} m21 Component in column 2, row 1 position (index 7)\n * @param {Number} m22 Component in column 2, row 2 position (index 8)\n * @returns {mat3} A new mat3\n */\n\n\nfunction fromValues(m00, m01, m02, m10, m11, m12, m20, m21, m22) {\n var out = new glMatrix.ARRAY_TYPE(9);\n out[0] = m00;\n out[1] = m01;\n out[2] = m02;\n out[3] = m10;\n out[4] = m11;\n out[5] = m12;\n out[6] = m20;\n out[7] = m21;\n out[8] = m22;\n return out;\n}\n/**\n * Set the components of a mat3 to the given values\n *\n * @param {mat3} out the receiving matrix\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\n * @param {Number} m02 Component in column 0, row 2 position (index 2)\n * @param {Number} m10 Component in column 1, row 0 position (index 3)\n * @param {Number} m11 Component in column 1, row 1 position (index 4)\n * @param {Number} m12 Component in column 1, row 2 position (index 5)\n * @param {Number} m20 Component in column 2, row 0 position (index 6)\n * @param {Number} m21 Component in column 2, row 1 position (index 7)\n * @param {Number} m22 Component in column 2, row 2 position (index 8)\n * @returns {mat3} out\n */\n\n\nfunction set(out, m00, m01, m02, m10, m11, m12, m20, m21, m22) {\n out[0] = m00;\n out[1] = m01;\n out[2] = m02;\n out[3] = m10;\n out[4] = m11;\n out[5] = m12;\n out[6] = m20;\n out[7] = m21;\n out[8] = m22;\n return out;\n}\n/**\n * Set a mat3 to the identity matrix\n *\n * @param {mat3} out the receiving matrix\n * @returns {mat3} out\n */\n\n\nfunction identity(out) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 1;\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n out[8] = 1;\n return out;\n}\n/**\n * Transpose the values of a mat3\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the source matrix\n * @returns {mat3} out\n */\n\n\nfunction transpose(out, a) {\n // If we are transposing ourselves we can skip a few steps but have to cache some values\n if (out === a) {\n var a01 = a[1],\n a02 = a[2],\n a12 = a[5];\n out[1] = a[3];\n out[2] = a[6];\n out[3] = a01;\n out[5] = a[7];\n out[6] = a02;\n out[7] = a12;\n } else {\n out[0] = a[0];\n out[1] = a[3];\n out[2] = a[6];\n out[3] = a[1];\n out[4] = a[4];\n out[5] = a[7];\n out[6] = a[2];\n out[7] = a[5];\n out[8] = a[8];\n }\n\n return out;\n}\n/**\n * Inverts a mat3\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the source matrix\n * @returns {mat3} out\n */\n\n\nfunction invert(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2];\n var a10 = a[3],\n a11 = a[4],\n a12 = a[5];\n var a20 = a[6],\n a21 = a[7],\n a22 = a[8];\n var b01 = a22 * a11 - a12 * a21;\n var b11 = -a22 * a10 + a12 * a20;\n var b21 = a21 * a10 - a11 * a20; // Calculate the determinant\n\n var det = a00 * b01 + a01 * b11 + a02 * b21;\n\n if (!det) {\n return null;\n }\n\n det = 1.0 / det;\n out[0] = b01 * det;\n out[1] = (-a22 * a01 + a02 * a21) * det;\n out[2] = (a12 * a01 - a02 * a11) * det;\n out[3] = b11 * det;\n out[4] = (a22 * a00 - a02 * a20) * det;\n out[5] = (-a12 * a00 + a02 * a10) * det;\n out[6] = b21 * det;\n out[7] = (-a21 * a00 + a01 * a20) * det;\n out[8] = (a11 * a00 - a01 * a10) * det;\n return out;\n}\n/**\n * Calculates the adjugate of a mat3\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the source matrix\n * @returns {mat3} out\n */\n\n\nfunction adjoint(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2];\n var a10 = a[3],\n a11 = a[4],\n a12 = a[5];\n var a20 = a[6],\n a21 = a[7],\n a22 = a[8];\n out[0] = a11 * a22 - a12 * a21;\n out[1] = a02 * a21 - a01 * a22;\n out[2] = a01 * a12 - a02 * a11;\n out[3] = a12 * a20 - a10 * a22;\n out[4] = a00 * a22 - a02 * a20;\n out[5] = a02 * a10 - a00 * a12;\n out[6] = a10 * a21 - a11 * a20;\n out[7] = a01 * a20 - a00 * a21;\n out[8] = a00 * a11 - a01 * a10;\n return out;\n}\n/**\n * Calculates the determinant of a mat3\n *\n * @param {ReadonlyMat3} a the source matrix\n * @returns {Number} determinant of a\n */\n\n\nfunction determinant(a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2];\n var a10 = a[3],\n a11 = a[4],\n a12 = a[5];\n var a20 = a[6],\n a21 = a[7],\n a22 = a[8];\n return a00 * (a22 * a11 - a12 * a21) + a01 * (-a22 * a10 + a12 * a20) + a02 * (a21 * a10 - a11 * a20);\n}\n/**\n * Multiplies two mat3's\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the first operand\n * @param {ReadonlyMat3} b the second operand\n * @returns {mat3} out\n */\n\n\nfunction multiply(out, a, b) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2];\n var a10 = a[3],\n a11 = a[4],\n a12 = a[5];\n var a20 = a[6],\n a21 = a[7],\n a22 = a[8];\n var b00 = b[0],\n b01 = b[1],\n b02 = b[2];\n var b10 = b[3],\n b11 = b[4],\n b12 = b[5];\n var b20 = b[6],\n b21 = b[7],\n b22 = b[8];\n out[0] = b00 * a00 + b01 * a10 + b02 * a20;\n out[1] = b00 * a01 + b01 * a11 + b02 * a21;\n out[2] = b00 * a02 + b01 * a12 + b02 * a22;\n out[3] = b10 * a00 + b11 * a10 + b12 * a20;\n out[4] = b10 * a01 + b11 * a11 + b12 * a21;\n out[5] = b10 * a02 + b11 * a12 + b12 * a22;\n out[6] = b20 * a00 + b21 * a10 + b22 * a20;\n out[7] = b20 * a01 + b21 * a11 + b22 * a21;\n out[8] = b20 * a02 + b21 * a12 + b22 * a22;\n return out;\n}\n/**\n * Translate a mat3 by the given vector\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the matrix to translate\n * @param {ReadonlyVec2} v vector to translate by\n * @returns {mat3} out\n */\n\n\nfunction translate(out, a, v) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a10 = a[3],\n a11 = a[4],\n a12 = a[5],\n a20 = a[6],\n a21 = a[7],\n a22 = a[8],\n x = v[0],\n y = v[1];\n out[0] = a00;\n out[1] = a01;\n out[2] = a02;\n out[3] = a10;\n out[4] = a11;\n out[5] = a12;\n out[6] = x * a00 + y * a10 + a20;\n out[7] = x * a01 + y * a11 + a21;\n out[8] = x * a02 + y * a12 + a22;\n return out;\n}\n/**\n * Rotates a mat3 by the given angle\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the matrix to rotate\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat3} out\n */\n\n\nfunction rotate(out, a, rad) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a10 = a[3],\n a11 = a[4],\n a12 = a[5],\n a20 = a[6],\n a21 = a[7],\n a22 = a[8],\n s = Math.sin(rad),\n c = Math.cos(rad);\n out[0] = c * a00 + s * a10;\n out[1] = c * a01 + s * a11;\n out[2] = c * a02 + s * a12;\n out[3] = c * a10 - s * a00;\n out[4] = c * a11 - s * a01;\n out[5] = c * a12 - s * a02;\n out[6] = a20;\n out[7] = a21;\n out[8] = a22;\n return out;\n}\n/**\n * Scales the mat3 by the dimensions in the given vec2\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the matrix to rotate\n * @param {ReadonlyVec2} v the vec2 to scale the matrix by\n * @returns {mat3} out\n **/\n\n\nfunction scale(out, a, v) {\n var x = v[0],\n y = v[1];\n out[0] = x * a[0];\n out[1] = x * a[1];\n out[2] = x * a[2];\n out[3] = y * a[3];\n out[4] = y * a[4];\n out[5] = y * a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n return out;\n}\n/**\n * Creates a matrix from a vector translation\n * This is equivalent to (but much faster than):\n *\n * mat3.identity(dest);\n * mat3.translate(dest, dest, vec);\n *\n * @param {mat3} out mat3 receiving operation result\n * @param {ReadonlyVec2} v Translation vector\n * @returns {mat3} out\n */\n\n\nfunction fromTranslation(out, v) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 1;\n out[5] = 0;\n out[6] = v[0];\n out[7] = v[1];\n out[8] = 1;\n return out;\n}\n/**\n * Creates a matrix from a given angle\n * This is equivalent to (but much faster than):\n *\n * mat3.identity(dest);\n * mat3.rotate(dest, dest, rad);\n *\n * @param {mat3} out mat3 receiving operation result\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat3} out\n */\n\n\nfunction fromRotation(out, rad) {\n var s = Math.sin(rad),\n c = Math.cos(rad);\n out[0] = c;\n out[1] = s;\n out[2] = 0;\n out[3] = -s;\n out[4] = c;\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n out[8] = 1;\n return out;\n}\n/**\n * Creates a matrix from a vector scaling\n * This is equivalent to (but much faster than):\n *\n * mat3.identity(dest);\n * mat3.scale(dest, dest, vec);\n *\n * @param {mat3} out mat3 receiving operation result\n * @param {ReadonlyVec2} v Scaling vector\n * @returns {mat3} out\n */\n\n\nfunction fromScaling(out, v) {\n out[0] = v[0];\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = v[1];\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n out[8] = 1;\n return out;\n}\n/**\n * Copies the values from a mat2d into a mat3\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat2d} a the matrix to copy\n * @returns {mat3} out\n **/\n\n\nfunction fromMat2d(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = 0;\n out[3] = a[2];\n out[4] = a[3];\n out[5] = 0;\n out[6] = a[4];\n out[7] = a[5];\n out[8] = 1;\n return out;\n}\n/**\n * Calculates a 3x3 matrix from the given quaternion\n *\n * @param {mat3} out mat3 receiving operation result\n * @param {ReadonlyQuat} q Quaternion to create matrix from\n *\n * @returns {mat3} out\n */\n\n\nfunction fromQuat(out, q) {\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var yx = y * x2;\n var yy = y * y2;\n var zx = z * x2;\n var zy = z * y2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n out[0] = 1 - yy - zz;\n out[3] = yx - wz;\n out[6] = zx + wy;\n out[1] = yx + wz;\n out[4] = 1 - xx - zz;\n out[7] = zy - wx;\n out[2] = zx - wy;\n out[5] = zy + wx;\n out[8] = 1 - xx - yy;\n return out;\n}\n/**\n * Calculates a 3x3 normal matrix (transpose inverse) from the 4x4 matrix\n *\n * @param {mat3} out mat3 receiving operation result\n * @param {ReadonlyMat4} a Mat4 to derive the normal matrix from\n *\n * @returns {mat3} out\n */\n\n\nfunction normalFromMat4(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15];\n var b00 = a00 * a11 - a01 * a10;\n var b01 = a00 * a12 - a02 * a10;\n var b02 = a00 * a13 - a03 * a10;\n var b03 = a01 * a12 - a02 * a11;\n var b04 = a01 * a13 - a03 * a11;\n var b05 = a02 * a13 - a03 * a12;\n var b06 = a20 * a31 - a21 * a30;\n var b07 = a20 * a32 - a22 * a30;\n var b08 = a20 * a33 - a23 * a30;\n var b09 = a21 * a32 - a22 * a31;\n var b10 = a21 * a33 - a23 * a31;\n var b11 = a22 * a33 - a23 * a32; // Calculate the determinant\n\n var det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n if (!det) {\n return null;\n }\n\n det = 1.0 / det;\n out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;\n out[1] = (a12 * b08 - a10 * b11 - a13 * b07) * det;\n out[2] = (a10 * b10 - a11 * b08 + a13 * b06) * det;\n out[3] = (a02 * b10 - a01 * b11 - a03 * b09) * det;\n out[4] = (a00 * b11 - a02 * b08 + a03 * b07) * det;\n out[5] = (a01 * b08 - a00 * b10 - a03 * b06) * det;\n out[6] = (a31 * b05 - a32 * b04 + a33 * b03) * det;\n out[7] = (a32 * b02 - a30 * b05 - a33 * b01) * det;\n out[8] = (a30 * b04 - a31 * b02 + a33 * b00) * det;\n return out;\n}\n/**\n * Generates a 2D projection matrix with the given bounds\n *\n * @param {mat3} out mat3 frustum matrix will be written into\n * @param {number} width Width of your gl context\n * @param {number} height Height of gl context\n * @returns {mat3} out\n */\n\n\nfunction projection(out, width, height) {\n out[0] = 2 / width;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = -2 / height;\n out[5] = 0;\n out[6] = -1;\n out[7] = 1;\n out[8] = 1;\n return out;\n}\n/**\n * Returns a string representation of a mat3\n *\n * @param {ReadonlyMat3} a matrix to represent as a string\n * @returns {String} string representation of the matrix\n */\n\n\nfunction str(a) {\n return \"mat3(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \", \" + a[4] + \", \" + a[5] + \", \" + a[6] + \", \" + a[7] + \", \" + a[8] + \")\";\n}\n/**\n * Returns Frobenius norm of a mat3\n *\n * @param {ReadonlyMat3} a the matrix to calculate Frobenius norm of\n * @returns {Number} Frobenius norm\n */\n\n\nfunction frob(a) {\n return Math.hypot(a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8]);\n}\n/**\n * Adds two mat3's\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the first operand\n * @param {ReadonlyMat3} b the second operand\n * @returns {mat3} out\n */\n\n\nfunction add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n out[4] = a[4] + b[4];\n out[5] = a[5] + b[5];\n out[6] = a[6] + b[6];\n out[7] = a[7] + b[7];\n out[8] = a[8] + b[8];\n return out;\n}\n/**\n * Subtracts matrix b from matrix a\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the first operand\n * @param {ReadonlyMat3} b the second operand\n * @returns {mat3} out\n */\n\n\nfunction subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n out[3] = a[3] - b[3];\n out[4] = a[4] - b[4];\n out[5] = a[5] - b[5];\n out[6] = a[6] - b[6];\n out[7] = a[7] - b[7];\n out[8] = a[8] - b[8];\n return out;\n}\n/**\n * Multiply each element of the matrix by a scalar.\n *\n * @param {mat3} out the receiving matrix\n * @param {ReadonlyMat3} a the matrix to scale\n * @param {Number} b amount to scale the matrix's elements by\n * @returns {mat3} out\n */\n\n\nfunction multiplyScalar(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n out[4] = a[4] * b;\n out[5] = a[5] * b;\n out[6] = a[6] * b;\n out[7] = a[7] * b;\n out[8] = a[8] * b;\n return out;\n}\n/**\n * Adds two mat3's after multiplying each element of the second operand by a scalar value.\n *\n * @param {mat3} out the receiving vector\n * @param {ReadonlyMat3} a the first operand\n * @param {ReadonlyMat3} b the second operand\n * @param {Number} scale the amount to scale b's elements by before adding\n * @returns {mat3} out\n */\n\n\nfunction multiplyScalarAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n out[3] = a[3] + b[3] * scale;\n out[4] = a[4] + b[4] * scale;\n out[5] = a[5] + b[5] * scale;\n out[6] = a[6] + b[6] * scale;\n out[7] = a[7] + b[7] * scale;\n out[8] = a[8] + b[8] * scale;\n return out;\n}\n/**\n * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyMat3} a The first matrix.\n * @param {ReadonlyMat3} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\n\nfunction exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7] && a[8] === b[8];\n}\n/**\n * Returns whether or not the matrices have approximately the same elements in the same position.\n *\n * @param {ReadonlyMat3} a The first matrix.\n * @param {ReadonlyMat3} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\n\nfunction equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3],\n a4 = a[4],\n a5 = a[5],\n a6 = a[6],\n a7 = a[7],\n a8 = a[8];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3],\n b4 = b[4],\n b5 = b[5],\n b6 = b[6],\n b7 = b[7],\n b8 = b[8];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3)) && Math.abs(a4 - b4) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a4), Math.abs(b4)) && Math.abs(a5 - b5) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a5), Math.abs(b5)) && Math.abs(a6 - b6) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a6), Math.abs(b6)) && Math.abs(a7 - b7) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a7), Math.abs(b7)) && Math.abs(a8 - b8) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a8), Math.abs(b8));\n}\n/**\n * Alias for {@link mat3.multiply}\n * @function\n */\n\n\nvar mul = multiply;\n/**\n * Alias for {@link mat3.subtract}\n * @function\n */\n\nexports.mul = mul;\nvar sub = subtract;\nexports.sub = sub;", "\"use strict\";\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.create = create;\nexports.clone = clone;\nexports.copy = copy;\nexports.fromValues = fromValues;\nexports.set = set;\nexports.identity = identity;\nexports.transpose = transpose;\nexports.invert = invert;\nexports.adjoint = adjoint;\nexports.determinant = determinant;\nexports.multiply = multiply;\nexports.translate = translate;\nexports.scale = scale;\nexports.rotate = rotate;\nexports.rotateX = rotateX;\nexports.rotateY = rotateY;\nexports.rotateZ = rotateZ;\nexports.fromTranslation = fromTranslation;\nexports.fromScaling = fromScaling;\nexports.fromRotation = fromRotation;\nexports.fromXRotation = fromXRotation;\nexports.fromYRotation = fromYRotation;\nexports.fromZRotation = fromZRotation;\nexports.fromRotationTranslation = fromRotationTranslation;\nexports.fromQuat2 = fromQuat2;\nexports.getTranslation = getTranslation;\nexports.getScaling = getScaling;\nexports.getRotation = getRotation;\nexports.fromRotationTranslationScale = fromRotationTranslationScale;\nexports.fromRotationTranslationScaleOrigin = fromRotationTranslationScaleOrigin;\nexports.fromQuat = fromQuat;\nexports.frustum = frustum;\nexports.perspectiveNO = perspectiveNO;\nexports.perspectiveZO = perspectiveZO;\nexports.perspectiveFromFieldOfView = perspectiveFromFieldOfView;\nexports.orthoNO = orthoNO;\nexports.orthoZO = orthoZO;\nexports.lookAt = lookAt;\nexports.targetTo = targetTo;\nexports.str = str;\nexports.frob = frob;\nexports.add = add;\nexports.subtract = subtract;\nexports.multiplyScalar = multiplyScalar;\nexports.multiplyScalarAndAdd = multiplyScalarAndAdd;\nexports.exactEquals = exactEquals;\nexports.equals = equals;\nexports.sub = exports.mul = exports.ortho = exports.perspective = void 0;\n\nvar glMatrix = _interopRequireWildcard(require(\"./common.js\"));\n\nfunction _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== \"function\") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }\n\nfunction _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== \"object\" && typeof obj !== \"function\") { return { \"default\": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== \"default\" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj[\"default\"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }\n\n/**\n * 4x4 Matrix
Format: column-major, when typed out it looks like row-major
The matrices are being post multiplied.\n * @module mat4\n */\n\n/**\n * Creates a new identity mat4\n *\n * @returns {mat4} a new 4x4 matrix\n */\nfunction create() {\n var out = new glMatrix.ARRAY_TYPE(16);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n }\n\n out[0] = 1;\n out[5] = 1;\n out[10] = 1;\n out[15] = 1;\n return out;\n}\n/**\n * Creates a new mat4 initialized with values from an existing matrix\n *\n * @param {ReadonlyMat4} a matrix to clone\n * @returns {mat4} a new 4x4 matrix\n */\n\n\nfunction clone(a) {\n var out = new glMatrix.ARRAY_TYPE(16);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n out[9] = a[9];\n out[10] = a[10];\n out[11] = a[11];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n return out;\n}\n/**\n * Copy the values from one mat4 to another\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the source matrix\n * @returns {mat4} out\n */\n\n\nfunction copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[8] = a[8];\n out[9] = a[9];\n out[10] = a[10];\n out[11] = a[11];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n return out;\n}\n/**\n * Create a new mat4 with the given values\n *\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\n * @param {Number} m02 Component in column 0, row 2 position (index 2)\n * @param {Number} m03 Component in column 0, row 3 position (index 3)\n * @param {Number} m10 Component in column 1, row 0 position (index 4)\n * @param {Number} m11 Component in column 1, row 1 position (index 5)\n * @param {Number} m12 Component in column 1, row 2 position (index 6)\n * @param {Number} m13 Component in column 1, row 3 position (index 7)\n * @param {Number} m20 Component in column 2, row 0 position (index 8)\n * @param {Number} m21 Component in column 2, row 1 position (index 9)\n * @param {Number} m22 Component in column 2, row 2 position (index 10)\n * @param {Number} m23 Component in column 2, row 3 position (index 11)\n * @param {Number} m30 Component in column 3, row 0 position (index 12)\n * @param {Number} m31 Component in column 3, row 1 position (index 13)\n * @param {Number} m32 Component in column 3, row 2 position (index 14)\n * @param {Number} m33 Component in column 3, row 3 position (index 15)\n * @returns {mat4} A new mat4\n */\n\n\nfunction fromValues(m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {\n var out = new glMatrix.ARRAY_TYPE(16);\n out[0] = m00;\n out[1] = m01;\n out[2] = m02;\n out[3] = m03;\n out[4] = m10;\n out[5] = m11;\n out[6] = m12;\n out[7] = m13;\n out[8] = m20;\n out[9] = m21;\n out[10] = m22;\n out[11] = m23;\n out[12] = m30;\n out[13] = m31;\n out[14] = m32;\n out[15] = m33;\n return out;\n}\n/**\n * Set the components of a mat4 to the given values\n *\n * @param {mat4} out the receiving matrix\n * @param {Number} m00 Component in column 0, row 0 position (index 0)\n * @param {Number} m01 Component in column 0, row 1 position (index 1)\n * @param {Number} m02 Component in column 0, row 2 position (index 2)\n * @param {Number} m03 Component in column 0, row 3 position (index 3)\n * @param {Number} m10 Component in column 1, row 0 position (index 4)\n * @param {Number} m11 Component in column 1, row 1 position (index 5)\n * @param {Number} m12 Component in column 1, row 2 position (index 6)\n * @param {Number} m13 Component in column 1, row 3 position (index 7)\n * @param {Number} m20 Component in column 2, row 0 position (index 8)\n * @param {Number} m21 Component in column 2, row 1 position (index 9)\n * @param {Number} m22 Component in column 2, row 2 position (index 10)\n * @param {Number} m23 Component in column 2, row 3 position (index 11)\n * @param {Number} m30 Component in column 3, row 0 position (index 12)\n * @param {Number} m31 Component in column 3, row 1 position (index 13)\n * @param {Number} m32 Component in column 3, row 2 position (index 14)\n * @param {Number} m33 Component in column 3, row 3 position (index 15)\n * @returns {mat4} out\n */\n\n\nfunction set(out, m00, m01, m02, m03, m10, m11, m12, m13, m20, m21, m22, m23, m30, m31, m32, m33) {\n out[0] = m00;\n out[1] = m01;\n out[2] = m02;\n out[3] = m03;\n out[4] = m10;\n out[5] = m11;\n out[6] = m12;\n out[7] = m13;\n out[8] = m20;\n out[9] = m21;\n out[10] = m22;\n out[11] = m23;\n out[12] = m30;\n out[13] = m31;\n out[14] = m32;\n out[15] = m33;\n return out;\n}\n/**\n * Set a mat4 to the identity matrix\n *\n * @param {mat4} out the receiving matrix\n * @returns {mat4} out\n */\n\n\nfunction identity(out) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = 1;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = 1;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Transpose the values of a mat4\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the source matrix\n * @returns {mat4} out\n */\n\n\nfunction transpose(out, a) {\n // If we are transposing ourselves we can skip a few steps but have to cache some values\n if (out === a) {\n var a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a12 = a[6],\n a13 = a[7];\n var a23 = a[11];\n out[1] = a[4];\n out[2] = a[8];\n out[3] = a[12];\n out[4] = a01;\n out[6] = a[9];\n out[7] = a[13];\n out[8] = a02;\n out[9] = a12;\n out[11] = a[14];\n out[12] = a03;\n out[13] = a13;\n out[14] = a23;\n } else {\n out[0] = a[0];\n out[1] = a[4];\n out[2] = a[8];\n out[3] = a[12];\n out[4] = a[1];\n out[5] = a[5];\n out[6] = a[9];\n out[7] = a[13];\n out[8] = a[2];\n out[9] = a[6];\n out[10] = a[10];\n out[11] = a[14];\n out[12] = a[3];\n out[13] = a[7];\n out[14] = a[11];\n out[15] = a[15];\n }\n\n return out;\n}\n/**\n * Inverts a mat4\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the source matrix\n * @returns {mat4} out\n */\n\n\nfunction invert(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15];\n var b00 = a00 * a11 - a01 * a10;\n var b01 = a00 * a12 - a02 * a10;\n var b02 = a00 * a13 - a03 * a10;\n var b03 = a01 * a12 - a02 * a11;\n var b04 = a01 * a13 - a03 * a11;\n var b05 = a02 * a13 - a03 * a12;\n var b06 = a20 * a31 - a21 * a30;\n var b07 = a20 * a32 - a22 * a30;\n var b08 = a20 * a33 - a23 * a30;\n var b09 = a21 * a32 - a22 * a31;\n var b10 = a21 * a33 - a23 * a31;\n var b11 = a22 * a33 - a23 * a32; // Calculate the determinant\n\n var det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n\n if (!det) {\n return null;\n }\n\n det = 1.0 / det;\n out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;\n out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;\n out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;\n out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;\n out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;\n out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;\n out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;\n out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;\n out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;\n out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;\n out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;\n out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;\n out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;\n out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;\n out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;\n out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;\n return out;\n}\n/**\n * Calculates the adjugate of a mat4\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the source matrix\n * @returns {mat4} out\n */\n\n\nfunction adjoint(out, a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15];\n out[0] = a11 * (a22 * a33 - a23 * a32) - a21 * (a12 * a33 - a13 * a32) + a31 * (a12 * a23 - a13 * a22);\n out[1] = -(a01 * (a22 * a33 - a23 * a32) - a21 * (a02 * a33 - a03 * a32) + a31 * (a02 * a23 - a03 * a22));\n out[2] = a01 * (a12 * a33 - a13 * a32) - a11 * (a02 * a33 - a03 * a32) + a31 * (a02 * a13 - a03 * a12);\n out[3] = -(a01 * (a12 * a23 - a13 * a22) - a11 * (a02 * a23 - a03 * a22) + a21 * (a02 * a13 - a03 * a12));\n out[4] = -(a10 * (a22 * a33 - a23 * a32) - a20 * (a12 * a33 - a13 * a32) + a30 * (a12 * a23 - a13 * a22));\n out[5] = a00 * (a22 * a33 - a23 * a32) - a20 * (a02 * a33 - a03 * a32) + a30 * (a02 * a23 - a03 * a22);\n out[6] = -(a00 * (a12 * a33 - a13 * a32) - a10 * (a02 * a33 - a03 * a32) + a30 * (a02 * a13 - a03 * a12));\n out[7] = a00 * (a12 * a23 - a13 * a22) - a10 * (a02 * a23 - a03 * a22) + a20 * (a02 * a13 - a03 * a12);\n out[8] = a10 * (a21 * a33 - a23 * a31) - a20 * (a11 * a33 - a13 * a31) + a30 * (a11 * a23 - a13 * a21);\n out[9] = -(a00 * (a21 * a33 - a23 * a31) - a20 * (a01 * a33 - a03 * a31) + a30 * (a01 * a23 - a03 * a21));\n out[10] = a00 * (a11 * a33 - a13 * a31) - a10 * (a01 * a33 - a03 * a31) + a30 * (a01 * a13 - a03 * a11);\n out[11] = -(a00 * (a11 * a23 - a13 * a21) - a10 * (a01 * a23 - a03 * a21) + a20 * (a01 * a13 - a03 * a11));\n out[12] = -(a10 * (a21 * a32 - a22 * a31) - a20 * (a11 * a32 - a12 * a31) + a30 * (a11 * a22 - a12 * a21));\n out[13] = a00 * (a21 * a32 - a22 * a31) - a20 * (a01 * a32 - a02 * a31) + a30 * (a01 * a22 - a02 * a21);\n out[14] = -(a00 * (a11 * a32 - a12 * a31) - a10 * (a01 * a32 - a02 * a31) + a30 * (a01 * a12 - a02 * a11));\n out[15] = a00 * (a11 * a22 - a12 * a21) - a10 * (a01 * a22 - a02 * a21) + a20 * (a01 * a12 - a02 * a11);\n return out;\n}\n/**\n * Calculates the determinant of a mat4\n *\n * @param {ReadonlyMat4} a the source matrix\n * @returns {Number} determinant of a\n */\n\n\nfunction determinant(a) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15];\n var b00 = a00 * a11 - a01 * a10;\n var b01 = a00 * a12 - a02 * a10;\n var b02 = a00 * a13 - a03 * a10;\n var b03 = a01 * a12 - a02 * a11;\n var b04 = a01 * a13 - a03 * a11;\n var b05 = a02 * a13 - a03 * a12;\n var b06 = a20 * a31 - a21 * a30;\n var b07 = a20 * a32 - a22 * a30;\n var b08 = a20 * a33 - a23 * a30;\n var b09 = a21 * a32 - a22 * a31;\n var b10 = a21 * a33 - a23 * a31;\n var b11 = a22 * a33 - a23 * a32; // Calculate the determinant\n\n return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;\n}\n/**\n * Multiplies two mat4s\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the first operand\n * @param {ReadonlyMat4} b the second operand\n * @returns {mat4} out\n */\n\n\nfunction multiply(out, a, b) {\n var a00 = a[0],\n a01 = a[1],\n a02 = a[2],\n a03 = a[3];\n var a10 = a[4],\n a11 = a[5],\n a12 = a[6],\n a13 = a[7];\n var a20 = a[8],\n a21 = a[9],\n a22 = a[10],\n a23 = a[11];\n var a30 = a[12],\n a31 = a[13],\n a32 = a[14],\n a33 = a[15]; // Cache only the current line of the second matrix\n\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n out[0] = b0 * a00 + b1 * a10 + b2 * a20 + b3 * a30;\n out[1] = b0 * a01 + b1 * a11 + b2 * a21 + b3 * a31;\n out[2] = b0 * a02 + b1 * a12 + b2 * a22 + b3 * a32;\n out[3] = b0 * a03 + b1 * a13 + b2 * a23 + b3 * a33;\n b0 = b[4];\n b1 = b[5];\n b2 = b[6];\n b3 = b[7];\n out[4] = b0 * a00 + b1 * a10 + b2 * a20 + b3 * a30;\n out[5] = b0 * a01 + b1 * a11 + b2 * a21 + b3 * a31;\n out[6] = b0 * a02 + b1 * a12 + b2 * a22 + b3 * a32;\n out[7] = b0 * a03 + b1 * a13 + b2 * a23 + b3 * a33;\n b0 = b[8];\n b1 = b[9];\n b2 = b[10];\n b3 = b[11];\n out[8] = b0 * a00 + b1 * a10 + b2 * a20 + b3 * a30;\n out[9] = b0 * a01 + b1 * a11 + b2 * a21 + b3 * a31;\n out[10] = b0 * a02 + b1 * a12 + b2 * a22 + b3 * a32;\n out[11] = b0 * a03 + b1 * a13 + b2 * a23 + b3 * a33;\n b0 = b[12];\n b1 = b[13];\n b2 = b[14];\n b3 = b[15];\n out[12] = b0 * a00 + b1 * a10 + b2 * a20 + b3 * a30;\n out[13] = b0 * a01 + b1 * a11 + b2 * a21 + b3 * a31;\n out[14] = b0 * a02 + b1 * a12 + b2 * a22 + b3 * a32;\n out[15] = b0 * a03 + b1 * a13 + b2 * a23 + b3 * a33;\n return out;\n}\n/**\n * Translate a mat4 by the given vector\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to translate\n * @param {ReadonlyVec3} v vector to translate by\n * @returns {mat4} out\n */\n\n\nfunction translate(out, a, v) {\n var x = v[0],\n y = v[1],\n z = v[2];\n var a00, a01, a02, a03;\n var a10, a11, a12, a13;\n var a20, a21, a22, a23;\n\n if (a === out) {\n out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];\n out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];\n out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];\n out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];\n } else {\n a00 = a[0];\n a01 = a[1];\n a02 = a[2];\n a03 = a[3];\n a10 = a[4];\n a11 = a[5];\n a12 = a[6];\n a13 = a[7];\n a20 = a[8];\n a21 = a[9];\n a22 = a[10];\n a23 = a[11];\n out[0] = a00;\n out[1] = a01;\n out[2] = a02;\n out[3] = a03;\n out[4] = a10;\n out[5] = a11;\n out[6] = a12;\n out[7] = a13;\n out[8] = a20;\n out[9] = a21;\n out[10] = a22;\n out[11] = a23;\n out[12] = a00 * x + a10 * y + a20 * z + a[12];\n out[13] = a01 * x + a11 * y + a21 * z + a[13];\n out[14] = a02 * x + a12 * y + a22 * z + a[14];\n out[15] = a03 * x + a13 * y + a23 * z + a[15];\n }\n\n return out;\n}\n/**\n * Scales the mat4 by the dimensions in the given vec3 not using vectorization\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to scale\n * @param {ReadonlyVec3} v the vec3 to scale the matrix by\n * @returns {mat4} out\n **/\n\n\nfunction scale(out, a, v) {\n var x = v[0],\n y = v[1],\n z = v[2];\n out[0] = a[0] * x;\n out[1] = a[1] * x;\n out[2] = a[2] * x;\n out[3] = a[3] * x;\n out[4] = a[4] * y;\n out[5] = a[5] * y;\n out[6] = a[6] * y;\n out[7] = a[7] * y;\n out[8] = a[8] * z;\n out[9] = a[9] * z;\n out[10] = a[10] * z;\n out[11] = a[11] * z;\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n return out;\n}\n/**\n * Rotates a mat4 by the given angle around the given axis\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to rotate\n * @param {Number} rad the angle to rotate the matrix by\n * @param {ReadonlyVec3} axis the axis to rotate around\n * @returns {mat4} out\n */\n\n\nfunction rotate(out, a, rad, axis) {\n var x = axis[0],\n y = axis[1],\n z = axis[2];\n var len = Math.hypot(x, y, z);\n var s, c, t;\n var a00, a01, a02, a03;\n var a10, a11, a12, a13;\n var a20, a21, a22, a23;\n var b00, b01, b02;\n var b10, b11, b12;\n var b20, b21, b22;\n\n if (len < glMatrix.EPSILON) {\n return null;\n }\n\n len = 1 / len;\n x *= len;\n y *= len;\n z *= len;\n s = Math.sin(rad);\n c = Math.cos(rad);\n t = 1 - c;\n a00 = a[0];\n a01 = a[1];\n a02 = a[2];\n a03 = a[3];\n a10 = a[4];\n a11 = a[5];\n a12 = a[6];\n a13 = a[7];\n a20 = a[8];\n a21 = a[9];\n a22 = a[10];\n a23 = a[11]; // Construct the elements of the rotation matrix\n\n b00 = x * x * t + c;\n b01 = y * x * t + z * s;\n b02 = z * x * t - y * s;\n b10 = x * y * t - z * s;\n b11 = y * y * t + c;\n b12 = z * y * t + x * s;\n b20 = x * z * t + y * s;\n b21 = y * z * t - x * s;\n b22 = z * z * t + c; // Perform rotation-specific matrix multiplication\n\n out[0] = a00 * b00 + a10 * b01 + a20 * b02;\n out[1] = a01 * b00 + a11 * b01 + a21 * b02;\n out[2] = a02 * b00 + a12 * b01 + a22 * b02;\n out[3] = a03 * b00 + a13 * b01 + a23 * b02;\n out[4] = a00 * b10 + a10 * b11 + a20 * b12;\n out[5] = a01 * b10 + a11 * b11 + a21 * b12;\n out[6] = a02 * b10 + a12 * b11 + a22 * b12;\n out[7] = a03 * b10 + a13 * b11 + a23 * b12;\n out[8] = a00 * b20 + a10 * b21 + a20 * b22;\n out[9] = a01 * b20 + a11 * b21 + a21 * b22;\n out[10] = a02 * b20 + a12 * b21 + a22 * b22;\n out[11] = a03 * b20 + a13 * b21 + a23 * b22;\n\n if (a !== out) {\n // If the source and destination differ, copy the unchanged last row\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n }\n\n return out;\n}\n/**\n * Rotates a matrix by the given angle around the X axis\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to rotate\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat4} out\n */\n\n\nfunction rotateX(out, a, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n var a10 = a[4];\n var a11 = a[5];\n var a12 = a[6];\n var a13 = a[7];\n var a20 = a[8];\n var a21 = a[9];\n var a22 = a[10];\n var a23 = a[11];\n\n if (a !== out) {\n // If the source and destination differ, copy the unchanged rows\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n } // Perform axis-specific matrix multiplication\n\n\n out[4] = a10 * c + a20 * s;\n out[5] = a11 * c + a21 * s;\n out[6] = a12 * c + a22 * s;\n out[7] = a13 * c + a23 * s;\n out[8] = a20 * c - a10 * s;\n out[9] = a21 * c - a11 * s;\n out[10] = a22 * c - a12 * s;\n out[11] = a23 * c - a13 * s;\n return out;\n}\n/**\n * Rotates a matrix by the given angle around the Y axis\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to rotate\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat4} out\n */\n\n\nfunction rotateY(out, a, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n var a00 = a[0];\n var a01 = a[1];\n var a02 = a[2];\n var a03 = a[3];\n var a20 = a[8];\n var a21 = a[9];\n var a22 = a[10];\n var a23 = a[11];\n\n if (a !== out) {\n // If the source and destination differ, copy the unchanged rows\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n } // Perform axis-specific matrix multiplication\n\n\n out[0] = a00 * c - a20 * s;\n out[1] = a01 * c - a21 * s;\n out[2] = a02 * c - a22 * s;\n out[3] = a03 * c - a23 * s;\n out[8] = a00 * s + a20 * c;\n out[9] = a01 * s + a21 * c;\n out[10] = a02 * s + a22 * c;\n out[11] = a03 * s + a23 * c;\n return out;\n}\n/**\n * Rotates a matrix by the given angle around the Z axis\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to rotate\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat4} out\n */\n\n\nfunction rotateZ(out, a, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad);\n var a00 = a[0];\n var a01 = a[1];\n var a02 = a[2];\n var a03 = a[3];\n var a10 = a[4];\n var a11 = a[5];\n var a12 = a[6];\n var a13 = a[7];\n\n if (a !== out) {\n // If the source and destination differ, copy the unchanged last row\n out[8] = a[8];\n out[9] = a[9];\n out[10] = a[10];\n out[11] = a[11];\n out[12] = a[12];\n out[13] = a[13];\n out[14] = a[14];\n out[15] = a[15];\n } // Perform axis-specific matrix multiplication\n\n\n out[0] = a00 * c + a10 * s;\n out[1] = a01 * c + a11 * s;\n out[2] = a02 * c + a12 * s;\n out[3] = a03 * c + a13 * s;\n out[4] = a10 * c - a00 * s;\n out[5] = a11 * c - a01 * s;\n out[6] = a12 * c - a02 * s;\n out[7] = a13 * c - a03 * s;\n return out;\n}\n/**\n * Creates a matrix from a vector translation\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.translate(dest, dest, vec);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {ReadonlyVec3} v Translation vector\n * @returns {mat4} out\n */\n\n\nfunction fromTranslation(out, v) {\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = 1;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = 1;\n out[11] = 0;\n out[12] = v[0];\n out[13] = v[1];\n out[14] = v[2];\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from a vector scaling\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.scale(dest, dest, vec);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {ReadonlyVec3} v Scaling vector\n * @returns {mat4} out\n */\n\n\nfunction fromScaling(out, v) {\n out[0] = v[0];\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = v[1];\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = v[2];\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from a given angle around a given axis\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.rotate(dest, dest, rad, axis);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {Number} rad the angle to rotate the matrix by\n * @param {ReadonlyVec3} axis the axis to rotate around\n * @returns {mat4} out\n */\n\n\nfunction fromRotation(out, rad, axis) {\n var x = axis[0],\n y = axis[1],\n z = axis[2];\n var len = Math.hypot(x, y, z);\n var s, c, t;\n\n if (len < glMatrix.EPSILON) {\n return null;\n }\n\n len = 1 / len;\n x *= len;\n y *= len;\n z *= len;\n s = Math.sin(rad);\n c = Math.cos(rad);\n t = 1 - c; // Perform rotation-specific matrix multiplication\n\n out[0] = x * x * t + c;\n out[1] = y * x * t + z * s;\n out[2] = z * x * t - y * s;\n out[3] = 0;\n out[4] = x * y * t - z * s;\n out[5] = y * y * t + c;\n out[6] = z * y * t + x * s;\n out[7] = 0;\n out[8] = x * z * t + y * s;\n out[9] = y * z * t - x * s;\n out[10] = z * z * t + c;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from the given angle around the X axis\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.rotateX(dest, dest, rad);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat4} out\n */\n\n\nfunction fromXRotation(out, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad); // Perform axis-specific matrix multiplication\n\n out[0] = 1;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = c;\n out[6] = s;\n out[7] = 0;\n out[8] = 0;\n out[9] = -s;\n out[10] = c;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from the given angle around the Y axis\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.rotateY(dest, dest, rad);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat4} out\n */\n\n\nfunction fromYRotation(out, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad); // Perform axis-specific matrix multiplication\n\n out[0] = c;\n out[1] = 0;\n out[2] = -s;\n out[3] = 0;\n out[4] = 0;\n out[5] = 1;\n out[6] = 0;\n out[7] = 0;\n out[8] = s;\n out[9] = 0;\n out[10] = c;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from the given angle around the Z axis\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.rotateZ(dest, dest, rad);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {Number} rad the angle to rotate the matrix by\n * @returns {mat4} out\n */\n\n\nfunction fromZRotation(out, rad) {\n var s = Math.sin(rad);\n var c = Math.cos(rad); // Perform axis-specific matrix multiplication\n\n out[0] = c;\n out[1] = s;\n out[2] = 0;\n out[3] = 0;\n out[4] = -s;\n out[5] = c;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = 1;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from a quaternion rotation and vector translation\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.translate(dest, vec);\n * let quatMat = mat4.create();\n * quat4.toMat4(quat, quatMat);\n * mat4.multiply(dest, quatMat);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {quat4} q Rotation quaternion\n * @param {ReadonlyVec3} v Translation vector\n * @returns {mat4} out\n */\n\n\nfunction fromRotationTranslation(out, q, v) {\n // Quaternion math\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var xy = x * y2;\n var xz = x * z2;\n var yy = y * y2;\n var yz = y * z2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n out[0] = 1 - (yy + zz);\n out[1] = xy + wz;\n out[2] = xz - wy;\n out[3] = 0;\n out[4] = xy - wz;\n out[5] = 1 - (xx + zz);\n out[6] = yz + wx;\n out[7] = 0;\n out[8] = xz + wy;\n out[9] = yz - wx;\n out[10] = 1 - (xx + yy);\n out[11] = 0;\n out[12] = v[0];\n out[13] = v[1];\n out[14] = v[2];\n out[15] = 1;\n return out;\n}\n/**\n * Creates a new mat4 from a dual quat.\n *\n * @param {mat4} out Matrix\n * @param {ReadonlyQuat2} a Dual Quaternion\n * @returns {mat4} mat4 receiving operation result\n */\n\n\nfunction fromQuat2(out, a) {\n var translation = new glMatrix.ARRAY_TYPE(3);\n var bx = -a[0],\n by = -a[1],\n bz = -a[2],\n bw = a[3],\n ax = a[4],\n ay = a[5],\n az = a[6],\n aw = a[7];\n var magnitude = bx * bx + by * by + bz * bz + bw * bw; //Only scale if it makes sense\n\n if (magnitude > 0) {\n translation[0] = (ax * bw + aw * bx + ay * bz - az * by) * 2 / magnitude;\n translation[1] = (ay * bw + aw * by + az * bx - ax * bz) * 2 / magnitude;\n translation[2] = (az * bw + aw * bz + ax * by - ay * bx) * 2 / magnitude;\n } else {\n translation[0] = (ax * bw + aw * bx + ay * bz - az * by) * 2;\n translation[1] = (ay * bw + aw * by + az * bx - ax * bz) * 2;\n translation[2] = (az * bw + aw * bz + ax * by - ay * bx) * 2;\n }\n\n fromRotationTranslation(out, a, translation);\n return out;\n}\n/**\n * Returns the translation vector component of a transformation\n * matrix. If a matrix is built with fromRotationTranslation,\n * the returned vector will be the same as the translation vector\n * originally supplied.\n * @param {vec3} out Vector to receive translation component\n * @param {ReadonlyMat4} mat Matrix to be decomposed (input)\n * @return {vec3} out\n */\n\n\nfunction getTranslation(out, mat) {\n out[0] = mat[12];\n out[1] = mat[13];\n out[2] = mat[14];\n return out;\n}\n/**\n * Returns the scaling factor component of a transformation\n * matrix. If a matrix is built with fromRotationTranslationScale\n * with a normalized Quaternion paramter, the returned vector will be\n * the same as the scaling vector\n * originally supplied.\n * @param {vec3} out Vector to receive scaling factor component\n * @param {ReadonlyMat4} mat Matrix to be decomposed (input)\n * @return {vec3} out\n */\n\n\nfunction getScaling(out, mat) {\n var m11 = mat[0];\n var m12 = mat[1];\n var m13 = mat[2];\n var m21 = mat[4];\n var m22 = mat[5];\n var m23 = mat[6];\n var m31 = mat[8];\n var m32 = mat[9];\n var m33 = mat[10];\n out[0] = Math.hypot(m11, m12, m13);\n out[1] = Math.hypot(m21, m22, m23);\n out[2] = Math.hypot(m31, m32, m33);\n return out;\n}\n/**\n * Returns a quaternion representing the rotational component\n * of a transformation matrix. If a matrix is built with\n * fromRotationTranslation, the returned quaternion will be the\n * same as the quaternion originally supplied.\n * @param {quat} out Quaternion to receive the rotation component\n * @param {ReadonlyMat4} mat Matrix to be decomposed (input)\n * @return {quat} out\n */\n\n\nfunction getRotation(out, mat) {\n var scaling = new glMatrix.ARRAY_TYPE(3);\n getScaling(scaling, mat);\n var is1 = 1 / scaling[0];\n var is2 = 1 / scaling[1];\n var is3 = 1 / scaling[2];\n var sm11 = mat[0] * is1;\n var sm12 = mat[1] * is2;\n var sm13 = mat[2] * is3;\n var sm21 = mat[4] * is1;\n var sm22 = mat[5] * is2;\n var sm23 = mat[6] * is3;\n var sm31 = mat[8] * is1;\n var sm32 = mat[9] * is2;\n var sm33 = mat[10] * is3;\n var trace = sm11 + sm22 + sm33;\n var S = 0;\n\n if (trace > 0) {\n S = Math.sqrt(trace + 1.0) * 2;\n out[3] = 0.25 * S;\n out[0] = (sm23 - sm32) / S;\n out[1] = (sm31 - sm13) / S;\n out[2] = (sm12 - sm21) / S;\n } else if (sm11 > sm22 && sm11 > sm33) {\n S = Math.sqrt(1.0 + sm11 - sm22 - sm33) * 2;\n out[3] = (sm23 - sm32) / S;\n out[0] = 0.25 * S;\n out[1] = (sm12 + sm21) / S;\n out[2] = (sm31 + sm13) / S;\n } else if (sm22 > sm33) {\n S = Math.sqrt(1.0 + sm22 - sm11 - sm33) * 2;\n out[3] = (sm31 - sm13) / S;\n out[0] = (sm12 + sm21) / S;\n out[1] = 0.25 * S;\n out[2] = (sm23 + sm32) / S;\n } else {\n S = Math.sqrt(1.0 + sm33 - sm11 - sm22) * 2;\n out[3] = (sm12 - sm21) / S;\n out[0] = (sm31 + sm13) / S;\n out[1] = (sm23 + sm32) / S;\n out[2] = 0.25 * S;\n }\n\n return out;\n}\n/**\n * Creates a matrix from a quaternion rotation, vector translation and vector scale\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.translate(dest, vec);\n * let quatMat = mat4.create();\n * quat4.toMat4(quat, quatMat);\n * mat4.multiply(dest, quatMat);\n * mat4.scale(dest, scale)\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {quat4} q Rotation quaternion\n * @param {ReadonlyVec3} v Translation vector\n * @param {ReadonlyVec3} s Scaling vector\n * @returns {mat4} out\n */\n\n\nfunction fromRotationTranslationScale(out, q, v, s) {\n // Quaternion math\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var xy = x * y2;\n var xz = x * z2;\n var yy = y * y2;\n var yz = y * z2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n var sx = s[0];\n var sy = s[1];\n var sz = s[2];\n out[0] = (1 - (yy + zz)) * sx;\n out[1] = (xy + wz) * sx;\n out[2] = (xz - wy) * sx;\n out[3] = 0;\n out[4] = (xy - wz) * sy;\n out[5] = (1 - (xx + zz)) * sy;\n out[6] = (yz + wx) * sy;\n out[7] = 0;\n out[8] = (xz + wy) * sz;\n out[9] = (yz - wx) * sz;\n out[10] = (1 - (xx + yy)) * sz;\n out[11] = 0;\n out[12] = v[0];\n out[13] = v[1];\n out[14] = v[2];\n out[15] = 1;\n return out;\n}\n/**\n * Creates a matrix from a quaternion rotation, vector translation and vector scale, rotating and scaling around the given origin\n * This is equivalent to (but much faster than):\n *\n * mat4.identity(dest);\n * mat4.translate(dest, vec);\n * mat4.translate(dest, origin);\n * let quatMat = mat4.create();\n * quat4.toMat4(quat, quatMat);\n * mat4.multiply(dest, quatMat);\n * mat4.scale(dest, scale)\n * mat4.translate(dest, negativeOrigin);\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {quat4} q Rotation quaternion\n * @param {ReadonlyVec3} v Translation vector\n * @param {ReadonlyVec3} s Scaling vector\n * @param {ReadonlyVec3} o The origin vector around which to scale and rotate\n * @returns {mat4} out\n */\n\n\nfunction fromRotationTranslationScaleOrigin(out, q, v, s, o) {\n // Quaternion math\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var xy = x * y2;\n var xz = x * z2;\n var yy = y * y2;\n var yz = y * z2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n var sx = s[0];\n var sy = s[1];\n var sz = s[2];\n var ox = o[0];\n var oy = o[1];\n var oz = o[2];\n var out0 = (1 - (yy + zz)) * sx;\n var out1 = (xy + wz) * sx;\n var out2 = (xz - wy) * sx;\n var out4 = (xy - wz) * sy;\n var out5 = (1 - (xx + zz)) * sy;\n var out6 = (yz + wx) * sy;\n var out8 = (xz + wy) * sz;\n var out9 = (yz - wx) * sz;\n var out10 = (1 - (xx + yy)) * sz;\n out[0] = out0;\n out[1] = out1;\n out[2] = out2;\n out[3] = 0;\n out[4] = out4;\n out[5] = out5;\n out[6] = out6;\n out[7] = 0;\n out[8] = out8;\n out[9] = out9;\n out[10] = out10;\n out[11] = 0;\n out[12] = v[0] + ox - (out0 * ox + out4 * oy + out8 * oz);\n out[13] = v[1] + oy - (out1 * ox + out5 * oy + out9 * oz);\n out[14] = v[2] + oz - (out2 * ox + out6 * oy + out10 * oz);\n out[15] = 1;\n return out;\n}\n/**\n * Calculates a 4x4 matrix from the given quaternion\n *\n * @param {mat4} out mat4 receiving operation result\n * @param {ReadonlyQuat} q Quaternion to create matrix from\n *\n * @returns {mat4} out\n */\n\n\nfunction fromQuat(out, q) {\n var x = q[0],\n y = q[1],\n z = q[2],\n w = q[3];\n var x2 = x + x;\n var y2 = y + y;\n var z2 = z + z;\n var xx = x * x2;\n var yx = y * x2;\n var yy = y * y2;\n var zx = z * x2;\n var zy = z * y2;\n var zz = z * z2;\n var wx = w * x2;\n var wy = w * y2;\n var wz = w * z2;\n out[0] = 1 - yy - zz;\n out[1] = yx + wz;\n out[2] = zx - wy;\n out[3] = 0;\n out[4] = yx - wz;\n out[5] = 1 - xx - zz;\n out[6] = zy + wx;\n out[7] = 0;\n out[8] = zx + wy;\n out[9] = zy - wx;\n out[10] = 1 - xx - yy;\n out[11] = 0;\n out[12] = 0;\n out[13] = 0;\n out[14] = 0;\n out[15] = 1;\n return out;\n}\n/**\n * Generates a frustum matrix with the given bounds\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {Number} left Left bound of the frustum\n * @param {Number} right Right bound of the frustum\n * @param {Number} bottom Bottom bound of the frustum\n * @param {Number} top Top bound of the frustum\n * @param {Number} near Near bound of the frustum\n * @param {Number} far Far bound of the frustum\n * @returns {mat4} out\n */\n\n\nfunction frustum(out, left, right, bottom, top, near, far) {\n var rl = 1 / (right - left);\n var tb = 1 / (top - bottom);\n var nf = 1 / (near - far);\n out[0] = near * 2 * rl;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = near * 2 * tb;\n out[6] = 0;\n out[7] = 0;\n out[8] = (right + left) * rl;\n out[9] = (top + bottom) * tb;\n out[10] = (far + near) * nf;\n out[11] = -1;\n out[12] = 0;\n out[13] = 0;\n out[14] = far * near * 2 * nf;\n out[15] = 0;\n return out;\n}\n/**\n * Generates a perspective projection matrix with the given bounds.\n * The near/far clip planes correspond to a normalized device coordinate Z range of [-1, 1],\n * which matches WebGL/OpenGL's clip volume.\n * Passing null/undefined/no value for far will generate infinite projection matrix.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {number} fovy Vertical field of view in radians\n * @param {number} aspect Aspect ratio. typically viewport width/height\n * @param {number} near Near bound of the frustum\n * @param {number} far Far bound of the frustum, can be null or Infinity\n * @returns {mat4} out\n */\n\n\nfunction perspectiveNO(out, fovy, aspect, near, far) {\n var f = 1.0 / Math.tan(fovy / 2),\n nf;\n out[0] = f / aspect;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = f;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[11] = -1;\n out[12] = 0;\n out[13] = 0;\n out[15] = 0;\n\n if (far != null && far !== Infinity) {\n nf = 1 / (near - far);\n out[10] = (far + near) * nf;\n out[14] = 2 * far * near * nf;\n } else {\n out[10] = -1;\n out[14] = -2 * near;\n }\n\n return out;\n}\n/**\n * Alias for {@link mat4.perspectiveNO}\n * @function\n */\n\n\nvar perspective = perspectiveNO;\n/**\n * Generates a perspective projection matrix suitable for WebGPU with the given bounds.\n * The near/far clip planes correspond to a normalized device coordinate Z range of [0, 1],\n * which matches WebGPU/Vulkan/DirectX/Metal's clip volume.\n * Passing null/undefined/no value for far will generate infinite projection matrix.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {number} fovy Vertical field of view in radians\n * @param {number} aspect Aspect ratio. typically viewport width/height\n * @param {number} near Near bound of the frustum\n * @param {number} far Far bound of the frustum, can be null or Infinity\n * @returns {mat4} out\n */\n\nexports.perspective = perspective;\n\nfunction perspectiveZO(out, fovy, aspect, near, far) {\n var f = 1.0 / Math.tan(fovy / 2),\n nf;\n out[0] = f / aspect;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = f;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[11] = -1;\n out[12] = 0;\n out[13] = 0;\n out[15] = 0;\n\n if (far != null && far !== Infinity) {\n nf = 1 / (near - far);\n out[10] = far * nf;\n out[14] = far * near * nf;\n } else {\n out[10] = -1;\n out[14] = -near;\n }\n\n return out;\n}\n/**\n * Generates a perspective projection matrix with the given field of view.\n * This is primarily useful for generating projection matrices to be used\n * with the still experiemental WebVR API.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {Object} fov Object containing the following values: upDegrees, downDegrees, leftDegrees, rightDegrees\n * @param {number} near Near bound of the frustum\n * @param {number} far Far bound of the frustum\n * @returns {mat4} out\n */\n\n\nfunction perspectiveFromFieldOfView(out, fov, near, far) {\n var upTan = Math.tan(fov.upDegrees * Math.PI / 180.0);\n var downTan = Math.tan(fov.downDegrees * Math.PI / 180.0);\n var leftTan = Math.tan(fov.leftDegrees * Math.PI / 180.0);\n var rightTan = Math.tan(fov.rightDegrees * Math.PI / 180.0);\n var xScale = 2.0 / (leftTan + rightTan);\n var yScale = 2.0 / (upTan + downTan);\n out[0] = xScale;\n out[1] = 0.0;\n out[2] = 0.0;\n out[3] = 0.0;\n out[4] = 0.0;\n out[5] = yScale;\n out[6] = 0.0;\n out[7] = 0.0;\n out[8] = -((leftTan - rightTan) * xScale * 0.5);\n out[9] = (upTan - downTan) * yScale * 0.5;\n out[10] = far / (near - far);\n out[11] = -1.0;\n out[12] = 0.0;\n out[13] = 0.0;\n out[14] = far * near / (near - far);\n out[15] = 0.0;\n return out;\n}\n/**\n * Generates a orthogonal projection matrix with the given bounds.\n * The near/far clip planes correspond to a normalized device coordinate Z range of [-1, 1],\n * which matches WebGL/OpenGL's clip volume.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {number} left Left bound of the frustum\n * @param {number} right Right bound of the frustum\n * @param {number} bottom Bottom bound of the frustum\n * @param {number} top Top bound of the frustum\n * @param {number} near Near bound of the frustum\n * @param {number} far Far bound of the frustum\n * @returns {mat4} out\n */\n\n\nfunction orthoNO(out, left, right, bottom, top, near, far) {\n var lr = 1 / (left - right);\n var bt = 1 / (bottom - top);\n var nf = 1 / (near - far);\n out[0] = -2 * lr;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = -2 * bt;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = 2 * nf;\n out[11] = 0;\n out[12] = (left + right) * lr;\n out[13] = (top + bottom) * bt;\n out[14] = (far + near) * nf;\n out[15] = 1;\n return out;\n}\n/**\n * Alias for {@link mat4.orthoNO}\n * @function\n */\n\n\nvar ortho = orthoNO;\n/**\n * Generates a orthogonal projection matrix with the given bounds.\n * The near/far clip planes correspond to a normalized device coordinate Z range of [0, 1],\n * which matches WebGPU/Vulkan/DirectX/Metal's clip volume.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {number} left Left bound of the frustum\n * @param {number} right Right bound of the frustum\n * @param {number} bottom Bottom bound of the frustum\n * @param {number} top Top bound of the frustum\n * @param {number} near Near bound of the frustum\n * @param {number} far Far bound of the frustum\n * @returns {mat4} out\n */\n\nexports.ortho = ortho;\n\nfunction orthoZO(out, left, right, bottom, top, near, far) {\n var lr = 1 / (left - right);\n var bt = 1 / (bottom - top);\n var nf = 1 / (near - far);\n out[0] = -2 * lr;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n out[4] = 0;\n out[5] = -2 * bt;\n out[6] = 0;\n out[7] = 0;\n out[8] = 0;\n out[9] = 0;\n out[10] = nf;\n out[11] = 0;\n out[12] = (left + right) * lr;\n out[13] = (top + bottom) * bt;\n out[14] = near * nf;\n out[15] = 1;\n return out;\n}\n/**\n * Generates a look-at matrix with the given eye position, focal point, and up axis.\n * If you want a matrix that actually makes an object look at another object, you should use targetTo instead.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {ReadonlyVec3} eye Position of the viewer\n * @param {ReadonlyVec3} center Point the viewer is looking at\n * @param {ReadonlyVec3} up vec3 pointing up\n * @returns {mat4} out\n */\n\n\nfunction lookAt(out, eye, center, up) {\n var x0, x1, x2, y0, y1, y2, z0, z1, z2, len;\n var eyex = eye[0];\n var eyey = eye[1];\n var eyez = eye[2];\n var upx = up[0];\n var upy = up[1];\n var upz = up[2];\n var centerx = center[0];\n var centery = center[1];\n var centerz = center[2];\n\n if (Math.abs(eyex - centerx) < glMatrix.EPSILON && Math.abs(eyey - centery) < glMatrix.EPSILON && Math.abs(eyez - centerz) < glMatrix.EPSILON) {\n return identity(out);\n }\n\n z0 = eyex - centerx;\n z1 = eyey - centery;\n z2 = eyez - centerz;\n len = 1 / Math.hypot(z0, z1, z2);\n z0 *= len;\n z1 *= len;\n z2 *= len;\n x0 = upy * z2 - upz * z1;\n x1 = upz * z0 - upx * z2;\n x2 = upx * z1 - upy * z0;\n len = Math.hypot(x0, x1, x2);\n\n if (!len) {\n x0 = 0;\n x1 = 0;\n x2 = 0;\n } else {\n len = 1 / len;\n x0 *= len;\n x1 *= len;\n x2 *= len;\n }\n\n y0 = z1 * x2 - z2 * x1;\n y1 = z2 * x0 - z0 * x2;\n y2 = z0 * x1 - z1 * x0;\n len = Math.hypot(y0, y1, y2);\n\n if (!len) {\n y0 = 0;\n y1 = 0;\n y2 = 0;\n } else {\n len = 1 / len;\n y0 *= len;\n y1 *= len;\n y2 *= len;\n }\n\n out[0] = x0;\n out[1] = y0;\n out[2] = z0;\n out[3] = 0;\n out[4] = x1;\n out[5] = y1;\n out[6] = z1;\n out[7] = 0;\n out[8] = x2;\n out[9] = y2;\n out[10] = z2;\n out[11] = 0;\n out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);\n out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);\n out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);\n out[15] = 1;\n return out;\n}\n/**\n * Generates a matrix that makes something look at something else.\n *\n * @param {mat4} out mat4 frustum matrix will be written into\n * @param {ReadonlyVec3} eye Position of the viewer\n * @param {ReadonlyVec3} center Point the viewer is looking at\n * @param {ReadonlyVec3} up vec3 pointing up\n * @returns {mat4} out\n */\n\n\nfunction targetTo(out, eye, target, up) {\n var eyex = eye[0],\n eyey = eye[1],\n eyez = eye[2],\n upx = up[0],\n upy = up[1],\n upz = up[2];\n var z0 = eyex - target[0],\n z1 = eyey - target[1],\n z2 = eyez - target[2];\n var len = z0 * z0 + z1 * z1 + z2 * z2;\n\n if (len > 0) {\n len = 1 / Math.sqrt(len);\n z0 *= len;\n z1 *= len;\n z2 *= len;\n }\n\n var x0 = upy * z2 - upz * z1,\n x1 = upz * z0 - upx * z2,\n x2 = upx * z1 - upy * z0;\n len = x0 * x0 + x1 * x1 + x2 * x2;\n\n if (len > 0) {\n len = 1 / Math.sqrt(len);\n x0 *= len;\n x1 *= len;\n x2 *= len;\n }\n\n out[0] = x0;\n out[1] = x1;\n out[2] = x2;\n out[3] = 0;\n out[4] = z1 * x2 - z2 * x1;\n out[5] = z2 * x0 - z0 * x2;\n out[6] = z0 * x1 - z1 * x0;\n out[7] = 0;\n out[8] = z0;\n out[9] = z1;\n out[10] = z2;\n out[11] = 0;\n out[12] = eyex;\n out[13] = eyey;\n out[14] = eyez;\n out[15] = 1;\n return out;\n}\n/**\n * Returns a string representation of a mat4\n *\n * @param {ReadonlyMat4} a matrix to represent as a string\n * @returns {String} string representation of the matrix\n */\n\n\nfunction str(a) {\n return \"mat4(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \", \" + a[4] + \", \" + a[5] + \", \" + a[6] + \", \" + a[7] + \", \" + a[8] + \", \" + a[9] + \", \" + a[10] + \", \" + a[11] + \", \" + a[12] + \", \" + a[13] + \", \" + a[14] + \", \" + a[15] + \")\";\n}\n/**\n * Returns Frobenius norm of a mat4\n *\n * @param {ReadonlyMat4} a the matrix to calculate Frobenius norm of\n * @returns {Number} Frobenius norm\n */\n\n\nfunction frob(a) {\n return Math.hypot(a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], a[10], a[11], a[12], a[13], a[14], a[15]);\n}\n/**\n * Adds two mat4's\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the first operand\n * @param {ReadonlyMat4} b the second operand\n * @returns {mat4} out\n */\n\n\nfunction add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n out[4] = a[4] + b[4];\n out[5] = a[5] + b[5];\n out[6] = a[6] + b[6];\n out[7] = a[7] + b[7];\n out[8] = a[8] + b[8];\n out[9] = a[9] + b[9];\n out[10] = a[10] + b[10];\n out[11] = a[11] + b[11];\n out[12] = a[12] + b[12];\n out[13] = a[13] + b[13];\n out[14] = a[14] + b[14];\n out[15] = a[15] + b[15];\n return out;\n}\n/**\n * Subtracts matrix b from matrix a\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the first operand\n * @param {ReadonlyMat4} b the second operand\n * @returns {mat4} out\n */\n\n\nfunction subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n out[3] = a[3] - b[3];\n out[4] = a[4] - b[4];\n out[5] = a[5] - b[5];\n out[6] = a[6] - b[6];\n out[7] = a[7] - b[7];\n out[8] = a[8] - b[8];\n out[9] = a[9] - b[9];\n out[10] = a[10] - b[10];\n out[11] = a[11] - b[11];\n out[12] = a[12] - b[12];\n out[13] = a[13] - b[13];\n out[14] = a[14] - b[14];\n out[15] = a[15] - b[15];\n return out;\n}\n/**\n * Multiply each element of the matrix by a scalar.\n *\n * @param {mat4} out the receiving matrix\n * @param {ReadonlyMat4} a the matrix to scale\n * @param {Number} b amount to scale the matrix's elements by\n * @returns {mat4} out\n */\n\n\nfunction multiplyScalar(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n out[4] = a[4] * b;\n out[5] = a[5] * b;\n out[6] = a[6] * b;\n out[7] = a[7] * b;\n out[8] = a[8] * b;\n out[9] = a[9] * b;\n out[10] = a[10] * b;\n out[11] = a[11] * b;\n out[12] = a[12] * b;\n out[13] = a[13] * b;\n out[14] = a[14] * b;\n out[15] = a[15] * b;\n return out;\n}\n/**\n * Adds two mat4's after multiplying each element of the second operand by a scalar value.\n *\n * @param {mat4} out the receiving vector\n * @param {ReadonlyMat4} a the first operand\n * @param {ReadonlyMat4} b the second operand\n * @param {Number} scale the amount to scale b's elements by before adding\n * @returns {mat4} out\n */\n\n\nfunction multiplyScalarAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n out[3] = a[3] + b[3] * scale;\n out[4] = a[4] + b[4] * scale;\n out[5] = a[5] + b[5] * scale;\n out[6] = a[6] + b[6] * scale;\n out[7] = a[7] + b[7] * scale;\n out[8] = a[8] + b[8] * scale;\n out[9] = a[9] + b[9] * scale;\n out[10] = a[10] + b[10] * scale;\n out[11] = a[11] + b[11] * scale;\n out[12] = a[12] + b[12] * scale;\n out[13] = a[13] + b[13] * scale;\n out[14] = a[14] + b[14] * scale;\n out[15] = a[15] + b[15] * scale;\n return out;\n}\n/**\n * Returns whether or not the matrices have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyMat4} a The first matrix.\n * @param {ReadonlyMat4} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\n\nfunction exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7] && a[8] === b[8] && a[9] === b[9] && a[10] === b[10] && a[11] === b[11] && a[12] === b[12] && a[13] === b[13] && a[14] === b[14] && a[15] === b[15];\n}\n/**\n * Returns whether or not the matrices have approximately the same elements in the same position.\n *\n * @param {ReadonlyMat4} a The first matrix.\n * @param {ReadonlyMat4} b The second matrix.\n * @returns {Boolean} True if the matrices are equal, false otherwise.\n */\n\n\nfunction equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var a4 = a[4],\n a5 = a[5],\n a6 = a[6],\n a7 = a[7];\n var a8 = a[8],\n a9 = a[9],\n a10 = a[10],\n a11 = a[11];\n var a12 = a[12],\n a13 = a[13],\n a14 = a[14],\n a15 = a[15];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n var b4 = b[4],\n b5 = b[5],\n b6 = b[6],\n b7 = b[7];\n var b8 = b[8],\n b9 = b[9],\n b10 = b[10],\n b11 = b[11];\n var b12 = b[12],\n b13 = b[13],\n b14 = b[14],\n b15 = b[15];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3)) && Math.abs(a4 - b4) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a4), Math.abs(b4)) && Math.abs(a5 - b5) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a5), Math.abs(b5)) && Math.abs(a6 - b6) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a6), Math.abs(b6)) && Math.abs(a7 - b7) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a7), Math.abs(b7)) && Math.abs(a8 - b8) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a8), Math.abs(b8)) && Math.abs(a9 - b9) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a9), Math.abs(b9)) && Math.abs(a10 - b10) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a10), Math.abs(b10)) && Math.abs(a11 - b11) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a11), Math.abs(b11)) && Math.abs(a12 - b12) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a12), Math.abs(b12)) && Math.abs(a13 - b13) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a13), Math.abs(b13)) && Math.abs(a14 - b14) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a14), Math.abs(b14)) && Math.abs(a15 - b15) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a15), Math.abs(b15));\n}\n/**\n * Alias for {@link mat4.multiply}\n * @function\n */\n\n\nvar mul = multiply;\n/**\n * Alias for {@link mat4.subtract}\n * @function\n */\n\nexports.mul = mul;\nvar sub = subtract;\nexports.sub = sub;", "\"use strict\";\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.create = create;\nexports.clone = clone;\nexports.length = length;\nexports.fromValues = fromValues;\nexports.copy = copy;\nexports.set = set;\nexports.add = add;\nexports.subtract = subtract;\nexports.multiply = multiply;\nexports.divide = divide;\nexports.ceil = ceil;\nexports.floor = floor;\nexports.min = min;\nexports.max = max;\nexports.round = round;\nexports.scale = scale;\nexports.scaleAndAdd = scaleAndAdd;\nexports.distance = distance;\nexports.squaredDistance = squaredDistance;\nexports.squaredLength = squaredLength;\nexports.negate = negate;\nexports.inverse = inverse;\nexports.normalize = normalize;\nexports.dot = dot;\nexports.cross = cross;\nexports.lerp = lerp;\nexports.hermite = hermite;\nexports.bezier = bezier;\nexports.random = random;\nexports.transformMat4 = transformMat4;\nexports.transformMat3 = transformMat3;\nexports.transformQuat = transformQuat;\nexports.rotateX = rotateX;\nexports.rotateY = rotateY;\nexports.rotateZ = rotateZ;\nexports.angle = angle;\nexports.zero = zero;\nexports.str = str;\nexports.exactEquals = exactEquals;\nexports.equals = equals;\nexports.forEach = exports.sqrLen = exports.len = exports.sqrDist = exports.dist = exports.div = exports.mul = exports.sub = void 0;\n\nvar glMatrix = _interopRequireWildcard(require(\"./common.js\"));\n\nfunction _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== \"function\") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }\n\nfunction _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== \"object\" && typeof obj !== \"function\") { return { \"default\": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== \"default\" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj[\"default\"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }\n\n/**\n * 3 Dimensional Vector\n * @module vec3\n */\n\n/**\n * Creates a new, empty vec3\n *\n * @returns {vec3} a new 3D vector\n */\nfunction create() {\n var out = new glMatrix.ARRAY_TYPE(3);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n }\n\n return out;\n}\n/**\n * Creates a new vec3 initialized with values from an existing vector\n *\n * @param {ReadonlyVec3} a vector to clone\n * @returns {vec3} a new 3D vector\n */\n\n\nfunction clone(a) {\n var out = new glMatrix.ARRAY_TYPE(3);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n return out;\n}\n/**\n * Calculates the length of a vec3\n *\n * @param {ReadonlyVec3} a vector to calculate length of\n * @returns {Number} length of a\n */\n\n\nfunction length(a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n return Math.hypot(x, y, z);\n}\n/**\n * Creates a new vec3 initialized with the given values\n *\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @returns {vec3} a new 3D vector\n */\n\n\nfunction fromValues(x, y, z) {\n var out = new glMatrix.ARRAY_TYPE(3);\n out[0] = x;\n out[1] = y;\n out[2] = z;\n return out;\n}\n/**\n * Copy the values from one vec3 to another\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the source vector\n * @returns {vec3} out\n */\n\n\nfunction copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n return out;\n}\n/**\n * Set the components of a vec3 to the given values\n *\n * @param {vec3} out the receiving vector\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @returns {vec3} out\n */\n\n\nfunction set(out, x, y, z) {\n out[0] = x;\n out[1] = y;\n out[2] = z;\n return out;\n}\n/**\n * Adds two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\n\nfunction add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n return out;\n}\n/**\n * Subtracts vector b from vector a\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\n\nfunction subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n return out;\n}\n/**\n * Multiplies two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\n\nfunction multiply(out, a, b) {\n out[0] = a[0] * b[0];\n out[1] = a[1] * b[1];\n out[2] = a[2] * b[2];\n return out;\n}\n/**\n * Divides two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\n\nfunction divide(out, a, b) {\n out[0] = a[0] / b[0];\n out[1] = a[1] / b[1];\n out[2] = a[2] / b[2];\n return out;\n}\n/**\n * Math.ceil the components of a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a vector to ceil\n * @returns {vec3} out\n */\n\n\nfunction ceil(out, a) {\n out[0] = Math.ceil(a[0]);\n out[1] = Math.ceil(a[1]);\n out[2] = Math.ceil(a[2]);\n return out;\n}\n/**\n * Math.floor the components of a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a vector to floor\n * @returns {vec3} out\n */\n\n\nfunction floor(out, a) {\n out[0] = Math.floor(a[0]);\n out[1] = Math.floor(a[1]);\n out[2] = Math.floor(a[2]);\n return out;\n}\n/**\n * Returns the minimum of two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\n\nfunction min(out, a, b) {\n out[0] = Math.min(a[0], b[0]);\n out[1] = Math.min(a[1], b[1]);\n out[2] = Math.min(a[2], b[2]);\n return out;\n}\n/**\n * Returns the maximum of two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\n\nfunction max(out, a, b) {\n out[0] = Math.max(a[0], b[0]);\n out[1] = Math.max(a[1], b[1]);\n out[2] = Math.max(a[2], b[2]);\n return out;\n}\n/**\n * Math.round the components of a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a vector to round\n * @returns {vec3} out\n */\n\n\nfunction round(out, a) {\n out[0] = Math.round(a[0]);\n out[1] = Math.round(a[1]);\n out[2] = Math.round(a[2]);\n return out;\n}\n/**\n * Scales a vec3 by a scalar number\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the vector to scale\n * @param {Number} b amount to scale the vector by\n * @returns {vec3} out\n */\n\n\nfunction scale(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n return out;\n}\n/**\n * Adds two vec3's after scaling the second operand by a scalar value\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @param {Number} scale the amount to scale b by before adding\n * @returns {vec3} out\n */\n\n\nfunction scaleAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n return out;\n}\n/**\n * Calculates the euclidian distance between two vec3's\n *\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {Number} distance between a and b\n */\n\n\nfunction distance(a, b) {\n var x = b[0] - a[0];\n var y = b[1] - a[1];\n var z = b[2] - a[2];\n return Math.hypot(x, y, z);\n}\n/**\n * Calculates the squared euclidian distance between two vec3's\n *\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {Number} squared distance between a and b\n */\n\n\nfunction squaredDistance(a, b) {\n var x = b[0] - a[0];\n var y = b[1] - a[1];\n var z = b[2] - a[2];\n return x * x + y * y + z * z;\n}\n/**\n * Calculates the squared length of a vec3\n *\n * @param {ReadonlyVec3} a vector to calculate squared length of\n * @returns {Number} squared length of a\n */\n\n\nfunction squaredLength(a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n return x * x + y * y + z * z;\n}\n/**\n * Negates the components of a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a vector to negate\n * @returns {vec3} out\n */\n\n\nfunction negate(out, a) {\n out[0] = -a[0];\n out[1] = -a[1];\n out[2] = -a[2];\n return out;\n}\n/**\n * Returns the inverse of the components of a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a vector to invert\n * @returns {vec3} out\n */\n\n\nfunction inverse(out, a) {\n out[0] = 1.0 / a[0];\n out[1] = 1.0 / a[1];\n out[2] = 1.0 / a[2];\n return out;\n}\n/**\n * Normalize a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a vector to normalize\n * @returns {vec3} out\n */\n\n\nfunction normalize(out, a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n var len = x * x + y * y + z * z;\n\n if (len > 0) {\n //TODO: evaluate use of glm_invsqrt here?\n len = 1 / Math.sqrt(len);\n }\n\n out[0] = a[0] * len;\n out[1] = a[1] * len;\n out[2] = a[2] * len;\n return out;\n}\n/**\n * Calculates the dot product of two vec3's\n *\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {Number} dot product of a and b\n */\n\n\nfunction dot(a, b) {\n return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];\n}\n/**\n * Computes the cross product of two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @returns {vec3} out\n */\n\n\nfunction cross(out, a, b) {\n var ax = a[0],\n ay = a[1],\n az = a[2];\n var bx = b[0],\n by = b[1],\n bz = b[2];\n out[0] = ay * bz - az * by;\n out[1] = az * bx - ax * bz;\n out[2] = ax * by - ay * bx;\n return out;\n}\n/**\n * Performs a linear interpolation between two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {vec3} out\n */\n\n\nfunction lerp(out, a, b, t) {\n var ax = a[0];\n var ay = a[1];\n var az = a[2];\n out[0] = ax + t * (b[0] - ax);\n out[1] = ay + t * (b[1] - ay);\n out[2] = az + t * (b[2] - az);\n return out;\n}\n/**\n * Performs a hermite interpolation with two control points\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @param {ReadonlyVec3} c the third operand\n * @param {ReadonlyVec3} d the fourth operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {vec3} out\n */\n\n\nfunction hermite(out, a, b, c, d, t) {\n var factorTimes2 = t * t;\n var factor1 = factorTimes2 * (2 * t - 3) + 1;\n var factor2 = factorTimes2 * (t - 2) + t;\n var factor3 = factorTimes2 * (t - 1);\n var factor4 = factorTimes2 * (3 - 2 * t);\n out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;\n out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;\n out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;\n return out;\n}\n/**\n * Performs a bezier interpolation with two control points\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the first operand\n * @param {ReadonlyVec3} b the second operand\n * @param {ReadonlyVec3} c the third operand\n * @param {ReadonlyVec3} d the fourth operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {vec3} out\n */\n\n\nfunction bezier(out, a, b, c, d, t) {\n var inverseFactor = 1 - t;\n var inverseFactorTimesTwo = inverseFactor * inverseFactor;\n var factorTimes2 = t * t;\n var factor1 = inverseFactorTimesTwo * inverseFactor;\n var factor2 = 3 * t * inverseFactorTimesTwo;\n var factor3 = 3 * factorTimes2 * inverseFactor;\n var factor4 = factorTimes2 * t;\n out[0] = a[0] * factor1 + b[0] * factor2 + c[0] * factor3 + d[0] * factor4;\n out[1] = a[1] * factor1 + b[1] * factor2 + c[1] * factor3 + d[1] * factor4;\n out[2] = a[2] * factor1 + b[2] * factor2 + c[2] * factor3 + d[2] * factor4;\n return out;\n}\n/**\n * Generates a random vector with the given scale\n *\n * @param {vec3} out the receiving vector\n * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned\n * @returns {vec3} out\n */\n\n\nfunction random(out, scale) {\n scale = scale || 1.0;\n var r = glMatrix.RANDOM() * 2.0 * Math.PI;\n var z = glMatrix.RANDOM() * 2.0 - 1.0;\n var zScale = Math.sqrt(1.0 - z * z) * scale;\n out[0] = Math.cos(r) * zScale;\n out[1] = Math.sin(r) * zScale;\n out[2] = z * scale;\n return out;\n}\n/**\n * Transforms the vec3 with a mat4.\n * 4th vector component is implicitly '1'\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the vector to transform\n * @param {ReadonlyMat4} m matrix to transform with\n * @returns {vec3} out\n */\n\n\nfunction transformMat4(out, a, m) {\n var x = a[0],\n y = a[1],\n z = a[2];\n var w = m[3] * x + m[7] * y + m[11] * z + m[15];\n w = w || 1.0;\n out[0] = (m[0] * x + m[4] * y + m[8] * z + m[12]) / w;\n out[1] = (m[1] * x + m[5] * y + m[9] * z + m[13]) / w;\n out[2] = (m[2] * x + m[6] * y + m[10] * z + m[14]) / w;\n return out;\n}\n/**\n * Transforms the vec3 with a mat3.\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the vector to transform\n * @param {ReadonlyMat3} m the 3x3 matrix to transform with\n * @returns {vec3} out\n */\n\n\nfunction transformMat3(out, a, m) {\n var x = a[0],\n y = a[1],\n z = a[2];\n out[0] = x * m[0] + y * m[3] + z * m[6];\n out[1] = x * m[1] + y * m[4] + z * m[7];\n out[2] = x * m[2] + y * m[5] + z * m[8];\n return out;\n}\n/**\n * Transforms the vec3 with a quat\n * Can also be used for dual quaternions. (Multiply it with the real part)\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec3} a the vector to transform\n * @param {ReadonlyQuat} q quaternion to transform with\n * @returns {vec3} out\n */\n\n\nfunction transformQuat(out, a, q) {\n // benchmarks: https://jsperf.com/quaternion-transform-vec3-implementations-fixed\n var qx = q[0],\n qy = q[1],\n qz = q[2],\n qw = q[3];\n var x = a[0],\n y = a[1],\n z = a[2]; // var qvec = [qx, qy, qz];\n // var uv = vec3.cross([], qvec, a);\n\n var uvx = qy * z - qz * y,\n uvy = qz * x - qx * z,\n uvz = qx * y - qy * x; // var uuv = vec3.cross([], qvec, uv);\n\n var uuvx = qy * uvz - qz * uvy,\n uuvy = qz * uvx - qx * uvz,\n uuvz = qx * uvy - qy * uvx; // vec3.scale(uv, uv, 2 * w);\n\n var w2 = qw * 2;\n uvx *= w2;\n uvy *= w2;\n uvz *= w2; // vec3.scale(uuv, uuv, 2);\n\n uuvx *= 2;\n uuvy *= 2;\n uuvz *= 2; // return vec3.add(out, a, vec3.add(out, uv, uuv));\n\n out[0] = x + uvx + uuvx;\n out[1] = y + uvy + uuvy;\n out[2] = z + uvz + uuvz;\n return out;\n}\n/**\n * Rotate a 3D vector around the x-axis\n * @param {vec3} out The receiving vec3\n * @param {ReadonlyVec3} a The vec3 point to rotate\n * @param {ReadonlyVec3} b The origin of the rotation\n * @param {Number} rad The angle of rotation in radians\n * @returns {vec3} out\n */\n\n\nfunction rotateX(out, a, b, rad) {\n var p = [],\n r = []; //Translate point to the origin\n\n p[0] = a[0] - b[0];\n p[1] = a[1] - b[1];\n p[2] = a[2] - b[2]; //perform rotation\n\n r[0] = p[0];\n r[1] = p[1] * Math.cos(rad) - p[2] * Math.sin(rad);\n r[2] = p[1] * Math.sin(rad) + p[2] * Math.cos(rad); //translate to correct position\n\n out[0] = r[0] + b[0];\n out[1] = r[1] + b[1];\n out[2] = r[2] + b[2];\n return out;\n}\n/**\n * Rotate a 3D vector around the y-axis\n * @param {vec3} out The receiving vec3\n * @param {ReadonlyVec3} a The vec3 point to rotate\n * @param {ReadonlyVec3} b The origin of the rotation\n * @param {Number} rad The angle of rotation in radians\n * @returns {vec3} out\n */\n\n\nfunction rotateY(out, a, b, rad) {\n var p = [],\n r = []; //Translate point to the origin\n\n p[0] = a[0] - b[0];\n p[1] = a[1] - b[1];\n p[2] = a[2] - b[2]; //perform rotation\n\n r[0] = p[2] * Math.sin(rad) + p[0] * Math.cos(rad);\n r[1] = p[1];\n r[2] = p[2] * Math.cos(rad) - p[0] * Math.sin(rad); //translate to correct position\n\n out[0] = r[0] + b[0];\n out[1] = r[1] + b[1];\n out[2] = r[2] + b[2];\n return out;\n}\n/**\n * Rotate a 3D vector around the z-axis\n * @param {vec3} out The receiving vec3\n * @param {ReadonlyVec3} a The vec3 point to rotate\n * @param {ReadonlyVec3} b The origin of the rotation\n * @param {Number} rad The angle of rotation in radians\n * @returns {vec3} out\n */\n\n\nfunction rotateZ(out, a, b, rad) {\n var p = [],\n r = []; //Translate point to the origin\n\n p[0] = a[0] - b[0];\n p[1] = a[1] - b[1];\n p[2] = a[2] - b[2]; //perform rotation\n\n r[0] = p[0] * Math.cos(rad) - p[1] * Math.sin(rad);\n r[1] = p[0] * Math.sin(rad) + p[1] * Math.cos(rad);\n r[2] = p[2]; //translate to correct position\n\n out[0] = r[0] + b[0];\n out[1] = r[1] + b[1];\n out[2] = r[2] + b[2];\n return out;\n}\n/**\n * Get the angle between two 3D vectors\n * @param {ReadonlyVec3} a The first operand\n * @param {ReadonlyVec3} b The second operand\n * @returns {Number} The angle in radians\n */\n\n\nfunction angle(a, b) {\n var ax = a[0],\n ay = a[1],\n az = a[2],\n bx = b[0],\n by = b[1],\n bz = b[2],\n mag1 = Math.sqrt(ax * ax + ay * ay + az * az),\n mag2 = Math.sqrt(bx * bx + by * by + bz * bz),\n mag = mag1 * mag2,\n cosine = mag && dot(a, b) / mag;\n return Math.acos(Math.min(Math.max(cosine, -1), 1));\n}\n/**\n * Set the components of a vec3 to zero\n *\n * @param {vec3} out the receiving vector\n * @returns {vec3} out\n */\n\n\nfunction zero(out) {\n out[0] = 0.0;\n out[1] = 0.0;\n out[2] = 0.0;\n return out;\n}\n/**\n * Returns a string representation of a vector\n *\n * @param {ReadonlyVec3} a vector to represent as a string\n * @returns {String} string representation of the vector\n */\n\n\nfunction str(a) {\n return \"vec3(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \")\";\n}\n/**\n * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyVec3} a The first vector.\n * @param {ReadonlyVec3} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\n\nfunction exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2];\n}\n/**\n * Returns whether or not the vectors have approximately the same elements in the same position.\n *\n * @param {ReadonlyVec3} a The first vector.\n * @param {ReadonlyVec3} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\n\nfunction equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2));\n}\n/**\n * Alias for {@link vec3.subtract}\n * @function\n */\n\n\nvar sub = subtract;\n/**\n * Alias for {@link vec3.multiply}\n * @function\n */\n\nexports.sub = sub;\nvar mul = multiply;\n/**\n * Alias for {@link vec3.divide}\n * @function\n */\n\nexports.mul = mul;\nvar div = divide;\n/**\n * Alias for {@link vec3.distance}\n * @function\n */\n\nexports.div = div;\nvar dist = distance;\n/**\n * Alias for {@link vec3.squaredDistance}\n * @function\n */\n\nexports.dist = dist;\nvar sqrDist = squaredDistance;\n/**\n * Alias for {@link vec3.length}\n * @function\n */\n\nexports.sqrDist = sqrDist;\nvar len = length;\n/**\n * Alias for {@link vec3.squaredLength}\n * @function\n */\n\nexports.len = len;\nvar sqrLen = squaredLength;\n/**\n * Perform some operation over an array of vec3s.\n *\n * @param {Array} a the array of vectors to iterate over\n * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed\n * @param {Number} offset Number of elements to skip at the beginning of the array\n * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array\n * @param {Function} fn Function to call for each vector in the array\n * @param {Object} [arg] additional argument to pass to fn\n * @returns {Array} a\n * @function\n */\n\nexports.sqrLen = sqrLen;\n\nvar forEach = function () {\n var vec = create();\n return function (a, stride, offset, count, fn, arg) {\n var i, l;\n\n if (!stride) {\n stride = 3;\n }\n\n if (!offset) {\n offset = 0;\n }\n\n if (count) {\n l = Math.min(count * stride + offset, a.length);\n } else {\n l = a.length;\n }\n\n for (i = offset; i < l; i += stride) {\n vec[0] = a[i];\n vec[1] = a[i + 1];\n vec[2] = a[i + 2];\n fn(vec, vec, arg);\n a[i] = vec[0];\n a[i + 1] = vec[1];\n a[i + 2] = vec[2];\n }\n\n return a;\n };\n}();\n\nexports.forEach = forEach;", "\"use strict\";\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.create = create;\nexports.clone = clone;\nexports.fromValues = fromValues;\nexports.copy = copy;\nexports.set = set;\nexports.add = add;\nexports.subtract = subtract;\nexports.multiply = multiply;\nexports.divide = divide;\nexports.ceil = ceil;\nexports.floor = floor;\nexports.min = min;\nexports.max = max;\nexports.round = round;\nexports.scale = scale;\nexports.scaleAndAdd = scaleAndAdd;\nexports.distance = distance;\nexports.squaredDistance = squaredDistance;\nexports.length = length;\nexports.squaredLength = squaredLength;\nexports.negate = negate;\nexports.inverse = inverse;\nexports.normalize = normalize;\nexports.dot = dot;\nexports.cross = cross;\nexports.lerp = lerp;\nexports.random = random;\nexports.transformMat4 = transformMat4;\nexports.transformQuat = transformQuat;\nexports.zero = zero;\nexports.str = str;\nexports.exactEquals = exactEquals;\nexports.equals = equals;\nexports.forEach = exports.sqrLen = exports.len = exports.sqrDist = exports.dist = exports.div = exports.mul = exports.sub = void 0;\n\nvar glMatrix = _interopRequireWildcard(require(\"./common.js\"));\n\nfunction _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== \"function\") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }\n\nfunction _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== \"object\" && typeof obj !== \"function\") { return { \"default\": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== \"default\" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj[\"default\"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }\n\n/**\n * 4 Dimensional Vector\n * @module vec4\n */\n\n/**\n * Creates a new, empty vec4\n *\n * @returns {vec4} a new 4D vector\n */\nfunction create() {\n var out = new glMatrix.ARRAY_TYPE(4);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n out[3] = 0;\n }\n\n return out;\n}\n/**\n * Creates a new vec4 initialized with values from an existing vector\n *\n * @param {ReadonlyVec4} a vector to clone\n * @returns {vec4} a new 4D vector\n */\n\n\nfunction clone(a) {\n var out = new glMatrix.ARRAY_TYPE(4);\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n return out;\n}\n/**\n * Creates a new vec4 initialized with the given values\n *\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @param {Number} w W component\n * @returns {vec4} a new 4D vector\n */\n\n\nfunction fromValues(x, y, z, w) {\n var out = new glMatrix.ARRAY_TYPE(4);\n out[0] = x;\n out[1] = y;\n out[2] = z;\n out[3] = w;\n return out;\n}\n/**\n * Copy the values from one vec4 to another\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the source vector\n * @returns {vec4} out\n */\n\n\nfunction copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n return out;\n}\n/**\n * Set the components of a vec4 to the given values\n *\n * @param {vec4} out the receiving vector\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @param {Number} w W component\n * @returns {vec4} out\n */\n\n\nfunction set(out, x, y, z, w) {\n out[0] = x;\n out[1] = y;\n out[2] = z;\n out[3] = w;\n return out;\n}\n/**\n * Adds two vec4's\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {vec4} out\n */\n\n\nfunction add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n return out;\n}\n/**\n * Subtracts vector b from vector a\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {vec4} out\n */\n\n\nfunction subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n out[2] = a[2] - b[2];\n out[3] = a[3] - b[3];\n return out;\n}\n/**\n * Multiplies two vec4's\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {vec4} out\n */\n\n\nfunction multiply(out, a, b) {\n out[0] = a[0] * b[0];\n out[1] = a[1] * b[1];\n out[2] = a[2] * b[2];\n out[3] = a[3] * b[3];\n return out;\n}\n/**\n * Divides two vec4's\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {vec4} out\n */\n\n\nfunction divide(out, a, b) {\n out[0] = a[0] / b[0];\n out[1] = a[1] / b[1];\n out[2] = a[2] / b[2];\n out[3] = a[3] / b[3];\n return out;\n}\n/**\n * Math.ceil the components of a vec4\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a vector to ceil\n * @returns {vec4} out\n */\n\n\nfunction ceil(out, a) {\n out[0] = Math.ceil(a[0]);\n out[1] = Math.ceil(a[1]);\n out[2] = Math.ceil(a[2]);\n out[3] = Math.ceil(a[3]);\n return out;\n}\n/**\n * Math.floor the components of a vec4\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a vector to floor\n * @returns {vec4} out\n */\n\n\nfunction floor(out, a) {\n out[0] = Math.floor(a[0]);\n out[1] = Math.floor(a[1]);\n out[2] = Math.floor(a[2]);\n out[3] = Math.floor(a[3]);\n return out;\n}\n/**\n * Returns the minimum of two vec4's\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {vec4} out\n */\n\n\nfunction min(out, a, b) {\n out[0] = Math.min(a[0], b[0]);\n out[1] = Math.min(a[1], b[1]);\n out[2] = Math.min(a[2], b[2]);\n out[3] = Math.min(a[3], b[3]);\n return out;\n}\n/**\n * Returns the maximum of two vec4's\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {vec4} out\n */\n\n\nfunction max(out, a, b) {\n out[0] = Math.max(a[0], b[0]);\n out[1] = Math.max(a[1], b[1]);\n out[2] = Math.max(a[2], b[2]);\n out[3] = Math.max(a[3], b[3]);\n return out;\n}\n/**\n * Math.round the components of a vec4\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a vector to round\n * @returns {vec4} out\n */\n\n\nfunction round(out, a) {\n out[0] = Math.round(a[0]);\n out[1] = Math.round(a[1]);\n out[2] = Math.round(a[2]);\n out[3] = Math.round(a[3]);\n return out;\n}\n/**\n * Scales a vec4 by a scalar number\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the vector to scale\n * @param {Number} b amount to scale the vector by\n * @returns {vec4} out\n */\n\n\nfunction scale(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n return out;\n}\n/**\n * Adds two vec4's after scaling the second operand by a scalar value\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @param {Number} scale the amount to scale b by before adding\n * @returns {vec4} out\n */\n\n\nfunction scaleAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n out[2] = a[2] + b[2] * scale;\n out[3] = a[3] + b[3] * scale;\n return out;\n}\n/**\n * Calculates the euclidian distance between two vec4's\n *\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {Number} distance between a and b\n */\n\n\nfunction distance(a, b) {\n var x = b[0] - a[0];\n var y = b[1] - a[1];\n var z = b[2] - a[2];\n var w = b[3] - a[3];\n return Math.hypot(x, y, z, w);\n}\n/**\n * Calculates the squared euclidian distance between two vec4's\n *\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {Number} squared distance between a and b\n */\n\n\nfunction squaredDistance(a, b) {\n var x = b[0] - a[0];\n var y = b[1] - a[1];\n var z = b[2] - a[2];\n var w = b[3] - a[3];\n return x * x + y * y + z * z + w * w;\n}\n/**\n * Calculates the length of a vec4\n *\n * @param {ReadonlyVec4} a vector to calculate length of\n * @returns {Number} length of a\n */\n\n\nfunction length(a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n var w = a[3];\n return Math.hypot(x, y, z, w);\n}\n/**\n * Calculates the squared length of a vec4\n *\n * @param {ReadonlyVec4} a vector to calculate squared length of\n * @returns {Number} squared length of a\n */\n\n\nfunction squaredLength(a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n var w = a[3];\n return x * x + y * y + z * z + w * w;\n}\n/**\n * Negates the components of a vec4\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a vector to negate\n * @returns {vec4} out\n */\n\n\nfunction negate(out, a) {\n out[0] = -a[0];\n out[1] = -a[1];\n out[2] = -a[2];\n out[3] = -a[3];\n return out;\n}\n/**\n * Returns the inverse of the components of a vec4\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a vector to invert\n * @returns {vec4} out\n */\n\n\nfunction inverse(out, a) {\n out[0] = 1.0 / a[0];\n out[1] = 1.0 / a[1];\n out[2] = 1.0 / a[2];\n out[3] = 1.0 / a[3];\n return out;\n}\n/**\n * Normalize a vec4\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a vector to normalize\n * @returns {vec4} out\n */\n\n\nfunction normalize(out, a) {\n var x = a[0];\n var y = a[1];\n var z = a[2];\n var w = a[3];\n var len = x * x + y * y + z * z + w * w;\n\n if (len > 0) {\n len = 1 / Math.sqrt(len);\n }\n\n out[0] = x * len;\n out[1] = y * len;\n out[2] = z * len;\n out[3] = w * len;\n return out;\n}\n/**\n * Calculates the dot product of two vec4's\n *\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @returns {Number} dot product of a and b\n */\n\n\nfunction dot(a, b) {\n return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];\n}\n/**\n * Returns the cross-product of three vectors in a 4-dimensional space\n *\n * @param {ReadonlyVec4} result the receiving vector\n * @param {ReadonlyVec4} U the first vector\n * @param {ReadonlyVec4} V the second vector\n * @param {ReadonlyVec4} W the third vector\n * @returns {vec4} result\n */\n\n\nfunction cross(out, u, v, w) {\n var A = v[0] * w[1] - v[1] * w[0],\n B = v[0] * w[2] - v[2] * w[0],\n C = v[0] * w[3] - v[3] * w[0],\n D = v[1] * w[2] - v[2] * w[1],\n E = v[1] * w[3] - v[3] * w[1],\n F = v[2] * w[3] - v[3] * w[2];\n var G = u[0];\n var H = u[1];\n var I = u[2];\n var J = u[3];\n out[0] = H * F - I * E + J * D;\n out[1] = -(G * F) + I * C - J * B;\n out[2] = G * E - H * C + J * A;\n out[3] = -(G * D) + H * B - I * A;\n return out;\n}\n/**\n * Performs a linear interpolation between two vec4's\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the first operand\n * @param {ReadonlyVec4} b the second operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {vec4} out\n */\n\n\nfunction lerp(out, a, b, t) {\n var ax = a[0];\n var ay = a[1];\n var az = a[2];\n var aw = a[3];\n out[0] = ax + t * (b[0] - ax);\n out[1] = ay + t * (b[1] - ay);\n out[2] = az + t * (b[2] - az);\n out[3] = aw + t * (b[3] - aw);\n return out;\n}\n/**\n * Generates a random vector with the given scale\n *\n * @param {vec4} out the receiving vector\n * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned\n * @returns {vec4} out\n */\n\n\nfunction random(out, scale) {\n scale = scale || 1.0; // Marsaglia, George. Choosing a Point from the Surface of a\n // Sphere. Ann. Math. Statist. 43 (1972), no. 2, 645--646.\n // http://projecteuclid.org/euclid.aoms/1177692644;\n\n var v1, v2, v3, v4;\n var s1, s2;\n\n do {\n v1 = glMatrix.RANDOM() * 2 - 1;\n v2 = glMatrix.RANDOM() * 2 - 1;\n s1 = v1 * v1 + v2 * v2;\n } while (s1 >= 1);\n\n do {\n v3 = glMatrix.RANDOM() * 2 - 1;\n v4 = glMatrix.RANDOM() * 2 - 1;\n s2 = v3 * v3 + v4 * v4;\n } while (s2 >= 1);\n\n var d = Math.sqrt((1 - s1) / s2);\n out[0] = scale * v1;\n out[1] = scale * v2;\n out[2] = scale * v3 * d;\n out[3] = scale * v4 * d;\n return out;\n}\n/**\n * Transforms the vec4 with a mat4.\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the vector to transform\n * @param {ReadonlyMat4} m matrix to transform with\n * @returns {vec4} out\n */\n\n\nfunction transformMat4(out, a, m) {\n var x = a[0],\n y = a[1],\n z = a[2],\n w = a[3];\n out[0] = m[0] * x + m[4] * y + m[8] * z + m[12] * w;\n out[1] = m[1] * x + m[5] * y + m[9] * z + m[13] * w;\n out[2] = m[2] * x + m[6] * y + m[10] * z + m[14] * w;\n out[3] = m[3] * x + m[7] * y + m[11] * z + m[15] * w;\n return out;\n}\n/**\n * Transforms the vec4 with a quat\n *\n * @param {vec4} out the receiving vector\n * @param {ReadonlyVec4} a the vector to transform\n * @param {ReadonlyQuat} q quaternion to transform with\n * @returns {vec4} out\n */\n\n\nfunction transformQuat(out, a, q) {\n var x = a[0],\n y = a[1],\n z = a[2];\n var qx = q[0],\n qy = q[1],\n qz = q[2],\n qw = q[3]; // calculate quat * vec\n\n var ix = qw * x + qy * z - qz * y;\n var iy = qw * y + qz * x - qx * z;\n var iz = qw * z + qx * y - qy * x;\n var iw = -qx * x - qy * y - qz * z; // calculate result * inverse quat\n\n out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy;\n out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz;\n out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx;\n out[3] = a[3];\n return out;\n}\n/**\n * Set the components of a vec4 to zero\n *\n * @param {vec4} out the receiving vector\n * @returns {vec4} out\n */\n\n\nfunction zero(out) {\n out[0] = 0.0;\n out[1] = 0.0;\n out[2] = 0.0;\n out[3] = 0.0;\n return out;\n}\n/**\n * Returns a string representation of a vector\n *\n * @param {ReadonlyVec4} a vector to represent as a string\n * @returns {String} string representation of the vector\n */\n\n\nfunction str(a) {\n return \"vec4(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \")\";\n}\n/**\n * Returns whether or not the vectors have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyVec4} a The first vector.\n * @param {ReadonlyVec4} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\n\nfunction exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3];\n}\n/**\n * Returns whether or not the vectors have approximately the same elements in the same position.\n *\n * @param {ReadonlyVec4} a The first vector.\n * @param {ReadonlyVec4} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\n\nfunction equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3));\n}\n/**\n * Alias for {@link vec4.subtract}\n * @function\n */\n\n\nvar sub = subtract;\n/**\n * Alias for {@link vec4.multiply}\n * @function\n */\n\nexports.sub = sub;\nvar mul = multiply;\n/**\n * Alias for {@link vec4.divide}\n * @function\n */\n\nexports.mul = mul;\nvar div = divide;\n/**\n * Alias for {@link vec4.distance}\n * @function\n */\n\nexports.div = div;\nvar dist = distance;\n/**\n * Alias for {@link vec4.squaredDistance}\n * @function\n */\n\nexports.dist = dist;\nvar sqrDist = squaredDistance;\n/**\n * Alias for {@link vec4.length}\n * @function\n */\n\nexports.sqrDist = sqrDist;\nvar len = length;\n/**\n * Alias for {@link vec4.squaredLength}\n * @function\n */\n\nexports.len = len;\nvar sqrLen = squaredLength;\n/**\n * Perform some operation over an array of vec4s.\n *\n * @param {Array} a the array of vectors to iterate over\n * @param {Number} stride Number of elements between the start of each vec4. If 0 assumes tightly packed\n * @param {Number} offset Number of elements to skip at the beginning of the array\n * @param {Number} count Number of vec4s to iterate over. If 0 iterates over entire array\n * @param {Function} fn Function to call for each vector in the array\n * @param {Object} [arg] additional argument to pass to fn\n * @returns {Array} a\n * @function\n */\n\nexports.sqrLen = sqrLen;\n\nvar forEach = function () {\n var vec = create();\n return function (a, stride, offset, count, fn, arg) {\n var i, l;\n\n if (!stride) {\n stride = 4;\n }\n\n if (!offset) {\n offset = 0;\n }\n\n if (count) {\n l = Math.min(count * stride + offset, a.length);\n } else {\n l = a.length;\n }\n\n for (i = offset; i < l; i += stride) {\n vec[0] = a[i];\n vec[1] = a[i + 1];\n vec[2] = a[i + 2];\n vec[3] = a[i + 3];\n fn(vec, vec, arg);\n a[i] = vec[0];\n a[i + 1] = vec[1];\n a[i + 2] = vec[2];\n a[i + 3] = vec[3];\n }\n\n return a;\n };\n}();\n\nexports.forEach = forEach;", "\"use strict\";\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.create = create;\nexports.identity = identity;\nexports.setAxisAngle = setAxisAngle;\nexports.getAxisAngle = getAxisAngle;\nexports.getAngle = getAngle;\nexports.multiply = multiply;\nexports.rotateX = rotateX;\nexports.rotateY = rotateY;\nexports.rotateZ = rotateZ;\nexports.calculateW = calculateW;\nexports.exp = exp;\nexports.ln = ln;\nexports.pow = pow;\nexports.slerp = slerp;\nexports.random = random;\nexports.invert = invert;\nexports.conjugate = conjugate;\nexports.fromMat3 = fromMat3;\nexports.fromEuler = fromEuler;\nexports.str = str;\nexports.setAxes = exports.sqlerp = exports.rotationTo = exports.equals = exports.exactEquals = exports.normalize = exports.sqrLen = exports.squaredLength = exports.len = exports.length = exports.lerp = exports.dot = exports.scale = exports.mul = exports.add = exports.set = exports.copy = exports.fromValues = exports.clone = void 0;\n\nvar glMatrix = _interopRequireWildcard(require(\"./common.js\"));\n\nvar mat3 = _interopRequireWildcard(require(\"./mat3.js\"));\n\nvar vec3 = _interopRequireWildcard(require(\"./vec3.js\"));\n\nvar vec4 = _interopRequireWildcard(require(\"./vec4.js\"));\n\nfunction _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== \"function\") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }\n\nfunction _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== \"object\" && typeof obj !== \"function\") { return { \"default\": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== \"default\" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj[\"default\"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }\n\n/**\n * Quaternion\n * @module quat\n */\n\n/**\n * Creates a new identity quat\n *\n * @returns {quat} a new quaternion\n */\nfunction create() {\n var out = new glMatrix.ARRAY_TYPE(4);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n }\n\n out[3] = 1;\n return out;\n}\n/**\n * Set a quat to the identity quaternion\n *\n * @param {quat} out the receiving quaternion\n * @returns {quat} out\n */\n\n\nfunction identity(out) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n out[3] = 1;\n return out;\n}\n/**\n * Sets a quat from the given angle and rotation axis,\n * then returns it.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyVec3} axis the axis around which to rotate\n * @param {Number} rad the angle in radians\n * @returns {quat} out\n **/\n\n\nfunction setAxisAngle(out, axis, rad) {\n rad = rad * 0.5;\n var s = Math.sin(rad);\n out[0] = s * axis[0];\n out[1] = s * axis[1];\n out[2] = s * axis[2];\n out[3] = Math.cos(rad);\n return out;\n}\n/**\n * Gets the rotation axis and angle for a given\n * quaternion. If a quaternion is created with\n * setAxisAngle, this method will return the same\n * values as providied in the original parameter list\n * OR functionally equivalent values.\n * Example: The quaternion formed by axis [0, 0, 1] and\n * angle -90 is the same as the quaternion formed by\n * [0, 0, 1] and 270. This method favors the latter.\n * @param {vec3} out_axis Vector receiving the axis of rotation\n * @param {ReadonlyQuat} q Quaternion to be decomposed\n * @return {Number} Angle, in radians, of the rotation\n */\n\n\nfunction getAxisAngle(out_axis, q) {\n var rad = Math.acos(q[3]) * 2.0;\n var s = Math.sin(rad / 2.0);\n\n if (s > glMatrix.EPSILON) {\n out_axis[0] = q[0] / s;\n out_axis[1] = q[1] / s;\n out_axis[2] = q[2] / s;\n } else {\n // If s is zero, return any axis (no rotation - axis does not matter)\n out_axis[0] = 1;\n out_axis[1] = 0;\n out_axis[2] = 0;\n }\n\n return rad;\n}\n/**\n * Gets the angular distance between two unit quaternions\n *\n * @param {ReadonlyQuat} a Origin unit quaternion\n * @param {ReadonlyQuat} b Destination unit quaternion\n * @return {Number} Angle, in radians, between the two quaternions\n */\n\n\nfunction getAngle(a, b) {\n var dotproduct = dot(a, b);\n return Math.acos(2 * dotproduct * dotproduct - 1);\n}\n/**\n * Multiplies two quat's\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a the first operand\n * @param {ReadonlyQuat} b the second operand\n * @returns {quat} out\n */\n\n\nfunction multiply(out, a, b) {\n var ax = a[0],\n ay = a[1],\n az = a[2],\n aw = a[3];\n var bx = b[0],\n by = b[1],\n bz = b[2],\n bw = b[3];\n out[0] = ax * bw + aw * bx + ay * bz - az * by;\n out[1] = ay * bw + aw * by + az * bx - ax * bz;\n out[2] = az * bw + aw * bz + ax * by - ay * bx;\n out[3] = aw * bw - ax * bx - ay * by - az * bz;\n return out;\n}\n/**\n * Rotates a quaternion by the given angle about the X axis\n *\n * @param {quat} out quat receiving operation result\n * @param {ReadonlyQuat} a quat to rotate\n * @param {number} rad angle (in radians) to rotate\n * @returns {quat} out\n */\n\n\nfunction rotateX(out, a, rad) {\n rad *= 0.5;\n var ax = a[0],\n ay = a[1],\n az = a[2],\n aw = a[3];\n var bx = Math.sin(rad),\n bw = Math.cos(rad);\n out[0] = ax * bw + aw * bx;\n out[1] = ay * bw + az * bx;\n out[2] = az * bw - ay * bx;\n out[3] = aw * bw - ax * bx;\n return out;\n}\n/**\n * Rotates a quaternion by the given angle about the Y axis\n *\n * @param {quat} out quat receiving operation result\n * @param {ReadonlyQuat} a quat to rotate\n * @param {number} rad angle (in radians) to rotate\n * @returns {quat} out\n */\n\n\nfunction rotateY(out, a, rad) {\n rad *= 0.5;\n var ax = a[0],\n ay = a[1],\n az = a[2],\n aw = a[3];\n var by = Math.sin(rad),\n bw = Math.cos(rad);\n out[0] = ax * bw - az * by;\n out[1] = ay * bw + aw * by;\n out[2] = az * bw + ax * by;\n out[3] = aw * bw - ay * by;\n return out;\n}\n/**\n * Rotates a quaternion by the given angle about the Z axis\n *\n * @param {quat} out quat receiving operation result\n * @param {ReadonlyQuat} a quat to rotate\n * @param {number} rad angle (in radians) to rotate\n * @returns {quat} out\n */\n\n\nfunction rotateZ(out, a, rad) {\n rad *= 0.5;\n var ax = a[0],\n ay = a[1],\n az = a[2],\n aw = a[3];\n var bz = Math.sin(rad),\n bw = Math.cos(rad);\n out[0] = ax * bw + ay * bz;\n out[1] = ay * bw - ax * bz;\n out[2] = az * bw + aw * bz;\n out[3] = aw * bw - az * bz;\n return out;\n}\n/**\n * Calculates the W component of a quat from the X, Y, and Z components.\n * Assumes that quaternion is 1 unit in length.\n * Any existing W component will be ignored.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quat to calculate W component of\n * @returns {quat} out\n */\n\n\nfunction calculateW(out, a) {\n var x = a[0],\n y = a[1],\n z = a[2];\n out[0] = x;\n out[1] = y;\n out[2] = z;\n out[3] = Math.sqrt(Math.abs(1.0 - x * x - y * y - z * z));\n return out;\n}\n/**\n * Calculate the exponential of a unit quaternion.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quat to calculate the exponential of\n * @returns {quat} out\n */\n\n\nfunction exp(out, a) {\n var x = a[0],\n y = a[1],\n z = a[2],\n w = a[3];\n var r = Math.sqrt(x * x + y * y + z * z);\n var et = Math.exp(w);\n var s = r > 0 ? et * Math.sin(r) / r : 0;\n out[0] = x * s;\n out[1] = y * s;\n out[2] = z * s;\n out[3] = et * Math.cos(r);\n return out;\n}\n/**\n * Calculate the natural logarithm of a unit quaternion.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quat to calculate the exponential of\n * @returns {quat} out\n */\n\n\nfunction ln(out, a) {\n var x = a[0],\n y = a[1],\n z = a[2],\n w = a[3];\n var r = Math.sqrt(x * x + y * y + z * z);\n var t = r > 0 ? Math.atan2(r, w) / r : 0;\n out[0] = x * t;\n out[1] = y * t;\n out[2] = z * t;\n out[3] = 0.5 * Math.log(x * x + y * y + z * z + w * w);\n return out;\n}\n/**\n * Calculate the scalar power of a unit quaternion.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quat to calculate the exponential of\n * @param {Number} b amount to scale the quaternion by\n * @returns {quat} out\n */\n\n\nfunction pow(out, a, b) {\n ln(out, a);\n scale(out, out, b);\n exp(out, out);\n return out;\n}\n/**\n * Performs a spherical linear interpolation between two quat\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a the first operand\n * @param {ReadonlyQuat} b the second operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {quat} out\n */\n\n\nfunction slerp(out, a, b, t) {\n // benchmarks:\n // http://jsperf.com/quaternion-slerp-implementations\n var ax = a[0],\n ay = a[1],\n az = a[2],\n aw = a[3];\n var bx = b[0],\n by = b[1],\n bz = b[2],\n bw = b[3];\n var omega, cosom, sinom, scale0, scale1; // calc cosine\n\n cosom = ax * bx + ay * by + az * bz + aw * bw; // adjust signs (if necessary)\n\n if (cosom < 0.0) {\n cosom = -cosom;\n bx = -bx;\n by = -by;\n bz = -bz;\n bw = -bw;\n } // calculate coefficients\n\n\n if (1.0 - cosom > glMatrix.EPSILON) {\n // standard case (slerp)\n omega = Math.acos(cosom);\n sinom = Math.sin(omega);\n scale0 = Math.sin((1.0 - t) * omega) / sinom;\n scale1 = Math.sin(t * omega) / sinom;\n } else {\n // \"from\" and \"to\" quaternions are very close\n // ... so we can do a linear interpolation\n scale0 = 1.0 - t;\n scale1 = t;\n } // calculate final values\n\n\n out[0] = scale0 * ax + scale1 * bx;\n out[1] = scale0 * ay + scale1 * by;\n out[2] = scale0 * az + scale1 * bz;\n out[3] = scale0 * aw + scale1 * bw;\n return out;\n}\n/**\n * Generates a random unit quaternion\n *\n * @param {quat} out the receiving quaternion\n * @returns {quat} out\n */\n\n\nfunction random(out) {\n // Implementation of http://planning.cs.uiuc.edu/node198.html\n // TODO: Calling random 3 times is probably not the fastest solution\n var u1 = glMatrix.RANDOM();\n var u2 = glMatrix.RANDOM();\n var u3 = glMatrix.RANDOM();\n var sqrt1MinusU1 = Math.sqrt(1 - u1);\n var sqrtU1 = Math.sqrt(u1);\n out[0] = sqrt1MinusU1 * Math.sin(2.0 * Math.PI * u2);\n out[1] = sqrt1MinusU1 * Math.cos(2.0 * Math.PI * u2);\n out[2] = sqrtU1 * Math.sin(2.0 * Math.PI * u3);\n out[3] = sqrtU1 * Math.cos(2.0 * Math.PI * u3);\n return out;\n}\n/**\n * Calculates the inverse of a quat\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quat to calculate inverse of\n * @returns {quat} out\n */\n\n\nfunction invert(out, a) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3];\n var dot = a0 * a0 + a1 * a1 + a2 * a2 + a3 * a3;\n var invDot = dot ? 1.0 / dot : 0; // TODO: Would be faster to return [0,0,0,0] immediately if dot == 0\n\n out[0] = -a0 * invDot;\n out[1] = -a1 * invDot;\n out[2] = -a2 * invDot;\n out[3] = a3 * invDot;\n return out;\n}\n/**\n * Calculates the conjugate of a quat\n * If the quaternion is normalized, this function is faster than quat.inverse and produces the same result.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quat to calculate conjugate of\n * @returns {quat} out\n */\n\n\nfunction conjugate(out, a) {\n out[0] = -a[0];\n out[1] = -a[1];\n out[2] = -a[2];\n out[3] = a[3];\n return out;\n}\n/**\n * Creates a quaternion from the given 3x3 rotation matrix.\n *\n * NOTE: The resultant quaternion is not normalized, so you should be sure\n * to renormalize the quaternion yourself where necessary.\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyMat3} m rotation matrix\n * @returns {quat} out\n * @function\n */\n\n\nfunction fromMat3(out, m) {\n // Algorithm in Ken Shoemake's article in 1987 SIGGRAPH course notes\n // article \"Quaternion Calculus and Fast Animation\".\n var fTrace = m[0] + m[4] + m[8];\n var fRoot;\n\n if (fTrace > 0.0) {\n // |w| > 1/2, may as well choose w > 1/2\n fRoot = Math.sqrt(fTrace + 1.0); // 2w\n\n out[3] = 0.5 * fRoot;\n fRoot = 0.5 / fRoot; // 1/(4w)\n\n out[0] = (m[5] - m[7]) * fRoot;\n out[1] = (m[6] - m[2]) * fRoot;\n out[2] = (m[1] - m[3]) * fRoot;\n } else {\n // |w| <= 1/2\n var i = 0;\n if (m[4] > m[0]) i = 1;\n if (m[8] > m[i * 3 + i]) i = 2;\n var j = (i + 1) % 3;\n var k = (i + 2) % 3;\n fRoot = Math.sqrt(m[i * 3 + i] - m[j * 3 + j] - m[k * 3 + k] + 1.0);\n out[i] = 0.5 * fRoot;\n fRoot = 0.5 / fRoot;\n out[3] = (m[j * 3 + k] - m[k * 3 + j]) * fRoot;\n out[j] = (m[j * 3 + i] + m[i * 3 + j]) * fRoot;\n out[k] = (m[k * 3 + i] + m[i * 3 + k]) * fRoot;\n }\n\n return out;\n}\n/**\n * Creates a quaternion from the given euler angle x, y, z.\n *\n * @param {quat} out the receiving quaternion\n * @param {x} Angle to rotate around X axis in degrees.\n * @param {y} Angle to rotate around Y axis in degrees.\n * @param {z} Angle to rotate around Z axis in degrees.\n * @returns {quat} out\n * @function\n */\n\n\nfunction fromEuler(out, x, y, z) {\n var halfToRad = 0.5 * Math.PI / 180.0;\n x *= halfToRad;\n y *= halfToRad;\n z *= halfToRad;\n var sx = Math.sin(x);\n var cx = Math.cos(x);\n var sy = Math.sin(y);\n var cy = Math.cos(y);\n var sz = Math.sin(z);\n var cz = Math.cos(z);\n out[0] = sx * cy * cz - cx * sy * sz;\n out[1] = cx * sy * cz + sx * cy * sz;\n out[2] = cx * cy * sz - sx * sy * cz;\n out[3] = cx * cy * cz + sx * sy * sz;\n return out;\n}\n/**\n * Returns a string representation of a quatenion\n *\n * @param {ReadonlyQuat} a vector to represent as a string\n * @returns {String} string representation of the vector\n */\n\n\nfunction str(a) {\n return \"quat(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \")\";\n}\n/**\n * Creates a new quat initialized with values from an existing quaternion\n *\n * @param {ReadonlyQuat} a quaternion to clone\n * @returns {quat} a new quaternion\n * @function\n */\n\n\nvar clone = vec4.clone;\n/**\n * Creates a new quat initialized with the given values\n *\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @param {Number} w W component\n * @returns {quat} a new quaternion\n * @function\n */\n\nexports.clone = clone;\nvar fromValues = vec4.fromValues;\n/**\n * Copy the values from one quat to another\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a the source quaternion\n * @returns {quat} out\n * @function\n */\n\nexports.fromValues = fromValues;\nvar copy = vec4.copy;\n/**\n * Set the components of a quat to the given values\n *\n * @param {quat} out the receiving quaternion\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @param {Number} w W component\n * @returns {quat} out\n * @function\n */\n\nexports.copy = copy;\nvar set = vec4.set;\n/**\n * Adds two quat's\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a the first operand\n * @param {ReadonlyQuat} b the second operand\n * @returns {quat} out\n * @function\n */\n\nexports.set = set;\nvar add = vec4.add;\n/**\n * Alias for {@link quat.multiply}\n * @function\n */\n\nexports.add = add;\nvar mul = multiply;\n/**\n * Scales a quat by a scalar number\n *\n * @param {quat} out the receiving vector\n * @param {ReadonlyQuat} a the vector to scale\n * @param {Number} b amount to scale the vector by\n * @returns {quat} out\n * @function\n */\n\nexports.mul = mul;\nvar scale = vec4.scale;\n/**\n * Calculates the dot product of two quat's\n *\n * @param {ReadonlyQuat} a the first operand\n * @param {ReadonlyQuat} b the second operand\n * @returns {Number} dot product of a and b\n * @function\n */\n\nexports.scale = scale;\nvar dot = vec4.dot;\n/**\n * Performs a linear interpolation between two quat's\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a the first operand\n * @param {ReadonlyQuat} b the second operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {quat} out\n * @function\n */\n\nexports.dot = dot;\nvar lerp = vec4.lerp;\n/**\n * Calculates the length of a quat\n *\n * @param {ReadonlyQuat} a vector to calculate length of\n * @returns {Number} length of a\n */\n\nexports.lerp = lerp;\nvar length = vec4.length;\n/**\n * Alias for {@link quat.length}\n * @function\n */\n\nexports.length = length;\nvar len = length;\n/**\n * Calculates the squared length of a quat\n *\n * @param {ReadonlyQuat} a vector to calculate squared length of\n * @returns {Number} squared length of a\n * @function\n */\n\nexports.len = len;\nvar squaredLength = vec4.squaredLength;\n/**\n * Alias for {@link quat.squaredLength}\n * @function\n */\n\nexports.squaredLength = squaredLength;\nvar sqrLen = squaredLength;\n/**\n * Normalize a quat\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a quaternion to normalize\n * @returns {quat} out\n * @function\n */\n\nexports.sqrLen = sqrLen;\nvar normalize = vec4.normalize;\n/**\n * Returns whether or not the quaternions have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyQuat} a The first quaternion.\n * @param {ReadonlyQuat} b The second quaternion.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\nexports.normalize = normalize;\nvar exactEquals = vec4.exactEquals;\n/**\n * Returns whether or not the quaternions have approximately the same elements in the same position.\n *\n * @param {ReadonlyQuat} a The first vector.\n * @param {ReadonlyQuat} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\nexports.exactEquals = exactEquals;\nvar equals = vec4.equals;\n/**\n * Sets a quaternion to represent the shortest rotation from one\n * vector to another.\n *\n * Both vectors are assumed to be unit length.\n *\n * @param {quat} out the receiving quaternion.\n * @param {ReadonlyVec3} a the initial vector\n * @param {ReadonlyVec3} b the destination vector\n * @returns {quat} out\n */\n\nexports.equals = equals;\n\nvar rotationTo = function () {\n var tmpvec3 = vec3.create();\n var xUnitVec3 = vec3.fromValues(1, 0, 0);\n var yUnitVec3 = vec3.fromValues(0, 1, 0);\n return function (out, a, b) {\n var dot = vec3.dot(a, b);\n\n if (dot < -0.999999) {\n vec3.cross(tmpvec3, xUnitVec3, a);\n if (vec3.len(tmpvec3) < 0.000001) vec3.cross(tmpvec3, yUnitVec3, a);\n vec3.normalize(tmpvec3, tmpvec3);\n setAxisAngle(out, tmpvec3, Math.PI);\n return out;\n } else if (dot > 0.999999) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n out[3] = 1;\n return out;\n } else {\n vec3.cross(tmpvec3, a, b);\n out[0] = tmpvec3[0];\n out[1] = tmpvec3[1];\n out[2] = tmpvec3[2];\n out[3] = 1 + dot;\n return normalize(out, out);\n }\n };\n}();\n/**\n * Performs a spherical linear interpolation with two control points\n *\n * @param {quat} out the receiving quaternion\n * @param {ReadonlyQuat} a the first operand\n * @param {ReadonlyQuat} b the second operand\n * @param {ReadonlyQuat} c the third operand\n * @param {ReadonlyQuat} d the fourth operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {quat} out\n */\n\n\nexports.rotationTo = rotationTo;\n\nvar sqlerp = function () {\n var temp1 = create();\n var temp2 = create();\n return function (out, a, b, c, d, t) {\n slerp(temp1, a, d, t);\n slerp(temp2, b, c, t);\n slerp(out, temp1, temp2, 2 * t * (1 - t));\n return out;\n };\n}();\n/**\n * Sets the specified quaternion with values corresponding to the given\n * axes. Each axis is a vec3 and is expected to be unit length and\n * perpendicular to all other specified axes.\n *\n * @param {ReadonlyVec3} view the vector representing the viewing direction\n * @param {ReadonlyVec3} right the vector representing the local \"right\" direction\n * @param {ReadonlyVec3} up the vector representing the local \"up\" direction\n * @returns {quat} out\n */\n\n\nexports.sqlerp = sqlerp;\n\nvar setAxes = function () {\n var matr = mat3.create();\n return function (out, view, right, up) {\n matr[0] = right[0];\n matr[3] = right[1];\n matr[6] = right[2];\n matr[1] = up[0];\n matr[4] = up[1];\n matr[7] = up[2];\n matr[2] = -view[0];\n matr[5] = -view[1];\n matr[8] = -view[2];\n return normalize(out, fromMat3(out, matr));\n };\n}();\n\nexports.setAxes = setAxes;", "\"use strict\";\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.create = create;\nexports.clone = clone;\nexports.fromValues = fromValues;\nexports.fromRotationTranslationValues = fromRotationTranslationValues;\nexports.fromRotationTranslation = fromRotationTranslation;\nexports.fromTranslation = fromTranslation;\nexports.fromRotation = fromRotation;\nexports.fromMat4 = fromMat4;\nexports.copy = copy;\nexports.identity = identity;\nexports.set = set;\nexports.getDual = getDual;\nexports.setDual = setDual;\nexports.getTranslation = getTranslation;\nexports.translate = translate;\nexports.rotateX = rotateX;\nexports.rotateY = rotateY;\nexports.rotateZ = rotateZ;\nexports.rotateByQuatAppend = rotateByQuatAppend;\nexports.rotateByQuatPrepend = rotateByQuatPrepend;\nexports.rotateAroundAxis = rotateAroundAxis;\nexports.add = add;\nexports.multiply = multiply;\nexports.scale = scale;\nexports.lerp = lerp;\nexports.invert = invert;\nexports.conjugate = conjugate;\nexports.normalize = normalize;\nexports.str = str;\nexports.exactEquals = exactEquals;\nexports.equals = equals;\nexports.sqrLen = exports.squaredLength = exports.len = exports.length = exports.dot = exports.mul = exports.setReal = exports.getReal = void 0;\n\nvar glMatrix = _interopRequireWildcard(require(\"./common.js\"));\n\nvar quat = _interopRequireWildcard(require(\"./quat.js\"));\n\nvar mat4 = _interopRequireWildcard(require(\"./mat4.js\"));\n\nfunction _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== \"function\") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }\n\nfunction _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== \"object\" && typeof obj !== \"function\") { return { \"default\": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== \"default\" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj[\"default\"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }\n\n/**\n * Dual Quaternion
\n * Format: [real, dual]
\n * Quaternion format: XYZW
\n * Make sure to have normalized dual quaternions, otherwise the functions may not work as intended.
\n * @module quat2\n */\n\n/**\n * Creates a new identity dual quat\n *\n * @returns {quat2} a new dual quaternion [real -> rotation, dual -> translation]\n */\nfunction create() {\n var dq = new glMatrix.ARRAY_TYPE(8);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n dq[0] = 0;\n dq[1] = 0;\n dq[2] = 0;\n dq[4] = 0;\n dq[5] = 0;\n dq[6] = 0;\n dq[7] = 0;\n }\n\n dq[3] = 1;\n return dq;\n}\n/**\n * Creates a new quat initialized with values from an existing quaternion\n *\n * @param {ReadonlyQuat2} a dual quaternion to clone\n * @returns {quat2} new dual quaternion\n * @function\n */\n\n\nfunction clone(a) {\n var dq = new glMatrix.ARRAY_TYPE(8);\n dq[0] = a[0];\n dq[1] = a[1];\n dq[2] = a[2];\n dq[3] = a[3];\n dq[4] = a[4];\n dq[5] = a[5];\n dq[6] = a[6];\n dq[7] = a[7];\n return dq;\n}\n/**\n * Creates a new dual quat initialized with the given values\n *\n * @param {Number} x1 X component\n * @param {Number} y1 Y component\n * @param {Number} z1 Z component\n * @param {Number} w1 W component\n * @param {Number} x2 X component\n * @param {Number} y2 Y component\n * @param {Number} z2 Z component\n * @param {Number} w2 W component\n * @returns {quat2} new dual quaternion\n * @function\n */\n\n\nfunction fromValues(x1, y1, z1, w1, x2, y2, z2, w2) {\n var dq = new glMatrix.ARRAY_TYPE(8);\n dq[0] = x1;\n dq[1] = y1;\n dq[2] = z1;\n dq[3] = w1;\n dq[4] = x2;\n dq[5] = y2;\n dq[6] = z2;\n dq[7] = w2;\n return dq;\n}\n/**\n * Creates a new dual quat from the given values (quat and translation)\n *\n * @param {Number} x1 X component\n * @param {Number} y1 Y component\n * @param {Number} z1 Z component\n * @param {Number} w1 W component\n * @param {Number} x2 X component (translation)\n * @param {Number} y2 Y component (translation)\n * @param {Number} z2 Z component (translation)\n * @returns {quat2} new dual quaternion\n * @function\n */\n\n\nfunction fromRotationTranslationValues(x1, y1, z1, w1, x2, y2, z2) {\n var dq = new glMatrix.ARRAY_TYPE(8);\n dq[0] = x1;\n dq[1] = y1;\n dq[2] = z1;\n dq[3] = w1;\n var ax = x2 * 0.5,\n ay = y2 * 0.5,\n az = z2 * 0.5;\n dq[4] = ax * w1 + ay * z1 - az * y1;\n dq[5] = ay * w1 + az * x1 - ax * z1;\n dq[6] = az * w1 + ax * y1 - ay * x1;\n dq[7] = -ax * x1 - ay * y1 - az * z1;\n return dq;\n}\n/**\n * Creates a dual quat from a quaternion and a translation\n *\n * @param {ReadonlyQuat2} dual quaternion receiving operation result\n * @param {ReadonlyQuat} q a normalized quaternion\n * @param {ReadonlyVec3} t tranlation vector\n * @returns {quat2} dual quaternion receiving operation result\n * @function\n */\n\n\nfunction fromRotationTranslation(out, q, t) {\n var ax = t[0] * 0.5,\n ay = t[1] * 0.5,\n az = t[2] * 0.5,\n bx = q[0],\n by = q[1],\n bz = q[2],\n bw = q[3];\n out[0] = bx;\n out[1] = by;\n out[2] = bz;\n out[3] = bw;\n out[4] = ax * bw + ay * bz - az * by;\n out[5] = ay * bw + az * bx - ax * bz;\n out[6] = az * bw + ax * by - ay * bx;\n out[7] = -ax * bx - ay * by - az * bz;\n return out;\n}\n/**\n * Creates a dual quat from a translation\n *\n * @param {ReadonlyQuat2} dual quaternion receiving operation result\n * @param {ReadonlyVec3} t translation vector\n * @returns {quat2} dual quaternion receiving operation result\n * @function\n */\n\n\nfunction fromTranslation(out, t) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n out[3] = 1;\n out[4] = t[0] * 0.5;\n out[5] = t[1] * 0.5;\n out[6] = t[2] * 0.5;\n out[7] = 0;\n return out;\n}\n/**\n * Creates a dual quat from a quaternion\n *\n * @param {ReadonlyQuat2} dual quaternion receiving operation result\n * @param {ReadonlyQuat} q the quaternion\n * @returns {quat2} dual quaternion receiving operation result\n * @function\n */\n\n\nfunction fromRotation(out, q) {\n out[0] = q[0];\n out[1] = q[1];\n out[2] = q[2];\n out[3] = q[3];\n out[4] = 0;\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n return out;\n}\n/**\n * Creates a new dual quat from a matrix (4x4)\n *\n * @param {quat2} out the dual quaternion\n * @param {ReadonlyMat4} a the matrix\n * @returns {quat2} dual quat receiving operation result\n * @function\n */\n\n\nfunction fromMat4(out, a) {\n //TODO Optimize this\n var outer = quat.create();\n mat4.getRotation(outer, a);\n var t = new glMatrix.ARRAY_TYPE(3);\n mat4.getTranslation(t, a);\n fromRotationTranslation(out, outer, t);\n return out;\n}\n/**\n * Copy the values from one dual quat to another\n *\n * @param {quat2} out the receiving dual quaternion\n * @param {ReadonlyQuat2} a the source dual quaternion\n * @returns {quat2} out\n * @function\n */\n\n\nfunction copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n out[2] = a[2];\n out[3] = a[3];\n out[4] = a[4];\n out[5] = a[5];\n out[6] = a[6];\n out[7] = a[7];\n return out;\n}\n/**\n * Set a dual quat to the identity dual quaternion\n *\n * @param {quat2} out the receiving quaternion\n * @returns {quat2} out\n */\n\n\nfunction identity(out) {\n out[0] = 0;\n out[1] = 0;\n out[2] = 0;\n out[3] = 1;\n out[4] = 0;\n out[5] = 0;\n out[6] = 0;\n out[7] = 0;\n return out;\n}\n/**\n * Set the components of a dual quat to the given values\n *\n * @param {quat2} out the receiving quaternion\n * @param {Number} x1 X component\n * @param {Number} y1 Y component\n * @param {Number} z1 Z component\n * @param {Number} w1 W component\n * @param {Number} x2 X component\n * @param {Number} y2 Y component\n * @param {Number} z2 Z component\n * @param {Number} w2 W component\n * @returns {quat2} out\n * @function\n */\n\n\nfunction set(out, x1, y1, z1, w1, x2, y2, z2, w2) {\n out[0] = x1;\n out[1] = y1;\n out[2] = z1;\n out[3] = w1;\n out[4] = x2;\n out[5] = y2;\n out[6] = z2;\n out[7] = w2;\n return out;\n}\n/**\n * Gets the real part of a dual quat\n * @param {quat} out real part\n * @param {ReadonlyQuat2} a Dual Quaternion\n * @return {quat} real part\n */\n\n\nvar getReal = quat.copy;\n/**\n * Gets the dual part of a dual quat\n * @param {quat} out dual part\n * @param {ReadonlyQuat2} a Dual Quaternion\n * @return {quat} dual part\n */\n\nexports.getReal = getReal;\n\nfunction getDual(out, a) {\n out[0] = a[4];\n out[1] = a[5];\n out[2] = a[6];\n out[3] = a[7];\n return out;\n}\n/**\n * Set the real component of a dual quat to the given quaternion\n *\n * @param {quat2} out the receiving quaternion\n * @param {ReadonlyQuat} q a quaternion representing the real part\n * @returns {quat2} out\n * @function\n */\n\n\nvar setReal = quat.copy;\n/**\n * Set the dual component of a dual quat to the given quaternion\n *\n * @param {quat2} out the receiving quaternion\n * @param {ReadonlyQuat} q a quaternion representing the dual part\n * @returns {quat2} out\n * @function\n */\n\nexports.setReal = setReal;\n\nfunction setDual(out, q) {\n out[4] = q[0];\n out[5] = q[1];\n out[6] = q[2];\n out[7] = q[3];\n return out;\n}\n/**\n * Gets the translation of a normalized dual quat\n * @param {vec3} out translation\n * @param {ReadonlyQuat2} a Dual Quaternion to be decomposed\n * @return {vec3} translation\n */\n\n\nfunction getTranslation(out, a) {\n var ax = a[4],\n ay = a[5],\n az = a[6],\n aw = a[7],\n bx = -a[0],\n by = -a[1],\n bz = -a[2],\n bw = a[3];\n out[0] = (ax * bw + aw * bx + ay * bz - az * by) * 2;\n out[1] = (ay * bw + aw * by + az * bx - ax * bz) * 2;\n out[2] = (az * bw + aw * bz + ax * by - ay * bx) * 2;\n return out;\n}\n/**\n * Translates a dual quat by the given vector\n *\n * @param {quat2} out the receiving dual quaternion\n * @param {ReadonlyQuat2} a the dual quaternion to translate\n * @param {ReadonlyVec3} v vector to translate by\n * @returns {quat2} out\n */\n\n\nfunction translate(out, a, v) {\n var ax1 = a[0],\n ay1 = a[1],\n az1 = a[2],\n aw1 = a[3],\n bx1 = v[0] * 0.5,\n by1 = v[1] * 0.5,\n bz1 = v[2] * 0.5,\n ax2 = a[4],\n ay2 = a[5],\n az2 = a[6],\n aw2 = a[7];\n out[0] = ax1;\n out[1] = ay1;\n out[2] = az1;\n out[3] = aw1;\n out[4] = aw1 * bx1 + ay1 * bz1 - az1 * by1 + ax2;\n out[5] = aw1 * by1 + az1 * bx1 - ax1 * bz1 + ay2;\n out[6] = aw1 * bz1 + ax1 * by1 - ay1 * bx1 + az2;\n out[7] = -ax1 * bx1 - ay1 * by1 - az1 * bz1 + aw2;\n return out;\n}\n/**\n * Rotates a dual quat around the X axis\n *\n * @param {quat2} out the receiving dual quaternion\n * @param {ReadonlyQuat2} a the dual quaternion to rotate\n * @param {number} rad how far should the rotation be\n * @returns {quat2} out\n */\n\n\nfunction rotateX(out, a, rad) {\n var bx = -a[0],\n by = -a[1],\n bz = -a[2],\n bw = a[3],\n ax = a[4],\n ay = a[5],\n az = a[6],\n aw = a[7],\n ax1 = ax * bw + aw * bx + ay * bz - az * by,\n ay1 = ay * bw + aw * by + az * bx - ax * bz,\n az1 = az * bw + aw * bz + ax * by - ay * bx,\n aw1 = aw * bw - ax * bx - ay * by - az * bz;\n quat.rotateX(out, a, rad);\n bx = out[0];\n by = out[1];\n bz = out[2];\n bw = out[3];\n out[4] = ax1 * bw + aw1 * bx + ay1 * bz - az1 * by;\n out[5] = ay1 * bw + aw1 * by + az1 * bx - ax1 * bz;\n out[6] = az1 * bw + aw1 * bz + ax1 * by - ay1 * bx;\n out[7] = aw1 * bw - ax1 * bx - ay1 * by - az1 * bz;\n return out;\n}\n/**\n * Rotates a dual quat around the Y axis\n *\n * @param {quat2} out the receiving dual quaternion\n * @param {ReadonlyQuat2} a the dual quaternion to rotate\n * @param {number} rad how far should the rotation be\n * @returns {quat2} out\n */\n\n\nfunction rotateY(out, a, rad) {\n var bx = -a[0],\n by = -a[1],\n bz = -a[2],\n bw = a[3],\n ax = a[4],\n ay = a[5],\n az = a[6],\n aw = a[7],\n ax1 = ax * bw + aw * bx + ay * bz - az * by,\n ay1 = ay * bw + aw * by + az * bx - ax * bz,\n az1 = az * bw + aw * bz + ax * by - ay * bx,\n aw1 = aw * bw - ax * bx - ay * by - az * bz;\n quat.rotateY(out, a, rad);\n bx = out[0];\n by = out[1];\n bz = out[2];\n bw = out[3];\n out[4] = ax1 * bw + aw1 * bx + ay1 * bz - az1 * by;\n out[5] = ay1 * bw + aw1 * by + az1 * bx - ax1 * bz;\n out[6] = az1 * bw + aw1 * bz + ax1 * by - ay1 * bx;\n out[7] = aw1 * bw - ax1 * bx - ay1 * by - az1 * bz;\n return out;\n}\n/**\n * Rotates a dual quat around the Z axis\n *\n * @param {quat2} out the receiving dual quaternion\n * @param {ReadonlyQuat2} a the dual quaternion to rotate\n * @param {number} rad how far should the rotation be\n * @returns {quat2} out\n */\n\n\nfunction rotateZ(out, a, rad) {\n var bx = -a[0],\n by = -a[1],\n bz = -a[2],\n bw = a[3],\n ax = a[4],\n ay = a[5],\n az = a[6],\n aw = a[7],\n ax1 = ax * bw + aw * bx + ay * bz - az * by,\n ay1 = ay * bw + aw * by + az * bx - ax * bz,\n az1 = az * bw + aw * bz + ax * by - ay * bx,\n aw1 = aw * bw - ax * bx - ay * by - az * bz;\n quat.rotateZ(out, a, rad);\n bx = out[0];\n by = out[1];\n bz = out[2];\n bw = out[3];\n out[4] = ax1 * bw + aw1 * bx + ay1 * bz - az1 * by;\n out[5] = ay1 * bw + aw1 * by + az1 * bx - ax1 * bz;\n out[6] = az1 * bw + aw1 * bz + ax1 * by - ay1 * bx;\n out[7] = aw1 * bw - ax1 * bx - ay1 * by - az1 * bz;\n return out;\n}\n/**\n * Rotates a dual quat by a given quaternion (a * q)\n *\n * @param {quat2} out the receiving dual quaternion\n * @param {ReadonlyQuat2} a the dual quaternion to rotate\n * @param {ReadonlyQuat} q quaternion to rotate by\n * @returns {quat2} out\n */\n\n\nfunction rotateByQuatAppend(out, a, q) {\n var qx = q[0],\n qy = q[1],\n qz = q[2],\n qw = q[3],\n ax = a[0],\n ay = a[1],\n az = a[2],\n aw = a[3];\n out[0] = ax * qw + aw * qx + ay * qz - az * qy;\n out[1] = ay * qw + aw * qy + az * qx - ax * qz;\n out[2] = az * qw + aw * qz + ax * qy - ay * qx;\n out[3] = aw * qw - ax * qx - ay * qy - az * qz;\n ax = a[4];\n ay = a[5];\n az = a[6];\n aw = a[7];\n out[4] = ax * qw + aw * qx + ay * qz - az * qy;\n out[5] = ay * qw + aw * qy + az * qx - ax * qz;\n out[6] = az * qw + aw * qz + ax * qy - ay * qx;\n out[7] = aw * qw - ax * qx - ay * qy - az * qz;\n return out;\n}\n/**\n * Rotates a dual quat by a given quaternion (q * a)\n *\n * @param {quat2} out the receiving dual quaternion\n * @param {ReadonlyQuat} q quaternion to rotate by\n * @param {ReadonlyQuat2} a the dual quaternion to rotate\n * @returns {quat2} out\n */\n\n\nfunction rotateByQuatPrepend(out, q, a) {\n var qx = q[0],\n qy = q[1],\n qz = q[2],\n qw = q[3],\n bx = a[0],\n by = a[1],\n bz = a[2],\n bw = a[3];\n out[0] = qx * bw + qw * bx + qy * bz - qz * by;\n out[1] = qy * bw + qw * by + qz * bx - qx * bz;\n out[2] = qz * bw + qw * bz + qx * by - qy * bx;\n out[3] = qw * bw - qx * bx - qy * by - qz * bz;\n bx = a[4];\n by = a[5];\n bz = a[6];\n bw = a[7];\n out[4] = qx * bw + qw * bx + qy * bz - qz * by;\n out[5] = qy * bw + qw * by + qz * bx - qx * bz;\n out[6] = qz * bw + qw * bz + qx * by - qy * bx;\n out[7] = qw * bw - qx * bx - qy * by - qz * bz;\n return out;\n}\n/**\n * Rotates a dual quat around a given axis. Does the normalisation automatically\n *\n * @param {quat2} out the receiving dual quaternion\n * @param {ReadonlyQuat2} a the dual quaternion to rotate\n * @param {ReadonlyVec3} axis the axis to rotate around\n * @param {Number} rad how far the rotation should be\n * @returns {quat2} out\n */\n\n\nfunction rotateAroundAxis(out, a, axis, rad) {\n //Special case for rad = 0\n if (Math.abs(rad) < glMatrix.EPSILON) {\n return copy(out, a);\n }\n\n var axisLength = Math.hypot(axis[0], axis[1], axis[2]);\n rad = rad * 0.5;\n var s = Math.sin(rad);\n var bx = s * axis[0] / axisLength;\n var by = s * axis[1] / axisLength;\n var bz = s * axis[2] / axisLength;\n var bw = Math.cos(rad);\n var ax1 = a[0],\n ay1 = a[1],\n az1 = a[2],\n aw1 = a[3];\n out[0] = ax1 * bw + aw1 * bx + ay1 * bz - az1 * by;\n out[1] = ay1 * bw + aw1 * by + az1 * bx - ax1 * bz;\n out[2] = az1 * bw + aw1 * bz + ax1 * by - ay1 * bx;\n out[3] = aw1 * bw - ax1 * bx - ay1 * by - az1 * bz;\n var ax = a[4],\n ay = a[5],\n az = a[6],\n aw = a[7];\n out[4] = ax * bw + aw * bx + ay * bz - az * by;\n out[5] = ay * bw + aw * by + az * bx - ax * bz;\n out[6] = az * bw + aw * bz + ax * by - ay * bx;\n out[7] = aw * bw - ax * bx - ay * by - az * bz;\n return out;\n}\n/**\n * Adds two dual quat's\n *\n * @param {quat2} out the receiving dual quaternion\n * @param {ReadonlyQuat2} a the first operand\n * @param {ReadonlyQuat2} b the second operand\n * @returns {quat2} out\n * @function\n */\n\n\nfunction add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n out[2] = a[2] + b[2];\n out[3] = a[3] + b[3];\n out[4] = a[4] + b[4];\n out[5] = a[5] + b[5];\n out[6] = a[6] + b[6];\n out[7] = a[7] + b[7];\n return out;\n}\n/**\n * Multiplies two dual quat's\n *\n * @param {quat2} out the receiving dual quaternion\n * @param {ReadonlyQuat2} a the first operand\n * @param {ReadonlyQuat2} b the second operand\n * @returns {quat2} out\n */\n\n\nfunction multiply(out, a, b) {\n var ax0 = a[0],\n ay0 = a[1],\n az0 = a[2],\n aw0 = a[3],\n bx1 = b[4],\n by1 = b[5],\n bz1 = b[6],\n bw1 = b[7],\n ax1 = a[4],\n ay1 = a[5],\n az1 = a[6],\n aw1 = a[7],\n bx0 = b[0],\n by0 = b[1],\n bz0 = b[2],\n bw0 = b[3];\n out[0] = ax0 * bw0 + aw0 * bx0 + ay0 * bz0 - az0 * by0;\n out[1] = ay0 * bw0 + aw0 * by0 + az0 * bx0 - ax0 * bz0;\n out[2] = az0 * bw0 + aw0 * bz0 + ax0 * by0 - ay0 * bx0;\n out[3] = aw0 * bw0 - ax0 * bx0 - ay0 * by0 - az0 * bz0;\n out[4] = ax0 * bw1 + aw0 * bx1 + ay0 * bz1 - az0 * by1 + ax1 * bw0 + aw1 * bx0 + ay1 * bz0 - az1 * by0;\n out[5] = ay0 * bw1 + aw0 * by1 + az0 * bx1 - ax0 * bz1 + ay1 * bw0 + aw1 * by0 + az1 * bx0 - ax1 * bz0;\n out[6] = az0 * bw1 + aw0 * bz1 + ax0 * by1 - ay0 * bx1 + az1 * bw0 + aw1 * bz0 + ax1 * by0 - ay1 * bx0;\n out[7] = aw0 * bw1 - ax0 * bx1 - ay0 * by1 - az0 * bz1 + aw1 * bw0 - ax1 * bx0 - ay1 * by0 - az1 * bz0;\n return out;\n}\n/**\n * Alias for {@link quat2.multiply}\n * @function\n */\n\n\nvar mul = multiply;\n/**\n * Scales a dual quat by a scalar number\n *\n * @param {quat2} out the receiving dual quat\n * @param {ReadonlyQuat2} a the dual quat to scale\n * @param {Number} b amount to scale the dual quat by\n * @returns {quat2} out\n * @function\n */\n\nexports.mul = mul;\n\nfunction scale(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n out[2] = a[2] * b;\n out[3] = a[3] * b;\n out[4] = a[4] * b;\n out[5] = a[5] * b;\n out[6] = a[6] * b;\n out[7] = a[7] * b;\n return out;\n}\n/**\n * Calculates the dot product of two dual quat's (The dot product of the real parts)\n *\n * @param {ReadonlyQuat2} a the first operand\n * @param {ReadonlyQuat2} b the second operand\n * @returns {Number} dot product of a and b\n * @function\n */\n\n\nvar dot = quat.dot;\n/**\n * Performs a linear interpolation between two dual quats's\n * NOTE: The resulting dual quaternions won't always be normalized (The error is most noticeable when t = 0.5)\n *\n * @param {quat2} out the receiving dual quat\n * @param {ReadonlyQuat2} a the first operand\n * @param {ReadonlyQuat2} b the second operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {quat2} out\n */\n\nexports.dot = dot;\n\nfunction lerp(out, a, b, t) {\n var mt = 1 - t;\n if (dot(a, b) < 0) t = -t;\n out[0] = a[0] * mt + b[0] * t;\n out[1] = a[1] * mt + b[1] * t;\n out[2] = a[2] * mt + b[2] * t;\n out[3] = a[3] * mt + b[3] * t;\n out[4] = a[4] * mt + b[4] * t;\n out[5] = a[5] * mt + b[5] * t;\n out[6] = a[6] * mt + b[6] * t;\n out[7] = a[7] * mt + b[7] * t;\n return out;\n}\n/**\n * Calculates the inverse of a dual quat. If they are normalized, conjugate is cheaper\n *\n * @param {quat2} out the receiving dual quaternion\n * @param {ReadonlyQuat2} a dual quat to calculate inverse of\n * @returns {quat2} out\n */\n\n\nfunction invert(out, a) {\n var sqlen = squaredLength(a);\n out[0] = -a[0] / sqlen;\n out[1] = -a[1] / sqlen;\n out[2] = -a[2] / sqlen;\n out[3] = a[3] / sqlen;\n out[4] = -a[4] / sqlen;\n out[5] = -a[5] / sqlen;\n out[6] = -a[6] / sqlen;\n out[7] = a[7] / sqlen;\n return out;\n}\n/**\n * Calculates the conjugate of a dual quat\n * If the dual quaternion is normalized, this function is faster than quat2.inverse and produces the same result.\n *\n * @param {quat2} out the receiving quaternion\n * @param {ReadonlyQuat2} a quat to calculate conjugate of\n * @returns {quat2} out\n */\n\n\nfunction conjugate(out, a) {\n out[0] = -a[0];\n out[1] = -a[1];\n out[2] = -a[2];\n out[3] = a[3];\n out[4] = -a[4];\n out[5] = -a[5];\n out[6] = -a[6];\n out[7] = a[7];\n return out;\n}\n/**\n * Calculates the length of a dual quat\n *\n * @param {ReadonlyQuat2} a dual quat to calculate length of\n * @returns {Number} length of a\n * @function\n */\n\n\nvar length = quat.length;\n/**\n * Alias for {@link quat2.length}\n * @function\n */\n\nexports.length = length;\nvar len = length;\n/**\n * Calculates the squared length of a dual quat\n *\n * @param {ReadonlyQuat2} a dual quat to calculate squared length of\n * @returns {Number} squared length of a\n * @function\n */\n\nexports.len = len;\nvar squaredLength = quat.squaredLength;\n/**\n * Alias for {@link quat2.squaredLength}\n * @function\n */\n\nexports.squaredLength = squaredLength;\nvar sqrLen = squaredLength;\n/**\n * Normalize a dual quat\n *\n * @param {quat2} out the receiving dual quaternion\n * @param {ReadonlyQuat2} a dual quaternion to normalize\n * @returns {quat2} out\n * @function\n */\n\nexports.sqrLen = sqrLen;\n\nfunction normalize(out, a) {\n var magnitude = squaredLength(a);\n\n if (magnitude > 0) {\n magnitude = Math.sqrt(magnitude);\n var a0 = a[0] / magnitude;\n var a1 = a[1] / magnitude;\n var a2 = a[2] / magnitude;\n var a3 = a[3] / magnitude;\n var b0 = a[4];\n var b1 = a[5];\n var b2 = a[6];\n var b3 = a[7];\n var a_dot_b = a0 * b0 + a1 * b1 + a2 * b2 + a3 * b3;\n out[0] = a0;\n out[1] = a1;\n out[2] = a2;\n out[3] = a3;\n out[4] = (b0 - a0 * a_dot_b) / magnitude;\n out[5] = (b1 - a1 * a_dot_b) / magnitude;\n out[6] = (b2 - a2 * a_dot_b) / magnitude;\n out[7] = (b3 - a3 * a_dot_b) / magnitude;\n }\n\n return out;\n}\n/**\n * Returns a string representation of a dual quatenion\n *\n * @param {ReadonlyQuat2} a dual quaternion to represent as a string\n * @returns {String} string representation of the dual quat\n */\n\n\nfunction str(a) {\n return \"quat2(\" + a[0] + \", \" + a[1] + \", \" + a[2] + \", \" + a[3] + \", \" + a[4] + \", \" + a[5] + \", \" + a[6] + \", \" + a[7] + \")\";\n}\n/**\n * Returns whether or not the dual quaternions have exactly the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyQuat2} a the first dual quaternion.\n * @param {ReadonlyQuat2} b the second dual quaternion.\n * @returns {Boolean} true if the dual quaternions are equal, false otherwise.\n */\n\n\nfunction exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1] && a[2] === b[2] && a[3] === b[3] && a[4] === b[4] && a[5] === b[5] && a[6] === b[6] && a[7] === b[7];\n}\n/**\n * Returns whether or not the dual quaternions have approximately the same elements in the same position.\n *\n * @param {ReadonlyQuat2} a the first dual quat.\n * @param {ReadonlyQuat2} b the second dual quat.\n * @returns {Boolean} true if the dual quats are equal, false otherwise.\n */\n\n\nfunction equals(a, b) {\n var a0 = a[0],\n a1 = a[1],\n a2 = a[2],\n a3 = a[3],\n a4 = a[4],\n a5 = a[5],\n a6 = a[6],\n a7 = a[7];\n var b0 = b[0],\n b1 = b[1],\n b2 = b[2],\n b3 = b[3],\n b4 = b[4],\n b5 = b[5],\n b6 = b[6],\n b7 = b[7];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1)) && Math.abs(a2 - b2) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a2), Math.abs(b2)) && Math.abs(a3 - b3) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a3), Math.abs(b3)) && Math.abs(a4 - b4) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a4), Math.abs(b4)) && Math.abs(a5 - b5) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a5), Math.abs(b5)) && Math.abs(a6 - b6) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a6), Math.abs(b6)) && Math.abs(a7 - b7) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a7), Math.abs(b7));\n}", "\"use strict\";\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.create = create;\nexports.clone = clone;\nexports.fromValues = fromValues;\nexports.copy = copy;\nexports.set = set;\nexports.add = add;\nexports.subtract = subtract;\nexports.multiply = multiply;\nexports.divide = divide;\nexports.ceil = ceil;\nexports.floor = floor;\nexports.min = min;\nexports.max = max;\nexports.round = round;\nexports.scale = scale;\nexports.scaleAndAdd = scaleAndAdd;\nexports.distance = distance;\nexports.squaredDistance = squaredDistance;\nexports.length = length;\nexports.squaredLength = squaredLength;\nexports.negate = negate;\nexports.inverse = inverse;\nexports.normalize = normalize;\nexports.dot = dot;\nexports.cross = cross;\nexports.lerp = lerp;\nexports.random = random;\nexports.transformMat2 = transformMat2;\nexports.transformMat2d = transformMat2d;\nexports.transformMat3 = transformMat3;\nexports.transformMat4 = transformMat4;\nexports.rotate = rotate;\nexports.angle = angle;\nexports.zero = zero;\nexports.str = str;\nexports.exactEquals = exactEquals;\nexports.equals = equals;\nexports.forEach = exports.sqrLen = exports.sqrDist = exports.dist = exports.div = exports.mul = exports.sub = exports.len = void 0;\n\nvar glMatrix = _interopRequireWildcard(require(\"./common.js\"));\n\nfunction _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== \"function\") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }\n\nfunction _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== \"object\" && typeof obj !== \"function\") { return { \"default\": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== \"default\" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj[\"default\"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }\n\n/**\n * 2 Dimensional Vector\n * @module vec2\n */\n\n/**\n * Creates a new, empty vec2\n *\n * @returns {vec2} a new 2D vector\n */\nfunction create() {\n var out = new glMatrix.ARRAY_TYPE(2);\n\n if (glMatrix.ARRAY_TYPE != Float32Array) {\n out[0] = 0;\n out[1] = 0;\n }\n\n return out;\n}\n/**\n * Creates a new vec2 initialized with values from an existing vector\n *\n * @param {ReadonlyVec2} a vector to clone\n * @returns {vec2} a new 2D vector\n */\n\n\nfunction clone(a) {\n var out = new glMatrix.ARRAY_TYPE(2);\n out[0] = a[0];\n out[1] = a[1];\n return out;\n}\n/**\n * Creates a new vec2 initialized with the given values\n *\n * @param {Number} x X component\n * @param {Number} y Y component\n * @returns {vec2} a new 2D vector\n */\n\n\nfunction fromValues(x, y) {\n var out = new glMatrix.ARRAY_TYPE(2);\n out[0] = x;\n out[1] = y;\n return out;\n}\n/**\n * Copy the values from one vec2 to another\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the source vector\n * @returns {vec2} out\n */\n\n\nfunction copy(out, a) {\n out[0] = a[0];\n out[1] = a[1];\n return out;\n}\n/**\n * Set the components of a vec2 to the given values\n *\n * @param {vec2} out the receiving vector\n * @param {Number} x X component\n * @param {Number} y Y component\n * @returns {vec2} out\n */\n\n\nfunction set(out, x, y) {\n out[0] = x;\n out[1] = y;\n return out;\n}\n/**\n * Adds two vec2's\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec2} out\n */\n\n\nfunction add(out, a, b) {\n out[0] = a[0] + b[0];\n out[1] = a[1] + b[1];\n return out;\n}\n/**\n * Subtracts vector b from vector a\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec2} out\n */\n\n\nfunction subtract(out, a, b) {\n out[0] = a[0] - b[0];\n out[1] = a[1] - b[1];\n return out;\n}\n/**\n * Multiplies two vec2's\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec2} out\n */\n\n\nfunction multiply(out, a, b) {\n out[0] = a[0] * b[0];\n out[1] = a[1] * b[1];\n return out;\n}\n/**\n * Divides two vec2's\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec2} out\n */\n\n\nfunction divide(out, a, b) {\n out[0] = a[0] / b[0];\n out[1] = a[1] / b[1];\n return out;\n}\n/**\n * Math.ceil the components of a vec2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a vector to ceil\n * @returns {vec2} out\n */\n\n\nfunction ceil(out, a) {\n out[0] = Math.ceil(a[0]);\n out[1] = Math.ceil(a[1]);\n return out;\n}\n/**\n * Math.floor the components of a vec2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a vector to floor\n * @returns {vec2} out\n */\n\n\nfunction floor(out, a) {\n out[0] = Math.floor(a[0]);\n out[1] = Math.floor(a[1]);\n return out;\n}\n/**\n * Returns the minimum of two vec2's\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec2} out\n */\n\n\nfunction min(out, a, b) {\n out[0] = Math.min(a[0], b[0]);\n out[1] = Math.min(a[1], b[1]);\n return out;\n}\n/**\n * Returns the maximum of two vec2's\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec2} out\n */\n\n\nfunction max(out, a, b) {\n out[0] = Math.max(a[0], b[0]);\n out[1] = Math.max(a[1], b[1]);\n return out;\n}\n/**\n * Math.round the components of a vec2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a vector to round\n * @returns {vec2} out\n */\n\n\nfunction round(out, a) {\n out[0] = Math.round(a[0]);\n out[1] = Math.round(a[1]);\n return out;\n}\n/**\n * Scales a vec2 by a scalar number\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the vector to scale\n * @param {Number} b amount to scale the vector by\n * @returns {vec2} out\n */\n\n\nfunction scale(out, a, b) {\n out[0] = a[0] * b;\n out[1] = a[1] * b;\n return out;\n}\n/**\n * Adds two vec2's after scaling the second operand by a scalar value\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @param {Number} scale the amount to scale b by before adding\n * @returns {vec2} out\n */\n\n\nfunction scaleAndAdd(out, a, b, scale) {\n out[0] = a[0] + b[0] * scale;\n out[1] = a[1] + b[1] * scale;\n return out;\n}\n/**\n * Calculates the euclidian distance between two vec2's\n *\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {Number} distance between a and b\n */\n\n\nfunction distance(a, b) {\n var x = b[0] - a[0],\n y = b[1] - a[1];\n return Math.hypot(x, y);\n}\n/**\n * Calculates the squared euclidian distance between two vec2's\n *\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {Number} squared distance between a and b\n */\n\n\nfunction squaredDistance(a, b) {\n var x = b[0] - a[0],\n y = b[1] - a[1];\n return x * x + y * y;\n}\n/**\n * Calculates the length of a vec2\n *\n * @param {ReadonlyVec2} a vector to calculate length of\n * @returns {Number} length of a\n */\n\n\nfunction length(a) {\n var x = a[0],\n y = a[1];\n return Math.hypot(x, y);\n}\n/**\n * Calculates the squared length of a vec2\n *\n * @param {ReadonlyVec2} a vector to calculate squared length of\n * @returns {Number} squared length of a\n */\n\n\nfunction squaredLength(a) {\n var x = a[0],\n y = a[1];\n return x * x + y * y;\n}\n/**\n * Negates the components of a vec2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a vector to negate\n * @returns {vec2} out\n */\n\n\nfunction negate(out, a) {\n out[0] = -a[0];\n out[1] = -a[1];\n return out;\n}\n/**\n * Returns the inverse of the components of a vec2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a vector to invert\n * @returns {vec2} out\n */\n\n\nfunction inverse(out, a) {\n out[0] = 1.0 / a[0];\n out[1] = 1.0 / a[1];\n return out;\n}\n/**\n * Normalize a vec2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a vector to normalize\n * @returns {vec2} out\n */\n\n\nfunction normalize(out, a) {\n var x = a[0],\n y = a[1];\n var len = x * x + y * y;\n\n if (len > 0) {\n //TODO: evaluate use of glm_invsqrt here?\n len = 1 / Math.sqrt(len);\n }\n\n out[0] = a[0] * len;\n out[1] = a[1] * len;\n return out;\n}\n/**\n * Calculates the dot product of two vec2's\n *\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {Number} dot product of a and b\n */\n\n\nfunction dot(a, b) {\n return a[0] * b[0] + a[1] * b[1];\n}\n/**\n * Computes the cross product of two vec2's\n * Note that the cross product must by definition produce a 3D vector\n *\n * @param {vec3} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @returns {vec3} out\n */\n\n\nfunction cross(out, a, b) {\n var z = a[0] * b[1] - a[1] * b[0];\n out[0] = out[1] = 0;\n out[2] = z;\n return out;\n}\n/**\n * Performs a linear interpolation between two vec2's\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the first operand\n * @param {ReadonlyVec2} b the second operand\n * @param {Number} t interpolation amount, in the range [0-1], between the two inputs\n * @returns {vec2} out\n */\n\n\nfunction lerp(out, a, b, t) {\n var ax = a[0],\n ay = a[1];\n out[0] = ax + t * (b[0] - ax);\n out[1] = ay + t * (b[1] - ay);\n return out;\n}\n/**\n * Generates a random vector with the given scale\n *\n * @param {vec2} out the receiving vector\n * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned\n * @returns {vec2} out\n */\n\n\nfunction random(out, scale) {\n scale = scale || 1.0;\n var r = glMatrix.RANDOM() * 2.0 * Math.PI;\n out[0] = Math.cos(r) * scale;\n out[1] = Math.sin(r) * scale;\n return out;\n}\n/**\n * Transforms the vec2 with a mat2\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the vector to transform\n * @param {ReadonlyMat2} m matrix to transform with\n * @returns {vec2} out\n */\n\n\nfunction transformMat2(out, a, m) {\n var x = a[0],\n y = a[1];\n out[0] = m[0] * x + m[2] * y;\n out[1] = m[1] * x + m[3] * y;\n return out;\n}\n/**\n * Transforms the vec2 with a mat2d\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the vector to transform\n * @param {ReadonlyMat2d} m matrix to transform with\n * @returns {vec2} out\n */\n\n\nfunction transformMat2d(out, a, m) {\n var x = a[0],\n y = a[1];\n out[0] = m[0] * x + m[2] * y + m[4];\n out[1] = m[1] * x + m[3] * y + m[5];\n return out;\n}\n/**\n * Transforms the vec2 with a mat3\n * 3rd vector component is implicitly '1'\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the vector to transform\n * @param {ReadonlyMat3} m matrix to transform with\n * @returns {vec2} out\n */\n\n\nfunction transformMat3(out, a, m) {\n var x = a[0],\n y = a[1];\n out[0] = m[0] * x + m[3] * y + m[6];\n out[1] = m[1] * x + m[4] * y + m[7];\n return out;\n}\n/**\n * Transforms the vec2 with a mat4\n * 3rd vector component is implicitly '0'\n * 4th vector component is implicitly '1'\n *\n * @param {vec2} out the receiving vector\n * @param {ReadonlyVec2} a the vector to transform\n * @param {ReadonlyMat4} m matrix to transform with\n * @returns {vec2} out\n */\n\n\nfunction transformMat4(out, a, m) {\n var x = a[0];\n var y = a[1];\n out[0] = m[0] * x + m[4] * y + m[12];\n out[1] = m[1] * x + m[5] * y + m[13];\n return out;\n}\n/**\n * Rotate a 2D vector\n * @param {vec2} out The receiving vec2\n * @param {ReadonlyVec2} a The vec2 point to rotate\n * @param {ReadonlyVec2} b The origin of the rotation\n * @param {Number} rad The angle of rotation in radians\n * @returns {vec2} out\n */\n\n\nfunction rotate(out, a, b, rad) {\n //Translate point to the origin\n var p0 = a[0] - b[0],\n p1 = a[1] - b[1],\n sinC = Math.sin(rad),\n cosC = Math.cos(rad); //perform rotation and translate to correct position\n\n out[0] = p0 * cosC - p1 * sinC + b[0];\n out[1] = p0 * sinC + p1 * cosC + b[1];\n return out;\n}\n/**\n * Get the angle between two 2D vectors\n * @param {ReadonlyVec2} a The first operand\n * @param {ReadonlyVec2} b The second operand\n * @returns {Number} The angle in radians\n */\n\n\nfunction angle(a, b) {\n var x1 = a[0],\n y1 = a[1],\n x2 = b[0],\n y2 = b[1],\n // mag is the product of the magnitudes of a and b\n mag = Math.sqrt(x1 * x1 + y1 * y1) * Math.sqrt(x2 * x2 + y2 * y2),\n // mag &&.. short circuits if mag == 0\n cosine = mag && (x1 * x2 + y1 * y2) / mag; // Math.min(Math.max(cosine, -1), 1) clamps the cosine between -1 and 1\n\n return Math.acos(Math.min(Math.max(cosine, -1), 1));\n}\n/**\n * Set the components of a vec2 to zero\n *\n * @param {vec2} out the receiving vector\n * @returns {vec2} out\n */\n\n\nfunction zero(out) {\n out[0] = 0.0;\n out[1] = 0.0;\n return out;\n}\n/**\n * Returns a string representation of a vector\n *\n * @param {ReadonlyVec2} a vector to represent as a string\n * @returns {String} string representation of the vector\n */\n\n\nfunction str(a) {\n return \"vec2(\" + a[0] + \", \" + a[1] + \")\";\n}\n/**\n * Returns whether or not the vectors exactly have the same elements in the same position (when compared with ===)\n *\n * @param {ReadonlyVec2} a The first vector.\n * @param {ReadonlyVec2} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\n\nfunction exactEquals(a, b) {\n return a[0] === b[0] && a[1] === b[1];\n}\n/**\n * Returns whether or not the vectors have approximately the same elements in the same position.\n *\n * @param {ReadonlyVec2} a The first vector.\n * @param {ReadonlyVec2} b The second vector.\n * @returns {Boolean} True if the vectors are equal, false otherwise.\n */\n\n\nfunction equals(a, b) {\n var a0 = a[0],\n a1 = a[1];\n var b0 = b[0],\n b1 = b[1];\n return Math.abs(a0 - b0) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a0), Math.abs(b0)) && Math.abs(a1 - b1) <= glMatrix.EPSILON * Math.max(1.0, Math.abs(a1), Math.abs(b1));\n}\n/**\n * Alias for {@link vec2.length}\n * @function\n */\n\n\nvar len = length;\n/**\n * Alias for {@link vec2.subtract}\n * @function\n */\n\nexports.len = len;\nvar sub = subtract;\n/**\n * Alias for {@link vec2.multiply}\n * @function\n */\n\nexports.sub = sub;\nvar mul = multiply;\n/**\n * Alias for {@link vec2.divide}\n * @function\n */\n\nexports.mul = mul;\nvar div = divide;\n/**\n * Alias for {@link vec2.distance}\n * @function\n */\n\nexports.div = div;\nvar dist = distance;\n/**\n * Alias for {@link vec2.squaredDistance}\n * @function\n */\n\nexports.dist = dist;\nvar sqrDist = squaredDistance;\n/**\n * Alias for {@link vec2.squaredLength}\n * @function\n */\n\nexports.sqrDist = sqrDist;\nvar sqrLen = squaredLength;\n/**\n * Perform some operation over an array of vec2s.\n *\n * @param {Array} a the array of vectors to iterate over\n * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed\n * @param {Number} offset Number of elements to skip at the beginning of the array\n * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array\n * @param {Function} fn Function to call for each vector in the array\n * @param {Object} [arg] additional argument to pass to fn\n * @returns {Array} a\n * @function\n */\n\nexports.sqrLen = sqrLen;\n\nvar forEach = function () {\n var vec = create();\n return function (a, stride, offset, count, fn, arg) {\n var i, l;\n\n if (!stride) {\n stride = 2;\n }\n\n if (!offset) {\n offset = 0;\n }\n\n if (count) {\n l = Math.min(count * stride + offset, a.length);\n } else {\n l = a.length;\n }\n\n for (i = offset; i < l; i += stride) {\n vec[0] = a[i];\n vec[1] = a[i + 1];\n fn(vec, vec, arg);\n a[i] = vec[0];\n a[i + 1] = vec[1];\n }\n\n return a;\n };\n}();\n\nexports.forEach = forEach;", "\"use strict\";\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.vec4 = exports.vec3 = exports.vec2 = exports.quat2 = exports.quat = exports.mat4 = exports.mat3 = exports.mat2d = exports.mat2 = exports.glMatrix = void 0;\n\nvar glMatrix = _interopRequireWildcard(require(\"./common.js\"));\n\nexports.glMatrix = glMatrix;\n\nvar mat2 = _interopRequireWildcard(require(\"./mat2.js\"));\n\nexports.mat2 = mat2;\n\nvar mat2d = _interopRequireWildcard(require(\"./mat2d.js\"));\n\nexports.mat2d = mat2d;\n\nvar mat3 = _interopRequireWildcard(require(\"./mat3.js\"));\n\nexports.mat3 = mat3;\n\nvar mat4 = _interopRequireWildcard(require(\"./mat4.js\"));\n\nexports.mat4 = mat4;\n\nvar quat = _interopRequireWildcard(require(\"./quat.js\"));\n\nexports.quat = quat;\n\nvar quat2 = _interopRequireWildcard(require(\"./quat2.js\"));\n\nexports.quat2 = quat2;\n\nvar vec2 = _interopRequireWildcard(require(\"./vec2.js\"));\n\nexports.vec2 = vec2;\n\nvar vec3 = _interopRequireWildcard(require(\"./vec3.js\"));\n\nexports.vec3 = vec3;\n\nvar vec4 = _interopRequireWildcard(require(\"./vec4.js\"));\n\nexports.vec4 = vec4;\n\nfunction _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== \"function\") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }\n\nfunction _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== \"object\" && typeof obj !== \"function\") { return { \"default\": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== \"default\" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj[\"default\"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }", "'use strict';\n\nmodule.exports = UnitBezier;\n\nfunction UnitBezier(p1x, p1y, p2x, p2y) {\n // Calculate the polynomial coefficients, implicit first and last control points are (0,0) and (1,1).\n this.cx = 3.0 * p1x;\n this.bx = 3.0 * (p2x - p1x) - this.cx;\n this.ax = 1.0 - this.cx - this.bx;\n\n this.cy = 3.0 * p1y;\n this.by = 3.0 * (p2y - p1y) - this.cy;\n this.ay = 1.0 - this.cy - this.by;\n\n this.p1x = p1x;\n this.p1y = p1y;\n this.p2x = p2x;\n this.p2y = p2y;\n}\n\nUnitBezier.prototype = {\n sampleCurveX: function (t) {\n // `ax t^3 + bx t^2 + cx t' expanded using Horner's rule.\n return ((this.ax * t + this.bx) * t + this.cx) * t;\n },\n\n sampleCurveY: function (t) {\n return ((this.ay * t + this.by) * t + this.cy) * t;\n },\n\n sampleCurveDerivativeX: function (t) {\n return (3.0 * this.ax * t + 2.0 * this.bx) * t + this.cx;\n },\n\n solveCurveX: function (x, epsilon) {\n if (epsilon === undefined) epsilon = 1e-6;\n\n if (x < 0.0) return 0.0;\n if (x > 1.0) return 1.0;\n\n var t = x;\n\n // First try a few iterations of Newton's method - normally very fast.\n for (var i = 0; i < 8; i++) {\n var x2 = this.sampleCurveX(t) - x;\n if (Math.abs(x2) < epsilon) return t;\n\n var d2 = this.sampleCurveDerivativeX(t);\n if (Math.abs(d2) < 1e-6) break;\n\n t = t - x2 / d2;\n }\n\n // Fall back to the bisection method for reliability.\n var t0 = 0.0;\n var t1 = 1.0;\n t = x;\n\n for (i = 0; i < 20; i++) {\n x2 = this.sampleCurveX(t);\n if (Math.abs(x2 - x) < epsilon) break;\n\n if (x > x2) {\n t0 = t;\n } else {\n t1 = t;\n }\n\n t = (t1 - t0) * 0.5 + t0;\n }\n\n return t;\n },\n\n solve: function (x, epsilon) {\n return this.sampleCurveY(this.solveCurveX(x, epsilon));\n }\n};\n", "'use strict';\n\nmodule.exports = Point;\n\n/**\n * A standalone point geometry with useful accessor, comparison, and\n * modification methods.\n *\n * @class Point\n * @param {Number} x the x-coordinate. this could be longitude or screen\n * pixels, or any other sort of unit.\n * @param {Number} y the y-coordinate. this could be latitude or screen\n * pixels, or any other sort of unit.\n * @example\n * var point = new Point(-77, 38);\n */\nfunction Point(x, y) {\n this.x = x;\n this.y = y;\n}\n\nPoint.prototype = {\n\n /**\n * Clone this point, returning a new point that can be modified\n * without affecting the old one.\n * @return {Point} the clone\n */\n clone: function() { return new Point(this.x, this.y); },\n\n /**\n * Add this point's x & y coordinates to another point,\n * yielding a new point.\n * @param {Point} p the other point\n * @return {Point} output point\n */\n add: function(p) { return this.clone()._add(p); },\n\n /**\n * Subtract this point's x & y coordinates to from point,\n * yielding a new point.\n * @param {Point} p the other point\n * @return {Point} output point\n */\n sub: function(p) { return this.clone()._sub(p); },\n\n /**\n * Multiply this point's x & y coordinates by point,\n * yielding a new point.\n * @param {Point} p the other point\n * @return {Point} output point\n */\n multByPoint: function(p) { return this.clone()._multByPoint(p); },\n\n /**\n * Divide this point's x & y coordinates by point,\n * yielding a new point.\n * @param {Point} p the other point\n * @return {Point} output point\n */\n divByPoint: function(p) { return this.clone()._divByPoint(p); },\n\n /**\n * Multiply this point's x & y coordinates by a factor,\n * yielding a new point.\n * @param {Point} k factor\n * @return {Point} output point\n */\n mult: function(k) { return this.clone()._mult(k); },\n\n /**\n * Divide this point's x & y coordinates by a factor,\n * yielding a new point.\n * @param {Point} k factor\n * @return {Point} output point\n */\n div: function(k) { return this.clone()._div(k); },\n\n /**\n * Rotate this point around the 0, 0 origin by an angle a,\n * given in radians\n * @param {Number} a angle to rotate around, in radians\n * @return {Point} output point\n */\n rotate: function(a) { return this.clone()._rotate(a); },\n\n /**\n * Rotate this point around p point by an angle a,\n * given in radians\n * @param {Number} a angle to rotate around, in radians\n * @param {Point} p Point to rotate around\n * @return {Point} output point\n */\n rotateAround: function(a,p) { return this.clone()._rotateAround(a,p); },\n\n /**\n * Multiply this point by a 4x1 transformation matrix\n * @param {Array} m transformation matrix\n * @return {Point} output point\n */\n matMult: function(m) { return this.clone()._matMult(m); },\n\n /**\n * Calculate this point but as a unit vector from 0, 0, meaning\n * that the distance from the resulting point to the 0, 0\n * coordinate will be equal to 1 and the angle from the resulting\n * point to the 0, 0 coordinate will be the same as before.\n * @return {Point} unit vector point\n */\n unit: function() { return this.clone()._unit(); },\n\n /**\n * Compute a perpendicular point, where the new y coordinate\n * is the old x coordinate and the new x coordinate is the old y\n * coordinate multiplied by -1\n * @return {Point} perpendicular point\n */\n perp: function() { return this.clone()._perp(); },\n\n /**\n * Return a version of this point with the x & y coordinates\n * rounded to integers.\n * @return {Point} rounded point\n */\n round: function() { return this.clone()._round(); },\n\n /**\n * Return the magitude of this point: this is the Euclidean\n * distance from the 0, 0 coordinate to this point's x and y\n * coordinates.\n * @return {Number} magnitude\n */\n mag: function() {\n return Math.sqrt(this.x * this.x + this.y * this.y);\n },\n\n /**\n * Judge whether this point is equal to another point, returning\n * true or false.\n * @param {Point} other the other point\n * @return {boolean} whether the points are equal\n */\n equals: function(other) {\n return this.x === other.x &&\n this.y === other.y;\n },\n\n /**\n * Calculate the distance from this point to another point\n * @param {Point} p the other point\n * @return {Number} distance\n */\n dist: function(p) {\n return Math.sqrt(this.distSqr(p));\n },\n\n /**\n * Calculate the distance from this point to another point,\n * without the square root step. Useful if you're comparing\n * relative distances.\n * @param {Point} p the other point\n * @return {Number} distance\n */\n distSqr: function(p) {\n var dx = p.x - this.x,\n dy = p.y - this.y;\n return dx * dx + dy * dy;\n },\n\n /**\n * Get the angle from the 0, 0 coordinate to this point, in radians\n * coordinates.\n * @return {Number} angle\n */\n angle: function() {\n return Math.atan2(this.y, this.x);\n },\n\n /**\n * Get the angle from this point to another point, in radians\n * @param {Point} b the other point\n * @return {Number} angle\n */\n angleTo: function(b) {\n return Math.atan2(this.y - b.y, this.x - b.x);\n },\n\n /**\n * Get the angle between this point and another point, in radians\n * @param {Point} b the other point\n * @return {Number} angle\n */\n angleWith: function(b) {\n return this.angleWithSep(b.x, b.y);\n },\n\n /*\n * Find the angle of the two vectors, solving the formula for\n * the cross product a x b = |a||b|sin(\u03B8) for \u03B8.\n * @param {Number} x the x-coordinate\n * @param {Number} y the y-coordinate\n * @return {Number} the angle in radians\n */\n angleWithSep: function(x, y) {\n return Math.atan2(\n this.x * y - this.y * x,\n this.x * x + this.y * y);\n },\n\n _matMult: function(m) {\n var x = m[0] * this.x + m[1] * this.y,\n y = m[2] * this.x + m[3] * this.y;\n this.x = x;\n this.y = y;\n return this;\n },\n\n _add: function(p) {\n this.x += p.x;\n this.y += p.y;\n return this;\n },\n\n _sub: function(p) {\n this.x -= p.x;\n this.y -= p.y;\n return this;\n },\n\n _mult: function(k) {\n this.x *= k;\n this.y *= k;\n return this;\n },\n\n _div: function(k) {\n this.x /= k;\n this.y /= k;\n return this;\n },\n\n _multByPoint: function(p) {\n this.x *= p.x;\n this.y *= p.y;\n return this;\n },\n\n _divByPoint: function(p) {\n this.x /= p.x;\n this.y /= p.y;\n return this;\n },\n\n _unit: function() {\n this._div(this.mag());\n return this;\n },\n\n _perp: function() {\n var y = this.y;\n this.y = this.x;\n this.x = -y;\n return this;\n },\n\n _rotate: function(angle) {\n var cos = Math.cos(angle),\n sin = Math.sin(angle),\n x = cos * this.x - sin * this.y,\n y = sin * this.x + cos * this.y;\n this.x = x;\n this.y = y;\n return this;\n },\n\n _rotateAround: function(angle, p) {\n var cos = Math.cos(angle),\n sin = Math.sin(angle),\n x = p.x + cos * (this.x - p.x) - sin * (this.y - p.y),\n y = p.y + sin * (this.x - p.x) + cos * (this.y - p.y);\n this.x = x;\n this.y = y;\n return this;\n },\n\n _round: function() {\n this.x = Math.round(this.x);\n this.y = Math.round(this.y);\n return this;\n }\n};\n\n/**\n * Construct a point from an array if necessary, otherwise if the input\n * is already a Point, or an unknown type, return it unchanged\n * @param {Array|Point|*} a any kind of input value\n * @return {Point} constructed point, or passed-through value.\n * @example\n * // this\n * var point = Point.convert([0, 1]);\n * // is equivalent to\n * var point = new Point(0, 1);\n */\nPoint.convert = function (a) {\n if (a instanceof Point) {\n return a;\n }\n if (Array.isArray(a)) {\n return new Point(a[0], a[1]);\n }\n return a;\n};\n", "// @flow\n\nimport {mat4} from 'gl-matrix';\n\nimport UnitBezier from '@mapbox/unitbezier';\n\nimport Point from '@mapbox/point-geometry';\nimport assert from 'assert';\n\nimport type {Callback} from '../types/callback.js';\nimport type {Mat4, Vec4} from 'gl-matrix';\n\nconst DEG_TO_RAD = Math.PI / 180;\nconst RAD_TO_DEG = 180 / Math.PI;\n\n/**\n * Converts an angle in degrees to radians\n * copy all properties from the source objects into the destination.\n * The last source object given overrides properties from previous\n * source objects.\n *\n * @param a angle to convert\n * @returns the angle in radians\n * @private\n */\nexport function degToRad(a: number): number {\n return a * DEG_TO_RAD;\n}\n\n/**\n * Converts an angle in radians to degrees\n * copy all properties from the source objects into the destination.\n * The last source object given overrides properties from previous\n * source objects.\n *\n * @param a angle to convert\n * @returns the angle in degrees\n * @private\n */\nexport function radToDeg(a: number): number {\n return a * RAD_TO_DEG;\n}\n\nconst TILE_CORNERS = [[0, 0], [1, 0], [1, 1], [0, 1]];\n\n/**\n * Given a particular bearing, returns the corner of the tile thats farthest\n * along the bearing.\n *\n * @param {number} bearing angle in degrees (-180, 180]\n * @returns {QuadCorner}\n * @private\n */\nexport function furthestTileCorner(bearing: number): [number, number] {\n const alignedBearing = ((bearing + 45) + 360) % 360;\n const cornerIdx = Math.round(alignedBearing / 90) % 4;\n return TILE_CORNERS[cornerIdx];\n}\n\n/**\n * @module util\n * @private\n */\n\n/**\n * Given a value `t` that varies between 0 and 1, return\n * an interpolation function that eases between 0 and 1 in a pleasing\n * cubic in-out fashion.\n *\n * @private\n */\nexport function easeCubicInOut(t: number): number {\n if (t <= 0) return 0;\n if (t >= 1) return 1;\n const t2 = t * t,\n t3 = t2 * t;\n return 4 * (t < 0.5 ? t3 : 3 * (t - t2) + t3 - 0.75);\n}\n\n/**\n * Computes an AABB for a set of points.\n *\n * @param {Point[]} points\n * @returns {{ min: Point, max: Point}}\n * @private\n */\nexport function getBounds(points: Point[]): { min: Point, max: Point} {\n let minX = Infinity;\n let minY = Infinity;\n let maxX = -Infinity;\n let maxY = -Infinity;\n for (const p of points) {\n minX = Math.min(minX, p.x);\n minY = Math.min(minY, p.y);\n maxX = Math.max(maxX, p.x);\n maxY = Math.max(maxY, p.y);\n }\n\n return {\n min: new Point(minX, minY),\n max: new Point(maxX, maxY),\n };\n}\n\n/**\n * Returns the square of the 2D distance between an AABB defined by min and max and a point.\n * If point is null or undefined, the AABB distance from the origin (0,0) is returned.\n *\n * @param {Array} min The minimum extent of the AABB.\n * @param {Array} max The maximum extent of the AABB.\n * @param {Array} [point] The point to compute the distance from, may be undefined.\n * @returns {number} The square distance from the AABB, 0.0 if the AABB contains the point.\n */\nexport function getAABBPointSquareDist(min: Array, max: Array, point: ?Array): number {\n let sqDist = 0.0;\n\n for (let i = 0; i < 2; ++i) {\n const v = point ? point[i] : 0.0;\n assert(min[i] < max[i], 'Invalid aabb min and max inputs, min[i] must be < max[i].');\n if (min[i] > v) sqDist += (min[i] - v) * (min[i] - v);\n if (max[i] < v) sqDist += (v - max[i]) * (v - max[i]);\n }\n\n return sqDist;\n}\n\n/**\n * Converts a AABB into a polygon with clockwise winding order.\n *\n * @param {Point} min The top left point.\n * @param {Point} max The bottom right point.\n * @param {number} [buffer=0] The buffer width.\n * @param {boolean} [close=true] Whether to close the polygon or not.\n * @returns {Point[]} The polygon.\n */\nexport function polygonizeBounds(min: Point, max: Point, buffer: number = 0, close: boolean = true): Point[] {\n const offset = new Point(buffer, buffer);\n const minBuf = min.sub(offset);\n const maxBuf = max.add(offset);\n const polygon = [minBuf, new Point(maxBuf.x, minBuf.y), maxBuf, new Point(minBuf.x, maxBuf.y)];\n\n if (close) {\n polygon.push(minBuf.clone());\n }\n return polygon;\n}\n\n/**\n * Takes a convex ring and expands it outward by applying a buffer around it.\n * This function assumes that the ring is in clockwise winding order.\n *\n * @param {Point[]} ring The input ring.\n * @param {number} buffer The buffer width.\n * @returns {Point[]} The expanded ring.\n */\nexport function bufferConvexPolygon(ring: Point[], buffer: number): Point[] {\n assert(ring.length > 2, 'bufferConvexPolygon requires the ring to have atleast 3 points');\n const output = [];\n for (let currIdx = 0; currIdx < ring.length; currIdx++) {\n const prevIdx = wrap(currIdx - 1, -1, ring.length - 1);\n const nextIdx = wrap(currIdx + 1, -1, ring.length - 1);\n const prev = ring[prevIdx];\n const curr = ring[currIdx];\n const next = ring[nextIdx];\n const p1 = prev.sub(curr).unit();\n const p2 = next.sub(curr).unit();\n const interiorAngle = p2.angleWithSep(p1.x, p1.y);\n // Calcuate a vector that points in the direction of the angle bisector between two sides.\n // Scale it based on a right angled triangle constructed at that corner.\n const offset = p1.add(p2).unit().mult(-1 * buffer / Math.sin(interiorAngle / 2));\n output.push(curr.add(offset));\n }\n return output;\n}\n\ntype EaseFunction = (t: number) => number;\n\n/**\n * Given given (x, y), (x1, y1) control points for a bezier curve,\n * return a function that interpolates along that curve.\n *\n * @param p1x control point 1 x coordinate\n * @param p1y control point 1 y coordinate\n * @param p2x control point 2 x coordinate\n * @param p2y control point 2 y coordinate\n * @private\n */\nexport function bezier(p1x: number, p1y: number, p2x: number, p2y: number): EaseFunction {\n const bezier = new UnitBezier(p1x, p1y, p2x, p2y);\n return function(t: number) {\n return bezier.solve(t);\n };\n}\n\n/**\n * A default bezier-curve powered easing function with\n * control points (0.25, 0.1) and (0.25, 1)\n *\n * @private\n */\nexport const ease: EaseFunction = bezier(0.25, 0.1, 0.25, 1);\n\n/**\n * constrain n to the given range via min + max\n *\n * @param n value\n * @param min the minimum value to be returned\n * @param max the maximum value to be returned\n * @returns the clamped value\n * @private\n */\nexport function clamp(n: number, min: number, max: number): number {\n return Math.min(max, Math.max(min, n));\n}\n\n/**\n * Equivalent to GLSL smoothstep.\n *\n * @param {number} e0 The lower edge of the sigmoid\n * @param {number} e1 The upper edge of the sigmoid\n * @param {number} x the value to be interpolated\n * @returns {number} in the range [0, 1]\n * @private\n */\nexport function smoothstep(e0: number, e1: number, x: number): number {\n x = clamp((x - e0) / (e1 - e0), 0, 1);\n return x * x * (3 - 2 * x);\n}\n\n/**\n * constrain n to the given range, excluding the minimum, via modular arithmetic\n *\n * @param n value\n * @param min the minimum value to be returned, exclusive\n * @param max the maximum value to be returned, inclusive\n * @returns constrained number\n * @private\n */\nexport function wrap(n: number, min: number, max: number): number {\n const d = max - min;\n const w = ((n - min) % d + d) % d + min;\n return (w === min) ? max : w;\n}\n\n/**\n * Computes shortest angle in range [-180, 180) between two angles.\n *\n * @param {*} a First angle in degrees\n * @param {*} b Second angle in degrees\n * @returns Shortest angle\n * @private\n */\nexport function shortestAngle(a: number, b: number): number {\n const diff = (b - a + 180) % 360 - 180;\n return diff < -180 ? diff + 360 : diff;\n}\n\n/*\n * Call an asynchronous function on an array of arguments,\n * calling `callback` with the completed results of all calls.\n *\n * @param array input to each call of the async function.\n * @param fn an async function with signature (data, callback)\n * @param callback a callback run after all async work is done.\n * called with an array, containing the results of each async call.\n * @private\n */\nexport function asyncAll(\n array: Array,\n fn: (item: Item, fnCallback: Callback) => void,\n callback: Callback>\n): void {\n if (!array.length) { return callback(null, []); }\n let remaining = array.length;\n const results = new Array(array.length);\n let error = null;\n array.forEach((item, i) => {\n fn(item, (err, result) => {\n if (err) error = err;\n results[i] = ((result: any): Result); // https://github.com/facebook/flow/issues/2123\n if (--remaining === 0) callback(error, results);\n });\n });\n}\n\n/*\n * Polyfill for Object.values. Not fully spec compliant, but we don't\n * need it to be.\n *\n * @private\n */\nexport function values(obj: {[key: string]: T}): Array {\n const result = [];\n for (const k in obj) {\n result.push(obj[k]);\n }\n return result;\n}\n\n/*\n * Compute the difference between the keys in one object and the keys\n * in another object.\n *\n * @returns keys difference\n * @private\n */\nexport function keysDifference(obj: {[key: string]: S}, other: {[key: string]: T}): Array {\n const difference = [];\n for (const i in obj) {\n if (!(i in other)) {\n difference.push(i);\n }\n }\n return difference;\n}\n\n/**\n * Given a destination object and optionally many source objects,\n * copy all properties from the source objects into the destination.\n * The last source object given overrides properties from previous\n * source objects.\n *\n * @param dest destination object\n * @param sources sources from which properties are pulled\n * @private\n */\nexport function extend(dest: Object, ...sources: Array): Object {\n for (const src of sources) {\n for (const k in src) {\n dest[k] = src[k];\n }\n }\n return dest;\n}\n\n/**\n * Given an object and a number of properties as strings, return version\n * of that object with only those properties.\n *\n * @param src the object\n * @param properties an array of property names chosen\n * to appear on the resulting object.\n * @returns object with limited properties.\n * @example\n * var foo = { name: 'Charlie', age: 10 };\n * var justName = pick(foo, ['name']);\n * // justName = { name: 'Charlie' }\n * @private\n */\nexport function pick(src: Object, properties: Array): Object {\n const result = {};\n for (let i = 0; i < properties.length; i++) {\n const k = properties[i];\n if (k in src) {\n result[k] = src[k];\n }\n }\n return result;\n}\n\nlet id = 1;\n\n/**\n * Return a unique numeric id, starting at 1 and incrementing with\n * each call.\n *\n * @returns unique numeric id.\n * @private\n */\nexport function uniqueId(): number {\n return id++;\n}\n\n/**\n * Return a random UUID (v4). Taken from: https://gist.github.com/jed/982883\n * @private\n */\nexport function uuid(): string {\n function b(a: void) {\n return a ? (a ^ Math.random() * (16 >> a / 4)).toString(16) :\n //$FlowFixMe: Flow doesn't like the implied array literal conversion here\n ([1e7] + -[1e3] + -4e3 + -8e3 + -1e11).replace(/[018]/g, b);\n }\n return b();\n}\n\n/**\n * Return whether a given value is a power of two\n * @private\n */\nexport function isPowerOfTwo(value: number): boolean {\n return (Math.log(value) / Math.LN2) % 1 === 0;\n}\n\n/**\n * Return the next power of two, or the input value if already a power of two\n * @private\n */\nexport function nextPowerOfTwo(value: number): number {\n if (value <= 1) return 1;\n return Math.pow(2, Math.ceil(Math.log(value) / Math.LN2));\n}\n\n/**\n * Return the previous power of two, or the input value if already a power of two\n * @private\n */\nexport function prevPowerOfTwo(value: number): number {\n if (value <= 1) return 1;\n return Math.pow(2, Math.floor(Math.log(value) / Math.LN2));\n}\n\n/**\n * Validate a string to match UUID(v4) of the\n * form: xxxxxxxx-xxxx-4xxx-[89ab]xxx-xxxxxxxxxxxx\n * @param str string to validate.\n * @private\n */\nexport function validateUuid(str: ?string): boolean {\n return str ? /^[0-9a-f]{8}-[0-9a-f]{4}-[4][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i.test(str) : false;\n}\n\n/**\n * Given an array of member function names as strings, replace all of them\n * with bound versions that will always refer to `context` as `this`. This\n * is useful for classes where otherwise event bindings would reassign\n * `this` to the evented object or some other value: this lets you ensure\n * the `this` value always.\n *\n * @param fns list of member function names\n * @param context the context value\n * @example\n * function MyClass() {\n * bindAll(['ontimer'], this);\n * this.name = 'Tom';\n * }\n * MyClass.prototype.ontimer = function() {\n * alert(this.name);\n * };\n * var myClass = new MyClass();\n * setTimeout(myClass.ontimer, 100);\n * @private\n */\nexport function bindAll(fns: Array, context: Object): void {\n fns.forEach((fn) => {\n if (!context[fn]) { return; }\n context[fn] = context[fn].bind(context);\n });\n}\n\n/**\n * Determine if a string ends with a particular substring\n *\n * @private\n */\nexport function endsWith(string: string, suffix: string): boolean {\n return string.indexOf(suffix, string.length - suffix.length) !== -1;\n}\n\n/**\n * Create an object by mapping all the values of an existing object while\n * preserving their keys.\n *\n * @private\n */\n// $FlowFixMe[missing-this-annot]\nexport function mapObject(input: Object, iterator: Function, context?: Object): Object {\n const output = {};\n for (const key in input) {\n output[key] = iterator.call(context || this, input[key], key, input);\n }\n return output;\n}\n\n/**\n * Create an object by filtering out values of an existing object.\n *\n * @private\n */\n// $FlowFixMe[missing-this-annot]\nexport function filterObject(input: Object, iterator: Function, context?: Object): Object {\n const output = {};\n for (const key in input) {\n if (iterator.call(context || this, input[key], key, input)) {\n output[key] = input[key];\n }\n }\n return output;\n}\n\nimport deepEqual from '../style-spec/util/deep_equal.js';\nexport {deepEqual};\n\n/**\n * Deeply clones two objects.\n *\n * @private\n */\nexport function clone(input: T): T {\n if (Array.isArray(input)) {\n return ((input.map(clone): any): T);\n } else if (typeof input === 'object' && input) {\n return ((mapObject(input, clone): any): T);\n } else {\n return input;\n }\n}\n\n/**\n * Maps a value from a range between [min, max] to the range [outMin, outMax]\n *\n * @private\n */\nexport function mapValue(value: number, min: number, max: number, outMin: number, outMax: number): number {\n return clamp((value - min) / (max - min) * (outMax - outMin) + outMin, outMin, outMax);\n}\n\n/**\n * Check if two arrays have at least one common element.\n *\n * @private\n */\nexport function arraysIntersect(a: Array, b: Array): boolean {\n for (let l = 0; l < a.length; l++) {\n if (b.indexOf(a[l]) >= 0) return true;\n }\n return false;\n}\n\n/**\n * Print a warning message to the console and ensure duplicate warning messages\n * are not printed.\n *\n * @private\n */\nconst warnOnceHistory: {[key: string]: boolean} = {};\n\nexport function warnOnce(message: string): void {\n if (!warnOnceHistory[message]) {\n // console isn't defined in some WebWorkers, see #2558\n if (typeof console !== \"undefined\") console.warn(message);\n warnOnceHistory[message] = true;\n }\n}\n\n/**\n * Indicates if the provided Points are in a counter clockwise (true) or clockwise (false) order\n *\n * @private\n * @returns true for a counter clockwise set of points\n */\n// http://bryceboe.com/2006/10/23/line-segment-intersection-algorithm/\nexport function isCounterClockwise(a: Point, b: Point, c: Point): boolean {\n return (c.y - a.y) * (b.x - a.x) > (b.y - a.y) * (c.x - a.x);\n}\n\n/**\n * Returns the signed area for the polygon ring. Postive areas are exterior rings and\n * have a clockwise winding. Negative areas are interior rings and have a counter clockwise\n * ordering.\n *\n * @private\n * @param ring Exterior or interior ring\n */\nexport function calculateSignedArea(ring: Array): number {\n let sum = 0;\n for (let i = 0, len = ring.length, j = len - 1, p1, p2; i < len; j = i++) {\n p1 = ring[i];\n p2 = ring[j];\n sum += (p2.x - p1.x) * (p1.y + p2.y);\n }\n return sum;\n}\n\nexport type Position = {\n x: number,\n y: number,\n z: number,\n azimuthal: number,\n polar: number,\n};\n\nexport type Direction = {\n x: number,\n y: number,\n z: number\n};\n\n/**\n * Converts spherical coordinates to cartesian position coordinates.\n *\n * @private\n * @param spherical Spherical coordinates, in [radial, azimuthal, polar]\n * @return Position cartesian coordinates\n */\nexport function sphericalPositionToCartesian([r, azimuthal, polar]: [number, number, number]): Position {\n // We abstract \"north\"/\"up\" (compass-wise) to be 0\u00B0 when really this is 90\u00B0 (\u03C0/2):\n // correct for that here\n const a = degToRad(azimuthal + 90), p = degToRad(polar);\n\n return {\n x: r * Math.cos(a) * Math.sin(p),\n y: r * Math.sin(a) * Math.sin(p),\n z: r * Math.cos(p),\n azimuthal, polar\n };\n}\n\n/**\n * Converts spherical direction to cartesian coordinates.\n *\n * @private\n * @param spherical Spherical direction, in [azimuthal, polar]\n * @return Direction cartesian direction\n */\nexport function sphericalDirectionToCartesian([azimuthal, polar]: [number, number, number]): Direction {\n const position = sphericalPositionToCartesian([1.0, azimuthal, polar]);\n\n return {\n x: position.x,\n y: position.y,\n z: position.z\n };\n}\n\nexport function cartesianPositionToSpherical(x: number, y: number, z: number): [number, number, number] {\n const radial = Math.sqrt(x * x + y * y + z * z);\n const polar = radial > 0.0 ? Math.acos(z / radial) * RAD_TO_DEG : 0.0;\n // Domain error may occur if x && y are both 0.0\n let azimuthal = (x !== 0.0 || y !== 0.0) ? Math.atan2(-y, -x) * RAD_TO_DEG + 90.0 : 0.0;\n\n if (azimuthal < 0.0) {\n azimuthal += 360.0;\n }\n\n return [radial, azimuthal, polar];\n}\n\n/* global WorkerGlobalScope */\n/**\n * Returns true if run in the web-worker context.\n *\n * @private\n * @returns {boolean}\n */\nexport function isWorker(): boolean {\n return typeof WorkerGlobalScope !== 'undefined' && typeof self !== 'undefined' &&\n self instanceof WorkerGlobalScope;\n}\n\n/**\n * Parses data from 'Cache-Control' headers.\n *\n * @private\n * @param cacheControl Value of 'Cache-Control' header\n * @return object containing parsed header info.\n */\n\nexport function parseCacheControl(cacheControl: string): Object {\n // Taken from [Wreck](https://github.com/hapijs/wreck)\n const re = /(?:^|(?:\\s*\\,\\s*))([^\\x00-\\x20\\(\\)<>@\\,;\\:\\\\\"\\/\\[\\]\\?\\=\\{\\}\\x7F]+)(?:\\=(?:([^\\x00-\\x20\\(\\)<>@\\,;\\:\\\\\"\\/\\[\\]\\?\\=\\{\\}\\x7F]+)|(?:\\\"((?:[^\"\\\\]|\\\\.)*)\\\")))?/g;\n\n const header = {};\n cacheControl.replace(re, ($0, $1, $2, $3) => {\n const value = $2 || $3;\n header[$1] = value ? value.toLowerCase() : true;\n return '';\n });\n\n if (header['max-age']) {\n const maxAge = parseInt(header['max-age'], 10);\n if (isNaN(maxAge)) delete header['max-age'];\n else header['max-age'] = maxAge;\n }\n\n return header;\n}\n\nlet _isSafari = null;\n\nexport function _resetSafariCheckForTest() {\n _isSafari = null;\n}\n\n/**\n * Returns true when run in WebKit derived browsers.\n * This is used as a workaround for a memory leak in Safari caused by using Transferable objects to\n * transfer data between WebWorkers and the main thread.\n * https://github.com/mapbox/mapbox-gl-js/issues/8771\n *\n * This should be removed once the underlying Safari issue is fixed.\n *\n * @private\n * @param scope {WindowOrWorkerGlobalScope} Since this function is used both on the main thread and WebWorker context,\n * let the calling scope pass in the global scope object.\n * @returns {boolean}\n */\nexport function isSafari(scope: any): boolean {\n if (_isSafari == null) {\n const userAgent = scope.navigator ? scope.navigator.userAgent : null;\n _isSafari = !!scope.safari ||\n !!(userAgent && (/\\b(iPad|iPhone|iPod)\\b/.test(userAgent) || (!!userAgent.match('Safari') && !userAgent.match('Chrome'))));\n }\n return _isSafari;\n}\n\nexport function isSafariWithAntialiasingBug(scope: any): ?boolean {\n const userAgent = scope.navigator ? scope.navigator.userAgent : null;\n if (!isSafari(scope)) return false;\n // 15.4 is known to be buggy.\n // 15.5 may or may not include the fix. Mark it as buggy to be on the safe side.\n return userAgent && (userAgent.match('Version/15.4') || userAgent.match('Version/15.5') || userAgent.match(/CPU (OS|iPhone OS) (15_4|15_5) like Mac OS X/));\n}\n\nexport function isFullscreen(): boolean {\n return !!document.fullscreenElement || !!(document: any).webkitFullscreenElement;\n}\n\nexport function storageAvailable(type: string): boolean {\n try {\n const storage = self[type];\n storage.setItem('_mapbox_test_', 1);\n storage.removeItem('_mapbox_test_');\n return true;\n } catch (e) {\n return false;\n }\n}\n\n// The following methods are from https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/Base64_encoding_and_decoding#The_Unicode_Problem\n//Unicode compliant base64 encoder for strings\nexport function b64EncodeUnicode(str: string): string {\n return btoa(\n encodeURIComponent(str).replace(/%([0-9A-F]{2})/g,\n (match, p1) => {\n return String.fromCharCode(Number('0x' + p1)); //eslint-disable-line\n }\n )\n );\n}\n\n// Unicode compliant decoder for base64-encoded strings\nexport function b64DecodeUnicode(str: string): string {\n return decodeURIComponent(atob(str).split('').map((c) => {\n return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2); //eslint-disable-line\n }).join(''));\n}\n\nexport function base64DecToArr(sBase64: string): Uint8Array {\n const str = atob(sBase64);\n const arr = new Uint8Array(str.length);\n for (let i = 0; i < str.length; i++) arr[i] = str.codePointAt(i);\n return arr;\n}\n\nexport function getColumn(matrix: Mat4, col: number): Vec4 {\n return [matrix[col * 4], matrix[col * 4 + 1], matrix[col * 4 + 2], matrix[col * 4 + 3]];\n}\n\nexport function setColumn(matrix: Mat4, col: number, values: Vec4) {\n matrix[col * 4 + 0] = values[0];\n matrix[col * 4 + 1] = values[1];\n matrix[col * 4 + 2] = values[2];\n matrix[col * 4 + 3] = values[3];\n}\n\nexport function sRGBToLinearAndScale(v: [number, number, number, number], s: number): [number, number, number] {\n return [\n Math.pow(v[0], 2.2) * s,\n Math.pow(v[1], 2.2) * s,\n Math.pow(v[2], 2.2) * s\n ];\n}\n\nexport function linearVec3TosRGB(v: [number, number, number]): [number, number, number] {\n return [\n Math.pow(v[0], 1.0 / 2.2),\n Math.pow(v[1], 1.0 / 2.2),\n Math.pow(v[2], 1.0 / 2.2)\n ];\n}\n\nexport function lowerBound(array: number[], startIndex: number, finishIndex: number, target: number): number {\n while (startIndex < finishIndex) {\n const middleIndex = (startIndex + finishIndex) >> 1;\n\n if (array[middleIndex] < target) {\n startIndex = middleIndex + 1;\n } else {\n finishIndex = middleIndex;\n }\n }\n\n return startIndex;\n}\n\nexport function upperBound(array: number[], startIndex: number, finishIndex: number, target: number): number {\n while (startIndex < finishIndex) {\n const middleIndex = (startIndex + finishIndex) >> 1;\n\n if (array[middleIndex] <= target) {\n startIndex = middleIndex + 1;\n } else {\n finishIndex = middleIndex;\n }\n }\n\n return startIndex;\n}\n\nexport function contrastFactor(contrast: number): number {\n return contrast > 0 ?\n 1 / (1.001 - contrast) :\n 1 + contrast;\n}\n\nexport function saturationFactor(saturation: number): number {\n return saturation > 0 ?\n 1 - 1 / (1.001 - saturation) :\n -saturation;\n}\n\n/**\n * Given the inputs creates a matrix that when applied to a color can\n * change its saturation, contrast and brightness levels.\n * This results in the same behaviour that happens in raster.fragment.glsl\n *\n * @param saturation Saturation level ranging from -1 to 1.\n * @param contrast Contrast level ranging from -1 to 1.\n * @param brightnessMin Minimum brightness ranging from 0 to 1.\n * @param brightnessMax Maximum brightness ranging from 0 to 1.\n * @returns Matrix that adjusts saturation, contrast and brightness of a color.\n * @private\n */\nexport function computeColorAdjustmentMatrix(saturation: number, contrast: number, brightnessMin: number, brightnessMax: number): Float32Array {\n saturation = saturationFactor(saturation);\n contrast = contrastFactor(contrast);\n\n const m = mat4.create();\n\n /*hueAngle *= Math.PI / 180;\n const s = Math.sin(hueAngle);\n const c = Math.cos(hueAngle);\n const x = (2 * c + 1) / 3;\n const y = (-c - Math.sqrt(3) * s + 1) / 3;\n const z = (-c + Math.sqrt(3) * s + 1) / 3;\n const hueMatrix = [\n x, z, y, 0,\n y, x, z, 0,\n z, y, x, 0,\n 0, 0, 0, 1\n ];*/\n\n const sa = saturation / 3.0;\n const sb = 1.0 - 2.0 * sa;\n const saturationMatrix = [\n sb, sa, sa, 0.0,\n sa, sb, sa, 0.0,\n sa, sa, sb, 0.0,\n 0.0, 0.0, 0.0, 1.0\n ];\n\n const cs = 0.5 - 0.5 * contrast;\n const contrastMatrix = [\n contrast, 0.0, 0.0, 0.0,\n 0.0, contrast, 0.0, 0.0,\n 0.0, 0.0, contrast, 0.0,\n cs, cs, cs, 1.0\n ];\n\n const hl = brightnessMax - brightnessMin;\n const brightnessMatrix = [\n hl, 0.0, 0.0, 0.0,\n 0.0, hl, 0.0, 0.0,\n 0.0, 0.0, hl, 0.0,\n brightnessMin, brightnessMin, brightnessMin, 1.0\n ];\n\n mat4.multiply(m, brightnessMatrix, contrastMatrix);\n mat4.multiply(m, m, saturationMatrix);\n // mat4.multiply(m, m, hueMatrix);\n\n return m;\n}\n", "// @flow strict\nlet supportsOffscreenCanvas: ?boolean;\n\nexport default function offscreenCanvasSupported(): boolean {\n if (supportsOffscreenCanvas == null) {\n supportsOffscreenCanvas = self.OffscreenCanvas &&\n new OffscreenCanvas(1, 1).getContext('2d') &&\n typeof self.createImageBitmap === 'function';\n }\n\n return supportsOffscreenCanvas;\n}\n", "// @flow strict\nimport assert from 'assert';\nimport offscreenCanvasSupported from './offscreen_canvas_supported.js';\nimport type {Cancelable} from '../types/cancelable.js';\n\nlet linkEl;\n\nlet reducedMotionQuery: MediaQueryList;\n\nlet stubTime: number | void;\n\nlet canvas;\n\nlet hasCanvasFingerprintNoise;\n\n/**\n * @private\n */\nconst exported = {\n /**\n * Returns either performance.now() or a value set by setNow.\n * @returns {number} Time value in milliseconds.\n */\n now(): number {\n if (stubTime !== undefined) {\n return stubTime;\n }\n return performance.now();\n },\n setNow(time: number) {\n stubTime = time;\n },\n\n restoreNow() {\n stubTime = undefined;\n },\n\n frame(fn: (paintStartTimestamp: number) => void): Cancelable {\n const frame = requestAnimationFrame(fn);\n return {cancel: () => cancelAnimationFrame(frame)};\n },\n\n getImageData(img: CanvasImageSource, padding?: number = 0): ImageData {\n const {width, height} = img;\n\n if (!canvas) {\n canvas = document.createElement('canvas');\n }\n\n const context = canvas.getContext('2d', {willReadFrequently: true});\n if (!context) {\n throw new Error('failed to create canvas 2d context');\n }\n\n if (width > canvas.width || height > canvas.height) {\n canvas.width = width;\n canvas.height = height;\n }\n\n context.clearRect(-padding, -padding, width + 2 * padding, height + 2 * padding);\n context.drawImage(img, 0, 0, width, height);\n return context.getImageData(-padding, -padding, width + 2 * padding, height + 2 * padding);\n },\n\n resolveURL(path: string): string {\n if (!linkEl) linkEl = document.createElement('a');\n linkEl.href = path;\n return linkEl.href;\n },\n\n get devicePixelRatio(): number { return window.devicePixelRatio; },\n get prefersReducedMotion(): boolean {\n if (!window.matchMedia) return false;\n // Lazily initialize media query.\n if (reducedMotionQuery == null) {\n reducedMotionQuery = window.matchMedia('(prefers-reduced-motion: reduce)');\n }\n return reducedMotionQuery.matches;\n },\n\n /**\n * Returns true if the browser has OffscreenCanvas support and\n * adds noise to Canvas2D operations used for image decoding to prevent fingerprinting.\n */\n hasCanvasFingerprintNoise(): boolean {\n if (hasCanvasFingerprintNoise !== undefined) {\n return hasCanvasFingerprintNoise;\n }\n\n if (!offscreenCanvasSupported()) {\n hasCanvasFingerprintNoise = false;\n return false;\n }\n\n assert(self.OffscreenCanvas, 'OffscreenCanvas is not supported');\n\n const offscreenCanvas = new OffscreenCanvas(255 / 3, 1);\n // $FlowFixMe[extra-arg] probably fixed in later versions of Flow\n const offscreenCanvasContext = offscreenCanvas.getContext('2d', {willReadFrequently: true});\n let inc = 0;\n // getImageData is lossy with premultiplied alpha.\n for (let i = 0; i < offscreenCanvas.width; ++i) {\n offscreenCanvasContext.fillStyle = `rgba(${inc++},${inc++},${inc++}, 255)`;\n offscreenCanvasContext.fillRect(i, 0, 1, 1);\n }\n const readData = offscreenCanvasContext.getImageData(0, 0, offscreenCanvas.width, offscreenCanvas.height);\n inc = 0;\n for (let i = 0; i < readData.data.length; ++i) {\n if (i % 4 !== 3 && inc++ !== readData.data[i]) {\n hasCanvasFingerprintNoise = true;\n return true;\n }\n }\n hasCanvasFingerprintNoise = false;\n return false;\n }\n};\n\nexport default exported;\n", "// @flow\n\nexport function setQueryParameters(url: string, params: {[string]: string}): string {\n const paramStart = url.indexOf('?');\n if (paramStart < 0) return `${url}?${new URLSearchParams(params).toString()}`;\n\n const searchParams = new URLSearchParams(url.slice(paramStart));\n for (const key in params) {\n searchParams.set(key, params[key]);\n }\n\n return `${url.slice(0, paramStart)}?${searchParams.toString()}`;\n}\n\ntype StripQueryParameters = {\n persistentParams: string[]\n}\n\nexport function stripQueryParameters(url: string, params?: StripQueryParameters = {persistentParams: []}): string {\n const paramStart = url.indexOf('?');\n if (paramStart < 0) return url;\n\n const nextParams = new URLSearchParams();\n const searchParams = new URLSearchParams(url.slice(paramStart));\n for (const param of params.persistentParams) {\n const value = searchParams.get(param);\n if (value) nextParams.set(param, value);\n }\n\n const nextParamsString = nextParams.toString();\n\n return `${url.slice(0, paramStart)}${nextParamsString.length > 0 ? `?${nextParamsString}` : ''}`;\n}\n", "// @flow\n\nimport {warnOnce, parseCacheControl} from './util.js';\nimport {stripQueryParameters, setQueryParameters} from './url.js';\n\nimport type Dispatcher from './dispatcher.js';\n\nconst CACHE_NAME = 'mapbox-tiles';\nlet cacheLimit = 500; // 50MB / (100KB/tile) ~= 500 tiles\nlet cacheCheckThreshold = 50;\n\nconst MIN_TIME_UNTIL_EXPIRY = 1000 * 60 * 7; // 7 minutes. Skip caching tiles with a short enough max age.\n\nexport type ResponseOptions = {\n status: number,\n statusText: string,\n headers: Headers\n};\n\n// We're using a global shared cache object. Normally, requesting ad-hoc Cache objects is fine, but\n// Safari has a memory leak in which it fails to release memory when requesting keys() from a Cache\n// object. See https://bugs.webkit.org/show_bug.cgi?id=203991 for more information.\nlet sharedCache: ?Promise;\n\nfunction getCaches() {\n try {\n return caches;\n } catch (e) {\n //