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Animator.js.html
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<!DOCTYPE html><html lang="en" style="font-size:16px"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><link rel="icon" href="../favicon.ico"><title>Source: Animator.js</title><!--[if lt IE 9]>
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<![endif]--><script src="scripts/third-party/hljs.js" defer="defer"></script><script src="scripts/third-party/hljs-line-num.js" defer="defer"></script><script src="scripts/third-party/popper.js" defer="defer"></script><script src="scripts/third-party/tippy.js" defer="defer"></script><script src="scripts/third-party/tocbot.min.js"></script><script>var baseURL="/",locationPathname="";baseURL=(locationPathname=document.location.pathname).substr(0,locationPathname.lastIndexOf("/")+1)</script><link rel="stylesheet" href="styles/clean-jsdoc-theme.min.css"><svg aria-hidden="true" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="display:none"><defs><symbol id="copy-icon" viewbox="0 0 488.3 488.3"><g><path d="M314.25,85.4h-227c-21.3,0-38.6,17.3-38.6,38.6v325.7c0,21.3,17.3,38.6,38.6,38.6h227c21.3,0,38.6-17.3,38.6-38.6V124 C352.75,102.7,335.45,85.4,314.25,85.4z M325.75,449.6c0,6.4-5.2,11.6-11.6,11.6h-227c-6.4,0-11.6-5.2-11.6-11.6V124 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aria-label="change-font-size"><svg><use xlink:href="#font-size-icon"></use></svg></button></div></div><nav></nav></nav></div><div class="toc-container"><div class="toc-content"><span class="bold">On this page</span><div id="eed4d2a0bfd64539bb9df78095dec881"></div></div></div><div class="body-wrapper"><div class="main-content"><div class="main-wrapper"><section id="source-page" class="source-page"><header><h1 id="title" class="has-anchor">Animator.js</h1></header><article><pre class="prettyprint source lang-js"><code>import Stats from '../vendor/stats.js'
/**
* Class Animator controls running of a function.
*/
class Animator {
/**
* Sets parameters, then calls start().
* To have the model not start immediately do:
* - const anim = new Animator(\<args>).stop()
*
* @param {Function} fcn The function the animator runs and controls
* @param {number} steps How many steps to run. Default is -1, forever
* @param {number} fps Max frames/second to run. Default is 30
*/
constructor(fcn, steps = -1, fps = 30) {
Object.assign(this, { fcn, steps, fps, ticks: 0 })
this.stats = null
this.timeoutID = null
this.idle = null
this.idleFps = null
this.idleID = null
this.start()
}
/**
* Starts the model running
*
* @returns The animator, allows chaining
*/
start() {
// if (this.timeoutID) return // avoid multiple starts
this.clearIDs()
this.timeoutID = setInterval(() => this.step(), 1000 / this.fps)
// if (this.idleID) this.idleID = clearInterval(this.idleID)
return this // chaining off ctor
}
/**
* Stops the model running
*
* @returns The animator, allows chaining
*/
stop() {
// if (this.timeoutID) this.timeoutID = clearInterval(this.timeoutID)
// if (this.idleID) this.idleID = clearInterval(this.idleID)
this.clearIDs()
if (this.idle)
this.idleID = setInterval(() => this.idle(), 1000 / this.idleFps)
return this // chaining off ctor
}
step() {
if (this.ticks === this.steps) return this.stop()
// this.ticks++ // inside fcn anim.ticks starts at one
this.fcn()
this.ticks++ // inside fcn anim.ticks starts at zero
if (this.stats) this.stats.update()
return this // chaining off ctor
}
clearIDs() {
if (this.timeoutID) this.timeoutID = clearInterval(this.timeoutID)
if (this.idleID) this.idleID = clearInterval(this.idleID)
}
isRunning() {
return this.timeoutID != null
}
startStats(statsPosition = 'top:0px;left:0px', parentID = document.body) {
if (this.stats) {
this.stopStats()
}
const stats = new Stats()
const parent =
typeof parentID === 'string'
? document.getElementById(parentID)
: parentID
if (parent != document.body) {
parent.style.position = 'relative'
}
parent.appendChild(stats.dom)
stats.dom.style.cssText = statsPosition // 'top:10px;right:20px;'
stats.dom.style.position = 'absolute'
this.stats = stats
return this // chaining off ctor
}
stopStats() {
const stats = this.stats
if (stats && stats.dom && stats.dom.parentNode) {
stats.dom.parentNode.removeChild(stats.dom)
} else {
console.warn('Stats panel not found or already removed.')
}
this.stats = null
return this // chaining off ctor
}
// startStats(left = '0px') {
// if (this.stats) return console.log('startStats: already running')
// this.stats = new Stats()
// document.body.appendChild(this.stats.dom)
// this.stats.dom.style.left = left
// return this // chaining off ctor
// }
setFps(fps) {
if (fps <= 0) {
console.log('fps must be > 0, using 0.00000001')
fps = 0.00000001
}
this.reset(this.steps, fps)
}
setSteps(steps) {
this.reset(steps, this.fps)
}
// set the new steps & fps, restStart if currently running
reset(steps = this.steps, fps = this.fps) {
const wasRunning = this.isRunning()
if (wasRunning) this.stop()
this.steps = steps
this.ticks = 0
this.fps = fps
if (wasRunning) this.start()
}
restart(model, view, ctrl = undefined) {
model.reset()
// window.ui.view.reset()
this.reset()
view.draw()
if (ctrl) ctrl.reset()
}
// stop if running, start otherwise
// if starting and steps === 0, reset with steps = -1, forever.
toggle() {
// if (this.timeoutID) this.stop()
if (this.isRunning()) this.stop()
// else if (this.steps === 0) this.reset()
else this.start()
}
// call the fcn once. stops if currently running
once() {
this.stop()
this.step()
}
setIdle(fcn, fps = 4) {
this.idle = fcn
this.idleFps = fps
}
}
export default Animator
</code></pre></article></section><footer class="footer" id="PeOAagUepe"><div class="wrapper">AgentScript version: 0.10.20 using clean-jsdoc-theme</div></footer></div></div></div><div class="search-container" id="PkfLWpAbet" style="display:none"><div class="wrapper" id="iCxFxjkHbP"><button class="icon-button search-close-button" id="VjLlGakifb" aria-label="close search"><svg><use xlink:href="#close-icon"></use></svg></button><div class="search-box-c"><svg><use xlink:href="#search-icon"></use></svg> <input type="text" id="vpcKVYIppa" class="search-input" placeholder="Search..." autofocus></div><div class="search-result-c" id="fWwVHRuDuN"><span class="search-result-c-text">Type anything to view search result</span></div></div></div><div class="mobile-menu-icon-container"><button class="icon-button" id="mobile-menu" data-isopen="false" aria-label="menu"><svg><use xlink:href="#menu-icon"></use></svg></button></div><div id="mobile-sidebar" class="mobile-sidebar-container"><div class="mobile-sidebar-wrapper"><a href="/" class="sidebar-title sidebar-title-anchor">Home</a><div class="mobile-nav-links"><div class="navbar-item"><a id="github-mobile" href="https://github.com/backspaces/agentscript" target="">Github</a></div><div class="navbar-item"><a id="AgentScript-mobile" href="https://code.agentscript.org" target="">AgentScript.org</a></div><div class="navbar-item"><a id="npm-mobile" href="https://www.npmjs.com/package/agentscript" target="">npm</a></div><div class="navbar-item"><a id="unpkg-mobile" href="https://unpkg.com/browse/agentscript/" target="">unpkg</a></div></div><div class="mobile-sidebar-items-c"><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-classes"><div>Classes</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="AgentArray.html">AgentArray</a></div><div class="sidebar-section-children"><a href="AgentList.html">AgentList</a></div><div class="sidebar-section-children"><a href="AgentSet.html">AgentSet</a></div><div class="sidebar-section-children"><a href="Animator.html">Animator</a></div><div class="sidebar-section-children"><a href="DataSet.html">DataSet</a></div><div class="sidebar-section-children"><a href="GUI.html">GUI</a></div><div class="sidebar-section-children"><a href="GeoDataSet.html">GeoDataSet</a></div><div class="sidebar-section-children"><a href="Keyboard.html">Keyboard</a></div><div class="sidebar-section-children"><a href="Link.html">Link</a></div><div class="sidebar-section-children"><a href="Links.html">Links</a></div><div class="sidebar-section-children"><a href="Model.html">Model</a></div><div class="sidebar-section-children"><a href="Model3D.html">Model3D</a></div><div class="sidebar-section-children"><a href="Mouse.html">Mouse</a></div><div class="sidebar-section-children"><a href="Patch.html">Patch</a></div><div class="sidebar-section-children"><a href="Patches.html">Patches</a></div><div class="sidebar-section-children"><a href="RGBDataSet.html">RGBDataSet</a></div><div class="sidebar-section-children"><a href="ThreeDraw.html">ThreeDraw</a></div><div class="sidebar-section-children"><a href="Turtle.html">Turtle</a></div><div class="sidebar-section-children"><a href="Turtle3D.html">Turtle3D</a></div><div class="sidebar-section-children"><a href="Turtles.html">Turtles</a></div><div class="sidebar-section-children"><a href="TwoDraw.html">TwoDraw</a></div><div class="sidebar-section-children"><a href="World.html">World</a></div></div><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-modules"><div>Modules</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="module-src_geojson.html">src/geojson</a></div><div class="sidebar-section-children"><a href="module-src_gis.html">src/gis</a></div><div class="sidebar-section-children"><a href="module-src_utils.html">src/utils</a></div></div><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-tutorials"><div>Tutorials</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="tutorial-1 - 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