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proton-engine

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Proton is a simple and powerful javascript particle animation engine.

drawcall.github.io/Proton

drawcall/Proton

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/*! * Proton v7.1.5 * https://github.com/drawcall/Proton * * Copyright 2013-2025, drawcall * Licensed under the MIT license * http://www.opensource.org/licenses/mit-license * */ this.Proton=function(){"use strict";function t(t,e){for(var i=0;i<e.length;i++){var r=e[i];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(t,n(r.key),r)}}function e(t,e){t.prototype=Object.create(e.prototype),t.prototype.constructor=t,i(t,e)}function i(t,e){return i=Object.setPrototypeOf?Object.setPrototypeOf.bind():function(t,e){return t.__proto__=e,t},i(t,e)}function n(t){var e=function(t,e){if("object"!=typeof t||!t)return t;var i=t[Symbol.toPrimitive];if(void 0!==i){var n=i.call(t,e||"default");if("object"!=typeof n)return n;throw new TypeError("@@toPrimitive must return a primitive value.")}return("string"===e?String:Number)(t)}(t,"string");return"symbol"==typeof e?e:e+""}var r=function(t){--t;for(var e=1;e<32;e<<=1)t|=t>>e;return t+1},a=function(t,e){return[1,0,0,0,1,0,t,e,1]},s=function(t){var e=Math.cos(t),i=Math.sin(t);return[e,-i,0,i,e,0,0,0,1]},o=function(t,e){return[t,0,0,0,e,0,0,0,1]},h=function(t,e){var i=t[0],n=t[1],r=t[2],a=t[3],s=t[4],o=t[5],h=t[6],l=t[7],c=t[8],u=e[0],d=e[1],p=e[2],f=e[3],g=e[4],y=e[5],m=e[6],v=e[7],b=e[8];return[i*u+n*f+r*m,i*d+n*g+r*v,i*p+n*y+r*b,a*u+s*f+o*m,a*d+s*g+o*v,a*p+s*y+o*b,h*u+l*f+c*m,h*d+l*g+c*v,h*p+l*y+c*b]},l={createCanvas:function(t,e,i,n){void 0===n&&(n="absolute");var r=document.createElement("canvas");return r.id=t,r.width=e,r.height=i,r.style.opacity=0,r.style.position=n,this.transform(r,-500,-500,0,0),r},createDiv:function(t,e,i){var n=document.createElement("div");return n.id=t,n.style.position="absolute",this.resize(n,e,i),n},resize:function(t,e,i){t.style.width=e+"px",t.style.height=i+"px",t.style.marginLeft=-e/2+"px",t.style.marginTop=-i/2+"px"},transform:function(t,e,i,n,r){t.style.willChange="transform";var a="translate("+e+"px, "+i+"px) scale("+n+") 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e||(e="PUID_"+this._index++,this._cache[e]=t,e)},getIdFromCache:function(t){var e,i;for(i in this._cache){if((e=this._cache[i])===t)return i;if(this.isBody(e,t)&&e.src===t.src)return i}return null},isBody:function(t,e){return"object"==typeof t&&"object"==typeof e&&t.isInner&&e.isInner},getTarget:function(t){return this._cache[t]}},b=function(){function t(t){this.total=0,this.cache={}}var e=t.prototype;return e.get=function(t,e,i){var n;return i=i||t.__puid||v.getId(t),(n=this.cache[i]&&this.cache[i].length>0?this.cache[i].pop():this.createOrClone(t,e)).__puid=t.__puid||i,n},e.expire=function(t){return this.getCache(t.__puid).push(t)},e.createOrClone=function(t,e){return this.total++,this.create?this.create(t,e):"function"==typeof t?y.classApply(t,e):t.clone()},e.getCount=function(){var t=0;for(var e in this.cache)t+=this.cache[e].length;return t++},e.destroy=function(){for(var t in this.cache)this.cache[t].length=0,delete this.cache[t]},e.getCache=function(t){return void 0===t&&(t="default"),this.cache[t]||(this.cache[t]=[]),this.cache[t]},t}(),x=function(){function t(t){this.proton=t,this.container=null,this.type=1,this.emitterIndex=0,this.rendererIndex=0}var e=t.prototype;return e.update=function(t,e){this.add(t,e);var i=this.getEmitter(),n=this.getRenderer(),r="";switch(this.type){case 2:r+="emitter:"+this.proton.emitters.length+"<br>",i&&(r+="em speed:"+i.emitSpeed+"<br>"),i&&(r+="pos:"+this.getEmitterPos(i));break;case 3:i&&(r+="initializes:"+i.initializes.length+"<br>"),i&&(r+='<span style="display:inline-block;">'+this.concatArr(i.initializes)+"</span><br>"),i&&(r+="behaviours:"+i.behaviours.length+"<br>"),i&&(r+='<span style="display:inline-block;">'+this.concatArr(i.behaviours)+"</span><br>");break;case 4:n&&(r+=n.name+"<br>"),n&&(r+="body:"+this.getCreatedNumber(n)+"<br>");break;default:r+="particles:"+this.proton.getCount()+"<br>",r+="pool:"+this.proton.pool.getCount()+"<br>",r+="total:"+this.proton.pool.total}this.container.innerHTML=r},e.add=function(t,e){var i=this;if(!this.container){var n,r;switch(this.type=1,this.container=document.createElement("div"),this.container.style.cssText=["position:absolute;bottom:0px;left:0;cursor:pointer;","opacity:0.9;z-index:10000;padding:10px;font-size:12px;font-family:Helvetica,Arial,sans-serif;","width:120px;height:50px;background-color:#002;color:#0ff;"].join(""),this.container.addEventListener("click",(function(t){i.type++,i.type>4&&(i.type=1)}),!1),t){case 2:n="#201",r="#f08";break;case 3:n="#020",r="#0f0";break;default:n="#002",r="#0ff"}this.container.style["background-color"]=n,this.container.style.color=r}this.container.parentNode||(e=e||this.body||document.body).appendChild(this.container)},e.getEmitter=function(){return this.proton.emitters[this.emitterIndex]},e.getRenderer=function(){return this.proton.renderers[this.rendererIndex]},e.concatArr=function(t){var e="";if(!t||!t.length)return e;for(var i=0;i<t.length;i++)e+=(t[i].name||"").substr(0,1)+".";return e},e.getCreatedNumber=function(t){return t.pool.total||t.cpool&&t.cpool.total||0},e.getEmitterPos=function(t){return Math.round(t.p.x)+","+Math.round(t.p.y)},e.destroy=function(){this.container&&this.container.parentNode&&(this.body||document.body).removeChild(this.container);this.proton=null,this.container=null},t}(),E=function(){function t(){this._listeners=null}t.bind=function(e){e.prototype.dispatchEvent=t.prototype.dispatchEvent,e.prototype.hasEventListener=t.prototype.hasEventListener,e.prototype.addEventListener=t.prototype.addEventListener,e.prototype.removeEventListener=t.prototype.removeEventListener,e.prototype.removeAllEventListeners=t.prototype.removeAllEventListeners};var e=t.prototype;return e.addEventListener=function(t,e){return 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this.randomAToB(t-e,t+e,i)},randomColor:function(){return"#"+("00000"+(16777216*Math.random()|0).toString(16)).slice(-6)},randomZone:function(t){},floor:function(t,e){void 0===e&&(e=4);var i=Math.pow(10,e);return Math.floor(t*i)/i},degreeTransform:function(t){return t*P/180},toColor16:function(t){return"#"+t.toString(16)}},R=function(){function t(t){this.type=t}var e=t.prototype;return e.calculate=function(t,e,i){this.eulerIntegrate(t,e,i)},e.eulerIntegrate=function(t,e,i){t.sleep||(t.old.p.copy(t.p),t.old.v.copy(t.v),t.a.multiplyScalar(1/t.mass),t.v.add(t.a.multiplyScalar(e)),t.p.add(t.old.v.multiplyScalar(e)),i&&t.v.multiplyScalar(i),t.a.clear())},t}(),_=function(){function e(t){this.emitters=[],this.renderers=[],this.time=0,this.now=0,this.then=0,this.elapsed=0,this.stats=new x(this),this.pool=new b(80),this.integrationType=y.initValue(t,e.EULER),this.integrator=new R(this.integrationType),this._fps="auto",this._interval=e.DEFAULT_INTERVAL}var i,n,r,a=e.prototype;return a.addRenderer=function(t){t.init(this),this.renderers.push(t)},a.removeRenderer=function(t){var e=this.renderers.indexOf(t);this.renderers.splice(e,1),t.remove(this)},a.addEmitter=function(t){this.emitters.push(t),t.parent=this,this.dispatchEvent(e.EMITTER_ADDED,t)},a.removeEmitter=function(t){var i=this.emitters.indexOf(t);this.emitters.splice(i,1),t.parent=null,this.dispatchEvent(e.EMITTER_REMOVED,t)},a.update=function(){"auto"===this._fps?(this.dispatchEvent(e.PROTON_UPDATE),e.USE_CLOCK?(this.then||(this.then=(new Date).getTime()),this.now=(new Date).getTime(),this.elapsed=.001*(this.now-this.then),this.amendChangeTabsBug(),this.elapsed>0&&this.emittersUpdate(this.elapsed),this.then=this.now):this.emittersUpdate(e.DEFAULT_INTERVAL),this.dispatchEvent(e.PROTON_UPDATE_AFTER)):(this.then||(this.then=(new Date).getTime()),this.now=(new Date).getTime(),this.elapsed=.001*(this.now-this.then),this.elapsed>this._interval&&(this.dispatchEvent(e.PROTON_UPDATE),this.emittersUpdate(this._interval),this.then=this.now-this.elapsed%this._interval*1e3,this.dispatchEvent(e.PROTON_UPDATE_AFTER)))},a.emittersUpdate=function(t){for(var e=this.emitters.length;e--;)this.emitters[e].update(t)},a.amendChangeTabsBug=function(){e.amendChangeTabsBug&&this.elapsed>.5&&(this.then=(new Date).getTime(),this.elapsed=0)},a.getCount=function(){for(var t=0,e=this.emitters.length;e--;)t+=this.emitters[e].particles.length;return t},a.getAllParticles=function(){for(var t=[],e=this.emitters.length;e--;)t=t.concat(this.emitters[e].particles);return t},a.destroyAllEmitters=function(){y.destroyAll(this.emitters)},a.destroy=function(t){var e=this;void 0===t&&(t=!1);var i=function(){e.time=0,e.then=0,e.pool.destroy(),e.stats.destroy(),y.destroyAll(e.emitters),y.destroyAll(e.renderers,e.getAllParticles()),e.integrator=null,e.renderers=null,e.emitters=null,e.stats=null,e.pool=null};t?setTimeout(i,200):i()},i=e,(n=[{key:"fps",get:function(){return this._fps},set:function(t){this._fps=t,this._interval="auto"===t?e.DEFAULT_INTERVAL:T.floor(1/t,7)}}])&&t(i.prototype,n),r&&t(i,r),Object.defineProperty(i,"prototype",{writable:!1}),i}();_.USE_CLOCK=!1,_.MEASURE=100,_.EULER="euler",_.RK2="runge-kutta2",_.PARTICLE_CREATED="PARTICLE_CREATED",_.PARTICLE_UPDATE="PARTICLE_UPDATE",_.PARTICLE_SLEEP="PARTICLE_SLEEP",_.PARTICLE_DEAD="PARTICLE_DEAD",_.EMITTER_ADDED="EMITTER_ADDED",_.EMITTER_REMOVED="EMITTER_REMOVED",_.PROTON_UPDATE="PROTON_UPDATE",_.PROTON_UPDATE_AFTER="PROTON_UPDATE_AFTER",_.DEFAULT_INTERVAL=.0167,_.amendChangeTabsBug=!0,E.bind(_);var w=function(){function t(t,e,i){void 0===t&&(t=255),void 0===e&&(e=255),void 0===i&&(i=255),this.r=t,this.g=e,this.b=i}return t.prototype.reset=function(){this.r=255,this.g=255,this.b=255},t}(),C=function(){function t(t,e,i){this.isArray=void 0,this.a=void 0,this.b=void 0,this.center=void 0,y.isArray(t)?(this.isArray=!0,this.a=t):(this.isArray=!1,this.a=y.initValue(t,1),this.b=y.initValue(e,this.a),this.center=y.initValue(i,!1))}return t.prototype.getValue=function(t){return void 0===t&&(t=!1),this.isArray?y.getRandFromArray(this.a):this.center?T.randomFloating(this.a,this.b,t):T.randomAToB(this.a,this.b,t)},t.setSpanValue=function(e,i,n){return e instanceof t?e:void 0===i?new t(e):void 0===n?new t(e,i):new t(e,i,n)},t.getSpanValue=function(e){return e instanceof t?e.getValue():e},t}(),I={hasProp:function(t,e){return!!t&&void 0!==t[e]},setProp:function(t,e){for(var i in e)t.hasOwnProperty(i)&&(t[i]=C.getSpanValue(e[i]));return t},setVectorVal:function(t,e){void 0===e&&(e=null),e&&(this.hasProp(e,"x")&&(t.p.x=e.x),this.hasProp(e,"y")&&(t.p.y=e.y),this.hasProp(e,"vx")&&(t.v.x=e.vx),this.hasProp(e,"vy")&&(t.v.y=e.vy),this.hasProp(e,"ax")&&(t.a.x=e.ax),this.hasProp(e,"ay")&&(t.a.y=e.ay),this.hasProp(e,"p")&&t.p.copy(e.p),this.hasProp(e,"v")&&t.v.copy(e.v),this.hasProp(e,"a")&&t.a.copy(e.a),this.hasProp(e,"position")&&t.p.copy(e.position),this.hasProp(e,"velocity")&&t.v.copy(e.velocity),this.hasProp(e,"accelerate")&&t.a.copy(e.accelerate))}},S={easeLinear:function(t){return t},easeInQuad:function(t){return Math.pow(t,2)},easeOutQuad:function(t){return-(Math.pow(t-1,2)-1)},easeInOutQuad:function(t){return(t/=.5)<1?.5*Math.pow(t,2):-.5*((t-=2)*t-2)},easeInCubic:function(t){return Math.pow(t,3)},easeOutCubic:function(t){return Math.pow(t-1,3)+1},easeInOutCubic:function(t){return(t/=.5)<1?.5*Math.pow(t,3):.5*(Math.pow(t-2,3)+2)},easeInQuart:function(t){return Math.pow(t,4)},easeOutQuart:function(t){return-(Math.pow(t-1,4)-1)},easeInOutQuart:function(t){return(t/=.5)<1?.5*Math.pow(t,4):-.5*((t-=2)*Math.pow(t,3)-2)},easeInSine:function(t){return 1-Math.cos(t*T.PI_2)},easeOutSine:function(t){return Math.sin(t*T.PI_2)},easeInOutSine:function(t){return-.5*(Math.cos(Math.PI*t)-1)},easeInExpo:function(t){return 0===t?0:Math.pow(2,10*(t-1))},easeOutExpo:function(t){return 1===t?1:1-Math.pow(2,-10*t)},easeInOutExpo:function(t){return 0===t?0:1===t?1:(t/=.5)<1?.5*Math.pow(2,10*(t-1)):.5*(2-Math.pow(2,-10*--t))},easeInCirc:function(t){return-(Math.sqrt(1-t*t)-1)},easeOutCirc:function(t){return Math.sqrt(1-Math.pow(t-1,2))},easeInOutCirc:function(t){return(t/=.5)<1?-.5*(Math.sqrt(1-t*t)-1):.5*(Math.sqrt(1-(t-=2)*t)+1)},easeInBack:function(t){var e=1.70158;return t*t*((e+1)*t-e)},easeOutBack:function(t){var e=1.70158;return(t-=1)*t*((e+1)*t+e)+1},easeInOutBack:function(t){var e=1.70158;return(t/=.5)<1?t*t*((1+(e*=1.525))*t-e)*.5:.5*((t-=2)*t*((1+(e*=1.525))*t+e)+2)},getEasing:function(t){return"function"==typeof t?t:this[t]||this.easeLinear}},D=function(){function t(t,e){this.x=void 0,this.y=void 0,this.x=t||0,this.y=e||0}var e=t.prototype;return e.set=function(t,e){return this.x=t,this.y=e,this},e.setX=function(t){return this.x=t,this},e.setY=function(t){return this.y=t,this},e.getGradient=function(){return 0!==this.x?Math.atan2(this.y,this.x):this.y>0?T.PI_2:this.y<0?-T.PI_2:void 0},e.copy=function(t){return this.x=t.x,this.y=t.y,this},e.add=function(t,e){return void 0!==e?this.addVectors(t,e):(this.x+=t.x,this.y+=t.y,this)},e.addXY=function(t,e){return this.x+=t,this.y+=e,this},e.addVectors=function(t,e){return this.x=t.x+e.x,this.y=t.y+e.y,this},e.sub=function(t,e){return void 0!==e?this.subVectors(t,e):(this.x-=t.x,this.y-=t.y,this)},e.subVectors=function(t,e){return this.x=t.x-e.x,this.y=t.y-e.y,this},e.divideScalar=function(t){return 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