pixi-ease.js

!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((t=t||self).Ease={})}(this,function(t){"use strict";var e="undefined"!=typeof globalThis?globalThis:"undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:{};function s(t,e){return t(e={exports:{}},e.exports),e.exports}var n=s(function(t,s){(function(){var e;(function(e){t.exports=e})(e={linear:function(t,e,s,n){return s*t/n+e},easeInQuad:function(t,e,s,n){return s*(t/=n)*t+e},easeOutQuad:function(t,e,s,n){return-s*(t/=n)*(t-2)+e},easeInOutQuad:function(t,e,s,n){return(t/=n/2)<1?s/2*t*t+e:-s/2*(--t*(t-2)-1)+e},easeInCubic:function(t,e,s,n){return s*(t/=n)*t*t+e},easeOutCubic:function(t,e,s,n){return s*((t=t/n-1)*t*t+1)+e},easeInOutCubic:function(t,e,s,n){return(t/=n/2)<1?s/2*t*t*t+e:s/2*((t-=2)*t*t+2)+e},easeInQuart:function(t,e,s,n){return s*(t/=n)*t*t*t+e},easeOutQuart:function(t,e,s,n){return-s*((t=t/n-1)*t*t*t-1)+e},easeInOutQuart:function(t,e,s,n){return(t/=n/2)<1?s/2*t*t*t*t+e:-s/2*((t-=2)*t*t*t-2)+e},easeInQuint:function(t,e,s,n){return s*(t/=n)*t*t*t*t+e},easeOutQuint:function(t,e,s,n){return s*((t=t/n-1)*t*t*t*t+1)+e},easeInOutQuint:function(t,e,s,n){return(t/=n/2)<1?s/2*t*t*t*t*t+e:s/2*((t-=2)*t*t*t*t+2)+e},easeInSine:function(t,e,s,n){return-s*Math.cos(t/n*(Math.PI/2))+s+e},easeOutSine:function(t,e,s,n){return s*Math.sin(t/n*(Math.PI/2))+e},easeInOutSine:function(t,e,s,n){return-s/2*(Math.cos(Math.PI*t/n)-1)+e},easeInExpo:function(t,e,s,n){return 0===t?e:s*Math.pow(2,10*(t/n-1))+e},easeOutExpo:function(t,e,s,n){return t===n?e+s:s*(1-Math.pow(2,-10*t/n))+e},easeInOutExpo:function(t,e,s,n){return(t/=n/2)<1?s/2*Math.pow(2,10*(t-1))+e:s/2*(2-Math.pow(2,-10*--t))+e},easeInCirc:function(t,e,s,n){return-s*(Math.sqrt(1-(t/=n)*t)-1)+e},easeOutCirc:function(t,e,s,n){return s*Math.sqrt(1-(t=t/n-1)*t)+e},easeInOutCirc:function(t,e,s,n){return(t/=n/2)<1?-s/2*(Math.sqrt(1-t*t)-1)+e:s/2*(Math.sqrt(1-(t-=2)*t)+1)+e},easeInElastic:function(t,e,s,n){var i,a,o;return o=1.70158,0===t||(t/=n),(a=0)||(a=.3*n),(i=s)<Math.abs(s)?(i=s,o=a/4):o=a/(2*Math.PI)*Math.asin(s/i),-i*Math.pow(2,10*(t-=1))*Math.sin((t*n-o)*(2*Math.PI)/a)+e},easeOutElastic:function(t,e,s,n){var i,a,o;return o=1.70158,0===t||(t/=n),(a=0)||(a=.3*n),(i=s)<Math.abs(s)?(i=s,o=a/4):o=a/(2*Math.PI)*Math.asin(s/i),i*Math.pow(2,-10*t)*Math.sin((t*n-o)*(2*Math.PI)/a)+s+e},easeInOutElastic:function(t,e,s,n){var i,a,o;return o=1.70158,0===t||(t/=n/2),(a=0)||(a=n*(.3*1.5)),(i=s)<Math.abs(s)?(i=s,o=a/4):o=a/(2*Math.PI)*Math.asin(s/i),t<1?i*Math.pow(2,10*(t-=1))*Math.sin((t*n-o)*(2*Math.PI)/a)*-.5+e:i*Math.pow(2,-10*(t-=1))*Math.sin((t*n-o)*(2*Math.PI)/a)*.5+s+e},easeInBack:function(t,e,s,n,i){return void 0===i&&(i=1.70158),s*(t/=n)*t*((i+1)*t-i)+e},easeOutBack:function(t,e,s,n,i){return void 0===i&&(i=1.70158),s*((t=t/n-1)*t*((i+1)*t+i)+1)+e},easeInOutBack:function(t,e,s,n,i){return void 0===i&&(i=1.70158),(t/=n/2)<1?s/2*(t*t*((1+(i*=1.525))*t-i))+e:s/2*((t-=2)*t*((1+(i*=1.525))*t+i)+2)+e},easeInBounce:function(t,s,n,i){return n-e.easeOutBounce(i-t,0,n,i)+s},easeOutBounce:function(t,e,s,n){return(t/=n)<1/2.75?s*(7.5625*t*t)+e:t<2/2.75?s*(7.5625*(t-=1.5/2.75)*t+.75)+e:t<2.5/2.75?s*(7.5625*(t-=2.25/2.75)*t+.9375)+e:s*(7.5625*(t-=2.625/2.75)*t+.984375)+e},easeInOutBounce:function(t,s,n,i){return t<i/2?.5*e.easeInBounce(2*t,0,n,i)+s:.5*e.easeOutBounce(2*t-i,0,n,i)+.5*n+s}})}).call(e)}),i=s(function(t){var e=Object.prototype.hasOwnProperty,s="~";function n(){}function i(t,e,s){this.fn=t,this.context=e,this.once=s||!1}function a(t,e,n,a,o){if("function"!=typeof n)throw new TypeError("The listener must be a function");var r=new i(n,a||t,o),h=s?s+e:e;return t._events[h]?t._events[h].fn?t._events[h]=[t._events[h],r]:t._events[h].push(r):(t._events[h]=r,t._eventsCount++),t}function o(t,e){0==--t._eventsCount?t._events=new n:delete t._events[e]}function r(){this._events=new n,this._eventsCount=0}Object.create&&(n.prototype=Object.create(null),(new n).__proto__||(s=!1)),r.prototype.eventNames=function(){var t,n,i=[];if(0===this._eventsCount)return i;for(n in t=this._events)e.call(t,n)&&i.push(s?n.slice(1):n);return Object.getOwnPropertySymbols?i.concat(Object.getOwnPropertySymbols(t)):i},r.prototype.listeners=function(t){var e=s?s+t:t,n=this._events[e];if(!n)return[];if(n.fn)return[n.fn];for(var i=0,a=n.length,o=new Array(a);i<a;i++)o[i]=n[i].fn;return o},r.prototype.listenerCount=function(t){var e=s?s+t:t,n=this._events[e];return n?n.fn?1:n.length:0},r.prototype.emit=function(t,e,n,i,a,o){var r=s?s+t:t;if(!this._events[r])return!1;var h,u,c=this._events[r],l=arguments.length;if(c.fn){switch(c.once&&this.removeListener(t,c.fn,void 0,!0),l){case 1:return c.fn.call(c.context),!0;case 2:return c.fn.call(c.context,e),!0;case 3:return c.fn.call(c.context,e,n),!0;case 4:return c.fn.call(c.context,e,n,i),!0;case 5:return c.fn.call(c.context,e,n,i,a),!0;case 6:return c.fn.call(c.context,e,n,i,a,o),!0}for(u=1,h=new Array(l-1);u<l;u++)h[u-1]=arguments[u];c.fn.apply(c.context,h)}else{var p,f=c.length;for(u=0;u<f;u++)switch(c[u].once&&this.removeListener(t,c[u].fn,void 0,!0),l){case 1:c[u].fn.call(c[u].context);break;case 2:c[u].fn.call(c[u].context,e);break;case 3:c[u].fn.call(c[u].context,e,n);break;case 4:c[u].fn.call(c[u].context,e,n,i);break;default:if(!h)for(p=1,h=new Array(l-1);p<l;p++)h[p-1]=arguments[p];c[u].fn.apply(c[u].context,h)}}return!0},r.prototype.on=function(t,e,s){return a(this,t,e,s,!1)},r.prototype.once=function(t,e,s){return a(this,t,e,s,!0)},r.prototype.removeListener=function(t,e,n,i){var a=s?s+t:t;if(!this._events[a])return this;if(!e)return o(this,a),this;var r=this._events[a];if(r.fn)r.fn!==e||i&&!r.once||n&&r.context!==n||o(this,a);else{for(var h=0,u=[],c=r.length;h<c;h++)(r[h].fn!==e||i&&!r[h].once||n&&r[h].context!==n)&&u.push(r[h]);u.length?this._events[a]=1===u.length?u[0]:u:o(this,a)}return this},r.prototype.removeAllListeners=function(t){var e;return t?(e=s?s+t:t,this._events[e]&&o(this,e)):(this._events=new n,this._eventsCount=0),this},r.prototype.off=r.prototype.removeListener,r.prototype.addListener=r.prototype.on,r.prefixed=s,r.EventEmitter=r,t.exports=r});class a extends i{constructor(t,e,s){super(),this.elements=Array.isArray(t)?t:[t],this.eases=[],this.options=s||{},this.time=0;for(let t in e)for(let s of this.elements)this.addParam(s,t,e[t])}addParam(t,e,s){let n,i,o,r,h=e;switch(e){case"scaleX":case"skewX":i=s,o=s-(n=t[h=e.substr(0,e.length-1)].x),r=t=>this.updateCoord(t,h,"x");break;case"scaleY":case"skewY":i=s,o=s-(n=t[h=e.substr(0,e.length-1)].y),r=t=>this.updateCoord(t,h,"y");break;case"tint":case"blend":const u=Array.isArray(s)?s:[t.tint,s];n=0,o=i=u.length,r="tint"===e?t=>this.updateTint(t,u):t=>this.updateBlend(t,u);break;case"shake":n={x:t.x,y:t.y},i=s,r=t=>this.updateShake(t);break;case"position":n={x:t.x,y:t.y},o={x:(i={x:s.x,y:s.y}).x-n.x,y:i.y-n.y},r=t=>this.updatePosition(t);break;case"skew":case"scale":i=s,o=s-(n=t[e].x),r=t=>this.updatePoint(t,e);break;case"face":n=t.rotation,o=(i=a.shortestAngle(n,Math.atan2(s.y-t.y,s.x-t.x)))-n,r=t=>this.updateOne(t,"rotation");break;default:i=s,o=s-(n=t[e]),r=t=>this.updateOne(t,e)}this.eases.push({element:t,entry:e,update:r,start:n,to:i,delta:o})}static shortestAngle(t,e){const s=2*Math.PI;let n=Math.abs(t-e)%s;var i;return(n=n>Math.PI?s-n:n)*(((e-t+Math.PI)%(i=s)+i)%i-Math.PI>0?1:-1)}remove(t,e){if(0===arguments.length)this.eases=[];else{"string"==typeof e&&(e=[e]);for(let s=0;s<this.eases.length;s++){const n=this.eases[s];t&&n.element!==t||e&&-1===e.indexOf(n.entry)||(this.eases.splice(s,1),s--)}}if(0===this.eases.length)return!0}updateOne(t,e){t.element[e]=this.options.ease(this.time,t.start,t.delta,this.options.duration)}updatePoint(t,e){t.element[e].x=t.element[e].y=this.options.ease(this.time,t.start,t.delta,this.options.duration)}updatePosition(t){t.element.x=this.options.ease(this.time,t.start.x,t.delta.x,this.options.duration),t.element.y=this.options.ease(this.time,t.start.y,t.delta.y,this.options.duration)}updateCoord(t,e,s){t.element[e][s]=this.options.ease(this.time,t.start,t.delta,this.options.duration)}updateTint(t,e){let s=Math.floor(this.options.ease(this.time,t.start,t.delta,this.options.duration));s===e.length&&(s=e.length-1),t.element.tint=e[s]}updateBlend(t,e){const s=this.options.ease(this.time,t.start,t.delta,this.options.duration);let n=Math.floor(s);n===e.length&&(n=e.length-1);let i=n+1;i===e.length&&(i=this.options.reverse?n-1:this.options.repeat?0:n);const a=s-n,o=e[n],r=e[i],h=1-a,u=h*(o>>16)+a*(r>>16),c=h*(o>>8&255)+a*(r>>8&255),l=h*(255&o)+a*(255&r);t.element.tint=u<<16|c<<8|l}updateShake(t){function e(t){return Math.floor(Math.random()*t)-Math.floor(t/2)}t.element.x=t.start.x+e(t.to),t.element.y=t.start.y+e(t.to)}complete(t){"shake"===t.entry&&(t.element.x=t.start.x,t.element.y=t.start.y)}reverse(t){if("position"===t.entry){const e=t.to.x,s=t.to.y;t.to.x=t.start.x,t.to.y=t.start.y,t.start.x=e,t.start.y=s,t.delta.x=-t.delta.x,t.delta.y=-t.delta.y}else{const e=t.to;t.to=t.start,t.start=e,t.delta=-t.delta}}repeat(t){switch(t.entry){case"skewX":t.element.skew.x=t.start;break;case"skewY":t.element.skew.y=t.start;break;case"skew":t.element.skew.x=t.start,t.element.skew.y=t.start;break;case"scaleX":t.element.scale.x=t.start;break;case"scaleY":t.element.scale.y=t.start;break;case"scale":t.element.scale.x=t.start,t.element.scale.y=t.start;break;case"position":t.element.x=t.start.x,t.element.y=t.start.y;break;default:t.element[t.entry]=t.start}}update(t){if(0===this.eases.length)return!0;if(this.options.wait){if(this.options.wait-=t,this.options.wait>0)return void this.emit("wait",this);t=-this.options.wait,this.options.wait=0,this.emit("wait-end",this)}this.time+=t;let e=0;this.time>=this.options.duration&&(e=this.time-this.options.duration,this.time=this.options.duration);for(let t=0;t<this.eases.length;t++){const e=this.eases[t];e.element._destroyed?(this.eases.splice(t,1),t--):e.update(e)}if(this.emit("each",this),this.time>=this.options.duration)if(this.options.reverse)this.eases.forEach(t=>this.reverse(t)),this.time=e,e&&this.eases.forEach(t=>t.update(t)),this.emit("reverse",this),this.options.repeat?!0!==this.options.repeat&&this.options.repeat--:this.options.reverse=!1;else{if(!this.options.repeat)return this.eases.forEach(t=>this.complete(t)),this.emit("complete",this),!0;this.eases.forEach(t=>this.repeat(t)),this.time=e,e&&this.eases.forEach(t=>t.update(t)),!0!==this.options.repeat&&this.options.repeat--,this.emit("repeat",this)}}get count(){return this.eases.length}}const o={duration:1e3,ease:n.easeInOutSine,maxFrame:1e3/60,ticker:null,useRAF:!0};class r extends i{constructor(t){super(),this.options=Object.assign({},o,t),this.easings=[],this.empty=!0,this.options.ticker&&this.options.ticker.add(this.update,this)}destroy(){this.removeAll(),this.options.useTicker?this.ticker.remove(this.update,this):this.options.useRAF&&(cancelAnimationFrame(this.handleRAF),this.handleRAF=null)}add(t,e,s){(s=s||{}).duration=void 0!==s.duration?s.duration:this.options.duration,s.ease=s.ease||this.options.ease,"string"==typeof s.ease&&(s.ease=n[s.ease]);const i=new a(t,e,s);return this.easings.push(i),this.empty&&this.options.useRAF&&(this.handleRAF=requestAnimationFrame(()=>this.update()),this.lastTime=Date.now()),this.empty=!1,i}target(t,e,s,n){const i=Math.sqrt(Math.pow(t.x-e.x,2)+Math.pow(t.y-e.y,2))/s;return(n=n||{}).duration=i,this.add(t,{x:e.x,y:e.y},n)}face(t,e,s,n){const i=a.shortestAngle(t.rotation,Math.atan2(e.y-t.y,e.x-t.x)),o=Math.abs(i-t.rotation)/s;return(n=n||{}).duration=o,this.add(t,{rotation:i},n)}removeEase(t,e){for(let s=0;s<this.easings.length;s++)this.easings[s].remove(t,e)&&(this.easings.splice(s,1),s--);0===this.easings.length&&(this.empty=!0,this.options.useRAF&&this.handleRAF&&(cancelAnimationFrame(this.handleRAF),this.handleRAF=null))}removeAll(){this.easings=[],this.empty=!0,this.options.useRAF&&this.handleRAF&&(cancelAnimationFrame(this.handleRAF),this.handleRAF=null)}update(t){if(this.options.useTicker)t=this.ticker.elapsedMS;else if(this.options.useRAF){const e=Date.now();t=e-this.lastTime,this.lastTime=e}if(t=Math.min(t,this.options.maxFrame),!this.empty){const e=this.easings.slice(0);for(let s of e)s.update(t)&&this.easings.splice(this.easings.indexOf(s),1);this.emit("each",this),0===this.easings.length&&(this.empty=!0,this.emit("complete",this))}this.options.useRAF&&this.easings.length?this.handleRAF=requestAnimationFrame(()=>this.update()):this.handleRAF=null}get count(){return this.easings.length}countRunning(){let t=0;for(let e of this.easings)t+=e.count;return t}set duration(t){this.options.duration=t}get duration(){return this.options.duration}set ease(t){this.options.ease=t}get ease(){return this.options.ease}}r.id=0;let h=new r;r.ease=h;t.Ease=r,t.List=class{constructor(){console.warn("Ease.List was deprecated. Use new Ease() instead.")}},t.ease=h,Object.defineProperty(t,"__esModule",{value:!0})});