2 lines
2.5 KiB
JavaScript
2 lines
2.5 KiB
JavaScript
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"use strict";function updateCoords(e){pointerX=(e.clientX||e.touches[0].clientX)-canvasEl.getBoundingClientRect().left,pointerY=e.clientY||e.touches[0].clientY-canvasEl.getBoundingClientRect().top}function setParticuleDirection(e){var t=anime.random(0,360)*Math.PI/180,a=anime.random(50,180),n=[-1,1][anime.random(0,1)]*a;return{x:e.x+n*Math.cos(t),y:e.y+n*Math.sin(t)}}function createParticule(e,t){var a={};return a.x=e,a.y=t,a.color=colors[anime.random(0,colors.length-1)],a.radius=anime.random(16,32),a.endPos=setParticuleDirection(a),a.draw=function(){ctx.beginPath(),ctx.arc(a.x,a.y,a.radius,0,2*Math.PI,!0),ctx.fillStyle=a.color,ctx.fill()},a}function createCircle(e,t){var a={};return a.x=e,a.y=t,a.color="#F00",a.radius=.1,a.alpha=.5,a.lineWidth=6,a.draw=function(){ctx.globalAlpha=a.alpha,ctx.beginPath(),ctx.arc(a.x,a.y,a.radius,0,2*Math.PI,!0),ctx.lineWidth=a.lineWidth,ctx.strokeStyle=a.color,ctx.stroke(),ctx.globalAlpha=1},a}function renderParticule(e){for(var t=0;t<e.animatables.length;t++)e.animatables[t].target.draw()}function animateParticules(e,t){for(var a=createCircle(e,t),n=[],i=0;i<numberOfParticules;i++)n.push(createParticule(e,t));anime.timeline().add({targets:n,x:function(e){return e.endPos.x},y:function(e){return e.endPos.y},radius:.1,duration:anime.random(1200,1800),easing:"easeOutExpo",update:renderParticule}).add({targets:a,radius:anime.random(80,160),lineWidth:0,alpha:{value:0,easing:"linear",duration:anime.random(600,800)},duration:anime.random(1200,1800),easing:"easeOutExpo",update:renderParticule,offset:0})}function debounce(e,t){var a;return function(){var n=this,i=arguments;clearTimeout(a),a=setTimeout(function(){e.apply(n,i)},t)}}var canvasEl=document.querySelector(".fireworks");if(canvasEl){var ctx=canvasEl.getContext("2d"),numberOfParticules=30,pointerX=0,pointerY=0,tap="mousedown",colors=["#FF1461","#18FF92","#5A87FF","#FBF38C"],setCanvasSize=debounce(function(){canvasEl.width=2*window.innerWidth,canvasEl.height=2*window.innerHeight,canvasEl.style.width=window.innerWidth+"px",canvasEl.style.height=window.innerHeight+"px",canvasEl.getContext("2d").scale(2,2)},500),render=anime({duration:1/0,update:function(){ctx.clearRect(0,0,canvasEl.width,canvasEl.height)}});document.addEventListener(tap,function(e){"sidebar"!==e.target.id&&"toggle-sidebar"!==e.target.id&&"A"!==e.target.nodeName&&"IMG"!==e.target.nodeName&&(render.play(),updateCoords(e),animateParticules(pointerX,pointerY))},!1),setCanvasSize(),window.addEventListener("resize",setCanvasSize,!1)}
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