easeljs实现粒子流动动画效果-html代码-BFW代码库

easeljs实现粒子流动动画效果

代码语言：html

所属分类：粒子

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">

<title>  Particle Helix PoC</title>
<style>
  body {
  background: #eee;
  margin: 0;
  overflow: hidden;
}
#target { background: #203656; }
</style>

</head>
<body translate="no">
<canvas id="target"></canvas>

<script type="text/javascript" src="http://repo.bfw.wiki/bfwrepo/js/easeljs.js"></script>
<script>
  var c = createjs, stage = new c.StageGL("target"), t=0, count=0, w, h, max, min;
// configurable:
var dotR = 8, amp0Amt=1, amp1Amt=0.2, maxDots=2000, speed=2.5;
c.Ticker.timingMode = c.Ticker.RAF;
c.Ticker.on("tick", tick);
stage.setClearColor("#201624");

var dotTemplate, dots=[];

while (dots.length < maxDots) {
	getDot();
}

function tick(evt) {
	var d = evt.delta;

	var fov = min*1;
	for (var i=0, l=dots.length; i<l; i++) {
		var dot = dots[i];
		var t = (dot.t += d*0.0001*speed*dot.speed);
		var x = t%1*w-w/2;
		x += Math.cos(t*dot.p1)*min*dot.a1*amp1Amt;
		var y = Math.sin(t*Math.PI*4+Math.PI)*min*dot.r*0.25;
		y += Math.sin(t*dot.p1)*min*dot.a1*amp1Amt
		var z = Math.cos(t*Math.PI*4+Math.PI)*min*dot.r*0.25;
		z += Math.cos(t*dot.p1)*min*dot.a1*amp1Amt;
		
		var s = fov/(z+fov);
		x *= s;
		y *= s;
		
		dot.x = x+w/2;
		dot.y = y+h/2;
		dot.getChildAt(1).alpha = 1-s;
		
		dot.scaleX = dot.scaleY = Math.pow(s*(1+dot.size),2)*0.3;
	}.........完整代码请登录后点击上方下载按钮下载查看