canvas球体走光运动效果-html代码-BFW代码库

canvas球体走光运动效果

代码语言：html

所属分类：动画

代码描述：canvas球体走光运动效果

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">

<style>
* {
  margin: 0;
  padding: 0;
  border: 0;
  background: #000 
}

canvas {
position: relative; top:50%;
left:50%;
margin-left:-50vmin;
width:100vmin;
height:100vmin;
overflow:hidden;
}
</style>

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

<script>
var canvas, ctx, max, p, count;

window.onload = function () {
  var a, b, r;
  canvas = document.getElementsByTagName('canvas')[0];
  ctx = canvas.getContext('2d');
  canvas.width = canvas.height = 400;
  ctx.fillRect(0, 0, 400, 400);
  max = 80;
  count = 150;
  p = [];
  r = 0;
  for (a = 0; a < max; a++) {
    p.push([Math.cos(r), Math.sin(r), 0]);
    r += Math.PI * 2 / max;
  }
  for (a = 0; a < max; a++) p.push([0, p[a][0], p[a][1]]);
  for (a = 0; a < max; a++) p.push([p[a][1], 0, p[a][0]]);
  rus();
};

function rus() {
  var a, b, c, d, e, s, tim, p2, xp, yp, xp2, yp2, x, y, z, x1, y1, z1;
  ctx.globalCompositeOperation = "source-over";
  ctx.fillStyle = "rgba(0,0,0,0.03)";
  ctx.........完整代码请登录后点击上方下载按钮下载查看