canvas实现小球气泡漂浮三维动画效果代码-html代码-BFW代码库

canvas实现小球气泡漂浮三维动画效果代码

代码语言：html

所属分类：动画

代码描述：canvas实现小球气泡漂浮三维动画效果代码

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">

</head>
<body>

<canvas id='canv'></canvas>

  <script  >
      var c = document.getElementById('canv');
var $ = c.getContext('2d');
var u = 0;

/*
Marsaglia's Xorshift128 PRG: http://en.wikipedia.org/wiki/Xorshift
*/
var shift = function(x, y, z, w) {
  x = x || 123456789;
  y = y || 362436069;
  z = z || 521288629;
  w = w || 88675123;

  return function() {
    var s = x ^ (x << 11);
    x = y;
    y = z;
    z = w;
    w = (w ^ (w >>> 19)) ^ (s ^ (s >>> 8));
    return w;
  };
}

var go = function() {
  var sc, g, g1, i, j, p, x, y, z, w, a, cur,
    d = new Date() / 1000,
    rnd = shift(),
    rnd1 = d,
    rnd2 = 2.4,
    rnd3 = d * 0.2,
    rnd1c = Math.cos(rnd1),
    rnd1s = Math.sin(rnd1),
    rnd2c = Math.cos(rnd2),
    rnd2s = Math.sin(rnd2);

  c.width = window.innerWidth;
  c.height = window.innerHeight;
  sc = Math.max(c.width, c.height);
  $.translate(c.width * 0.5, c.height * 0.5);
  $.scale(sc, sc);

  g = $.createLinearGradient(-1, -2, 1, 2);
  g.addColorStop(0.0, 'hsla(' + u * 5 + ',90%,50%, 1)');
  g.addColorStop(0.5, 'hsla(0,0%,0%,1)');
  g.addColorStop(1.0, 'hsla(' + u + ',90%,50%, 1)');
  $.fillStyle = g;
  $.fillRect(-0.5, -0.5, 1, 1);

  $.rotate(rnd3 % Math.PI * 2);
  for (i = 0; i < 360; i += 1) {

    p = rnd();
    x = (p & 0xff) / 128 - 1;
    y = (p >>> 8 & 0xff) / 128 - 1;
    z = (p >>> 16 & 0xff) / 128 - 1.........完整代码请登录后点击上方下载按钮下载查看