原生js实现canvas大风车和稻谷丰收动画效果代码-html代码-BFW代码库

原生js实现canvas大风车和稻谷丰收动画效果代码

代码语言：html

所属分类：动画

代码描述：原生js实现canvas大风车和稻谷丰收动画效果代码

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">
  

  
  
<style>
* {
  margin: 0;
  padding: 0;
}

canvas#canvas {
  display: block;
  background: #FFEFBA;  /* fallback for old browsers */
  background: -webkit-linear-gradient(to bottom, #FFFFFF, #FFEFBA);  /* Chrome 10-25, Safari 5.1-6 */
  background: linear-gradient(to bottom, #FFFFFF, #FFEFBA); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}
</style>



</head>

<body translate="no" >
  <canvas id="canvas">Canvas not supported.</canvas>

  
      <script>
(function () {
  'use strict';
  window.addEventListener('load', function () {
    var canvas = document.getElementById('canvas');

    if (!canvas || !canvas.getContext) {
      return false;
    }

    /********************
        Random Number
      ********************/

    function rand(min, max) {
      return Math.floor(Math.random() * (max - min + 1) + min);
    }

    /********************
        Var
      ********************/

    var ctx = canvas.getContext('2d');
    var X = canvas.width = window.innerWidth;
    var Y = canvas.height = window.innerHeight;
    var mouseX = X / 2;
    var mouseY = Y / 2;
    var shapes = [];
    var shapeNum = 1500;
    var windmills = [];
    var windmillNum = 5;
    var xSplit = X / 4;

    if (X < 768) {
      shapeNum = 700;
      windmillNum = 3;
      xSplit = X / 2;
    }

    /********************
        Animation
      ********************/

    window.requestAnimationFrame =
    window.requestAnimationFrame ||
    window.mozRequestAnimationFrame ||
    window.webkitRequestAnimationFrame ||
    window.msRequestAnimationFrame ||
    function (cb) {
      setTimeout(cb, 17);
    };

    /********************
         Shape
       ********************/

    function Shape(ctx.........完整代码请登录后点击上方下载按钮下载查看