demo:  http://output.jsbin.com/davixatona

<!DOCTYPE html>

<html>

<head>

  <meta charset="utf-8">

  <meta name="viewport" content="width=device-width">

  <title>Paper</title>

  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>

  <script src="https://code.createjs.com/easeljs-0.8.2.min.js"></script>

  <script src="https://code.createjs.com/tweenjs-0.6.2.min.js"></script>

</head>

<style type="text/css">

body {

  background-color: aliceblue;

}

#js_canvas {

  border: 1px solid red;

}

</style>

<body>

  <canvas id="js_canvas" width="900" height="506"></canvas>

</body>

</html>

<script type="text/javascript">

var js_paper = [

  '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',

  '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',

  'iVBORw0KGgoAAAANSUhEUgAAAAgAAAAICAYAAADED76LAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAA3hpVFh0WE1MOmNvbS5hZG9iZS54bXAAAAAAADw/eHBhY2tldCBiZWdpbj0i77u/IiBpZD0iVzVNME1wQ2VoaUh6cmVTek5UY3prYzlkIj8+IDx4OnhtcG1ldGEgeG1sbnM6eD0iYWRvYmU6bnM6bWV0YS8iIHg6eG1wdGs9IkFkb2JlIFhNUCBDb3JlIDUuMy1jMDExIDY2LjE0NTY2MSwgMjAxMi8wMi8wNi0xNDo1NjoyNyAgICAgICAgIj4gPHJkZjpSREYgeG1sbnM6cmRmPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5LzAyLzIyLXJkZi1zeW50YXgtbnMjIj4gPHJkZjpEZXNjcmlwdGlvbiByZGY6YWJvdXQ9IiIgeG1sbnM6eG1wTU09Imh0dHA6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC9tbS8iIHhtbG5zOnN0UmVmPSJodHRwOi8vbnMuYWRvYmUuY29tL3hhcC8xLjAvc1R5cGUvUmVzb3VyY2VSZWYjIiB4bWxuczp4bXA9Imh0dHA6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC8iIHhtcE1NOk9yaWdpbmFsRG9jdW1lbnRJRD0ieG1wLmRpZDo3MzdEODgwMzhBNEZFNDExODNGQUQ4RDkwMjVGMDFCQyIgeG1wTU06RG9jdW1lbnRJRD0ieG1wLmRpZDowQjM0QkYyNUQzQkExMUU1QjZEMzlDRUMyNzExQTI0QiIgeG1wTU06SW5zdGFuY2VJRD0ieG1wLmlpZDowQjM0QkYyNEQzQkExMUU1QjZEMzlDRUMyNzExQTI0QiIgeG1wOkNyZWF0b3JUb29sPSJBZG9iZSBQaG90b3Nob3AgQ1M2IChXaW5kb3dzKSI+IDx4bXBNTTpEZXJpdmVkRnJvbSBzdFJlZjppbnN0YW5jZUlEPSJ4bXAuaWlkOjQ5MDEzMjcyQjFEM0U1MTFCN0FDOTU4NzYxMjlGNzY1IiBzdFJlZjpkb2N1bWVudElEPSJhZG9iZTpkb2NpZDpwaG90b3Nob3A6ZTIwNmJjMDItZDE3YS0xMWU1LWI5OGMtZWZmNDQyODk5MTIxIi8+IDwvcmRmOkRlc2NyaXB0aW9uPiA8L3JkZjpSREY+IDwveDp4bXBtZXRhPiA8P3hwYWNrZXQgZW5kPSJyIj8+3boKZQAAAHZJREFUeNpi/PiwkwEJOALxXSB+BBNgQpLMBeJdQLwfiGWRFbAD8WwgngTELECsBFUkwwAV2AvE1gyoQBmqyBFkwnMG7EAFiMNBCrKB+A2a5A8gTgDiXpCCV1AHwsAzqG8WwtwAAiuAOAyIpYE4CIifwlQDBBgAOxMUz4vRceUAAAAASUVORK5CYII='

];

jQuery(function($){

  var $canvas = $('#js_canvas');

  var paperArr = [];

  var stage;

  $canvas[0].width = 900;

  $canvas[0].height = 506;

  function init(){

    for(var i = 0; i < js_paper.length; i++){

      createBitmaps('data:image/jpg;base64,' + js_paper[i]);

    }

    stage = new createjs.Stage($canvas[0]);

    createjs.MotionGuidePlugin.install(createjs.Tween);

    createjs.Ticker.setFPS(60);

    createjs.Ticker.addEventListener("tick", stage);

    setInterval(function() {

      drawPaper2(stage, paperArr);

    }, 200);

  }

  function createBitmaps(url){

    var bitmap = new createjs.Bitmap(url);

    bitmap.x = -100;

    bitmap.y = -100;

    paperArr.push(bitmap);

  }

  function drawPaper(stage, arr){

    var l= 20, r=  $canvas[0].width - 20;

    var index = Math.floor(Math.random() * arr.length);

    var f = arr[index].clone();

    //f.alpha = 0.8;

    var ran = (Math.random()>0.5?-1:1);

    var startX = l + Math.random() * (r - l);

    var x = [startX + Math.random() * 30 * (Math.random()>0.5?1:-1), startX + Math.random() * 30 * (Math.random()>0.5?1:-1), startX];

    var endY = 1800;

    var y = [endY*0.3+Math.random() * 20 * (Math.random()>0.5?1:-1), endY*0.6+Math.random() * 20 * (Math.random()>0.5?1:-1), endY];

    stage.addChild(f);

    createjs.Tween.get(f)

      .to({ guide:{ path:[startX,0,  x[0],y[0],x[1],y[1],  x[2],y[2],startX,y[2]]}, rotation: (500 + Math.random() * 500)*ran, alpha: 0}, 30000 + Math.random() * 3000, createjs.Ease.linear)

      .call(function(){

        stage.removeChild(f);

      });

  }

  function drawPaper2(stage, arr){

    var l= 20, r=  $canvas[0].width - 20;

    var index = Math.floor(Math.random() * arr.length);

    var f = arr[index].clone();

    var ran = (Math.random()>0.5?-1:1);

    var startX = l + Math.random() * (r - l);

    var x = [startX + Math.random() * 30 * (Math.random()>0.5?1:-1), startX + Math.random() * 30 * (Math.random()>0.5?1:-1), startX];

    var endY = 500;

    var y = [endY*0.3+Math.random() * 20 * (Math.random()>0.5?1:-1), endY*0.6+Math.random() * 20 * (Math.random()>0.5?1:-1), endY];

    stage.addChild(f);

    createjs.Tween.get(f)

      .to({ guide:{ path:[startX,0,  x[0],y[0],x[1],y[1],  x[2],y[2],startX,y[2]]}, rotation: (500 + Math.random() * 500)*ran, alpha:0}, 10000 + Math.random() * 3000, createjs.Ease.linear)

      .wait(100)

      //.to({alpha:0}, 400)

      .call(function(){

        stage.removeChild(f);

      });

  }

  init();

});

</script>

demo:  http://output.jsbin.com/davixatona

createjs 下雪 实例的更多相关文章

  1. Cocos2d-JS自定义粒子系统

    除了使用Cocos2d-JS的11种内置粒子系统外,我们还可以通过创建ParticleSystem对象,并设置属性实现自定义粒子系统,通过这种方式完全可以实现我们说需要的各种效果的粒子系统.使用Par ...

  2. Cocos2d-x中自定义粒子系统

    除了使用Cocos2d-x的11种内置粒子系统外,我们还可以通过创建ParticleSystemQuad对象,并设置属性实现自定义粒子系统,通过这种方式完全可以实现我们说需要的各种效果的粒子系统.使用 ...

  3. JavaScript面试（-------------------------------------------）

    this是什么 方法调用模式 构造器调用模式 函数调用模式 apply/call模式 this是什么 —大多语言中,’this’代表由类实例化的当前对象.在JavaScript中,’this’通常表示 ...

  4. 最近学习工作流 推荐一个activiti 的教程文档

    全文地址:http://www.mossle.com/docs/activiti/ Activiti 5.15 用户手册 Table of Contents 1. 简介 协议 下载 源码 必要的软件 ...

  5. HTML5游戏开发引擎,初识CreateJS

    CreateJS为CreateJS库,可以说是一款为HTML5游戏开发的引擎.打造 HTML5 游戏,构建新游戏,提供构建最新 HTML5 的技术.你可以通过这个网站学习如何构建跨平台和跨终端游戏.这 ...

  6. CreateJSのTweenJS、SoundJS、PreloadJS

    TweenJS基础实例: var canvas = document.getElementById('myCanvas'), stage = new createjs.Stage(canvas); v ...

  7. createjs 使用记录

    createjs由几个库组成: l,easeljs,这个是核心,包括了显示列表.事件机制: 2,preloadjs,用于预加载图片等: 3,tweenjs,用于控制元件的缓动: 4,soundjs,用 ...

  8. createjs绘制扇形的方法

    扇形由三段线条组成,两条直线和一条弧线,直线可以用createjs中的lineTo函数画出,弧线用Graphics.arc函数来画. 一.关于createjs中的Graphics.Arc API Gr ...

  9. Photoshop实例视频教程

    Photoshop实例视频教程 2019/04/23 文件名 大小 复古街机风建筑效果图PS教程.mp4 6.63 MB 48.PS教程从零开始学——切片选择工具.mp4 20.90 MB PS教程- ...

随机推荐

  1. usaco 奶牛集会 && 奶牛抗议

    奶牛集会 Description 约翰家的N头奶牛每年都会参加“哞哞大会” .哞哞大会是世界奶牛界的盛事.集会上 的活动很多,比如堆干草,跨栅栏,摸牛仔的屁股等等.当然,哞哞大叫肯定也包括在内. 奶牛 ...

  2. Ruby on Rails Session 1: How to Build a Ruby on Rails on the Ubuntu.

    About Ruby on Rails Ruby on Rails is an application stack that provides developers with a framework ...

  3. 如何实例化i2c_client（四法）

    一.在板文件进行client的实例化 在内核的初始化中(例如在板文件中)定义设备的信息.这种操作的前提是内核编译的时候已经确定有哪些i2c设备和它们的地址,还要知道连接的总线的编号. 比如在板文件/a ...

  4. UIButton set touch handler in code

    One option is to set the button up using [myButton addTarget:yourOtherClass action:@selector(mySelec ...

  5. add-apt-repository cloud-archive:liberty

    apt-get update && apt-get upgrade;

  6. 安装Office时出现windows installer服务不能更新一个或多个受保护的windows文件错误的解决方法

    今天在Windows XP上安装Microsoft Office 2010时,总是遇到“Windows Installer服务不能更新一个或多个受保护的windows文件,安装失败,正在回滚更改”提示 ...

  7. oc学习之路----内存管理

    直接上图啊.

  8. php-mysql结果集函数比较

    本节主要介绍了获取查询结果集的4个函数,此处对它们进行综合比较.     ● mysql_result():优点在于使用方便:而缺点在于功能少,一次调用只能获取结果数据集中的一行记录,对较大型的数据库 ...

  9. 在LAMP环境下搭建JSP动态网页

    开发环境Linux的版本号Linux localhost.localdomain 2.6.32-358.el6.x86_64 #1 SMP Tue Jan 29 11:47:41 EST 2013 x ...

  10. mybatis0201 01复习

    mybatis是什么? mybatis是一个持久层框架,是apache下的开源项目,前身是itbatis,是一个不完全的ORM框架(因为mybatis提供输入和输出的映射,需要程序员自己写sql语句) ...