canvas时间粒子
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<canvas id="canvas" style="width:500px;">当前浏览器不支持canvas，请更换浏览器后再试</canvas>
<script src="js/canvasTime.js" type="text/javascript" ></script>
</body>
</html>
ＪＳ封装
(function(){
var digit=
[
[
[0,0,1,1,1,0,0],
[0,1,1,0,1,1,0],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,0,1,1,0],
[0,0,1,1,1,0,0]
],//
[
[0,0,0,1,1,0,0],
[0,1,1,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[1,1,1,1,1,1,1]
],//
[
[0,1,1,1,1,1,0],
[1,1,0,0,0,1,1],
[0,0,0,0,0,1,1],
[0,0,0,0,1,1,0],
[0,0,0,1,1,0,0],
[0,0,1,1,0,0,0],
[0,1,1,0,0,0,0],
[1,1,0,0,0,0,0],
[1,1,0,0,0,1,1],
[1,1,1,1,1,1,1]
],//
[
[1,1,1,1,1,1,1],
[0,0,0,0,0,1,1],
[0,0,0,0,1,1,0],
[0,0,0,1,1,0,0],
[0,0,1,1,1,0,0],
[0,0,0,0,1,1,0],
[0,0,0,0,0,1,1],
[0,0,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,1,1,1,0]
],//
[
[0,0,0,0,1,1,0],
[0,0,0,1,1,1,0],
[0,0,1,1,1,1,0],
[0,1,1,0,1,1,0],
[1,1,0,0,1,1,0],
[1,1,1,1,1,1,1],
[0,0,0,0,1,1,0],
[0,0,0,0,1,1,0],
[0,0,0,0,1,1,0],
[0,0,0,1,1,1,1]
],//
[
[1,1,1,1,1,1,1],
[1,1,0,0,0,0,0],
[1,1,0,0,0,0,0],
[1,1,1,1,1,1,0],
[0,0,0,0,0,1,1],
[0,0,0,0,0,1,1],
[0,0,0,0,0,1,1],
[0,0,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,1,1,1,0]
],//
[
[0,0,0,0,1,1,0],
[0,0,1,1,0,0,0],
[0,1,1,0,0,0,0],
[1,1,0,0,0,0,0],
[1,1,0,1,1,1,0],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,1,1,1,0]
],//
[
[1,1,1,1,1,1,1],
[1,1,0,0,0,1,1],
[0,0,0,0,1,1,0],
[0,0,0,0,1,1,0],
[0,0,0,1,1,0,0],
[0,0,0,1,1,0,0],
[0,0,1,1,0,0,0],
[0,0,1,1,0,0,0],
[0,0,1,1,0,0,0],
[0,0,1,1,0,0,0]
],//
[
[0,1,1,1,1,1,0],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,1,1,1,0],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,1,1,1,0]
],//
[
[0,1,1,1,1,1,0],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[1,1,0,0,0,1,1],
[0,1,1,1,0,1,1],
[0,0,0,0,0,1,1],
[0,0,0,0,0,1,1],
[0,0,0,0,1,1,0],
[0,0,0,1,1,0,0],
[0,1,1,0,0,0,0]
],//
[
[0,0,0,0,0,0,0],
[0,0,1,1,1,0,0],
[0,0,1,1,1,0,0],
[0,0,1,1,1,0,0],
[0,0,0,0,0,0,0],
[0,0,0,0,0,0,0],
[0,0,1,1,1,0,0],
[0,0,1,1,1,0,0],
[0,0,1,1,1,0,0],
[0,0,0,0,0,0,0]
]//:
];
var canvas = document.getElementById('canvas');
//声明canvas的宽高
var H = 100,W = 700;
canvas.height = H;
canvas.width = W;
if(canvas.getContext){
var cxt = canvas.getContext('2d');
}
cxt.fillStyle = '#f00';
cxt.fillRect(10,10,50,50);
//存储时间数据
var data = [];
//存储运动的小球
var balls = [];
//设置粒子半径
var R = canvas.height/20-1;//改变粒子大小
(function(){
var temp = /(\d)(\d):(\d)(\d):(\d)(\d)/.exec(new Date());
//存储时间数字，由十位小时、个位小时、冒号、十位分钟、个位分钟、冒号、十位秒钟、个位秒钟这7个数字组成
data.push(temp[1],temp[2],10,temp[3],temp[4],10,temp[5],temp[6]);
})();
/*生成点阵数字*/
function renderDigit(index,num){
for(var i = 0; i < digit[num].length; i++){
for(var j = 0; j < digit[num][i].length; j++){
if(digit[num][i][j] == 1){
cxt.beginPath();
cxt.arc(14*(R+2)*index + j*2*(R+1)+(R+1),i*2*(R+1)+(R+1),R,0,2*Math.PI);
cxt.closePath();
cxt.fill();
}
}
}
}
/*更新时钟*/
function updateDigitTime(){
var changeNumArray = [];
var temp = /(\d)(\d):(\d)(\d):(\d)(\d)/.exec(new Date());
var NewData = [];
NewData.push(temp[1],temp[2],10,temp[3],temp[4],10,temp[5],temp[6]);
for(var i = data.length-1; i >=0 ; i--){
//时间发生变化
if(NewData[i] !== data[i]){
//将变化的数字值和在data数组中的索引存储在changeNumArray数组中
changeNumArray.push(i+'_'+(Number(data[i])+1)%10);
}
}
//增加小球
for(var i = 0; i< changeNumArray.length; i++){
addBalls.apply(this,changeNumArray[i].split('_'));
}
data = NewData.concat();
}
/*更新小球状态*/
function updateBalls(){
for(var i = 0; i < balls.length; i++){
balls[i].stepY += balls[i].disY;
balls[i].x += balls[i].stepX;
balls[i].y += balls[i].stepY;
if(balls[i].x > W + R || balls[i].y > H + R){
balls.splice(i,1);
i--;
}
}
}
/*增加要运动的小球*/
function addBalls(index,num){
var numArray = [1,2,3];
var colorArray = ["#3BE","#09C","#A6C","#93C","#9C0","#690","#FB3","#F80","#F44","#C00"];
for(var i = 0; i < digit[num].length; i++){
for(var j = 0; j < digit[num][i].length; j++){
if(digit[num][i][j] == 1){
var ball = {
x:14*(R+2)*index + j*2*(R+1)+(R+1),
y:i*2*(R+1)+(R+1),
stepX:Math.floor(Math.random() * 4 -2),
stepY:-2*numArray[Math.floor(Math.random()*numArray.length)],
color:colorArray[Math.floor(Math.random()*colorArray.length)],
disY:1
};
balls.push(ball);
}
}
}
}
/*渲染*/
function render(){
//重置画布宽度，达到清空画布的效果
canvas.height = 100;
//渲染时钟
for(var i = 0; i < data.length; i++){
renderDigit(i,data[i]);
}
//渲染小球
for(var i = 0; i < balls.length; i++){
cxt.beginPath();
cxt.arc(balls[i].x,balls[i].y,R,0,2*Math.PI);
cxt.fillStyle = balls[i].color;
cxt.closePath();
cxt.fill();
}
}
clearInterval(oTimer);
var oTimer = setInterval(function(){
//更新时钟
updateDigitTime();
//更新小球状态
updateBalls();
//渲染
render();
},50);
})();
canvas时间粒子的更多相关文章
- HTML5 Canvas时间效果
Canvas 时间效果: function clockTest() { var canvas = document.getElementById('canvas'); if (!(canvas &am ...
- HTML5 <Canvas>文字粒子化
文字粒子化,额或者叫小圆圈化... 1 <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> ...
- canvas放射粒子效果
这个也是别人的代码,就不多介绍了 写了些注释 body { overflow:hidden; margin:0; padding:0; background-color:#222222 } </ ...
- 基于HTML5 Canvas生成粒子效果的人物头像
前面我们分享过一个HTML5 Canvas实现的图像马赛克模糊效果,HTML5处理图片真的非常简单.今天我们要再利用HTML5 Canvas实现一个粒子效果的人物头像,你可以任意选择一张头像图片,接下 ...
- canvas多彩粒子星空背景
HTML5 canvas 实现多颜色粒子星空页面背景,喜欢的可以收藏.自己可以定义颜色,粒子透明度,粒子数量,粒子大小. 预览效果图如下: 1.获取canvas上下文,并且动态设置canvas尺寸和屏 ...
- canvas背景粒子动态变化动画
var canvas = document.getElementById("cas"); var ctx = canvas.getContext("2d"); ...
- canvas实现粒子星空连线
<!DOCTYPE html><html> <head> <meta charset="UTF-8"> <title>离 ...
- canvas粒子时钟
前面的话 本文将使用canvas实现粒子时钟效果 效果展示 点阵数字 digit.js是一个三维数组,包含的是0到9以及冒号(digit[10])的二维点阵.每个数字的点阵表示是7*10大小的二维数组 ...
- 带着canvas去流浪系列之九 粒子动画【华为云技术分享】
版权声明:本文为博主原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接和本声明. 本文链接:https://blog.csdn.net/devcloud/article/detai ...
随机推荐
- JVM（10）之 年老代收集器
开发十年,就只剩下这套架构体系了! >>> 在上一篇博文我们介绍了JAVA新生代收集器,本篇博文我们要讲的就是关于老年代的一些收集器.老年代存活的一般是大对象以及生命很顽强的对象 ...
- 【JAVA】java编译错误：编码UTF8/GBK的不可映射字符
环境: win7 cmd窗口编译 javac xx.java时报错 错误显示:错误:编码GBK的不可映射字符 背景: 分析发现是中文字符所在行报错了 查阅相关资料发现,是因为编译器设置为了utf-8, ...
- 2018-2-13-WPF-资源冻结
title author date CreateTime categories WPF 资源冻结 lindexi 2018-2-13 17:23:3 +0800 2018-2-13 17:23:3 + ...
- rpm2cpio - 从 RPM 软件包中提取 cpio 归档
SYNOPSIS rpm2cpio [filename] DESCRIPTION rpm2cpio 将指定的一个 .rpm 文件转换为一个 cpio 文档,输出到标准输出.如果给出了 `-' 参数,那 ...
- linux篇—Nginx反向代理负载均衡
一.环境准备 反向代理功能架构 3台web服务器,组建出web服务器集群 web01 10.0.0.7 172.16.1.7 web02 10.0.0.8 172.16.1.8 web03 10.0. ...
- spring整合消息队列rabbitmq
ps:本文只是简单一个整合介绍,属于抛砖引玉,具体实现还需大家深入研究哈.. 1.首先是生产者配置 ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 ...
- 如何使用Excel绘制甘特图
摘自:http://www.mifengtd.cn/articles/how-to-create-a-gantt-chart-in-excel.html 再造<优秀的时间管理和项目管理工具> ...
- Halo（七）
@ControllerAdvice 对Controller进行"切面"环绕 结合方法型注解 @ExceptionHandler 用于捕获Controller中抛出的指定类型的异常, ...
- MyBatis框架之异常处理
MyBatis框架定义了许多的异常类,之所以定义这么多的异常类,应该是将每一种异常情况都独立出来,这样在出现异常时,定位就很明确了.而我们平时写代码时,都是瞎搞一通,异常类大多也是随便定义,或者是使用 ...
- php min()函数 语法
php min()函数 语法 作用:从所有参数中找到最小数 语法:min(X,Y,Z) 或者min(array(X,Y,Z)) 参数:min函数中参数至少一个,可以多个参数,也可以是数组. 说明:如果 ...