画布旋转――HTML5之特效
translate.htML内容如下:
[html]
!DOCTYPE HTML>
html>
head>
script type="text/javascript" src="jquery-1.7.2.min.js">
/script>
script type="text/javascript" src="translate.js">
/script>
script type="text/javascript">
$(document).ready(function(){
}
);
/script>
/head>
body>
canvas id="simple">
/canvas>
/body>
/html>
!DOCTYPE HTML>
html>
head>
script type="text/javascript" src="jquery-1.7.2.min.js">
/script>
script type="text/javascript" src="translate.js">
/script>
script type="text/javascript">
$(document).ready(function(){
}
);
/script>
/head>
body>
canvas id="simple">
/canvas>
/body>
/html>
translate.js代码如下:
[javascript]
(function(){
VAR canvas=null,
context=null,
angle=0;
function resetCanvas(){
canvas=document.getElementById("simple");
canvas.width=window.innerWidth;
canvas.height=window.innerHeight;
context=canvas.getContext("2d");
}
function aniMATE(){
context.save();
try{
//清除画布
context.clearRect(0, 0, canvas.width, canvas.height);
//设置原点
context.translate(canvas.width * 0.5, canvas.height * 0.5);
//旋转角度
context.rotate(angle);
//设置填充颜色
context.fillStyle = "#FF0000";
//绘制矩形
context.fillRect(-30, -30, 60, 60);
angle += 0.05 * Math.PI;
}
finally{
context.reStore();
}
}
$(window).bind("resize",resetCanvas).bind("reorient",resetCanvas);
$(document).ready(function(){
window.scrollTo(0,1);
resetCanvas();
setInterval(animate,40);
}
);
}
)();
(function(){
var canvas=null,
context=null,
angle=0;
function resetCanvas(){
canvas=document.getElementById("simple");
canvas.width=window.innerWidth;
canvas.height=window.innerHeight;
context=canvas.getContext("2d");
}
function animate(){
context.save();
try{
//清除画布
context.clearRect(0, 0, canvas.width, canvas.height);
//设置原点
context.translate(canvas.width * 0.5, canvas.height * 0.5);
//旋转角度
context.rotate(angle);
//设置填充颜色
context.fillStyle = "#FF0000";
//绘制矩形
context.fillRect(-30, -30, 60, 60);
angle += 0.05 * Math.PI;
}
finally{
context.restore();
}
}
$(window).bind("resize",resetCanvas).bind("reorient",resetCanvas);
$(document).ready(function(){
window.scrollTo(0,1);
resetCanvas();
setInterval(animate,40);
}
);
}
)();
用支持HMTL5的浏览器打开translate.html就可以看到一个旋转的红色方块
translate.html内容如下:
[html]
!DOCTYPE HTML>
html>
head>
script type="text/javascript" src="jquery-1.7.2.min.js">
/script>
script type="text/javascript" src="translate.js">
/script>
script type="text/javascript">
$(document).ready(function(){
}
);
/script>
/head>
body>
canvas id="simple">
/canvas>
/body>
/html>
!DOCTYPE HTML>
html>
head>
script type="text/javascript" src="jquery-1.7.2.min.js">
/script>
script type="text/javascript" src="translate.js">
/script>
script type="text/javascript">
$(document).ready(function(){
}
);
/script>
/head>
body>
canvas id="simple">
/canvas>
/body>
/html>
translate.js代码如下:
[javascript]
(function(){
var canvas=null,
context=null,
angle=0;
function resetCanvas(){
canvas=document.getElementById("simple");
canvas.width=window.innerWidth;
canvas.height=window.innerHeight;
context=canvas.getContext("2d");
}
function animate(){
context.save();
try{
//清除画布
context.clearRect(0, 0, canvas.width, canvas.height);
//设置原点
context.translate(canvas.width * 0.5, canvas.height * 0.5);
//旋转角度
context.rotate(angle);
//设置填充颜色
context.fillStyle = "#FF0000";
//绘制矩形
context.fillRect(-30, -30, 60, 60);
angle += 0.05 * Math.PI;
}
finally{
context.restore();
}
}
$(window).bind("resize",resetCanvas).bind("reorient",resetCanvas);
$(document).ready(function(){
window.scrollTo(0,1);
resetCanvas();
setInterval(animate,40);
}
);
}
)();
(function(){
var canvas=null,
context=null,
angle=0;
function resetCanvas(){
canvas=document.getElementById("simple");
canvas.width=window.innerWidth;
canvas.height=window.innerHeight;
context=canvas.getContext("2d");
}
function animate(){
context.save();
try{
//清除画布
context.clearRect(0, 0, canvas.width, canvas.height);
//设置原点
context.translate(canvas.width * 0.5, canvas.height * 0.5);
//旋转角度
context.rotate(angle);
//设置填充颜色
context.fillStyle = "#FF0000";
//绘制矩形
context.fillRect(-30, -30, 60, 60);
angle += 0.05 * Math.PI;
}
finally{
context.restore();
}
}
$(window).bind("resize",resetCanvas).bind("reorient",resetCanvas);
$(document).ready(function(){
window.scrollTo(0,1);
resetCanvas();
setInterval(animate,40);
}
);
}
)();
用支持HMTL5的浏览器打开translate.html就可以看到一个旋转的红色方块
觉得可用,就经常来吧! 欢迎评论哦! html5教程,巧夺天工,精雕玉琢。小宝典献丑了!
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