<!doctype?html>
<html>
<head>
<meta?charset="UTF-8">
<title>canvas七巧板</title>
</head>
<body>
<canvas?id="canvas"?style="border:1px?solid?#aaa;display:block;margin:50px?auto;">
但瀏覽器不支持canvas，請(qǐng)更換瀏覽器再試
</canvas>
<script>
var?tangram=[
{p:[{x:0,y:0},{x:800,y:0},{x:400,y:400}],color:"#caff67"},
{p:[{x:0,y:0},{x:400,y:400},{x:0,y:800}],color:"#67beef"},
{p:[{x:800,y:0},{x:800,y:400},{x:600,y:600},{x:600,y:200}],color:"#ef3d61"},
{p:[{x:600,y:200},{x:600,y:600},{x:400,y:400}],color:"#f9f1a"},
{p:[{x:400,y:400},{x:600,y:600},{x:400,y:800},{x:200,y:600}],color:"#a594c0"},
{p:[{x:200,y:600},{x:400,y:800},{x:0,y:800}],color:"#fa8ccc"},
{p:[{x:800,y:400},{x:800,y:800},{x:400,y:800}],color:"#f6ca29"}
]
window.onload=function()?{
var?canvas=document.getElementById("canvas");
canvas.width=800;
canvas.height=800;
var?context=canvas.getContext("2d");
for?(var?i?=?0;?i?<?tangram.length?;?i++)?
draw(tangram[i],context)
}
function?draw(piece,cxt){
cxt.beginPath();
cxt.moveTo(piece.p[0].x,piece.p[0].y);
for(var?i=1;i<piece.p.length;i++)
cxt.lineTo(piece.p[i].x,piece.p[i].y);
cxt.closePath();
cxt.fillStyle=piece.color;
cxt.fill();
}
</script>
</body>
</html>
0 回答
舉報(bào)
0/150
提交
取消
