canvas写的七巧板
<!DOCTYPE html>
<html><head>
<meta charset="UTF-8">
<title></title>
</head>
<style type="text/css">
#canvas{
border: 1px white solid;
margin: 0 auto;
display: block;
}
</style>
<script type="text/javascript">
var tangram=[
{p:[{x:600,y:200},{x:600,y:600},{x:400,y:400}],color:"#f9f51a"},
{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:"#fa8ecc"},
{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:"#67becf"},
{p:[{x:800,y:400},{x:800,y:800},{x:400,y:800}],color:"#f6ca29"},
{p:[{x:800,y:0},{x:800,y:400},{x:600,y:600},{x:600,y:200}],color:"#ef3d61"},
]
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, context) {
context.beginPath();
context.moveTo(piece.p[0].x, piece.p[0].y);
for (var i = 0; i < piece.p.length; i++) {
context.lineTo(piece.p[i].x, piece.p[i].y);
}
context.closePath();
context.fillStyle = piece.color;
context.fill();
}
</script>
<body>
<canvas id="canvas" width="" height="">
</body>
</html>