只有框框没有七色板为什么代码正确吧？-慕课网

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只有框框没有七色板为什么代码正确吧？

来源：2-2 绘制直线、多边形和七巧板

qq_T_T若是人间四月天_0

2016-03-15 00:03

<html>

<head>

<title>canvas01</title>

</head>

<body>

var tangram=[//数组

{p:[{x:0,y:0},{x:800,y:0},{x:400,y:400}],color:"#caff67"},//类的对象

{p:[{x:0,y:0},{x:400,y:400},{x:0,y:800}],color:"#67bcef"},

{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:"#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:"#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[i].y);

cxt.closePath();

cxt.fillStyle=piece.color;

cxt.fill();

}

</script>

</body>

</html>

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