画不出七巧板，是不是代码出错了？
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<canvas id="canvas1" style = "border:1px solid #aaa"></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:"#67becf"]},
{p:[{x:800,y:0},{x:800,y:400},{x:600,y:600},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},color:"#a594c0"]},
{p:[{x:200,y:600},{x:400,y:800},{x:0,y:800},color:"#fa8ecc"]},
{p:[{x:800,y:400},{x:800,y:800},{x:400,y:800},color:"#f6ca29"]}
]//设置七块板
window.onload = function(){
var canvas = document.getElementById("canvas1");
canvas.width = 1024;
canvas.height = 1024;
var context = canvas.getContext("2d");
for(var i=0;i < tangram.length;i++){
drwa(tangram[i],context);
}
}
function drwa(ps,ctx){
ctx.beginPath();
ctx.moveTo(ps.p[0].x,ps.p[0].y);
for(var i = 1; i < ps.p.length;i++){
ctx.lineTo(ps.p[i].x,ps.p[i].y);
}
ctx.closePath();
ctx.fillStyle = ps.color;
ctx.fill();
}//画图函数
</script>
</body>
</html>
游赛腾3回答
-
蜂之谷
中括号的位置错了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:"#67becf"}, {p:[{x:800,y:0},{x:800,y:400},{x:600,y:600}],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}],color:"#a594c0"}, {p:[{x:200,y:600},{x:400,y:800},{x:0,y:800}],color:"#fa8ecc"}, {p:[{x:800,y:400},{x:800,y:800},{x:400,y:800}],color:"#f6ca29"} ]//设置七块板
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