老师，canvas能用Eclipse工具写吗?
4 回答
好嘞，已经使用webstorm啦，但是效果咋实现不了呢，
帮忙看下哪里有错，为毛运行不出七巧板的效果来呢，canvas内总是空白一片
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<canvas id="canvas" style="border: 1px solid #aaa; display: block; margin: 50px auto;">
此浏览器不支持canvas
</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},{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:"#fa8ecc"},
{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.move(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>
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