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我想要形狀,相互交叉。 交點應該是空的。在某處我讀到,這是通過順時針和逆時針方向來實現的。但我不能看着辦吧......如何在html5畫布標記中創建相交形狀
這是我的代碼:
<html>
<head>
<script>
with(document.getElementById('myCanvas').getContext('2d')){
shadowOffsetX = 10;
shadowOffsetY = 10;
shadowBlur = 20;
shadowColor = "rgba(0, 0, 0, .75)";
translate(50, 70);
scale(2, 2);
beginPath();
fillStyle = 'red';
strokeStyle = "white";
fillStyle = "#FFFF00";
beginPath();
arc(100,100,50,Math.PI*2,0,true);
closePath();
stroke();
fill();
strokeStyle = "white";
fillStyle = "#FFFF00";
beginPath();
arc(50,50,50,-Math.PI*2,0,true);
closePath();
stroke();
fill();
closePath();
fill();
}
</script>
</head>
<body>
<canvas
id = myCanvas
width = 400
height = 400
style = "border:1px solid #000"
>
</canvas>
</body>
什麼,我得到的是這樣的: http://dl.dropbox.com/u/1144075/Bild%207.png