HTML5 贝塞尔绘画桃心

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>贝塞尔法画桃心</title>
</head>

<body>
    <canvas id="mycavas" width="300" height="300" > </canvas>
    <script type="application/javascript" >
    var canvas = document.getElementById("mycavas");
    var context = canvas.getContext("2d");
    context.beginPath();
    context.fillStyle="#c00";
    context.moveTo(75,40)
    //左半边的桃心，从凹进去的地方开始画
    context.bezierCurveTo(75,37,70,25,50,25);
    context.bezierCurveTo(20,25,20,62.5,20,62.5);
    context.bezierCurveTo(20,80,40,102,75,120);
    
    //右半边的桃心，从桃心尖尖部分开始画
    context.bezierCurveTo(110,102,130,80,130,62.5);
    context.bezierCurveTo(130,62.5,130,25,100,25);
    context.bezierCurveTo(85,25,75,35,75,40);
    context.stroke();
    context.fill();
    </script>
</body>
</html>
效果图：
posted on 2016-07-06 17:09 王铭霞阅读(495) 评论(0) 编辑收藏举报