首页手记终于看懂怎么写太极图了

终于看懂怎么写太极图了

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JavaScript

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>
        <canvas id="time" width="800" height="600" style="background-color: mediumpurple;"></canvas>
        <script type="text/javascript">
            var time=document.getElementById("time");
            var times=time.getContext("2d");
            var timew=time.width, timeh=time.height;

            times.fillStyle="#ffffff";
            times.beginPath();
            times.arc(timew/2,timeh/2,200,Math.PI*1.5,Math.PI/2,false);
            times.closePath();
            times.fill();

            times.fillStyle="#ffffff";
            times.beginPath();
            times.arc(timew/2,timeh/2,200,Math.PI*1.5,Math.PI/2,false);
            times.closePath();
            times.fill();

            times.fillStyle="#000000";
            times.beginPath();
            times.arc(timew/2,timeh/2,200,Math.PI/2,Math.PI*1.5,false);
            times.closePath();
            times.fill();

            times.fillStyle="#000000";
            times.beginPath();
            times.arc(timew/2,400,100,0,Math.PI*2,false);
            times.closePath();
            times.fill();

            times.fillStyle="#ffffff";
            times.beginPath();
            times.arc(timew/2,200,100,0,Math.PI*2,false);
            times.closePath();
            times.fill();

            times.fillStyle="#000000";
            times.beginPath();
            times.arc(timew/2,200,15,0,Math.PI*2,false);
            times.closePath();
            times.fill();

            times.fillStyle="#ffffff";
            times.beginPath();
            times.arc(timew/2,400,15,0,Math.PI*2,false);
            times.closePath();
            times.fill();
        </script>
    </body>
</html>

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