HTML5 Canvas旋转文本卡通片-HTML教程-爱易网页

HTML5 Canvas旋转文本卡通片

日期：2014-05-16　浏览次数：20862 次

HTML5 Canvas旋转文本动画
点这里可以看动画效果:
http://www.108js.com/article/article3/zip1/text.html

效果图：

代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="gbk">
<title>旋转文本</title>
</head>
<body>
<canvas id="canvas" width="600" height="300"></canvas>
<script>

var canvas = document.getElementById("canvas");  
      var context = canvas.getContext('2d');  
      var Width=canvas.width;
      var Height=canvas.height;
      var  s = "HTML 5 旋转";
      context.font="lighter 1.5em palatino";
      var colors = ["orange","blue","red"];
 
      function drawText(s,x,y){  
        context.save();   
        //   旋转文本
       for (var i = 0; i < 12; i++) {
         context.rotate(30 * Math.PI / 180);
         context.strokeStyle=colors[i % 3];
         context.strokeText(s, 0, 0);
       }
       context.restore();
     }
 
     var angle=0;
     var loop = setInterval(function () {   
        context.clearRect(0, 0, canvas.width, canvas.height);  
         context.save();
        // 平移原点到图形环境的中心
        context.translate(Width/2,Height/2);
        context.rotate(angle * Math.PI / 180);
        drawText(s,Width/2,Height/2,angle);
        context.restore();
        angle = (angle + 10) % 360;   
   }, 500);

</script>
</body>
</html>

热情奉献：HTML5 Canvas绘图与动画学习59例源码：
http://www.108js.com/example.html