由多边形组成的旋转图案，如何构成一个长尾词？
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本文共计274个文字，预计阅读时间需要2分钟。
原创。效果见：[链接](http://runjs.cn/detail/9qhedgen)
1. 
2.JavaScript
head meta charset=utf-8 title 多边形组成的旋转图案 /title script var x=new Array(4, 4, 46, 46, 139, 139); var y=new Arra /script 原创。效果见：runjs.cn/detail/9qhedgen
1.[图片] Polygon7.png
2.[代码][JavaScript]代码
<html> <head> <meta charset="utf-8" /> <title>多边形组成的旋转图案</title> <script> var x=new Array(4, 4, 46, 46, 139,139); var y=new Array(-1,-158,-140,-28, 26, 76); var degree=0; function drawCanvas(){ var canvas= document.getElementById("myCanvas"); var g = canvas.getContext("2d"); g.clearRect(0,0,canvas.width, canvas.height); g.save(); g.translate(200,200); g.rotate(Math.PI/180*degree++); g.fillStyle="green"; for (var j=0;j<3;j++){ g.beginPath(); g.moveTo(x[0],y[0]); for (var i=1;i<x.length;i++) g.lineTo(x[i],y[i]); g.closePath(); g.fill(); g.rotate(Math.PI/180*120); } g.restore(); } </script> </head> <body onLoad="setInterval('drawCanvas()',200);"> <canvas id="myCanvas" width="600" height="600" > <p>Your browser does not support the canvas element!</p> </canvas> </body> </html>
本文共计274个文字，预计阅读时间需要2分钟。
原创。效果见：[链接](http://runjs.cn/detail/9qhedgen)
1. 
2.JavaScript
head meta charset=utf-8 title 多边形组成的旋转图案 /title script var x=new Array(4, 4, 46, 46, 139, 139); var y=new Arra /script 原创。效果见：runjs.cn/detail/9qhedgen
1.[图片] Polygon7.png
2.[代码][JavaScript]代码
<html> <head> <meta charset="utf-8" /> <title>多边形组成的旋转图案</title> <script> var x=new Array(4, 4, 46, 46, 139,139); var y=new Array(-1,-158,-140,-28, 26, 76); var degree=0; function drawCanvas(){ var canvas= document.getElementById("myCanvas"); var g = canvas.getContext("2d"); g.clearRect(0,0,canvas.width, canvas.height); g.save(); g.translate(200,200); g.rotate(Math.PI/180*degree++); g.fillStyle="green"; for (var j=0;j<3;j++){ g.beginPath(); g.moveTo(x[0],y[0]); for (var i=1;i<x.length;i++) g.lineTo(x[i],y[i]); g.closePath(); g.fill(); g.rotate(Math.PI/180*120); } g.restore(); } </script> </head> <body onLoad="setInterval('drawCanvas()',200);"> <canvas id="myCanvas" width="600" height="600" > <p>Your browser does not support the canvas element!</p> </canvas> </body> </html>