扇形制造道理，底部一个纯色真相，内里2个雷同色彩的半圆，能够是白色,内部半圆按肯定角度变化，就能够产生出扇形结果
<html>
<head>
<meta charset="UTF-8">
<title>扇形绘制</title>
<style>
.shanxing{ position: relative; width: 200px; height: 200px; border-radius: 100px; background-color: yellow;
}
.sx1{ position: absolute; width: 200px; height: 200px; transform: rotate(0deg); clip: rect(0px,100px,200px,0px); /*这个clip属性用来绘制半圆，在clip的rect范围内的内容显示出来，运用clip属性，元素必需是absolute的 */ border-radius: 100px; background-color: #f00;
/*-webkit-animation: an1 2s infinite linear; */
}
.sx2{ position: absolute; width: 200px; height: 200px; transform: rotate(0deg); clip: rect(0px,100px,200px,0px); border-radius: 100px; background-color: #f00;
/*-webkit-animation: an2 2s infinite linear;*/
}
/*绘制一个60度扇形*/ .shanxing1 .sx1{transform: rotate(-30deg);} .shanxing1 .sx2{transform: rotate(-150deg);}
/*绘制一个85度扇形*/ .shanxing2 .sx1{transform: rotate(-45deg);} .shanxing2 .sx2{transform: rotate(-140deg);}
/*绘制一个向右扇形，90度扇形*/ .shanxing3 .sx1{transform: rotate(45deg);} .shanxing3 .sx2{transform: rotate(-45deg);}
/*绘制一个色彩扇形 */ .shanxing4 .sx1{transform: rotate(45deg);background-color: #fff;} .shanxing4 .sx2{transform: rotate(-45deg);background-color: #fff;}
/*绘制一个差别色彩半圆夹角 */ .shanxing5 .sx1{transform: rotate(45deg);background-color: #f00;} .shanxing5 .sx2{transform: rotate(-45deg);background-color: #0f0;}
</st
</head>
<body> 扇形制造道理，底部一个纯色真相，内里2个雷同色彩的半圆，能够是白色,内部半圆按肯定角度变化，就能够产生出扇形结果 <p>/绘制一个60度扇形/</p>
<div class="shanxing shanxing1">
<div class="sx1"></div>
<div class="sx2"></div>
</div>
<p>/*绘制一个85度扇形*/</p>
<div class="shanxing shanxing2">
<div class="sx1"></div>
<div class="sx2"></div>
</div>
<p>/*绘制一个向右扇形，90度扇形*/</p>
<div class="shanxing shanxing3">
<div class="sx1"></div>
<div class="sx2"></div>
</div>
<p>/*绘制一个色彩扇形 */</p>
<div class="shanxing shanxing4">
<div class="sx1"></div>
<div class="sx2"></div>
</div>
<p>/*绘制一个差别色彩半圆夹角 */</p>
<div class="shanxing shanxing5">
<div class="sx1"></div>
<div class="sx2"></div>
</div>
</body>
</html></pre>
下面这个是连系css+html5+javascript的一个更庞杂的圆环图形
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>circle</title>
<style type="text/css"> #myCanvas{} #nihao{ position: absolute; top:10px; z-index: 1;
}
</style>
</head>
<body style="background:#FBFBFB;">
<canvas id="myCanvas" width="300" height="150" style="border:1px solid #d3d3d3;"> not suopport canvas </canvas>
<div id="nihao"></div>
<script>
var text=document.getElementById("nihao");
text.innerHTML="woshiwuxinguo"; var i=0.9;//这里默认设置好评率为90%
var c=document.getElementById("myCanvas"); var ctx=c.getContext("2d");
ctx.beginPath();
ctx.lineWidth=10;
ctx.strokeStyle="gray";
ctx.arc(100,75,50,0,2*Math.PI);
ctx.fillStyle="#FBFBFB";
ctx.fill();
ctx.stroke();
ctx.beginPath();
ctx.translate(100,75);
ctx.rotate(-90*Math.PI/180);
ctx.strokeStyle="#FFCFCF";
ctx.arc(0,0,50,0,2*Math.PI*i);
ctx.stroke();
c.addEventListener("mouseover", function(e) {
ctx.beginPath();
ctx.strokeStyle="gray";
ctx.arc(0,0,50,0,2*Math.PI);
ctx.stroke(); var finish=i; var step=0; var internal=setInterval(function(e) {
console.log("step:"+step); if(step<finish){
step=step+0.01;
ctx.beginPath();
ctx.strokeStyle="#FFCFCF";
ctx.arc(0,0,50,0,2*Math.PI*step);
ctx.stroke();
}else{
clearInterval(internal);
}
}, 0.5)
}, true) </script>
</body>
</html></pre>
以上就是CSS怎样完成恣意角度的扇形（代码示例）的细致内容，更多请关注ki4网别的相干文章！
