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canvas繪制一個(gè)常用的emoji表情

更新時(shí)間：2017年03月30日 14:07:41 作者：fe_kevin

本文主要介紹了canvas繪制一個(gè)常用的emoji表情的示例代碼。具有很好的參考價(jià)值，下面跟著小編一起來(lái)看下吧

效果圖：

代碼如下：

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <title>表情</title>
 <meta name="viewport" content="initial-scale=1, maximum-scale=1">
 <meta name="apple-mobile-web-app-capable" content="yes">
 <meta name="apple-mobile-web-app-status-bar-style" content="black">
</head>
<style type="text/css">
 *{
 margin: 0;
 padding: 0;
 }
 body{
  overflow:hidden;
 }
 canvas{
 /*background: #000;*/
 /*opacity: 0.5;*/
 }
</style>
<body>
 <canvas id="canvas"></canvas>
</body>
<script type="text/javascript">
(function(win,el){
 var canvas = document.querySelector(el),
 ctx = canvas.getContext('2d');
 canvas.width = win.innerWidth;
 canvas.height = win.innerHeight;

 ctx.translate(canvas.width/2,canvas.height/2);//將畫布移到屏幕中心

 // 繪制圓形頭部
 ctx.beginPath();
 var grd=ctx.createLinearGradient(0,-100,0,100);
 grd.addColorStop(0,'#FDF390');
 grd.addColorStop(1,'#B97814');

 ctx.fillStyle = grd;
 ctx.strokeStyle = '#A86B14';
 ctx.lineWidth = 5;
 ctx.arc(0,0,100,0,2*Math.PI);
 ctx.fill();
 ctx.stroke();

 //嘴巴
 ctx.beginPath();
 ctx.lineCap = 'round';
 ctx.lineJoin = 'round';
 ctx.fillStyle = '#754800';
 ctx.strokeStyle = '#935B06';
 ctx.moveTo(-63,-2);
 ctx.quadraticCurveTo(-37,90,49,46);
 ctx.lineTo(-63,-2);
 ctx.fill();
 ctx.stroke();

 // 牙齒
 ctx.beginPath();
 ctx.lineWidth = 8;
 ctx.strokeStyle = '#FFF';
 ctx.moveTo(-58,6);
 ctx.lineTo(38,47);
 ctx.stroke();

 // 眼淚左
 ctx.beginPath();
 var yanlei = ctx.createLinearGradient(-48,-48,-97,30);
 yanlei.addColorStop(0,'#90C1C8');
 yanlei.addColorStop(1,'#5394C8');

 var yanleib = ctx.createLinearGradient(-48,-48,-97,30);
 yanleib.addColorStop(0,'#7CAEA7');
 yanleib.addColorStop(1,'#245F6A');

 ctx.strokeStyle = yanleib;
 ctx.fillStyle = yanlei;
 ctx.moveTo(-56,-37);
 ctx.lineTo(-96,25);
 ctx.quadraticCurveTo(-90,50,-82,56);
 ctx.lineTo(-29,-27);
 ctx.stroke();
 ctx.fill();

 // 眼淚右
 ctx.beginPath();
 var yanlei = ctx.createLinearGradient(-48,-48,-97,30);
 yanlei.addColorStop(0,'#90C1C8');
 yanlei.addColorStop(1,'#5394C8');
 ctx.strokeStyle = yanleib;
 ctx.fillStyle = yanlei;
 ctx.moveTo(33,35);
 ctx.lineTo(34,91);
 ctx.quadraticCurveTo(55,88,55,78);
 ctx.lineTo(53,44);
 ctx.stroke();
 ctx.fill();

 // 眼睛
 ctx.beginPath();
 ctx.lineJoin = 'round';
 ctx.lineCap = 'round';
 ctx.lineWidth = 5;
 ctx.fillStyle = '#714801';
 ctx.strokeStyle = '#714801'
 ctx.moveTo(-58,-39);
 ctx.quadraticCurveTo(-32,-41,-25,-27);
 ctx.quadraticCurveTo(-42,-36,-58,-39);
 ctx.fill();
 ctx.stroke();

 // 麒麟臂
 ctx.beginPath();
 var qlgrd=ctx.createRadialGradient(30,-19,5,30,-19,60);
 qlgrd.addColorStop(0,'#F7D25F');
 qlgrd.addColorStop(1,'#EEB63B');

 ctx.lineWidth = 5;
 ctx.strokeStyle = '#CE7F12';
 ctx.fillStyle = qlgrd;
 ctx.moveTo(78,87);
 ctx.quadraticCurveTo(100,74,81,-19);
 ctx.quadraticCurveTo(68,-45,49,-39);
 ctx.quadraticCurveTo(59,-35,59,-26);
 ctx.quadraticCurveTo(36,-62,-10,-59);
 ctx.quadraticCurveTo(-14,-55,-9,-50);
 ctx.quadraticCurveTo(18,-48,33,-26);
 ctx.quadraticCurveTo(0,-54,-28,-48);
 ctx.quadraticCurveTo(-37,-42,-28,-33);
 ctx.quadraticCurveTo(-1,-37,19,-15);
 ctx.quadraticCurveTo(-5,-37,-34,-28);
 ctx.quadraticCurveTo(-36,-21,-27,-18);
 ctx.quadraticCurveTo(-13,-17,11,2);
 ctx.quadraticCurveTo(-10,-15,-27,-11);
 ctx.quadraticCurveTo(-30,-6,-24,1);

 ctx.lineTo(1,12);
 ctx.quadraticCurveTo(7,29,41,42);
 ctx.quadraticCurveTo(43,63,52,81);
 ctx.quadraticCurveTo(64,92,78,87);
 ctx.stroke();
 ctx.fill();

})(window,'#canvas')
</script>
</html>

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