html5 canvas创意个性圆形时钟代码
本文最后更新于74 天前,其中的信息可能已经过时,[email protected]
[precode]
<!DOCTYPE html>    
<html>    
<head>    
<meta charset="UTF-8">    
<title>时钟DEMO</title>    
<style>    
		body{    
			background-color:black;    
		}    
		div{    
			margin:auto;    
			width:500px;    
position:absolute;    
position: absolute;    
left:50%;    
top:50%;    
margin-left:-250px;    
margin-top:-250px;    
		}    
	</style>    
</head>    
<body>    
<div>    
<canvas id="canvas" width="500" height="500" />    
</div>    
<script type="text/javascript">  
var canvas=document.getElementById("canvas");var ctx=canvas.getContext("2d");ctx.strokeStyle='#7FFFD4';ctx.lineWidth=3;ctx.shadowBlur=5;ctx.shadowColor='#7FFFD4';var milliseconds=0;var minutes=0;var hour=0;var date="";var ctxBack=canvas.getContext("2d");var numBack=canvas.getContext("2d");ctxBack.lineWidth=1;ctxBack.shadowBlur=0;ctxBack.shadowColor='#F0F8FF';function pageInit(){showTime();showBack();drawSecPin();drawMinPin();drawHouPin();setPoint();setNum();}
function setNum(){numBack.save();numBack.translate(250,250);numBack.beginPath();numBack.fillStyle='#7FFFD4';numBack.font="30px Helvetica";for(var i=0;i<60;i++){if(i%5==0){numBack.lineWidth=5;var xPoint=Math.sin(i*6*2*Math.PI/360)*195;var yPoint=-Math.cos(i*6*2*Math.PI/360)*195;numBack.fillText(i==0?12:i/5,i==0?-15:xPoint-10,i==0?-185:i<=30?yPoint+5:yPoint+10);}}
numBack.stroke();numBack.closePath();numBack.restore();}
function drawSecPin(){ctxBack.save();ctxBack.translate(250,250);ctxBack.rotate(milliseconds/60*2*Math.PI);ctxBack.beginPath();ctxBack.strokeStyle='#AFEEEE';ctxBack.lineWidth=1;ctxBack.lineJoin="bevel";ctxBack.miterLimit=10;ctxBack.moveTo(0,30);ctxBack.lineTo(3,-175);ctxBack.lineTo(13,-165);ctxBack.lineTo(0,-210);ctxBack.lineTo(-13,-165);ctxBack.lineTo(-3,-175);ctxBack.lineTo(0,30);ctxBack.stroke();ctxBack.closePath();ctxBack.restore();}
function drawMinPin(){ctxBack.save();ctxBack.translate(250,250);ctxBack.rotate(minutes*6*Math.PI/180);ctxBack.beginPath();ctxBack.strokeStyle='#20B2AA';ctxBack.lineWidth=1;ctxBack.lineJoin="bevel";ctxBack.miterLimit=10;ctxBack.moveTo(0,20);ctxBack.lineTo(3,-145);ctxBack.lineTo(10,-135);ctxBack.lineTo(0,-180);ctxBack.lineTo(-10,-135);ctxBack.lineTo(-3,-145);ctxBack.lineTo(0,20);ctxBack.stroke();ctxBack.closePath();ctxBack.restore();}
function drawHouPin(){ctxBack.save();ctxBack.translate(250,250);ctxBack.rotate(hour*30*Math.PI/180);ctxBack.beginPath();ctxBack.strokeStyle='#87CEFA';ctxBack.lineWidth=1;ctxBack.lineJoin="bevel";ctxBack.miterLimit=10;ctxBack.moveTo(0,20);ctxBack.lineTo(3,-110);ctxBack.lineTo(10,-100);ctxBack.lineTo(0,-150);ctxBack.lineTo(-10,-100);ctxBack.lineTo(-3,-110);ctxBack.lineTo(0,20);ctxBack.stroke();ctxBack.closePath();ctxBack.restore();}
function setPoint(){ctxBack.beginPath();ctxBack.fillStyle='black';ctxBack.arc(250,250,3,0,2*Math.PI);ctxBack.stroke();}
function showBack(){for(var i=0;i<60;i++){ctxBack.save();ctxBack.translate(250,250);ctxBack.rotate(i/60*2*Math.PI);ctxBack.beginPath();ctxBack.strokeStyle='#7FFFD4';ctxBack.moveTo(0,-250);ctxBack.lineWidth=i%5==0?5:2;ctxBack.lineTo(0,-230);ctxBack.stroke();ctxBack.closePath();ctxBack.restore();}
ctxBack.beginPath();ctxBack.arc(250,250,230,0,2*Math.PI);ctxBack.stroke();}
function degToRad(degree){var result;var factor=Math.PI/180;if(degree==0){result=270*factor;}else{result=degree*factor;}
return result;}
function showTime(){var now=new Date();var today=now.toLocaleDateString();var time=now.toLocaleTimeString();var day=now.getDay();var hrs=now.getHours();var min=now.getMinutes();var sec=now.getSeconds();var mil=now.getMilliseconds();var smoothsec=sec+(mil/1000);var smoothmin=min+(smoothsec/60);var hours=hrs+(smoothmin/60);milliseconds=smoothsec;minutes=smoothmin;hour=hours;switch(day){case 1:date='一'
break;case 2:date='二'
break;case 3:date='三'
break;case 4:date='四'
break;case 5:date='五'
break;case 6:date='六'
break;case 0:date='日'
break;}
gradient=ctx.createRadialGradient(250,250,5,250,250,300);gradient.addColorStop(0,"#03303a");gradient.addColorStop(1,"black");ctx.fillStyle=gradient;ctx.fillRect(0,0,500,500);ctx.beginPath();ctx.strokeStyle='#87CEFA';ctx.arc(250,250,215,degToRad(0),degToRad((hours*30)-90));ctx.stroke();ctx.beginPath();ctx.strokeStyle='#20B2AA';ctx.arc(250,250,220,degToRad(0),degToRad(smoothmin*6-90));ctx.stroke();ctx.beginPath();ctx.strokeStyle='#AFEEEE';ctx.arc(250,250,225,degToRad(0),degToRad(smoothsec*6-90));ctx.stroke();ctx.font="25px Helvetica Bold";ctx.fillStyle='#7FFFD4';ctx.fillText(today+"/星期"+date,150,230);ctx.font="23px Helvetica Bold";ctx.fillStyle='#7FFFD4';ctx.fillText(time,190,280);}
setInterval(pageInit,50);  
</script>
</body>    
</html>

[/precode]

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Source: github.com/k4yt3x/flowerhd
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