Canvas Lab单车动画，HTML5动画

时间：2013-06-09 12:41 来源：互联网作者：源码搜藏浏览：次收藏挑错推荐打印

<html>
<head>
<title>Canvas Lab单车动画，HTML5动画</title>
</head>
	<script type="text/javascript">
		var framecounter = 800;//为了完成作业，无耻了点，在这里设置变量……
		var direction = "left";
		function drawBikeBody () {
			var canvas = document.getElementById('diagonal');
			var context = canvas.getContext('2d');
			context.lineWidth = 3;

context.beginPath();
			context.moveTo(0,0);
			context.lineTo(150,0);
			context.lineTo(100,100);
			context.closePath();
			context.moveTo(100,100);
			context.lineTo(200,75);//后轮轴承点
			context.lineTo(150,0);
			//下面那个一个脚踏
			context.moveTo(100,100);
			context.lineTo(110,120);
			context.lineTo(120,120);
			context.moveTo(110,120);
			context.lineTo(100,120);
			//另一个脚踏
			context.moveTo(100,100);
			context.lineTo(90,80);
			context.lineTo(100,80);
			context.moveTo(90,80);
			context.lineTo(80,80);
			//座包
			context.moveTo(150,0);
			context.lineTo(160,-20);
			context.lineTo(175,-20);
			context.moveTo(160,-20);
			context.lineTo(135,-20);
			//扶手
			context.moveTo(0,0);
			context.lineTo(15,-30);
			context.lineTo(10,-35);
			context.lineTo(20,-40);
			context.lineTo(40,-40);
			//前轮轴承
			context.moveTo(0,0);
			context.lineTo(-35.5,75);//前轮轴承点
			
			//前轮

context.moveTo(75-35.5,75);//去掉这个目测不行啊，貌似context.arc()方法里有lineTo
			context.arc(-35.5,75,75,0,Math.PI*2,true);

//后轮
			context.moveTo(200+75,75);
			context.arc(200,75,75,0,Math.PI*2,true);
		}

context.clearRect(0, 0, 800, 600);
			context.save();
			context.translate(framecounter,300);
			drawBikeBody();
			context.stroke();
			context.restore();

context.save();
			context.translate(framecounter,300);

drawForcePiece1();
			
			context.stroke();
			context.restore();

context.save();
			context.translate(framecounter,300);
			drawForcePiece2();
			
			context.stroke();
			context.restore();
			if (direction==="left") {
				framecounter--;
			}else{
				framecounter++;
			}
		}

function move() {
			var interal = setInterval(function () {
                drawBike();
            }, 10);
		}		
		window.addEventListener("load",move,true);

</script>
	<body>
		<canvas id="diagonal" width="800" height="600" style="border:1px dashed">Please update your brower to the newest version!</canvas>
		<br>
		<button id="reset" onclick="framecounter=800;">Reset</button>
		<button id="left" onclick="direction='left'">Go Left</button>
		<button id="right" onclick="direction='ture'">Go Right</button>
	</body>

</html>

运行代码保存代码复制代码提示：您可以先修改部分代码再运行，保存代码功能在Firefox下无效。

运用HTML5实现的单车动画，运行一下效果你就明白了，不过不要在IE8下测试，没效果的。请在支持最新HTML3和CSS3的浏览器下测试，祝您好运。 Canvas Lab单车动画，HTML5动画由源码搜藏网整理,转载请注明出处http://www.codesocang.com/texiao/youxitexiao/5204.html

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