To be or not to be.That is a question!

---源于莎士比亚的《哈姆雷特》

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html5 高级动画精灵 

<!DOCTYPE HTML>
<html lang="en-US">
<head>
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <div style="position:absolute;top:50px;left:50px;"></div>
    <canvas id="canvas" width="80" height="98"></canvas>
    <script type="text/javascript">
    window.addEventListener("load", eventWindowLoaded,false);
    function eventWindowLoaded(){
        canvasApp();
    }
    function canvasApp(){
        var theCanvas=document.getElementById("canvas");
        var context=theCanvas.getContext('2d'); 

        var tileSheet=new Image();
        tileSheet.addEventListener('load',eventShipLoaded,false);
        tileSheet.src="2.png";
        var animationFrames=[1,2,3,4];
        var frameIndex=0;
        function eventShipLoaded(){
            startUp();
        }
        function drawScreen(){
            context.fillStyle="white";
            context.fillRect(0,0,500,500);

            var sourceX=Math.floor(animationFrames[frameIndex]%4)*64;
            var sourceY=Math.floor(animationFrames[frameIndex]%4)*64;

            context.drawImage(tileSheet,sourceX,sourceY,64,64,0,0,64,64);

            frameIndex++;
            if(frameIndex==animationFrames.length){
                frameIndex=0;
            }
        }
        function startUp(){
            setInterval(drawScreen, 300);
        }
    }
    </script>
</body>
</html>

posted on 2013-07-15 16:26  Ijavascript  阅读(403)  评论(0)  编辑  收藏  举报