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    <pre><code>&lt;html&gt; &lt;head&gt; &lt;title&gt;Canvas Pinball flippers by stirfry&lt;/title&gt; &lt;script type="application/x-javascript"&gt; /*THIS SCRIPT ADAPTED BY STIRFRY. SOURCE TEETHGRINDER no warranty or liability implied or otherwise. use at your own risk. No credit required. Enjoy.stirfry.thank(you)*/ var img = new Image(); //img.src = "flipper.gif";//right img.src="http://i39.tinypic.com/k1vq0x.gif" var img2 = new Image(); //img2.src = "flipper2.gif";//left img2.src ="http://i42.tinypic.com/14c8wht.gif" var gAngle = 0; gAngle = 60; stop = false; inertia = .8; vel = 10; k = 0.1; function drawagain(){ gAngle = 60; stop = false; inertia = .8; vel = 10; k = 0.1; draw() } function draw(){ var ctx = document.getElementById('canvas').getContext('2d'); ctx.save(); vel = ( vel * inertia ) + ( -gAngle * k ); gAngle += vel; ctx.fillStyle = 'rgb(255,255,255)'; ctx.fillRect (0, 0, 600, 600); ctx.translate(380, 480); //location of the system ctx.rotate( gAngle * Math.PI / 180 );//rotate first then draw the flipper ctx.drawImage(img, -105, -16); ctx.restore(); ctx.save(); ctx.translate(120, 480); //location of the system ctx.rotate( -1*gAngle * Math.PI / 180 );//rotate first then draw the flipper ctx.drawImage(img2, -18, -16); ctx.restore(); if( !stop ) setTimeout(draw, 30); } &lt;/script&gt; &lt;style type="text/css"&gt; body { margin: 20px; font-family: arial,verdana,helvetica; background: #fff;} h1 { font-size: 140%; font-weight:normal; color: #036; border-bottom: 1px solid #ccc; } canvas { border: 2px solid #000; float: left; margin-right: 20px; margin-bottom: 20px; } pre { float:left; display:block; background: rgb(238,238,238); border: 1px dashed #666; padding: 15px 20px; margin: 0 0 10px 0; } .gameLayer {position: absolute; top: 0px; left: 0px;} #scoreLayer {font-family: arial; color: #FF0000; left: 10px; font-size: 70%; } #windowcontainer {position:relative; height:300px;} &lt;/style&gt; &lt;/head&gt; &lt;body onload="draw()"&gt; &lt;div id="windowcontainer"&gt; &lt;canvas id="canvas" width="500" height="500"&gt;&lt;/canvas&gt; &lt;INPUT VALUE="flip" TYPE=BUTTON onClick="drawagain();"&gt;&lt;br/&gt; &lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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