mirror of
https://github.com/tweenjs/tween.js.git
synced 2025-12-08 20:16:12 +00:00
128 lines
2.6 KiB
HTML
128 lines
2.6 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>Tween.js / dynamic to</title>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<style>
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body {
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margin: 0px;
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}
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#target {
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font-size: 13px;
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padding: 0px 32px;
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}
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</style>
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<link href="css/style.css" media="screen" rel="stylesheet" type="text/css" />
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</head>
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<body>
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<div id="info" style="position: relative;">
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<h1><a href="http://github.com/sole/tween.js">tween.js</a></h1>
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<h2>07 _ dynamic to</h2>
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<p>tweening towards a moving target</p>
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</div>
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<div id="target"></div>
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<script src="../build/tween.min.js"></script>
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<script src="js/RequestAnimationFrame.js"></script>
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<script>
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init();
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animate();
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function init() {
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var width = 480;
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var height = 320;
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var target = document.getElementById('target');
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var canvas = document.createElement( 'canvas' );
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canvas.width = width;
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canvas.height = height;
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target.appendChild( canvas );
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var context = canvas.getContext( '2d' );
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var rabbit = { x: width - 50, y: 50 };
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new TWEEN.Tween( rabbit ).to( { x: width - 50, y: height - 50 }, 3000 ).onUpdate( function() {
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// draw background
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context.fillStyle = "rgb(240,250,240)";
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context.fillRect( 0, 0, width, height );
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// draw rabbit
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context.fillStyle = "rgb(150,150,150)";
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context.save();
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context.translate( this.x, this.y );
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context.beginPath();
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context.moveTo( 0, 0 );
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context.bezierCurveTo( 15, 0, 15, -40, 5, -30 );
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context.lineTo( 0, 0 );
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context.bezierCurveTo( -15, 0, -15, -40, -5, -30 );
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context.lineTo( 0, 0 );
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context.fill();
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context.beginPath();
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context.arc( 0, 0, 15, 0, Math.PI * 2, true );
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context.fill();
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context.restore();
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} ).start();
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var fox = { x: 50, y: 50 };
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new TWEEN.Tween( fox ).to( rabbit, 3000 ).onUpdate( function() {
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// draw fox
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context.fillStyle = "rgb(200,80,80)";
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context.save();
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context.translate( this.x, this.y - 13 );
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context.scale( 1.2, 1.2 );
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context.beginPath();
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context.moveTo( 4, 24 );
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context.lineTo( 8, 16 );
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context.lineTo( 14, 10 );
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context.lineTo( 15, 0 );
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context.lineTo( 9, -10 );
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context.lineTo( 2, 0 );
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context.lineTo( -2, 0 );
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context.lineTo( -9, -10 );
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context.lineTo( -15, 0 );
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context.lineTo( -14, 10 );
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context.lineTo( -8, 16 );
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context.lineTo( -4, 24 );
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context.closePath();
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context.fill();
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context.restore();
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} ).start();
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}
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function animate() {
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requestAnimationFrame( animate );
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TWEEN.update();
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}
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animate();
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</script>
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</body>
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</html>
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