samien
/
three.js
réplica de https://github.com/mrdoob/three.js.git


			
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							<!doctype html>
<html lang="en">
	<head>
		<title>three.js canvas - geometry - cube</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<style>
			body {
				font-family: Monospace;
				background-color: #f0f0f0;
				margin: 0px;
				overflow: hidden;
			}
		</style>
	</head>
	<body>

		<script src="../build/Three.js"></script>

		<script src="js/RequestAnimationFrame.js"></script>
		<script src="js/Stats.js"></script>
		
		<script src="../src/core/Geometry.js"></script>
		<script src="../src/extras/geometries/CubeGeometry.js"></script>
		<script src="../src/extras/geometries/CylinderGeometry.js"></script>
		<script src="../src/extras/geometries/TorusGeometry.js"></script>
		<script src="../src/extras/geometries/SubdivisionGeometry.js"></script>
		
		<script src="fonts/helvetiker_regular.typeface.js"></script>
		
		<script>

			var container, stats;

			var camera, scene, renderer;

			var cube, plane;

			var targetRotation = 0;
			var targetRotationOnMouseDown = 0;

			var mouseX = 0;
			var mouseXOnMouseDown = 0;

			var windowHalfX = window.innerWidth / 2;
			var windowHalfY = window.innerHeight / 2;

		
			// Create subdivision geometry  
			function createSubdivision(geometry, repeats) {
				repeats = (repeats === undefined ) ? 1 : repeats;
				var smooth = geometry;
				while (repeats--) {
					smooth = new THREE.SubdivisionGeometry(smooth);
				}
				return smooth;
			}
			
			init();
			animate();

			function init() {

				container = document.createElement( 'div' );
				document.body.appendChild( container );

				var info = document.createElement( 'div' );
				info.style.position = 'absolute';
				info.style.top = '10px';
				info.style.width = '100%';
				info.style.textAlign = 'center';
				info.innerHTML = 'Drag to spin the cube';
				container.appendChild( info );

				camera = new THREE.Camera( 70, window.innerWidth / window.innerHeight, 1, 1000 );
				camera.position.y = 150;
				camera.position.z = 500;
				camera.target.position.y = 150;

				scene = new THREE.Scene();

				
				// Cube

				var materials = [];

				for ( var i = 0; i < 6; i ++ ) {

					materials.push( [ new THREE.MeshBasicMaterial( { color: Math.random() * 0xffffff, wireframe: false } ) ] );

				}
				
				
				//geometry = new THREE.CubeGeometry( 200, 200, 200, 2, 2, 2, materials );
				geometry = new THREE.CubeGeometry( 200, 200, 200, 1, 1, 3, materials );
				
				//geometry = new THREE.TorusGeometry( 100, 60, 4, 8, Math.PI*2 );
				//geometry = new THREE.SphereGeometry( 200, 1, 1);
				//geometry = new THREE.CylinderGeometry( 50, 50, 200 );
				// geometry = new THREE.TextGeometry( '&', {
				// 						size: 200,
				// 						height: 50,
				// 						curveSegments: 1,
				// 						font: "helvetiker"
				// 
				// 					});
					
				//PlaneGeometry not supported
				
				
				// quick fix for duplicated vertices
				// either mergeVertices or checkDupVertices(true) works
				geometry.mergeVertices();
				geometry.checkDupVertices( true );
				
				
				//console.log(geometry);
				
				smooth = createSubdivision(geometry, 2);
				
				var PI2 = Math.PI * 2;
				var program = function ( context ) {

					context.beginPath();
					context.arc( 0, 0, 1, 0, PI2, true );
					context.closePath();
					context.fill();

				}
				
				var drawText = function(i) {
					
					return function ( context ) {

						context.beginPath();
						context.scale(0.1,-0.1);

						context.fillText(i, 0,0);
						
					};
					

				}


				group = new THREE.Object3D();
				group.position.y = 150;
				scene.add( group );

				// Debug new Points
				// for ( var i = 0; i < smooth.vertices.length; i++ ) {
				// 
				// 	particle = new THREE.Particle( new THREE.ParticleCanvasMaterial( { color: Math.random() * 0x808008 + 0x808080, program: program } ) );
				// 	particle.position = smooth.vertices[i].position;
				// 	var pos = smooth.vertices.position
				// 	particle.scale.x = particle.scale.y = 5;
				// 	group.add( particle );
				// }
				
				//Debug original points
				// for ( var i = 0; i < geometry.vertices.length; i++ ) {
				// 
				// 	particle = new THREE.Particle( new THREE.ParticleCanvasMaterial( { color: Math.random() * 0x808008 + 0x808080, program: drawText(i) } ) );
				// 	particle.position = smooth.vertices[i].position;
				// 	var pos = geometry.vertices.position
				// 	particle.scale.x = particle.scale.y = 30;
				// 	group.add( particle );
				// }
				

				 cube = new THREE.Mesh( smooth, new THREE.MeshBasicMaterial( { color: 0x405040, wireframe:true,  opacity:0.8 } ) ); 
				//cube = new THREE.Mesh( smooth, new THREE.MeshFaceMaterial() ); 
				// material =  new THREE.MeshPhongMaterial( { color: 0xffffff, shading: THREE.FlatShading } );
				// 	 new THREE.MeshPhongMaterial( { color: 0xffffff, shading: THREE.SmoothShading } );
				
				//
				cube.doubleSided = true;
				cube.position.y = 150;
				cube.overdraw = true;
				scene.add( cube );

				// Plane

				plane = new THREE.Mesh( new THREE.PlaneGeometry( 200, 200 ), new THREE.MeshBasicMaterial( { color: 0xe0e0e0 } ) );
				plane.rotation.x = - 90 * ( Math.PI / 180 );
				plane.overdraw = true;
				scene.add( plane );

				renderer = new THREE.CanvasRenderer();
				renderer.setSize( window.innerWidth, window.innerHeight );

				container.appendChild( renderer.domElement );

				stats = new Stats();
				stats.domElement.style.position = 'absolute';
				stats.domElement.style.top = '0px';
				container.appendChild( stats.domElement );

				document.addEventListener( 'mousedown', onDocumentMouseDown, false );
				document.addEventListener( 'touchstart', onDocumentTouchStart, false );
				document.addEventListener( 'touchmove', onDocumentTouchMove, false );
			}

			//

			function onDocumentMouseDown( event ) {

				event.preventDefault();

				document.addEventListener( 'mousemove', onDocumentMouseMove, false );
				document.addEventListener( 'mouseup', onDocumentMouseUp, false );
				document.addEventListener( 'mouseout', onDocumentMouseOut, false );

				mouseXOnMouseDown = event.clientX - windowHalfX;
				targetRotationOnMouseDown = targetRotation;
			}

			function onDocumentMouseMove( event ) {

				mouseX = event.clientX - windowHalfX;

				targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;
			}

			function onDocumentMouseUp( event ) {

				document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
				document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
				document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
			}

			function onDocumentMouseOut( event ) {

				document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
				document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
				document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
			}

			function onDocumentTouchStart( event ) {

				if ( event.touches.length == 1 ) {

					event.preventDefault();

					mouseXOnMouseDown = event.touches[ 0 ].pageX - windowHalfX;
					targetRotationOnMouseDown = targetRotation;

				}
			}

			function onDocumentTouchMove( event ) {

				if ( event.touches.length == 1 ) {

					event.preventDefault();

					mouseX = event.touches[ 0 ].pageX - windowHalfX;
					targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.05;

				}
			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				group.rotation.y = plane.rotation.z = cube.rotation.y += ( targetRotation - cube.rotation.y ) * 0.05;
				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>