javascript
/
three.js
cermin dari https://github.com/tazdij/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/modifiers/SubdivisionModifier.js"></script>
		
		<script src="fonts/helvetiker_regular.typeface.js"></script>
		<!--
		<script src="obj/WaltHead.js"></script>
		-->
		
		<script>

			var container, stats;

			var camera, scene, renderer;

			var cube, plane;

			var targetYRotation = targetXRotation = 0;
			var targetYRotationOnMouseDown = targetXRotationOnMouseDown = 0;

			var mouseX = 0, mouseY = 0;
			var mouseXOnMouseDown = 0;

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

		
			// Create new object by parameters
			var createSomething = function(klass, args) {
				var F = function(klass, args) {
				    return klass.apply(this, args);
				}
				F.prototype = klass.prototype;

				return new F(klass, args);
			};
			
			
			function createSubdivision ( geometry, repeats ) {

				repeats = (repeats === undefined ) ? 1 : repeats;

				var smooth = geometry;

				while (repeats--) {
					smooth = new THREE.SubdivisionGeometry(smooth);
				}

				return smooth;
			};

			
			init();
			animate();
			
			var info;

			function init() {

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

				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 geometry ';
				container.appendChild( info );

				camera = new THREE.PerspectiveCamera( 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 } ) ] );

				}
				
				var geometriesParams = [
				
					{type: 'CubeGeometry', args: [ 200, 200, 200, 2, 2, 2, materials ] }, 
					{type: 'TorusGeometry', args: [ 100, 60, 4, 8, Math.PI*2 ] }, 
					{type: 'SphereGeometry', args: [ 200, 1, 1 ] }, 
					{type: 'CylinderGeometry', args: [ 25, 75, 200, 8, 3 ] }, 
					{type: 'TextGeometry', args: ['&', {
											size: 200,
											height: 50,
											curveSegments: 1,
											font: "helvetiker"

										}]}
				
				];
				
				
				var modifier = new THREE.SubdivisionModifier( 2 );

				var params = geometriesParams[1];

				info.innerHTML = 'Drag to spin the geometry THREE.' + params.type
				 	+ ' with ' + modifier.subdivisions + ' subdivisions'; //+ params.args;

				//geometry = new THREE.CubeGeometry( 200, 200, 200, 2, 2, 2, materials );
				geometry = createSomething(THREE[params.type], params.args);

				// Cloning original geometry for debuging
				smooth = geometry;
				geometry = THREE.GeometryUtils.clone( geometry );
				
				// mergeVertices(); is run in case of duplicated vertices
				smooth.mergeVertices();
				modifier.modify( smooth );
				
				
				var faceABCD = "abcd";
				var color, f, p, n, vertexIndex;
				for (i = 0; i < smooth.faces.length; i++ ) {
				
					f  = smooth.faces[ i ];
				
				
					n = ( f instanceof THREE.Face3 ) ? 3 : 4;
				
					for( var j = 0; j < n; j++ ) {
				
						vertexIndex = f[ faceABCD.charAt( j ) ];
				
						p = smooth.vertices[ vertexIndex ].position;
				
						color = new THREE.Color( 0xffffff );
						color.setHSV( ( p.y ) / 200 + 0.5, 1.0, 1.0 );
						
						f.vertexColors[ j ] = color;
				
				
					}
				
				}


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

				// Debug new Points
				var PI2 = Math.PI * 2;
				var program = function ( context ) {
				
					context.beginPath();
					context.arc( 0, 0, 1, 0, PI2, true );
					context.closePath();
					context.fill();
				
				}
				
				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
				
				// var drawText = function(i) {
				// 	
				// 	return function ( context ) {
				// 
				// 		context.beginPath();
				// 		context.scale(0.1,-0.1);
				// 
				// 		context.fillText(i, 0,0);
				// 		
				// 	};
				// 						
				// }
				// 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 );
				// }
				

				var meshmaterials = [
				 	//new THREE.MeshBasicMaterial( { color: 0x000000, shading: THREE.FlatShading, wireframe: true } )
					new THREE.MeshLambertMaterial( { color: 0xffffff, shading: THREE.FlatShading, vertexColors: THREE.VertexColors } ),
					new THREE.MeshBasicMaterial( { color: 0x405040, wireframe:true,  opacity:0.8 } )
				];

				// new THREE.MeshLambertMaterial( { color: 0xffffff, shading: THREE.FlatShading, vertexColors: THREE.VertexColors } ),
				// new THREE.MeshBasicMaterial( { color: 0x000000, shading: THREE.FlatShading, wireframe: true } )
				// new THREE.MeshFaceMaterial() 
				// new THREE.MeshPhongMaterial( { color: 0xffffff, shading: THREE.FlatShading } );
				// new THREE.MeshPhongMaterial( { color: 0xffffff, shading: THREE.SmoothShading } );

				 cube = new THREE.Mesh( smooth, meshmaterials ); 

				// cube.scale.x = 200;
				// cube.scale.y = 200;
				// cube.scale.z = 200;
				
				
				cube.doubleSided = true;
				cube.position.y = 150;
				cube.overdraw = true;
				scene.add( cube );

				renderer = new THREE.WebGLRenderer(); // WebGLRenderer 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;
				mouseYOnMouseDown = event.clientY - windowHalfY;
				targetYRotationOnMouseDown = targetYRotation;
				targetXRotationOnMouseDown = targetXRotation;
			}

			function onDocumentMouseMove( event ) {

				mouseX = event.clientX - windowHalfX;
				mouseY = event.clientY - windowHalfY;
				
				targetYRotation = targetYRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;
				targetXRotation = targetXRotationOnMouseDown + ( mouseY - mouseYOnMouseDown ) * 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 = cube.rotation.y += ( targetYRotation - cube.rotation.y ) * 0.05;
				renderer.render( scene, camera );

				group.rotation.x = cube.rotation.x += ( targetXRotation - cube.rotation.x ) * 0.05;
				//console.log(cube.rotation.x);

			}

		</script>

	</body>
</html>