javascript
/
three.js
mirror de https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - interactive lines</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/libs/stats.min.js"></script>

		<script>

			var container, stats;
			var camera, scene, projector, raycaster, renderer, parentTransform, sphereInter;

			var mouse = new THREE.Vector2();
			var radius = 100, theta = 0;

			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 = '<a href="http://threejs.org" target="_blank">three.js</a> webgl - interactive cubes';
				container.appendChild( info );

				camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 10000 );

				scene = new THREE.Scene();

				var light = new THREE.DirectionalLight( 0xffffff, 2 );
				light.position.set( 1, 1, 1 ).normalize();
				scene.add( light );

				var light = new THREE.DirectionalLight( 0xffffff );
				light.position.set( -1, -1, -1 ).normalize();
				scene.add( light );

				var sphereGeometry = new THREE.SphereGeometry(3);
				sphereInter = new THREE.Mesh( sphereGeometry, new THREE.MeshLambertMaterial( { color: 0xff0000 } ) );
				sphereInter.visible = false;
				scene.add( sphereInter );

				var geometry = new THREE.Geometry();
				geometry.vertices.push( new THREE.Vector3( 0, 0, 0 ) );
				geometry.vertices.push( new THREE.Vector3( 15, 15, 15 ) );
				geometry.vertices.push( new THREE.Vector3( 0, 30, -40 ) );
				geometry.vertices.push( new THREE.Vector3( -15, -15, -30 ) );

				parentTransform = new THREE.Mesh();
				parentTransform.position.x = Math.random() * 200 - 400;
				parentTransform.position.y = Math.random() * 200 - 400;
				parentTransform.position.z = Math.random() * 200 - 400;

				parentTransform.rotation.x = Math.random() * 2 * Math.PI;
				parentTransform.rotation.y = Math.random() * 2 * Math.PI;
				parentTransform.rotation.z = Math.random() * 2 * Math.PI;

				// parentTransform.scale.x = Math.random() + 0.5;
				// parentTransform.scale.y = Math.random() + 0.5;
				// parentTransform.scale.z = Math.random() + 0.5;

				for ( var i = 0; i < 100; i ++ ) {

					var type = Math.random() > 0.5 ? THREE.LineStrip : THREE.LinePieces;
					var object = new THREE.Line( geometry, new THREE.LineBasicMaterial( { color: Math.random() * 0xffffff, linewidth: 5 } ), type );

					object.position.x = Math.random() * 800 - 400;
					object.position.y = Math.random() * 800 - 400;
					object.position.z = Math.random() * 800 - 400;

					object.rotation.x = Math.random() * 2 * Math.PI;
					object.rotation.y = Math.random() * 2 * Math.PI;
					object.rotation.z = Math.random() * 2 * Math.PI;

					// object.scale.x = Math.random() + 0.5;
					// object.scale.y = Math.random() + 0.5;
					// object.scale.z = Math.random() + 0.5;

					parentTransform.add( object );

				}

				scene.add(parentTransform);

				projector = new THREE.Projector();
				raycaster = new THREE.Raycaster();
				raycaster.linePrecision = 5;

				renderer = new THREE.WebGLRenderer();
				renderer.sortObjects = false;
				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( 'mousemove', onDocumentMouseMove, false );

				//

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			function onDocumentMouseMove( event ) {

				event.preventDefault();

				mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
				mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				theta += 0.1;

				camera.position.x = radius * Math.sin( THREE.Math.degToRad( theta ) );
				camera.position.y = radius * Math.sin( THREE.Math.degToRad( theta ) );
				camera.position.z = radius * Math.cos( THREE.Math.degToRad( theta ) );
				camera.lookAt( scene.position );

				// find intersections

				var vector = new THREE.Vector3( mouse.x, mouse.y, 1 );
				projector.unprojectVector( vector, camera );

				raycaster.set( camera.position, vector.sub( camera.position ).normalize() );

				var intersects = raycaster.intersectObjects( parentTransform.children, true);

				if ( intersects.length > 0 ) {

					sphereInter.visible = true;
					sphereInter.position = intersects[0].point.clone();

				} else {

					sphereInter.visible = false;

				}

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>