Add test example with interactive lines.

84da87ab · stephomi · 95d8c32c · 84da87ab
隐藏空白更改
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examples/webgl_interactive_lines.html examples/webgl_interactive_lines.html +190 -0

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--- a/examples/webgl_interactive_lines.html
+++ b/examples/webgl_interactive_lines.html
+<!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 ) );
+
+				parentTransform = new THREE.Mesh();
+				parentTransform.position.x = Math.random() * 800 - 400;
+				parentTransform.position.y = Math.random() * 800 - 400;
+				parentTransform.position.z = Math.random() * 800 - 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 < 1000; i ++ ) {
+
+					var object = new THREE.Line( geometry, new THREE.LineBasicMaterial( { color: Math.random() * 0xffffff, linewidth: 2 } ) );
+
+					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>