javascript
/
three.js
zrkadlo https://github.com/tazdij/three.js.git


			
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webvr - dragging</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
		<link type="text/css" rel="stylesheet" href="main.css">
	</head>
	<body>

		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> webvr - dragging
		</div>

		<script src="js/vr/HelioWebXRPolyfill.js"></script>
		<script src="js/vr/WebVR.js"></script>

		<script type="module">

			import * as THREE from '../build/three.module.js';

			var container;
			var camera, scene, renderer;
			var controller1, controller2;

			var raycaster, intersected = [];
			var tempMatrix = new THREE.Matrix4();

			var group;

			init();
			animate();

			function init() {

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

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0x808080 );

				camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.1, 10 );

				var geometry = new THREE.PlaneBufferGeometry( 4, 4 );
				var material = new THREE.MeshStandardMaterial( {
					color: 0xeeeeee,
					roughness: 1.0,
					metalness: 0.0
				} );
				var floor = new THREE.Mesh( geometry, material );
				floor.rotation.x = - Math.PI / 2;
				floor.receiveShadow = true;
				scene.add( floor );

				scene.add( new THREE.HemisphereLight( 0x808080, 0x606060 ) );

				var light = new THREE.DirectionalLight( 0xffffff );
				light.position.set( 0, 6, 0 );
				light.castShadow = true;
				light.shadow.camera.top = 2;
				light.shadow.camera.bottom = - 2;
				light.shadow.camera.right = 2;
				light.shadow.camera.left = - 2;
				light.shadow.mapSize.set( 4096, 4096 );
				scene.add( light );

				group = new THREE.Group();
				scene.add( group );

				var geometries = [
					new THREE.BoxBufferGeometry( 0.2, 0.2, 0.2 ),
					new THREE.ConeBufferGeometry( 0.2, 0.2, 64 ),
					new THREE.CylinderBufferGeometry( 0.2, 0.2, 0.2, 64 ),
					new THREE.IcosahedronBufferGeometry( 0.2, 3 ),
					new THREE.TorusBufferGeometry( 0.2, 0.04, 64, 32 )
				];

				for ( var i = 0; i < 50; i ++ ) {

					var geometry = geometries[ Math.floor( Math.random() * geometries.length ) ];
					var material = new THREE.MeshStandardMaterial( {
						color: Math.random() * 0xffffff,
						roughness: 0.7,
						metalness: 0.0
					} );

					var object = new THREE.Mesh( geometry, material );

					object.position.x = Math.random() * 4 - 2;
					object.position.y = Math.random() * 2;
					object.position.z = Math.random() * 4 - 2;

					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.setScalar( Math.random() + 0.5 );

					object.castShadow = true;
					object.receiveShadow = true;

					group.add( object );

				}

				//

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.gammaInput = true;
				renderer.gammaOutput = true;
				renderer.shadowMap.enabled = true;
				renderer.vr.enabled = true;
				container.appendChild( renderer.domElement );

				document.body.appendChild( WEBVR.createButton( renderer ) );

				// controllers

				controller1 = renderer.vr.getController( 0 );
				controller1.addEventListener( 'selectstart', onSelectStart );
				controller1.addEventListener( 'selectend', onSelectEnd );
				scene.add( controller1 );

				controller2 = renderer.vr.getController( 1 );
				controller2.addEventListener( 'selectstart', onSelectStart );
				controller2.addEventListener( 'selectend', onSelectEnd );
				scene.add( controller2 );

				//

				var geometry = new THREE.BufferGeometry().setFromPoints( [ new THREE.Vector3( 0, 0, 0 ), new THREE.Vector3( 0, 0, - 1 ) ] );

				var line = new THREE.Line( geometry );
				line.name = 'line';
				line.scale.z = 5;

				controller1.add( line.clone() );
				controller2.add( line.clone() );

				raycaster = new THREE.Raycaster();

				//

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

			}

			function onWindowResize() {

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

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

			}

			function onSelectStart( event ) {

				var controller = event.target;

				var intersections = getIntersections( controller );

				if ( intersections.length > 0 ) {

					var intersection = intersections[ 0 ];

					tempMatrix.getInverse( controller.matrixWorld );

					var object = intersection.object;
					object.matrix.premultiply( tempMatrix );
					object.matrix.decompose( object.position, object.quaternion, object.scale );
					object.material.emissive.b = 1;
					controller.add( object );

					controller.userData.selected = object;

				}

			}

			function onSelectEnd( event ) {

				var controller = event.target;

				if ( controller.userData.selected !== undefined ) {

					var object = controller.userData.selected;
					object.matrix.premultiply( controller.matrixWorld );
					object.matrix.decompose( object.position, object.quaternion, object.scale );
					object.material.emissive.b = 0;
					group.add( object );

					controller.userData.selected = undefined;

				}


			}

			function getIntersections( controller ) {

				tempMatrix.identity().extractRotation( controller.matrixWorld );

				raycaster.ray.origin.setFromMatrixPosition( controller.matrixWorld );
				raycaster.ray.direction.set( 0, 0, - 1 ).applyMatrix4( tempMatrix );

				return raycaster.intersectObjects( group.children );

			}

			function intersectObjects( controller ) {

				// Do not highlight when already selected

				if ( controller.userData.selected !== undefined ) return;

				var line = controller.getObjectByName( 'line' );
				var intersections = getIntersections( controller );

				if ( intersections.length > 0 ) {

					var intersection = intersections[ 0 ];

					var object = intersection.object;
					object.material.emissive.r = 1;
					intersected.push( object );

					line.scale.z = intersection.distance;

				} else {

					line.scale.z = 5;

				}

			}

			function cleanIntersected() {

				while ( intersected.length ) {

					var object = intersected.pop();
					object.material.emissive.r = 0;

				}

			}

			//

			function animate() {

				renderer.setAnimationLoop( render );

			}

			function render() {

				cleanIntersected();

				intersectObjects( controller1 );
				intersectObjects( controller2 );

				renderer.render( scene, camera );

			}

		</script>
	</body>
</html>