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256 lines
6.0 KiB
256 lines
6.0 KiB
2 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js vr - roller coaster</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
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<link type="text/css" rel="stylesheet" href="main.css">
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</head>
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<body>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.module.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import {
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RollerCoasterGeometry,
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RollerCoasterShadowGeometry,
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RollerCoasterLiftersGeometry,
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TreesGeometry,
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SkyGeometry
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} from 'three/addons/misc/RollerCoaster.js';
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import { VRButton } from 'three/addons/webxr/VRButton.js';
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let mesh, material, geometry;
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const renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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renderer.xr.enabled = true;
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renderer.xr.setReferenceSpaceType( 'local' );
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document.body.appendChild( renderer.domElement );
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document.body.appendChild( VRButton.createButton( renderer ) );
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//
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const scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xf0f0ff );
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const light = new THREE.HemisphereLight( 0xfff0f0, 0x606066 );
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light.position.set( 1, 1, 1 );
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scene.add( light );
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const train = new THREE.Object3D();
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scene.add( train );
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const camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.1, 500 );
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train.add( camera );
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// environment
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geometry = new THREE.PlaneGeometry( 500, 500, 15, 15 );
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geometry.rotateX( - Math.PI / 2 );
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const positions = geometry.attributes.position.array;
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const vertex = new THREE.Vector3();
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for ( let i = 0; i < positions.length; i += 3 ) {
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vertex.fromArray( positions, i );
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vertex.x += Math.random() * 10 - 5;
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vertex.z += Math.random() * 10 - 5;
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const distance = ( vertex.distanceTo( scene.position ) / 5 ) - 25;
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vertex.y = Math.random() * Math.max( 0, distance );
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vertex.toArray( positions, i );
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}
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geometry.computeVertexNormals();
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material = new THREE.MeshLambertMaterial( {
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color: 0x407000
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} );
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mesh = new THREE.Mesh( geometry, material );
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scene.add( mesh );
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geometry = new TreesGeometry( mesh );
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material = new THREE.MeshBasicMaterial( {
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side: THREE.DoubleSide, vertexColors: true
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} );
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mesh = new THREE.Mesh( geometry, material );
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scene.add( mesh );
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geometry = new SkyGeometry();
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material = new THREE.MeshBasicMaterial( { color: 0xffffff } );
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mesh = new THREE.Mesh( geometry, material );
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scene.add( mesh );
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//
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const PI2 = Math.PI * 2;
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const curve = ( function () {
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const vector = new THREE.Vector3();
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const vector2 = new THREE.Vector3();
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return {
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getPointAt: function ( t ) {
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t = t * PI2;
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const x = Math.sin( t * 3 ) * Math.cos( t * 4 ) * 50;
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const y = Math.sin( t * 10 ) * 2 + Math.cos( t * 17 ) * 2 + 5;
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const z = Math.sin( t ) * Math.sin( t * 4 ) * 50;
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return vector.set( x, y, z ).multiplyScalar( 2 );
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},
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getTangentAt: function ( t ) {
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const delta = 0.0001;
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const t1 = Math.max( 0, t - delta );
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const t2 = Math.min( 1, t + delta );
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return vector2.copy( this.getPointAt( t2 ) )
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.sub( this.getPointAt( t1 ) ).normalize();
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}
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};
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} )();
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geometry = new RollerCoasterGeometry( curve, 1500 );
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material = new THREE.MeshPhongMaterial( {
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vertexColors: true
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} );
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mesh = new THREE.Mesh( geometry, material );
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scene.add( mesh );
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geometry = new RollerCoasterLiftersGeometry( curve, 100 );
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material = new THREE.MeshPhongMaterial();
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mesh = new THREE.Mesh( geometry, material );
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mesh.position.y = 0.1;
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scene.add( mesh );
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geometry = new RollerCoasterShadowGeometry( curve, 500 );
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material = new THREE.MeshBasicMaterial( {
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color: 0x305000, depthWrite: false, transparent: true
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} );
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mesh = new THREE.Mesh( geometry, material );
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mesh.position.y = 0.1;
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scene.add( mesh );
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const funfairs = [];
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//
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geometry = new THREE.CylinderGeometry( 10, 10, 5, 15 );
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material = new THREE.MeshLambertMaterial( {
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color: 0xff8080
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} );
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mesh = new THREE.Mesh( geometry, material );
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mesh.position.set( - 80, 10, - 70 );
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mesh.rotation.x = Math.PI / 2;
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scene.add( mesh );
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funfairs.push( mesh );
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geometry = new THREE.CylinderGeometry( 5, 6, 4, 10 );
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material = new THREE.MeshLambertMaterial( {
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color: 0x8080ff
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} );
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mesh = new THREE.Mesh( geometry, material );
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mesh.position.set( 50, 2, 30 );
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scene.add( mesh );
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funfairs.push( mesh );
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//
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window.addEventListener( 'resize', onWindowResize );
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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}
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//
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const position = new THREE.Vector3();
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const tangent = new THREE.Vector3();
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const lookAt = new THREE.Vector3();
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let velocity = 0;
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let progress = 0;
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let prevTime = performance.now();
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function render() {
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const time = performance.now();
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const delta = time - prevTime;
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for ( let i = 0; i < funfairs.length; i ++ ) {
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funfairs[ i ].rotation.y = time * 0.0004;
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}
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//
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progress += velocity;
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progress = progress % 1;
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position.copy( curve.getPointAt( progress ) );
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position.y += 0.3;
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train.position.copy( position );
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tangent.copy( curve.getTangentAt( progress ) );
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velocity -= tangent.y * 0.0000001 * delta;
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velocity = Math.max( 0.00004, Math.min( 0.0002, velocity ) );
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train.lookAt( lookAt.copy( position ).sub( tangent ) );
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//
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renderer.render( scene, camera );
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prevTime = time;
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}
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renderer.setAnimationLoop( render );
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</script>
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</body>
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</html>
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