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2 years ago
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js vr - roller coaster</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>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import {
RollerCoasterGeometry,
RollerCoasterShadowGeometry,
RollerCoasterLiftersGeometry,
TreesGeometry,
SkyGeometry
} from 'three/addons/misc/RollerCoaster.js';
import { VRButton } from 'three/addons/webxr/VRButton.js';
let mesh, material, geometry;
const renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.xr.enabled = true;
renderer.xr.setReferenceSpaceType( 'local' );
document.body.appendChild( renderer.domElement );
document.body.appendChild( VRButton.createButton( renderer ) );
//
const scene = new THREE.Scene();
scene.background = new THREE.Color( 0xf0f0ff );
const light = new THREE.HemisphereLight( 0xfff0f0, 0x606066 );
light.position.set( 1, 1, 1 );
scene.add( light );
const train = new THREE.Object3D();
scene.add( train );
const camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.1, 500 );
train.add( camera );
// environment
geometry = new THREE.PlaneGeometry( 500, 500, 15, 15 );
geometry.rotateX( - Math.PI / 2 );
const positions = geometry.attributes.position.array;
const vertex = new THREE.Vector3();
for ( let i = 0; i < positions.length; i += 3 ) {
vertex.fromArray( positions, i );
vertex.x += Math.random() * 10 - 5;
vertex.z += Math.random() * 10 - 5;
const distance = ( vertex.distanceTo( scene.position ) / 5 ) - 25;
vertex.y = Math.random() * Math.max( 0, distance );
vertex.toArray( positions, i );
}
geometry.computeVertexNormals();
material = new THREE.MeshLambertMaterial( {
color: 0x407000
} );
mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
geometry = new TreesGeometry( mesh );
material = new THREE.MeshBasicMaterial( {
side: THREE.DoubleSide, vertexColors: true
} );
mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
geometry = new SkyGeometry();
material = new THREE.MeshBasicMaterial( { color: 0xffffff } );
mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
//
const PI2 = Math.PI * 2;
const curve = ( function () {
const vector = new THREE.Vector3();
const vector2 = new THREE.Vector3();
return {
getPointAt: function ( t ) {
t = t * PI2;
const x = Math.sin( t * 3 ) * Math.cos( t * 4 ) * 50;
const y = Math.sin( t * 10 ) * 2 + Math.cos( t * 17 ) * 2 + 5;
const z = Math.sin( t ) * Math.sin( t * 4 ) * 50;
return vector.set( x, y, z ).multiplyScalar( 2 );
},
getTangentAt: function ( t ) {
const delta = 0.0001;
const t1 = Math.max( 0, t - delta );
const t2 = Math.min( 1, t + delta );
return vector2.copy( this.getPointAt( t2 ) )
.sub( this.getPointAt( t1 ) ).normalize();
}
};
} )();
geometry = new RollerCoasterGeometry( curve, 1500 );
material = new THREE.MeshPhongMaterial( {
vertexColors: true
} );
mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
geometry = new RollerCoasterLiftersGeometry( curve, 100 );
material = new THREE.MeshPhongMaterial();
mesh = new THREE.Mesh( geometry, material );
mesh.position.y = 0.1;
scene.add( mesh );
geometry = new RollerCoasterShadowGeometry( curve, 500 );
material = new THREE.MeshBasicMaterial( {
color: 0x305000, depthWrite: false, transparent: true
} );
mesh = new THREE.Mesh( geometry, material );
mesh.position.y = 0.1;
scene.add( mesh );
const funfairs = [];
//
geometry = new THREE.CylinderGeometry( 10, 10, 5, 15 );
material = new THREE.MeshLambertMaterial( {
color: 0xff8080
} );
mesh = new THREE.Mesh( geometry, material );
mesh.position.set( - 80, 10, - 70 );
mesh.rotation.x = Math.PI / 2;
scene.add( mesh );
funfairs.push( mesh );
geometry = new THREE.CylinderGeometry( 5, 6, 4, 10 );
material = new THREE.MeshLambertMaterial( {
color: 0x8080ff
} );
mesh = new THREE.Mesh( geometry, material );
mesh.position.set( 50, 2, 30 );
scene.add( mesh );
funfairs.push( mesh );
//
window.addEventListener( 'resize', onWindowResize );
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
//
const position = new THREE.Vector3();
const tangent = new THREE.Vector3();
const lookAt = new THREE.Vector3();
let velocity = 0;
let progress = 0;
let prevTime = performance.now();
function render() {
const time = performance.now();
const delta = time - prevTime;
for ( let i = 0; i < funfairs.length; i ++ ) {
funfairs[ i ].rotation.y = time * 0.0004;
}
//
progress += velocity;
progress = progress % 1;
position.copy( curve.getPointAt( progress ) );
position.y += 0.3;
train.position.copy( position );
tangent.copy( curve.getTangentAt( progress ) );
velocity -= tangent.y * 0.0000001 * delta;
velocity = Math.max( 0.00004, Math.min( 0.0002, velocity ) );
train.lookAt( lookAt.copy( position ).sub( tangent ) );
//
renderer.render( scene, camera );
prevTime = time;
}
renderer.setAnimationLoop( render );
</script>
</body>
</html>