Html
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webvr - roller coaster</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<style>
body
{
margin: 0px;
color: #fff;
font-family: Monospace;
background-color: #444;
overflow: hidden;
}
</style>
</head>
<body>
<!-- connect the library three.js -->
<script src="https://dir.by/example_lib/tree_js/three.js"></script>
<!-- libraries to create a roller coaster -->
<script src="https://dir.by/example_lib/tree_js/RollerCoaster.js"></script>
<script src="https://dir.by/example_lib/tree_js/WebVR.js"></script>
<script>
var renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.vr.enabled = true;
document.body.appendChild( renderer.domElement );
document.body.appendChild( WEBVR.createButton( renderer, { frameOfReferenceType: 'eye-level' } ) );
var scene = new THREE.Scene();
scene.background = new THREE.Color( 0xf0f0ff );
var light = new THREE.HemisphereLight( 0xfff0f0, 0x606066 );
light.position.set( 1, 1, 1 );
scene.add( light );
var train = new THREE.Object3D();
scene.add( train );
var camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 0.1, 500 );
train.add( camera );
// environment
var geometry = new THREE.PlaneBufferGeometry( 500, 500, 15, 15 );
geometry.rotateX( - Math.PI / 2 );
var positions = geometry.attributes.position.array;
var vertex = new THREE.Vector3();
for ( var i = 0; i < positions.length; i += 3 )
{
vertex.fromArray( positions, i );
vertex.x += Math.random() * 10 - 5;
vertex.z += Math.random() * 10 - 5;
var distance = ( vertex.distanceTo( scene.position ) / 5 ) - 25;
vertex.y = Math.random() * Math.max( 0, distance );
vertex.toArray( positions, i );
}
geometry.computeVertexNormals();
var material = new THREE.MeshLambertMaterial( {
color: 0x407000
} );
var mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
var geometry = new TreesGeometry( mesh );
var material = new THREE.MeshBasicMaterial( {
side: THREE.DoubleSide, vertexColors: THREE.VertexColors
} );
var mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
var geometry = new SkyGeometry();
var material = new THREE.MeshBasicMaterial( { color: 0xffffff } );
var mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
var PI2 = Math.PI * 2;
var curve = ( function ()
{
var vector = new THREE.Vector3();
var vector2 = new THREE.Vector3();
var obj =
{
getPointAt: function ( t )
{
t = t * PI2;
var x = Math.sin( t * 3 ) * Math.cos( t * 4 ) * 50;
var y = Math.sin( t * 10 ) * 2 + Math.cos( t * 17 ) * 2 + 5;
var z = Math.sin( t ) * Math.sin( t * 4 ) * 50;
return vector.set( x, y, z ).multiplyScalar( 2 );
},
getTangentAt: function ( t )
{
var delta = 0.0001;
var t1 = Math.max( 0, t - delta );
var t2 = Math.min( 1, t + delta );
return vector2.copy( this.getPointAt( t2 ) ) .sub( this.getPointAt( t1 ) ).normalize();
}
};
return obj;
} )();
var geometry = new RollerCoasterGeometry( curve, 1500 );
var material = new THREE.MeshPhongMaterial( {
vertexColors: THREE.VertexColors
} );
var mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
var geometry = new RollerCoasterLiftersGeometry( curve, 100 );
var material = new THREE.MeshPhongMaterial();
var mesh = new THREE.Mesh( geometry, material );
mesh.position.y = 0.1;
scene.add( mesh );
var geometry = new RollerCoasterShadowGeometry( curve, 500 );
var material = new THREE.MeshBasicMaterial( {
color: 0x305000, depthWrite: false, transparent: true
} );
var mesh = new THREE.Mesh( geometry, material );
mesh.position.y = 0.1;
scene.add( mesh );
var funfairs = [];
var geometry = new THREE.CylinderBufferGeometry( 10, 10, 5, 15 );
var material = new THREE.MeshLambertMaterial( {
color: 0xff8080,
//flatShading: true // Lambert does not support flat shading
} );
var mesh = new THREE.Mesh( geometry, material );
mesh.position.set( - 80, 10, - 70 );
mesh.rotation.x = Math.PI / 2;
scene.add( mesh );
funfairs.push( mesh );
var geometry = new THREE.CylinderBufferGeometry( 5, 6, 4, 10 );
var material = new THREE.MeshLambertMaterial( {
color: 0x8080ff,
//flatShading: true // Lambert does not support flat shading
} );
var mesh = new THREE.Mesh( geometry, material );
mesh.position.set( 50, 2, 30 );
scene.add( mesh );
funfairs.push( mesh );
window.addEventListener( 'resize', onWindowResize, false );
function onWindowResize()
{
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
var position = new THREE.Vector3();
var tangent = new THREE.Vector3();
var lookAt = new THREE.Vector3();
var velocity = 0;
var progress = 0;
var prevTime = performance.now();
function render()
{
var time = performance.now();
var delta = time - prevTime;
for ( var 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>
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