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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - parametric geometries</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link type="text/css" rel="stylesheet" href="main.css">
</head>
<body>
<div id="container"></div>
<div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - parametric geometries</div>
<!-- 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 Stats from 'three/addons/libs/stats.module.js';
import * as Curves from 'three/addons/curves/CurveExtras.js';
import { ParametricGeometry } from 'three/addons/geometries/ParametricGeometry.js';
import { ParametricGeometries } from 'three/addons/geometries/ParametricGeometries.js';
let camera, scene, renderer, stats;
init();
animate();
function init() {
const container = document.getElementById( 'container' );
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 2000 );
camera.position.y = 400;
scene = new THREE.Scene();
//
const ambientLight = new THREE.AmbientLight( 0xcccccc, 0.4 );
scene.add( ambientLight );
const pointLight = new THREE.PointLight( 0xffffff, 0.8 );
camera.add( pointLight );
scene.add( camera );
//
const map = new THREE.TextureLoader().load( 'textures/uv_grid_opengl.jpg' );
map.wrapS = map.wrapT = THREE.RepeatWrapping;
map.anisotropy = 16;
const material = new THREE.MeshPhongMaterial( { map: map, side: THREE.DoubleSide } );
//
let geometry, object;
geometry = new ParametricGeometry( ParametricGeometries.plane( 100, 100 ), 10, 10 );
geometry.center();
object = new THREE.Mesh( geometry, material );
object.position.set( - 200, 0, 200 );
scene.add( object );
geometry = new ParametricGeometry( ParametricGeometries.klein, 20, 20 );
object = new THREE.Mesh( geometry, material );
object.position.set( 0, 0, 200 );
object.scale.multiplyScalar( 5 );
scene.add( object );
geometry = new ParametricGeometry( ParametricGeometries.mobius, 20, 20 );
object = new THREE.Mesh( geometry, material );
object.position.set( 200, 0, 200 );
object.scale.multiplyScalar( 30 );
scene.add( object );
//
const GrannyKnot = new Curves.GrannyKnot();
const torus = new ParametricGeometries.TorusKnotGeometry( 50, 10, 50, 20, 2, 3 );
const sphere = new ParametricGeometries.SphereGeometry( 50, 20, 10 );
const tube = new ParametricGeometries.TubeGeometry( GrannyKnot, 100, 3, 8, true );
object = new THREE.Mesh( torus, material );
object.position.set( - 200, 0, - 200 );
scene.add( object );
object = new THREE.Mesh( sphere, material );
object.position.set( 0, 0, - 200 );
scene.add( object );
object = new THREE.Mesh( tube, material );
object.position.set( 200, 0, - 200 );
object.scale.multiplyScalar( 2 );
scene.add( object );
//
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
stats = new Stats();
container.appendChild( stats.dom );
window.addEventListener( 'resize', onWindowResize );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
const timer = Date.now() * 0.0001;
camera.position.x = Math.cos( timer ) * 800;
camera.position.z = Math.sin( timer ) * 800;
camera.lookAt( scene.position );
scene.traverse( function ( object ) {
if ( object.isMesh === true ) {
object.rotation.x = timer * 5;
object.rotation.y = timer * 2.5;
}
} );
renderer.render( scene, camera );
}
</script>
</body>
</html>