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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>
- <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();
- 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, 1.5 );
- scene.add( ambientLight );
- const pointLight = new THREE.PointLight( 0xffffff, 2.5, 0, 0 );
- 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;
- map.colorSpace = THREE.SRGBColorSpace;
- 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 );
- renderer.setAnimationLoop( animate );
- 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() {
- 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>
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