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150 lines
3.5 KiB
150 lines
3.5 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 webgl - geometry - dynamic</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<link type="text/css" rel="stylesheet" href="main.css">
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<style>
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body {
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color: #666;
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}
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</style>
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</head>
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<body>
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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - dynamic geometry<br />
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left click: forward, right click: backward
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</div>
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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 Stats from 'three/addons/libs/stats.module.js';
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import { FirstPersonControls } from 'three/addons/controls/FirstPersonControls.js';
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let camera, controls, scene, renderer, stats;
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let mesh, geometry, material, clock;
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const worldWidth = 128, worldDepth = 128;
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init();
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animate();
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function init() {
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camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 20000 );
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camera.position.y = 200;
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clock = new THREE.Clock();
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xaaccff );
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scene.fog = new THREE.FogExp2( 0xaaccff, 0.0007 );
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geometry = new THREE.PlaneGeometry( 20000, 20000, worldWidth - 1, worldDepth - 1 );
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geometry.rotateX( - Math.PI / 2 );
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const position = geometry.attributes.position;
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position.usage = THREE.DynamicDrawUsage;
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for ( let i = 0; i < position.count; i ++ ) {
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const y = 35 * Math.sin( i / 2 );
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position.setY( i, y );
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}
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const texture = new THREE.TextureLoader().load( 'textures/water.jpg' );
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texture.wrapS = texture.wrapT = THREE.RepeatWrapping;
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texture.repeat.set( 5, 5 );
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material = new THREE.MeshBasicMaterial( { color: 0x0044ff, map: texture } );
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mesh = new THREE.Mesh( geometry, material );
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scene.add( mesh );
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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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document.body.appendChild( renderer.domElement );
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controls = new FirstPersonControls( camera, renderer.domElement );
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controls.movementSpeed = 500;
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controls.lookSpeed = 0.1;
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stats = new Stats();
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document.body.appendChild( stats.dom );
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//
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window.addEventListener( 'resize', onWindowResize );
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}
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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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controls.handleResize();
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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render();
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stats.update();
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}
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function render() {
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const delta = clock.getDelta();
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const time = clock.getElapsedTime() * 10;
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const position = geometry.attributes.position;
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for ( let i = 0; i < position.count; i ++ ) {
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const y = 35 * Math.sin( i / 5 + ( time + i ) / 7 );
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position.setY( i, y );
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}
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position.needsUpdate = true;
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controls.update( delta );
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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