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Flexnuts/webgl_materials_cubemap_dynamic_v2.html

Created November 1, 2021 16:48
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Dynamic CubeMap w/ Physical
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webgl_materials_cubemap_dynamic_v2.html
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - materials - dynamic cube reflection</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">
<style>
body {
touch-action: none;
}
</style>
</head>
<body>
<div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js webgl</a> - materials - dynamic cube reflection<br/>Photo by <a href="http://www.flickr.com/photos/jonragnarsson/2294472375/" target="_blank" rel="noopener">J&oacute;n Ragnarsson</a>.</div>
<script type="module">
import * as THREE from '../build/three.module.js';
let camera, scene, renderer;
let cube, sphere, torus, material, material1;
let count = 0, cubeCamera1, cubeCamera2, cubeRenderTarget1, cubeRenderTarget2, hdrCubeRenderTarget;
let onPointerDownPointerX, onPointerDownPointerY, onPointerDownLon, onPointerDownLat;
let lon = 0, lat = 0;
let phi = 0, theta = 0;
const textureLoader = new THREE.TextureLoader();
textureLoader.load( 'textures/2294472375_24a3b8ef46_o.jpg', function ( texture ) {
texture.encoding = THREE.sRGBEncoding;
texture.mapping = THREE.EquirectangularReflectionMapping;
init( texture );
animate();
} );
function init( texture ) {
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.outputEncoding = THREE.sRGBEncoding;
document.body.appendChild( renderer.domElement );
scene = new THREE.Scene();
scene.background = texture;
camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 1000 );
//
cubeRenderTarget1 = new THREE.WebGLCubeRenderTarget( 256, {
format: THREE.RGBFormat,
generateMipmaps: true,
minFilter: THREE.LinearMipmapLinearFilter,
encoding: THREE.sRGBEncoding // temporary -- to prevent the material's shader from recompiling every frame
} );
cubeCamera1 = new THREE.CubeCamera( 1, 1000, cubeRenderTarget1 );
const pmremGenerator = new THREE.PMREMGenerator( renderer );
hdrCubeRenderTarget = pmremGenerator.fromCubemap( cubeRenderTarget1.texture );
//
material = new THREE.MeshPhysicalMaterial( {
color:0x0,
roughness:0,
metalness:1,
reflectivity:1.0,
clearcoat:0.43,
envMap:hdrCubeRenderTarget.texture
} );
material1 = new THREE.MeshBasicMaterial( {
reflectivity:1.0,
envMap: cubeRenderTarget1.texture
} );
// White directional light at half intensity shining from the top.
const directionalLight = new THREE.DirectionalLight( 0xffffff, 0.5 );
scene.add( directionalLight );
const light = new THREE.AmbientLight( 0x404040 ); // soft white light
scene.add( light );
sphere = new THREE.Mesh( new THREE.IcosahedronGeometry( 20, 8 ), material1 );
scene.add( sphere );
cube = new THREE.Mesh( new THREE.BoxGeometry( 20, 20, 20 ), material );
scene.add( cube );
torus = new THREE.Mesh( new THREE.TorusKnotGeometry( 10, 5, 128, 16 ), material );
scene.add( torus );
//
document.addEventListener( 'pointerdown', onPointerDown );
document.addEventListener( 'wheel', onDocumentMouseWheel );
window.addEventListener( 'resize', onWindowResized );
}
function onWindowResized() {
renderer.setSize( window.innerWidth, window.innerHeight );
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
}
function onPointerDown( event ) {
event.preventDefault();
onPointerDownPointerX = event.clientX;
onPointerDownPointerY = event.clientY;
onPointerDownLon = lon;
onPointerDownLat = lat;
document.addEventListener( 'pointermove', onPointerMove );
document.addEventListener( 'pointerup', onPointerUp );
}
function onPointerMove( event ) {
lon = ( event.clientX - onPointerDownPointerX ) * 0.1 + onPointerDownLon;
lat = ( event.clientY - onPointerDownPointerY ) * 0.1 + onPointerDownLat;
}
function onPointerUp() {
document.removeEventListener( 'pointermove', onPointerMove );
document.removeEventListener( 'pointerup', onPointerUp );
}
function onDocumentMouseWheel( event ) {
const fov = camera.fov + event.deltaY * 0.05;
camera.fov = THREE.MathUtils.clamp( fov, 10, 75 );
camera.updateProjectionMatrix();
}
function animate() {
requestAnimationFrame( animate );
render();
}
function render() {
const time = Date.now();
lon += .15;
lat = Math.max( - 85, Math.min( 85, lat ) );
phi = THREE.MathUtils.degToRad( 90 - lat );
theta = THREE.MathUtils.degToRad( lon );
cube.position.x = Math.cos( time * 0.001 ) * 30;
cube.position.y = Math.sin( time * 0.001 ) * 30;
cube.position.z = Math.sin( time * 0.001 ) * 30;
cube.rotation.x += 0.02;
cube.rotation.y += 0.03;
torus.position.x = Math.cos( time * 0.001 + 10 ) * 30;
torus.position.y = Math.sin( time * 0.001 + 10 ) * 30;
torus.position.z = Math.sin( time * 0.001 + 10 ) * 30;
torus.rotation.x += 0.02;
torus.rotation.y += 0.03;
camera.position.x = 100 * Math.sin( phi ) * Math.cos( theta );
camera.position.y = 100 * Math.cos( phi );
camera.position.z = 100 * Math.sin( phi ) * Math.sin( theta );
camera.lookAt( scene.position );
// pingpong
cubeCamera1.update( renderer, scene );
material.envMap = hdrCubeRenderTarget.texture;
material1.envMap = cubeRenderTarget1.texture;
renderer.render( scene, camera );
}
</script>
</body>
</html>
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