examples/webgl_materials_cubemap_dynamic.html

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		<title>three.js webgl - materials - dynamic cube reflection</title>
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		<div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js webgl</a> - materials - dynamic cube reflection</div>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.module.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';

			import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
			import { RGBELoader } from 'three/addons/loaders/RGBELoader.js';

			import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
			import Stats from 'three/addons/libs/stats.module.js';

			let camera, scene, renderer, stats;
			let cube, sphere, torus, material;

			let cubeCamera, cubeRenderTarget;

			let controls;

			init();

			function init() {

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( animate );
				renderer.toneMapping = THREE.ACESFilmicToneMapping;
				document.body.appendChild( renderer.domElement );

				window.addEventListener( 'resize', onWindowResized );

				stats = new Stats();
				document.body.appendChild( stats.dom );

				camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 1000 );
				camera.position.z = 75;

				scene = new THREE.Scene();
				scene.rotation.y = 0.5; // avoid flying objects occluding the sun

				new RGBELoader()
					.setPath( 'textures/equirectangular/' )
					.load( 'quarry_01_1k.hdr', function ( texture ) {

						texture.mapping = THREE.EquirectangularReflectionMapping;

						scene.background = texture;
						scene.environment = texture;

					} );

				//

				cubeRenderTarget = new THREE.WebGLCubeRenderTarget( 256 );
				cubeRenderTarget.texture.type = THREE.HalfFloatType;

				cubeCamera = new THREE.CubeCamera( 1, 1000, cubeRenderTarget );

				//

				material = new THREE.MeshStandardMaterial( {
					envMap: cubeRenderTarget.texture,
					roughness: 0.05,
					metalness: 1
				} );

				const gui = new GUI();
				gui.add( material, 'roughness', 0, 1 );
				gui.add( material, 'metalness', 0, 1 );
				gui.add( renderer, 'toneMappingExposure', 0, 2 ).name( 'exposure' );

				sphere = new THREE.Mesh( new THREE.IcosahedronGeometry( 15, 8 ), material );
				scene.add( sphere );

				const material2 = new THREE.MeshStandardMaterial( {
					roughness: 0.1,
					metalness: 0
				} );

				cube = new THREE.Mesh( new THREE.BoxGeometry( 15, 15, 15 ), material2 );
				scene.add( cube );

				torus = new THREE.Mesh( new THREE.TorusKnotGeometry( 8, 3, 128, 16 ), material2 );
				scene.add( torus );

				//

				controls = new OrbitControls( camera, renderer.domElement );
				controls.autoRotate = true;

			}

			function onWindowResized() {

				renderer.setSize( window.innerWidth, window.innerHeight );

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

			}

			function animate( msTime ) {

				const time = msTime / 1000;

				cube.position.x = Math.cos( time ) * 30;
				cube.position.y = Math.sin( time ) * 30;
				cube.position.z = Math.sin( time ) * 30;

				cube.rotation.x += 0.02;
				cube.rotation.y += 0.03;

				torus.position.x = Math.cos( time + 10 ) * 30;
				torus.position.y = Math.sin( time + 10 ) * 30;
				torus.position.z = Math.sin( time + 10 ) * 30;

				torus.rotation.x += 0.02;
				torus.rotation.y += 0.03;

				cubeCamera.update( renderer, scene );

				controls.update();

				renderer.render( scene, camera );

				stats.update();

			}

		</script>

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