//ported world from threejs examples
//https://threejs.org/examples/#webgl_lightprobe_cubecamera

//load css
            AB.loadCSS ( '/uploads/threeport/main.css' ); 
            AB.newDiv ('container');

            import * as THREE from '/api/threemodule/libs/three.module.js';
			import { OrbitControls } from '/uploads/threejs/OrbitControls.js';
			import { LightProbeHelper } from '/uploads/threejs/LightProbeHelper.js';
			import { LightProbeGenerator } from '/uploads/threejs/LightProbeGenerator.js';

			let renderer, scene, camera, cubeCamera;

			let lightProbe;

			init();

			function init() {

				// renderer
				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				document.body.appendChild( renderer.domElement );
				renderer.outputEncoding = THREE.sRGBEncoding;

				// scene
				scene = new THREE.Scene();

				// camera
				camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 1000 );
				camera.position.set( 0, 0, 30 );

				const cubeRenderTarget = new THREE.WebGLCubeRenderTarget( 256, {
					encoding: THREE.sRGBEncoding, // since gamma is applied during rendering, the cubeCamera renderTarget texture encoding must be sRGBEncoding
					format: THREE.RGBAFormat
				} );

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

				// controls
				const controls = new OrbitControls( camera, renderer.domElement );
				controls.addEventListener( 'change', render );
				controls.minDistance = 10;
				controls.maxDistance = 50;
				controls.enablePan = false;

				// probe
				lightProbe = new THREE.LightProbe();
				scene.add( lightProbe );

				// envmap
				const genCubeUrls = function ( prefix, postfix ) {

					return [
						prefix + 'px' + postfix, prefix + 'nx' + postfix,
						prefix + 'py' + postfix, prefix + 'ny' + postfix,
						prefix + 'pz' + postfix, prefix + 'nz' + postfix
					];

				};

				const urls = genCubeUrls( 'uploads/threejs/', '.png' );

				new THREE.CubeTextureLoader().load( urls, function ( cubeTexture ) {

					cubeTexture.encoding = THREE.sRGBEncoding;

					scene.background = cubeTexture;

					cubeCamera.update( renderer, scene );

					lightProbe.copy( LightProbeGenerator.fromCubeRenderTarget( renderer, cubeRenderTarget ) );

					scene.add( new LightProbeHelper( lightProbe, 5 ) );

					render();

				} );

				// listener
				window.addEventListener( 'resize', onWindowResize );

			}

			function onWindowResize() {

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

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

				render();

			}

			function render() {

				renderer.render( scene, camera );

			}