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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - exporter - exr</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="info">
- <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - exporter - exr
- </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 { EXRExporter, ZIP_COMPRESSION, ZIPS_COMPRESSION, NO_COMPRESSION } from 'three/addons/exporters/EXRExporter.js';
- import { RGBELoader } from 'three/addons/loaders/RGBELoader.js';
- import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
- let scene, camera, renderer, exporter, mesh, controls, renderTarget, dataTexture;
- const params = {
- target: 'pmrem',
- type: 'HalfFloatType',
- compression: 'ZIP',
- export: exportFile
- };
- init();
- function init() {
- renderer = new THREE.WebGLRenderer( { antialias: true } );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- document.body.appendChild( renderer.domElement );
- //
- camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.1, 100 );
- camera.position.set( 10, 0, 0 );
- scene = new THREE.Scene();
- exporter = new EXRExporter();
- const rgbeloader = new RGBELoader();
- //
- const pmremGenerator = new THREE.PMREMGenerator( renderer );
- pmremGenerator.compileEquirectangularShader();
- rgbeloader.load( 'textures/equirectangular/san_giuseppe_bridge_2k.hdr', function ( texture ) {
- texture.mapping = THREE.EquirectangularReflectionMapping;
- renderTarget = pmremGenerator.fromEquirectangular( texture );
- scene.background = renderTarget.texture;
- } );
- createDataTexture();
- //
- controls = new OrbitControls( camera, renderer.domElement );
- controls.enableDamping = true;
- controls.rotateSpeed = - 0.25; // negative, to track mouse pointer
- //
- window.addEventListener( 'resize', onWindowResize );
- const gui = new GUI();
- const input = gui.addFolder( 'Input' );
- input.add( params, 'target' ).options( [ 'pmrem', 'data-texture' ] ).onChange( swapScene );
- const options = gui.addFolder( 'Output Options' );
- options.add( params, 'type' ).options( [ 'FloatType', 'HalfFloatType' ] );
- options.add( params, 'compression' ).options( [ 'ZIP', 'ZIPS', 'NONE' ] );
- gui.add( params, 'export' ).name( 'Export EXR' );
- gui.open();
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- function animate() {
- controls.update();
- renderer.render( scene, camera );
- }
- function createDataTexture() {
- const normal = new THREE.Vector3();
- const coord = new THREE.Vector2();
- const size = 800, radius = 320, factor = Math.PI * 0.5 / radius;
- const data = new Float32Array( 4 * size * size );
- for ( let i = 0; i < size; i ++ ) {
- for ( let j = 0; j < size; j ++ ) {
- const idx = i * size * 4 + j * 4;
- coord.set( j, i ).subScalar( size / 2 );
- if ( coord.length() < radius )
- normal.set(
- Math.sin( coord.x * factor ),
- Math.sin( coord.y * factor ),
- Math.cos( coord.x * factor )
- );
- else
- normal.set( 0, 0, 1 );
- data[ idx + 0 ] = .5 + .5 * normal.x;
- data[ idx + 1 ] = .5 + .5 * normal.y;
- data[ idx + 2 ] = .5 + .5 * normal.z;
- data[ idx + 3 ] = 1.;
- }
- }
- dataTexture = new THREE.DataTexture( data, size, size, THREE.RGBAFormat, THREE.FloatType );
- dataTexture.needsUpdate = true;
- const material = new THREE.MeshBasicMaterial( { map: dataTexture } );
- const quad = new THREE.PlaneGeometry( 50, 50 );
- mesh = new THREE.Mesh( quad, material );
- mesh.visible = false;
- scene.add( mesh );
- }
- function swapScene() {
- if ( params.target == 'pmrem' ) {
- camera.position.set( 10, 0, 0 );
- controls.enabled = true;
- scene.background = renderTarget.texture;
- mesh.visible = false;
- } else {
- camera.position.set( 0, 0, 70 );
- controls.enabled = false;
- scene.background = new THREE.Color( 0, 0, 0 );
- mesh.visible = true;
- }
- }
- async function exportFile() {
- let result, exportType, exportCompression;
- if ( params.type == 'HalfFloatType' )
- exportType = THREE.HalfFloatType;
- else
- exportType = THREE.FloatType;
- if ( params.compression == 'ZIP' )
- exportCompression = ZIP_COMPRESSION;
- else if ( params.compression == 'ZIPS' )
- exportCompression = ZIPS_COMPRESSION;
- else
- exportCompression = NO_COMPRESSION;
- if ( params.target == 'pmrem' )
- result = await exporter.parse( renderer, renderTarget, { type: exportType, compression: exportCompression } );
- else
- result = await exporter.parse( dataTexture, { type: exportType, compression: exportCompression } );
- saveArrayBuffer( result, params.target + '.exr' );
- }
- function saveArrayBuffer( buffer, filename ) {
- const blob = new Blob( [ buffer ], { type: 'image/x-exr' } );
- const link = document.createElement( 'a' );
- link.href = URL.createObjectURL( blob );
- link.download = filename;
- link.click();
- }
- </script>
- </body>
- </html>
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