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344 lines
8.8 KiB
344 lines
8.8 KiB
3 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 - materials - channels</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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</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> - <span id="description">Normal, Velocity, Depth, DepthRGBA, DepthRGBAUnpacked, Materials</span><br/>
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by <a href="https://Clara.io">Ben Houston</a>. ninja head from <a href="https://gpuopen.com/archive/gamescgi/amd-gpu-meshmapper/" target="_blank" rel="noopener">AMD GPU MeshMapper</a>
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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 { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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import { OBJLoader } from 'three/addons/loaders/OBJLoader.js';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import { VelocityShader } from 'three/addons/shaders/VelocityShader.js';
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let stats;
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let camera, scene, renderer;
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const params = {
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material: 'normal',
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camera: 'perspective',
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side: 'double'
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};
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const sides = {
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'front': THREE.FrontSide,
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'back': THREE.BackSide,
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'double': THREE.DoubleSide
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};
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let cameraOrtho, cameraPerspective;
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let controlsOrtho, controlsPerspective;
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let mesh, materialStandard, materialDepthBasic, materialDepthRGBA, materialNormal, materialVelocity;
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const SCALE = 2.436143; // from original model
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const BIAS = - 0.428408; // from original model
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init();
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animate();
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initGui();
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// Init gui
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function initGui() {
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const gui = new GUI();
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gui.add( params, 'material', [ 'standard', 'normal', 'velocity', 'depthBasic', 'depthRGBA' ] );
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gui.add( params, 'camera', [ 'perspective', 'ortho' ] );
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gui.add( params, 'side', [ 'front', 'back', 'double' ] );
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}
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function init() {
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const container = document.createElement( 'div' );
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document.body.appendChild( container );
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renderer = new THREE.WebGLRenderer();
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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//
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scene = new THREE.Scene();
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const aspect = window.innerWidth / window.innerHeight;
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cameraPerspective = new THREE.PerspectiveCamera( 45, aspect, 500, 3000 );
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cameraPerspective.position.z = 1500;
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scene.add( cameraPerspective );
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const height = 500;
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cameraOrtho = new THREE.OrthographicCamera( - height * aspect, height * aspect, height, - height, 1000, 2500 );
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cameraOrtho.position.z = 1500;
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scene.add( cameraOrtho );
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camera = cameraPerspective;
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controlsPerspective = new OrbitControls( cameraPerspective, renderer.domElement );
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controlsPerspective.minDistance = 1000;
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controlsPerspective.maxDistance = 2400;
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controlsPerspective.enablePan = false;
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controlsPerspective.enableDamping = true;
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controlsOrtho = new OrbitControls( cameraOrtho, renderer.domElement );
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controlsOrtho.minZoom = 0.5;
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controlsOrtho.maxZoom = 1.5;
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controlsOrtho.enablePan = false;
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controlsOrtho.enableDamping = true;
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// lights
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const ambientLight = new THREE.AmbientLight( 0xffffff, 0.1 );
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scene.add( ambientLight );
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const pointLight = new THREE.PointLight( 0xff0000, 0.5 );
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pointLight.position.z = 2500;
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scene.add( pointLight );
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const pointLight2 = new THREE.PointLight( 0xff6666, 1 );
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camera.add( pointLight2 );
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const pointLight3 = new THREE.PointLight( 0x0000ff, 0.5 );
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pointLight3.position.x = - 1000;
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pointLight3.position.z = 1000;
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scene.add( pointLight3 );
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// textures
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const textureLoader = new THREE.TextureLoader();
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const normalMap = textureLoader.load( 'models/obj/ninja/normal.png' );
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const aoMap = textureLoader.load( 'models/obj/ninja/ao.jpg' );
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const displacementMap = textureLoader.load( 'models/obj/ninja/displacement.jpg' );
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// material
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materialStandard = new THREE.MeshStandardMaterial( {
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color: 0xffffff,
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metalness: 0.5,
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roughness: 0.6,
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displacementMap: displacementMap,
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displacementScale: SCALE,
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displacementBias: BIAS,
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aoMap: aoMap,
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normalMap: normalMap,
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normalScale: new THREE.Vector2( 1, - 1 ),
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//flatShading: true,
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side: THREE.DoubleSide
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} );
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materialDepthBasic = new THREE.MeshDepthMaterial( {
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depthPacking: THREE.BasicDepthPacking,
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displacementMap: displacementMap,
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displacementScale: SCALE,
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displacementBias: BIAS,
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side: THREE.DoubleSide
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} );
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materialDepthRGBA = new THREE.MeshDepthMaterial( {
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depthPacking: THREE.RGBADepthPacking,
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displacementMap: displacementMap,
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displacementScale: SCALE,
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displacementBias: BIAS,
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side: THREE.DoubleSide
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} );
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materialNormal = new THREE.MeshNormalMaterial( {
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displacementMap: displacementMap,
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displacementScale: SCALE,
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displacementBias: BIAS,
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normalMap: normalMap,
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normalScale: new THREE.Vector2( 1, - 1 ),
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//flatShading: true,
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side: THREE.DoubleSide
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} );
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materialVelocity = new THREE.ShaderMaterial( {
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uniforms: THREE.UniformsUtils.clone( VelocityShader.uniforms ),
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vertexShader: VelocityShader.vertexShader,
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fragmentShader: VelocityShader.fragmentShader,
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side: THREE.DoubleSide
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} );
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materialVelocity.uniforms.displacementMap.value = displacementMap;
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materialVelocity.uniforms.displacementScale.value = SCALE;
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materialVelocity.uniforms.displacementBias.value = BIAS;
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materialVelocity.extensions.derivatives = true;
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//
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const loader = new OBJLoader();
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loader.load( 'models/obj/ninja/ninjaHead_Low.obj', function ( group ) {
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const geometry = group.children[ 0 ].geometry;
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geometry.attributes.uv2 = geometry.attributes.uv;
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geometry.center();
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mesh = new THREE.Mesh( geometry, materialNormal );
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mesh.scale.multiplyScalar( 25 );
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mesh.userData.matrixWorldPrevious = new THREE.Matrix4(); // for velocity
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scene.add( mesh );
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} );
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//
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stats = new Stats();
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container.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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const width = window.innerWidth;
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const height = window.innerHeight;
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const aspect = window.innerWidth / window.innerHeight;
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camera.aspect = aspect;
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camera.left = - height * aspect;
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camera.right = height * aspect;
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camera.top = height;
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camera.bottom = - height;
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camera.updateProjectionMatrix();
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renderer.setSize( width, height );
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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stats.begin();
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render();
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stats.end();
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}
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function render() {
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if ( mesh ) {
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let material = mesh.material;
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switch ( params.material ) {
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case 'standard': material = materialStandard; break;
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case 'depthBasic': material = materialDepthBasic; break;
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case 'depthRGBA': material = materialDepthRGBA; break;
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case 'normal': material = materialNormal; break;
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case 'velocity': material = materialVelocity; break;
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}
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if ( sides[ params.side ] !== material.side ) {
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switch ( params.side ) {
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case 'front': material.side = THREE.FrontSide; break;
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case 'back': material.side = THREE.BackSide; break;
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case 'double': material.side = THREE.DoubleSide; break;
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}
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material.needsUpdate = true;
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}
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mesh.material = material;
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}
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switch ( params.camera ) {
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case 'perspective':
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camera = cameraPerspective;
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break;
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case 'ortho':
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camera = cameraOrtho;
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break;
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}
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controlsPerspective.update();
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controlsOrtho.update(); // must update both controls for damping to complete
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// remember camera projection changes
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materialVelocity.uniforms.previousProjectionViewMatrix.value.copy( materialVelocity.uniforms.currentProjectionViewMatrix.value );
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materialVelocity.uniforms.currentProjectionViewMatrix.value.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
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if ( mesh && mesh.userData.matrixWorldPrevious ) {
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materialVelocity.uniforms.modelMatrixPrev.value.copy( mesh.userData.matrixWorldPrevious );
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}
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renderer.render( scene, camera );
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scene.traverse( function ( object ) {
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if ( object.isMesh ) {
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object.userData.matrixWorldPrevious.copy( object.matrixWorld );
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}
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} );
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}
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</script>
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</body>
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</html>
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