midas
/
threejs-obj-space


			
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - OBJLoader2 usage options</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>
			#glFullscreen {
				width: 100%;
				height: 100vh;
				min-width: 640px;
				min-height: 360px;
				position: relative;
				overflow: hidden;
				z-index: 0;
			}
			#example {
				width: 100%;
				height: 100%;
				top: 0;
				left: 0;
				background-color: #000000;
			}
			#feedback {
				color: darkorange;
			}
			#dat {
				user-select: none;
				position: absolute;
				left: 0;
				top: 0;
				z-Index: 200;
			}
		</style>

	</head>

	<body>
		<div id="glFullscreen">
			<canvas id="example"></canvas>
		</div>
		<div id="dat">

		</div>
		<div id="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - OBJLoader2 usage options
			<div id="feedback"></div>
		</div>

		<script type="module">

			'use strict';

			import * as THREE from '../build/three.module.js';
			import { GUI } from './jsm/libs/dat.gui.module.js';

			import { TrackballControls } from "./jsm/controls/TrackballControls.js";
			import { VertexNormalsHelper } from "./jsm/helpers/VertexNormalsHelper.js";

			import { MTLLoader } from "./jsm/loaders/MTLLoader.js";
			import { MtlObjBridge } from "./jsm/loaders/obj2/bridge/MtlObjBridge.js";
			import { OBJLoader2 } from "./jsm/loaders/OBJLoader2.js";
			import { OBJLoader2Parallel } from "./jsm/loaders/OBJLoader2Parallel.js";
			import { LoadedMeshUserOverride } from "./jsm/loaders/obj2/shared/MeshReceiver.js";

			const WWOBJLoader2Example = function ( elementToBindTo ) {
				this.renderer = null;
				this.canvas = elementToBindTo;
				this.aspectRatio = 1;
				this.recalcAspectRatio();

				this.scene = null;
				this.cameraDefaults = {
					posCamera: new THREE.Vector3( 0.0, 175.0, 500.0 ),
					posCameraTarget: new THREE.Vector3( 0, 0, 0 ),
					near: 0.1,
					far: 10000,
					fov: 45
				};
				this.camera = null;
				this.cameraTarget = this.cameraDefaults.posCameraTarget;

				this.controls = null;

				this.flatShading = false;
				this.doubleSide = false;

				this.cube = null;
				this.pivot = null;
			};

			WWOBJLoader2Example.prototype = {

				constructor: WWOBJLoader2Example,

				initGL: function () {
					this.renderer = new THREE.WebGLRenderer( {
						canvas: this.canvas,
						antialias: true,
						autoClear: true
					} );
					this.renderer.setClearColor( 0x050505 );

					this.scene = new THREE.Scene();

					this.camera = new THREE.PerspectiveCamera( this.cameraDefaults.fov, this.aspectRatio, this.cameraDefaults.near, this.cameraDefaults.far );
					this.resetCamera();
					this.controls = new TrackballControls( this.camera, this.renderer.domElement );

					let ambientLight = new THREE.AmbientLight( 0x404040 );
					let directionalLight1 = new THREE.DirectionalLight( 0xC0C090 );
					let directionalLight2 = new THREE.DirectionalLight( 0xC0C090 );

					directionalLight1.position.set( -100, -50, 100 );
					directionalLight2.position.set( 100, 50, -100 );

					this.scene.add( directionalLight1 );
					this.scene.add( directionalLight2 );
					this.scene.add( ambientLight );

					let helper = new THREE.GridHelper( 1200, 60, 0xFF4444, 0x404040 );
					this.scene.add( helper );

					let geometry = new THREE.BoxBufferGeometry( 10, 10, 10 );
					let material = new THREE.MeshNormalMaterial();
					this.cube = new THREE.Mesh( geometry, material );
					this.cube.position.set( 0, 0, 0 );
					this.scene.add( this.cube );

					this.pivot = new THREE.Object3D();
					this.pivot.name = 'Pivot';
					this.scene.add( this.pivot );
				},

				useParseMain: function () {
					let modelName = 'female02';
					this._reportProgress( { detail: { text: 'Loading: ' + modelName } } );

					let objLoader2 = new OBJLoader2()
						.setModelName( modelName );

					let scope = this;
					function onLoadMtl ( mtlParseResult ) {
						objLoader2.addMaterials( MtlObjBridge.addMaterialsFromMtlLoader( mtlParseResult ), true );

						let fileLoader = new THREE.FileLoader();
						fileLoader.setPath( '' );
						fileLoader.setResponseType( 'arraybuffer' );
						fileLoader.load( 'models/obj/female02/female02.obj',
							function ( content, message ) {
								let local = new THREE.Object3D();
								local.name = 'Pivot_female02';
								local.position.set( 75, 0, 0 );
								scope.pivot.add( local );
								local.add( objLoader2.parse( content ) );

								scope._reportProgress( { detail: { text: 'Loading of ' + modelName + 'completed: ' + message } } );
							}
						);
					}

					let mtlLoader = new MTLLoader();
					mtlLoader.load( 'models/obj/female02/female02.mtl', onLoadMtl );
				},

				useParseParallel: function () {
					let modelName = 'female02_vertex' ;
					this._reportProgress( { detail: { text: 'Loading: ' + modelName } } );

					let local = new THREE.Object3D();
					local.name = 'Pivot_female02_vertex';
					local.position.set( -75, 0, 0 );
					this.pivot.add( local );

					let scope = this;
					function callbackOnLoad( object3d, message ) {
						local.add( object3d );
						scope._reportProgress( { detail: { text: 'Loading of ' + modelName + 'completed: ' + message } } );
					}

					let materials = {
						tester: new THREE.MeshStandardMaterial()
					};

					let objLoader2Parallel = new OBJLoader2Parallel()
						.setModelName( modelName )
						.setCallbackOnLoad( callbackOnLoad )
						.addMaterials( materials, true );

					let fileLoader = new THREE.FileLoader();
					fileLoader.setPath( '' );
					fileLoader.setResponseType( 'arraybuffer' );
					fileLoader.load( 'models/obj/female02/female02_vertex_colors.obj',
						function ( content ) {
							objLoader2Parallel.parse( content );
						}
					);
				},

				useLoadMain: function () {
					let modelName = 'male02';
					this._reportProgress( { detail: { text: 'Loading: ' + modelName } } );

					let objLoader2 = new OBJLoader2()
					.setModelName( modelName )
					.setUseIndices( true );

					let scope = this;
					function callbackOnLoad ( object3d, message ) {
						let local = new THREE.Object3D();
						local.name = 'Pivot_male02';
						local.position.set( 0, 0, -75 );
						scope.pivot.add( local );
						local.add( object3d );

						scope._reportProgress( { detail: { text: 'Loading of ' + modelName + 'completed: ' + message } } );
					}

					function onLoadMtl ( mtlParseResult ) {
						objLoader2.addMaterials( MtlObjBridge.addMaterialsFromMtlLoader( mtlParseResult ), true );
						objLoader2.load( 'models/obj/male02/male02.obj', callbackOnLoad, null, null, null );
					}

					let mtlLoader = new MTLLoader();
					mtlLoader.load( 'models/obj/male02/male02.mtl', onLoadMtl );
				},

				useLoadParallel: function () {
					let modelName = 'WaltHead';
					this._reportProgress( { detail: { text: 'Loading: ' + modelName } } );

					let local = new THREE.Object3D();
					local.name = 'Pivot_WaltHead';
					local.position.set( -175, 50, 0 );
					let scale = 0.5;
					local.scale.set( scale, scale, scale );
					this.pivot.add( local );

					let objLoader2Parallel = new OBJLoader2Parallel()
						.setModelName( modelName );

					let scope = this;
					function callbackOnLoad ( object3d, message ) {
						local.add( object3d );
						scope._reportProgress( { detail: { text: 'Loading of ' + modelName + 'completed: ' + message } } );
					}
					function onLoadMtl ( mtlParseResult ) {
						objLoader2Parallel.addMaterials( MtlObjBridge.addMaterialsFromMtlLoader( mtlParseResult ), true );
						objLoader2Parallel.load( 'models/obj/walt/WaltHead.obj', callbackOnLoad );
					}

					let mtlLoader = new MTLLoader();
					mtlLoader.load( 'models/obj/walt/WaltHead.mtl', onLoadMtl );
				},

				useLoadMainFallback: function () {
					let local = new THREE.Object3D();
					local.name = 'Pivot_Cerberus';
					local.position.set( 0, 0, 100 );
					let scale = 50;
					local.scale.set( scale, scale, scale );
					this.pivot.add( local );

					let objLoader2Parallel = new OBJLoader2Parallel()
						.setModelName( local.name )
						.setExecuteParallel( false );

					let scope = this;
					function callbackOnLoad ( object3d, message ) {
						local.add( object3d );
						scope._reportProgress( { detail: { text: 'Loading of ' + objLoader2Parallel.modelName + 'completed: ' + message } } );
					}

					objLoader2Parallel.load( 'models/obj/cerberus/Cerberus.obj', callbackOnLoad );
				},

				useLoadParallelMeshAlter: function () {
					let local = new THREE.Object3D();
					local.position.set( 175, -100, 0 );
					local.name = 'Pivot_ninjaHead';
					this.pivot.add( local );

					let objLoader2Parallel = new OBJLoader2Parallel()
						.setModelName( local.name )
						.setBaseObject3d( local );

					// Configure WorkerExecutionSupport to not disregard worker after execution
					objLoader2Parallel.getWorkerExecutionSupport().setTerminateWorkerOnLoad( false );

					function callbackMeshAlter ( event ) {
						let override = new LoadedMeshUserOverride( false, true );

						let mesh = new THREE.Mesh( event.detail.bufferGeometry, event.detail.material );
						mesh.name = event.detail.meshName;
						let helper = new VertexNormalsHelper( mesh, 2, 0x00ff00, 1 );
						helper.name = 'VertexNormalsHelper';

						override.addMesh( mesh );
						override.addMesh( helper );

						return override;
					}
					objLoader2Parallel.setCallbackOnMeshAlter( callbackMeshAlter );

					let scope = this;
					function callbackOnLoad ( object3d, message ) {
						scope._reportProgress( { detail: { text: 'Loading of ' + objLoader2Parallel.modelName + 'completed: ' + message } } );
					}

					objLoader2Parallel.load( 'models/obj/ninja/ninjaHead_Low.obj', callbackOnLoad );
				},

				finalize: function () {
					this._reportProgress( { detail: { text: '' } } );
				},

				_reportProgress: function( event ) {
					let output = '';
					if ( event.detail !== null && event.detail !== undefined && event.detail.text ) {

						output = event.detail.text;

					}
					console.log( 'Progress: ' + output );
					document.getElementById( 'feedback' ).innerHTML = output;
				},

				resizeDisplayGL: function () {
					this.controls.handleResize();

					this.recalcAspectRatio();
					this.renderer.setSize( this.canvas.offsetWidth, this.canvas.offsetHeight, false );

					this.updateCamera();
				},

				recalcAspectRatio: function () {
					this.aspectRatio = ( this.canvas.offsetHeight === 0 ) ? 1 : this.canvas.offsetWidth / this.canvas.offsetHeight;
				},

				resetCamera: function () {
					this.camera.position.copy( this.cameraDefaults.posCamera );
					this.cameraTarget.copy( this.cameraDefaults.posCameraTarget );

					this.updateCamera();
				},

				updateCamera: function () {
					this.camera.aspect = this.aspectRatio;
					this.camera.lookAt( this.cameraTarget );
					this.camera.updateProjectionMatrix();
				},

				render: function () {
					if ( ! this.renderer.autoClear ) this.renderer.clear();

					this.controls.update();

					this.cube.rotation.x += 0.05;
					this.cube.rotation.y += 0.05;

					this.renderer.render( this.scene, this.camera );
				},

				alterShading: function () {
					let scope = this;
					scope.flatShading = ! scope.flatShading;
					console.log( scope.flatShading ? 'Enabling flat shading' : 'Enabling smooth shading');

					scope.traversalFunction = function ( material ) {
						material.flatShading = scope.flatShading;
						material.needsUpdate = true;
					};
					function scopeTraverse ( object3d ) {
						scope.traverseScene( object3d );
					}
					scope.pivot.traverse( scopeTraverse );
				},

				alterDouble: function () {
					let scope = this;
					scope.doubleSide = ! scope.doubleSide;
					console.log( scope.doubleSide ? 'Enabling THREE.DoubleSide materials' : 'Enabling THREE.FrontSide materials');

					scope.traversalFunction = function ( material ) {
						material.side = scope.doubleSide ? THREE.DoubleSide : THREE.FrontSide;
					};

					function scopeTraverse ( object3d ) {
						scope.traverseScene( object3d );
					}
					scope.pivot.traverse( scopeTraverse );
				},

				traverseScene: function ( object3d ) {
					if ( Array.isArray( object3d.material ) ) {

						let materials = object3d.material.materials;
						for ( let name in materials ) {

							if ( materials.hasOwnProperty( name ) )	this.traversalFunction( materials[ name ] );

						}

					} else if ( object3d.material ) {

						this.traversalFunction( object3d.material );

					}
				}

			};

			let app = new WWOBJLoader2Example( document.getElementById( 'example' ) );

			let wwObjLoader2Control = {
				flatShading: app.flatShading,
				doubleSide: app.doubleSide
			};

			let menuDiv = document.getElementById( 'dat' );
			let gui = new GUI( {
				autoPlace: false,
				width: 320
			} );
			menuDiv.appendChild( gui.domElement );

			let folderOptions = gui.addFolder( 'WWOBJLoader2 Options' );
			let controlFlat = folderOptions.add( wwObjLoader2Control, 'flatShading' ).name( 'Flat Shading' );
			controlFlat.onChange( function( value ) {
				console.log( 'Setting flatShading to: ' + value );
				app.alterShading();
			});

			let controlDouble = folderOptions.add( wwObjLoader2Control, 'doubleSide' ).name( 'Double Side Materials' );
			controlDouble.onChange( function( value ) {
				console.log( 'Setting doubleSide to: ' + value );
				app.alterDouble();
			});
			folderOptions.open();


			// init three.js example application
			function resizeWindow () {
				app.resizeDisplayGL();
			}

			function render () {
				requestAnimationFrame( render );
				app.render();
			}
			window.addEventListener( 'resize', resizeWindow, false );

			console.log( 'Starting initialisation phase...' );
			app.initGL();
			app.resizeDisplayGL();

			// kick render loop
			render();

			// Load a file with OBJLoader2.parse on main
			app.useParseMain();

			// Load a file with OBJLoader2Parallel.parse in parallel in worker
			app.useParseParallel();

			// Load a file with OBJLoader.load on main
			app.useLoadMain();

			// Load a file with OBJLoader2Parallel.load in parallel in worker
			app.useLoadParallel();

			// Load a file with OBJLoader2Parallel.load on main with fallback to OBJLoader2.parse
			app.useLoadMainFallback();

			// Load a file with OBJLoader2Parallel.load in parallel in worker and add normals during onMeshAlter
			app.useLoadParallelMeshAlter();
			app.finalize();

		</script>
	</body>
</html>