javascript
/
three.js
mirror of https://github.com/tazdij/three.js.git


			
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - exporter - obj</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>
			.floating {
				background : #000000;
				opacity : 0.8;
				width : 80%;
				height : 80%;
				position : absolute;
				left : 10%;
				top : 10%;
				border : 1px solid #555555;
				padding : 10px;
				display : none;
				overflow : auto;
				z-index: 100;
			}
		</style>
	</head>
	<body>
		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - exporter - obj<br /><br />
			<button id="triangle">triangle</button>
			<button id="cube">cube</button>
			<button id="cylinder">cylinder</button>
			<button id="multiple">multiple</button>
			<button id="transformed">transformed</button><br /><br />
			<button id="export">export to obj</button>
		</div>

		<script type="module">
			import {
				BoxBufferGeometry,
				BufferGeometry,
				CylinderBufferGeometry,
				DirectionalLight,
				Float32BufferAttribute,
				Mesh,
				MeshLambertMaterial,
				PerspectiveCamera,
				Scene,
				WebGLRenderer
			} from "../build/three.module.js";

			import { OBJExporter } from './jsm/exporters/OBJExporter.js';

			var camera, scene, light, renderer;
			var exportButton, floatingDiv;
			var mouseX = 0, mouseY = 0;

			function exportToObj() {

				var exporter = new OBJExporter();
				var result = exporter.parse( scene );
				floatingDiv.style.display = 'block';
				floatingDiv.innerHTML = result.split( '\n' ).join( '<br />' );

			}

			function addGeometry( type ) {

				for ( var i = 0; i < scene.children.length; i ++ ) {

					var child = scene.children[ i ];

					if ( child.isMesh ) {

						child.geometry.dispose();
						scene.remove( child );
						i --;

					}

				}

				if ( type === 1 ) {

					var material = new MeshLambertMaterial( { color: 0x00cc00 } );
					var geometry = generateTriangleGeometry();

					scene.add( new Mesh( geometry, material ) );


				} else if ( type === 2 ) {

					var material = new MeshLambertMaterial( { color: 0x00cc00 } );
					var geometry = new BoxBufferGeometry( 100, 100, 100 );
					scene.add( new Mesh( geometry, material ) );

				} else if ( type === 3 ) {

					var material = new MeshLambertMaterial( { color: 0x00cc00 } );
					var geometry = new CylinderBufferGeometry( 50, 50, 100, 30, 1 );
					scene.add( new Mesh( geometry, material ) );

				} else if ( type === 4 || type === 5 ) {

					var material = new MeshLambertMaterial( { color: 0x00cc00 } );
					var geometry = generateTriangleGeometry();

					var mesh = new Mesh( geometry, material );
					mesh.position.x = - 200;
					scene.add( mesh );

					var geometry2 = new BoxBufferGeometry( 100, 100, 100 );
					var mesh2 = new Mesh( geometry2, material );
					scene.add( mesh2 );

					var geometry3 = new CylinderBufferGeometry( 50, 50, 100, 30, 1 );
					var mesh3 = new Mesh( geometry3, material );
					mesh3.position.x = 200;
					scene.add( mesh3 );

					if ( type === 5 ) {

						mesh.rotation.y = Math.PI / 4.0;
						mesh2.rotation.y = Math.PI / 4.0;
						mesh3.rotation.y = Math.PI / 4.0;

					}

				}

			}

			function init() {

				renderer = new WebGLRenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				document.body.appendChild( renderer.domElement );

				camera = new PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 1000 );
				camera.position.set( 0, 0, 400 );

				scene = new Scene();

				light = new DirectionalLight( 0xffffff );
				scene.add( light );

				addGeometry( 1 );

				window.addEventListener( 'click', onWindowClick, false );
				window.addEventListener( 'resize', onWindowResize, false );
				document.addEventListener( 'mousemove', onDocumentMouseMove, false );
				document.addEventListener( 'mouseover', onDocumentMouseMove, false );

				document.getElementById( 'triangle' ).addEventListener( 'click', function () {

					addGeometry( 1 );

				} );
				document.getElementById( 'cube' ).addEventListener( 'click', function () {

					addGeometry( 2 );

				} );
				document.getElementById( 'cylinder' ).addEventListener( 'click', function () {

					addGeometry( 3 );

				} );
				document.getElementById( 'multiple' ).addEventListener( 'click', function () {

					addGeometry( 4 );

				} );
				document.getElementById( 'transformed' ).addEventListener( 'click', function () {

					addGeometry( 5 );

				} );

				exportButton = document.getElementById( 'export' );
				exportButton.addEventListener( 'click', function () {

					exportToObj();

				} );

				floatingDiv = document.createElement( 'div' );
				floatingDiv.className = 'floating';
				document.body.appendChild( floatingDiv );

			}

			function onWindowClick( event ) {

				var needToClose = true;
				var target = event.target;

				while ( target !== null ) {

					if ( target === floatingDiv || target === exportButton ) {

						needToClose = false;
						break;

					}

					target = target.parentElement;

				}

				if ( needToClose ) {

					floatingDiv.style.display = 'none';

				}

			}

			function onWindowResize() {

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

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

			}

			function onDocumentMouseMove( event ) {

				var windowHalfX = window.innerWidth / 2;
				var windowHalfY = window.innerHeight / 2;
				mouseX = ( event.clientX - windowHalfX ) / 2;
				mouseY = ( event.clientY - windowHalfY ) / 2;

			}

			function animate() {

				requestAnimationFrame( animate );

				camera.position.x += ( mouseX - camera.position.x ) * 0.05;
				camera.position.y += ( - mouseY - camera.position.y ) * 0.05;
				camera.lookAt( scene.position );

				light.position.set( camera.position.x, camera.position.y, camera.position.z ).normalize();
				renderer.render( scene, camera );

			}

			function generateTriangleGeometry() {

				var geometry = new BufferGeometry();
				var vertices = [];

				vertices.push( - 50, - 50, 0 );
				vertices.push( 50, - 50, 0 );
				vertices.push( 50, 50, 0 );

				geometry.addAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
				geometry.computeVertexNormals();

				return geometry;

			}

			init();
			animate();


		</script>

	</body>
</html>