examples/webgl_loader_stl.html

<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - STL</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> -
			STL loader test by <a href="https://github.com/aleeper" target="_blank" rel="noopener">aleeper</a>.<br/>
			PR2 head from <a href="http://www.ros.org/wiki/pr2_description">www.ros.org</a>
		</div>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.module.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';

			import Stats from 'three/addons/libs/stats.module.js';

			import { STLLoader } from 'three/addons/loaders/STLLoader.js';

			let container, stats;

			let camera, cameraTarget, scene, renderer;

			init();

			function init() {

				container = document.createElement( 'div' );
				document.body.appendChild( container );

				camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 1, 15 );
				camera.position.set( 3, 0.15, 3 );

				cameraTarget = new THREE.Vector3( 0, - 0.25, 0 );

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0x72645b );
				scene.fog = new THREE.Fog( 0x72645b, 2, 15 );

				// Ground

				const plane = new THREE.Mesh(
					new THREE.PlaneGeometry( 40, 40 ),
					new THREE.MeshPhongMaterial( { color: 0xcbcbcb, specular: 0x474747 } )
				);
				plane.rotation.x = - Math.PI / 2;
				plane.position.y = - 0.5;
				scene.add( plane );

				plane.receiveShadow = true;


				// ASCII file

				const loader = new STLLoader();
				loader.load( './models/stl/ascii/slotted_disk.stl', function ( geometry ) {

					const material = new THREE.MeshPhongMaterial( { color: 0xff9c7c, specular: 0x494949, shininess: 200 } );
					const mesh = new THREE.Mesh( geometry, material );

					mesh.position.set( 0, - 0.25, 0.6 );
					mesh.rotation.set( 0, - Math.PI / 2, 0 );
					mesh.scale.set( 0.5, 0.5, 0.5 );

					mesh.castShadow = true;
					mesh.receiveShadow = true;

					scene.add( mesh );

				} );


				// Binary files

				const material = new THREE.MeshPhongMaterial( { color: 0xd5d5d5, specular: 0x494949, shininess: 200 } );

				loader.load( './models/stl/binary/pr2_head_pan.stl', function ( geometry ) {

					const mesh = new THREE.Mesh( geometry, material );

					mesh.position.set( 0, - 0.37, - 0.6 );
					mesh.rotation.set( - Math.PI / 2, 0, 0 );
					mesh.scale.set( 2, 2, 2 );

					mesh.castShadow = true;
					mesh.receiveShadow = true;

					scene.add( mesh );

				} );

				loader.load( './models/stl/binary/pr2_head_tilt.stl', function ( geometry ) {

					const mesh = new THREE.Mesh( geometry, material );

					mesh.position.set( 0.136, - 0.37, - 0.6 );
					mesh.rotation.set( - Math.PI / 2, 0.3, 0 );
					mesh.scale.set( 2, 2, 2 );

					mesh.castShadow = true;
					mesh.receiveShadow = true;

					scene.add( mesh );

				} );

				// Colored binary STL
				loader.load( './models/stl/binary/colored.stl', function ( geometry ) {

					let meshMaterial = material;

					if ( geometry.hasColors ) {

						meshMaterial = new THREE.MeshPhongMaterial( { opacity: geometry.alpha, vertexColors: true } );

					}

					const mesh = new THREE.Mesh( geometry, meshMaterial );

					mesh.position.set( 0.5, 0.2, 0 );
					mesh.rotation.set( - Math.PI / 2, Math.PI / 2, 0 );
					mesh.scale.set( 0.3, 0.3, 0.3 );

					mesh.castShadow = true;
					mesh.receiveShadow = true;

					scene.add( mesh );

				} );


				// Lights

				scene.add( new THREE.HemisphereLight( 0x8d7c7c, 0x494966, 3 ) );

				addShadowedLight( 1, 1, 1, 0xffffff, 3.5 );
				addShadowedLight( 0.5, 1, - 1, 0xffd500, 3 );
				// renderer

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( animate );

				renderer.shadowMap.enabled = true;

				container.appendChild( renderer.domElement );

				// stats

				stats = new Stats();
				container.appendChild( stats.dom );

				//

				window.addEventListener( 'resize', onWindowResize );

			}

			function addShadowedLight( x, y, z, color, intensity ) {

				const directionalLight = new THREE.DirectionalLight( color, intensity );
				directionalLight.position.set( x, y, z );
				scene.add( directionalLight );

				directionalLight.castShadow = true;

				const d = 1;
				directionalLight.shadow.camera.left = - d;
				directionalLight.shadow.camera.right = d;
				directionalLight.shadow.camera.top = d;
				directionalLight.shadow.camera.bottom = - d;

				directionalLight.shadow.camera.near = 1;
				directionalLight.shadow.camera.far = 4;

				directionalLight.shadow.bias = - 0.002;

			}

			function onWindowResize() {

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

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

			}

			function animate() {

				render();
				stats.update();

			}

			function render() {

				const timer = Date.now() * 0.0005;

				camera.position.x = Math.cos( timer ) * 3;
				camera.position.z = Math.sin( timer ) * 3;

				camera.lookAt( cameraTarget );

				renderer.render( scene, camera );

			}

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