import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls'; import { STLLoader } from 'three/examples/jsm/loaders/STLLoader'; import * as THREE from 'three'; import MeshObject from './mesh_object'; export default class Renderer { constructor(container) { this.renderWrapper = this.render.bind(this); this.objects = []; this.container = container; this.width = this.container.offsetWidth; this.height = 500; this.loader = new STLLoader(); this.fov = 45; this.camera = new THREE.PerspectiveCamera(this.fov, this.width / this.height, 1, 1000); this.scene = new THREE.Scene(); this.scene.add(this.camera); // Set up the viewer this.setupRenderer(); this.setupGrid(); this.setupLight(); // Set up OrbitControls this.controls = new OrbitControls(this.camera, this.renderer.domElement); this.controls.minDistance = 5; this.controls.maxDistance = 30; this.controls.enableKeys = false; this.loadFile(); } setupRenderer() { this.renderer = new THREE.WebGLRenderer({ antialias: true, }); this.renderer.setClearColor(0xffffff); this.renderer.setPixelRatio(window.devicePixelRatio); this.renderer.setSize(this.width, this.height); } setupLight() { // Point light illuminates the object const pointLight = new THREE.PointLight(0xffffff, 2, 0); pointLight.castShadow = true; this.camera.add(pointLight); // Ambient light illuminates the scene const ambientLight = new THREE.AmbientLight(0xffffff, 1); this.scene.add(ambientLight); } setupGrid() { this.grid = new THREE.GridHelper(20, 20, 0x000000, 0x000000); this.scene.add(this.grid); } loadFile() { this.loader.load(this.container.dataset.endpoint, (geo) => { const obj = new MeshObject(geo); this.objects.push(obj); this.scene.add(obj); this.start(); this.setDefaultCameraPosition(); }); } start() { // Empty the container first this.container.innerHTML = ''; // Add to DOM this.container.appendChild(this.renderer.domElement); // Make controls visible this.container.parentNode.classList.remove('is-stl-loading'); this.render(); } render() { this.renderer.render(this.scene, this.camera); requestAnimationFrame(this.renderWrapper); } changeObjectMaterials(material) { this.objects.forEach((obj) => { obj.changeMaterial(material); }); } setDefaultCameraPosition() { const obj = this.objects[0]; const radius = obj.geometry.boundingSphere.radius / 1.5; const dist = radius / Math.sin((this.fov * (Math.PI / 180)) / 2); this.camera.position.set(0, dist + 1, dist); this.camera.lookAt(this.grid); this.controls.update(); } }