|  |  | 
 |  |  | export default class ShelfThree { | 
 |  |  |  | 
 |  |  |     constructor(dom) { | 
 |  |  |         const { current: container } = dom; | 
 |  |  |         this.fullWidth = container.offsetWidth; | 
 |  |  |         this.fullHeight = container.offsetHeight; | 
 |  |  |         this.scene = this.initScene(); | 
 |  |  |         this.camera = this.initCamera(); | 
 |  |  |         this.renderer = this.initRenderer(container); | 
 |  |  |         this.controls = this.initControls(); | 
 |  |  |         this.stats = this.initStats(container); | 
 |  |  |         this.windowResize(); | 
 |  |  |         this.initRaycaster(container); | 
 |  |  |         initLight(this.scene); | 
 |  |  |         this.dom = dom; | 
 |  |  |         this.fullWidth = dom.offsetWidth; | 
 |  |  |         this.fullHeight = dom.offsetHeight; | 
 |  |  |  | 
 |  |  |         this.objects = []; | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     startup = () => { | 
 |  |  |         this.scene = this.initScene(); | 
 |  |  |         this.camera = this.initCamera(); | 
 |  |  |         this.renderer = this.initRenderer(); | 
 |  |  |         this.controls = this.initControls(); | 
 |  |  |         this.stats = this.initStats(); | 
 |  |  |         this.windowResize(); | 
 |  |  |         this.initRaycaster(); | 
 |  |  |         initLight(this.scene); | 
 |  |  |  | 
 |  |  |         this.animate(); | 
 |  |  |         this.build(); | 
 |  |  |     } | 
 |  |  | 
 |  |  |         this.stats.update(); | 
 |  |  |         // Rotate the scene | 
 |  |  |         this.controls.update() | 
 |  |  |         this.controls.autoRotateSpeed = 0.6; | 
 |  |  |         this.controls.autoRotateSpeed = 2; | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     addObject = (object) => { | 
 |  |  | 
 |  |  |  | 
 |  |  |     initCamera = () => { | 
 |  |  |         const camera = new THREE.PerspectiveCamera(70, this.fullWidth / this.fullHeight, 1, 60000); | 
 |  |  |         camera.position.set(200, 200, 200); | 
 |  |  |         camera.position.set(-300, 300, 300); | 
 |  |  |         this.scene.add(camera); | 
 |  |  |         return camera; | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     initRenderer = (container) => { | 
 |  |  |     initRenderer = () => { | 
 |  |  |         const renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true }); | 
 |  |  |         renderer.setClearAlpha(0); | 
 |  |  |         // renderer.useLegacyLights = false;  // 旧版光源 重要 | 
 |  |  | 
 |  |  |         renderer.toneMapping = THREE.ACESFilmicToneMapping; | 
 |  |  |         renderer.setPixelRatio(window.devicePixelRatio); | 
 |  |  |         renderer.setSize(this.fullWidth, this.fullHeight); | 
 |  |  |         container.appendChild(renderer.domElement); | 
 |  |  |         this.dom.appendChild(renderer.domElement); | 
 |  |  |         return renderer; | 
 |  |  |     } | 
 |  |  |  | 
 |  |  | 
 |  |  |         return controls; | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     initStats = (container) => { | 
 |  |  |     initStats = () => { | 
 |  |  |         const stats = new Stats(); | 
 |  |  |         container.appendChild(stats.dom); | 
 |  |  |         this.dom.appendChild(stats.dom); | 
 |  |  |         if (!help) { | 
 |  |  |             stats.domElement.style.display = 'none'; | 
 |  |  |         } | 
 |  |  | 
 |  |  |         window.addEventListener('resize', this.resizeHandler, false); | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     initRaycaster = (container) => { | 
 |  |  |     initRaycaster = () => { | 
 |  |  |         let that = this; | 
 |  |  |         const raycaster = new THREE.Raycaster(); | 
 |  |  |         const mouse = new THREE.Vector2(); | 
 |  |  |  | 
 |  |  |         container.addEventListener("click", (event) => { | 
 |  |  |         this.dom.addEventListener("click", (event) => { | 
 |  |  |             this.handleClick("null"); | 
 |  |  |         }) | 
 |  |  |         container.addEventListener("dblclick", (event) => { | 
 |  |  |         this.dom.addEventListener("dblclick", (event) => { | 
 |  |  |             let x, y; | 
 |  |  |             if (event.changedTouches) { | 
 |  |  |                 x = event.changedTouches[0].pageX; | 
 |  |  | 
 |  |  |     destroy = () => { | 
 |  |  |         cancelAnimationFrame(this.animationFrame); | 
 |  |  |         window.removeEventListener('resize', this.resizeHandler); | 
 |  |  |         this.renderer.dispose(); | 
 |  |  |         this.controls.dispose(); | 
 |  |  |         if (this.scene) { | 
 |  |  |             while (this.scene.children.length > 0) { | 
 |  |  |                 this.removeEntity(this.scene.children[0]); | 
 |  |  |             } | 
 |  |  |             this.scene = null; | 
 |  |  |         } | 
 |  |  |         if (this.renderer) { | 
 |  |  |             this.renderer.dispose(); | 
 |  |  |             this.renderer.forceContextLoss(); | 
 |  |  |             this.renderer.context = null; | 
 |  |  |             this.renderer.domElement = null; | 
 |  |  |             this.renderer = null; | 
 |  |  |         } | 
 |  |  |         if (this.controls) { | 
 |  |  |             this.controls.dispose(); | 
 |  |  |             this.controls = null; | 
 |  |  |         } | 
 |  |  |         this.camera = null; | 
 |  |  |         this.objects = []; | 
 |  |  |         while (this.dom?.firstChild) { | 
 |  |  |             this.dom.removeChild(this.dom.firstChild); | 
 |  |  |         } | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     removeEntity = (object) => { | 
 |  |  |         if (object.material) object.material.dispose(); | 
 |  |  |         if (object.geometry) object.geometry.dispose(); | 
 |  |  |         if (object.texture) object.texture.dispose(); | 
 |  |  |         this.scene.remove(object); | 
 |  |  |     } | 
 |  |  | }; | 
 |  |  |  | 
 |  |  | const initLight = (scene) => { | 
 |  |  |     const directionalLight = new THREE.DirectionalLight(0xffffff, 0.6); // 光颜色,强度 | 
 |  |  |     directionalLight.position.set(1, 1, 1).normalize(); | 
 |  |  |     const directionalLight = new THREE.DirectionalLight(0xffffff, 8); | 
 |  |  |     directionalLight.position.set(-300, 300, 300); | 
 |  |  |     scene.add(directionalLight); | 
 |  |  |  | 
 |  |  |     const ambientLight = new THREE.AmbientLight(0xf0f0f0, 3); | 
 |  |  |     const ambientLight = new THREE.AmbientLight(0xf0f0f0, 8); | 
 |  |  |     scene.add(ambientLight); | 
 |  |  |  | 
 |  |  |     const spotLight = new THREE.SpotLight(0xffffff, 8); | 
 |  |  |     spotLight.position.set(0, 1000, 0); | 
 |  |  |     spotLight.position.set(-300, 300, 0); | 
 |  |  |     spotLight.angle = Math.PI / 4;  // 角度 | 
 |  |  |     spotLight.distance = 1500;  // 距离 | 
 |  |  |     spotLight.distance = 800;  // 距离 | 
 |  |  |     spotLight.decay = 0;    // 光衰 | 
 |  |  |     // 光照阴影及其生效范围 | 
 |  |  |     spotLight.castShadow = true; | 
 |  |  | 
 |  |  |  | 
 |  |  | const buildDemo = (scene) => { | 
 |  |  |     const boxGeometry = new THREE.BoxGeometry(100, 100, 100); | 
 |  |  |     const boxMaterial = new THREE.MeshBasicMaterial({ color: 0x40739e }); | 
 |  |  |     const boxMaterial = new THREE.MeshStandardMaterial({ | 
 |  |  |         color: '#222f3e', | 
 |  |  |     }); | 
 |  |  |     const boxMesh = new THREE.Mesh(boxGeometry, boxMaterial); | 
 |  |  |     boxMesh.position.set(0, 0, 0); | 
 |  |  |     scene.add(boxMesh) |