|  |  | 
 |  |  |         initLight(this.scene); | 
 |  |  |  | 
 |  |  |         this.animate(); | 
 |  |  |         this.build(); | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     animate = () => { | 
 |  |  | 
 |  |  |  | 
 |  |  |     initCamera = () => { | 
 |  |  |         const camera = new THREE.PerspectiveCamera(70, this.getFullWidth() / this.getFullHeight(), 1, 60000); | 
 |  |  |         camera.position.set(-300, 300, 300); | 
 |  |  |         camera.position.set(-400, 400, 400); | 
 |  |  |         this.scene.add(camera); | 
 |  |  |         return camera; | 
 |  |  |     } | 
 |  |  | 
 |  |  |         controls.minPolarAngle = 0; // 最小俯仰角度(向下看) | 
 |  |  |         controls.maxPolarAngle = Math.PI / 2.1; // 最大俯仰角度(向上看) | 
 |  |  |         controls.rotateSpeed = 0.6; // 视角移动速度减慢 | 
 |  |  |         controls.autoRotate = true; // 自动旋转 | 
 |  |  |         controls.autoRotate = false; // 自动旋转 | 
 |  |  |  | 
 |  |  |         controls.target = new THREE.Vector3(0, 0, 0)  // 平替 camera的lookAt | 
 |  |  |         controls.target = new THREE.Vector3(0, 250, 0)  // 屏幕中心点 平替 camera的lookAt | 
 |  |  |         return controls; | 
 |  |  |     } | 
 |  |  |  | 
 |  |  | 
 |  |  |         let that = this; | 
 |  |  |         const raycaster = new THREE.Raycaster(); | 
 |  |  |         const mouse = new THREE.Vector2(); | 
 |  |  |  | 
 |  |  |         this.dom.addEventListener("click", (event) => { | 
 |  |  |             this.handleClick("null"); | 
 |  |  |         }) | 
 |  |  |         this.dom.addEventListener("dblclick", (event) => { | 
 |  |  |         this.handleClickEvent = (event) => { | 
 |  |  |             let x, y; | 
 |  |  |             if (event.changedTouches) { | 
 |  |  |                 x = event.changedTouches[0].pageX; | 
 |  |  | 
 |  |  |                 x = event.clientX; | 
 |  |  |                 y = event.clientY; | 
 |  |  |             } | 
 |  |  |             let rect = this.dom.getBoundingClientRect(); | 
 |  |  |             mouse.x = ((x - rect.left) / rect.width) * 2 - 1; | 
 |  |  |             mouse.y = -((y - rect.top) / rect.height) * 2 + 1; | 
 |  |  |             event.preventDefault(); | 
 |  |  |             mouse.x = (x / window.innerWidth) * 2 - 1; | 
 |  |  |             mouse.y = -(y / window.innerHeight) * 2 + 1; | 
 |  |  |             raycaster.setFromCamera(mouse, that.camera); | 
 |  |  |             let intersects = raycaster.intersectObjects(that.objects, true); | 
 |  |  |             if (intersects.length === 0) { | 
 |  |  |                 this.handleClick("null"); | 
 |  |  |                 return; | 
 |  |  |             } | 
 |  |  |             let objName = intersects[0].object.name; | 
 |  |  |             if (objName.startsWith("locNo")) { | 
 |  |  |  | 
 |  |  |                 if (this.handleClick) { | 
 |  |  |                     this.handleClick(objName, x, y); | 
 |  |  |                 } | 
 |  |  |  | 
 |  |  |             } else { | 
 |  |  |                 this.handleClick("null"); | 
 |  |  |             if (objName && this.handleClick) { | 
 |  |  |                 this.handleClick(objName, x, y); | 
 |  |  |             } | 
 |  |  |  | 
 |  |  |         }, false); | 
 |  |  |         } | 
 |  |  |         this.dom.addEventListener("click", this.handleClickEvent, false); | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     build = () => { | 
 |  |  |         buildDemo(this.scene); | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     handleClick = () => { | 
 |  |  |  | 
 |  |  |     generateMesh = (fn) => { | 
 |  |  |         fn(this.addObject); | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     destroy = () => { | 
 |  |  | 
 |  |  |             this.controls.dispose(); | 
 |  |  |             this.controls = null; | 
 |  |  |         } | 
 |  |  |         this.dom.removeEventListener("click", this.handleClickEvent); | 
 |  |  |         this.camera = null; | 
 |  |  |         this.objects = []; | 
 |  |  |         while (this.dom?.firstChild) { | 
 |  |  | 
 |  |  |     scene.add(ambientLight); | 
 |  |  |  | 
 |  |  |     const spotLight = new THREE.SpotLight(0xffffff, 8); | 
 |  |  |     spotLight.position.set(-300, 300, 0); | 
 |  |  |     spotLight.position.set(-300, 1000, 0); | 
 |  |  |     spotLight.angle = Math.PI / 4;  // 角度 | 
 |  |  |     spotLight.distance = 800;  // 距离 | 
 |  |  |     spotLight.decay = 0;    // 光衰 | 
 |  |  | 
 |  |  |     if (help) { | 
 |  |  |         scene.add(new THREE.SpotLightHelper(spotLight)); | 
 |  |  |     } | 
 |  |  | } | 
 |  |  |  | 
 |  |  | const buildDemo = (scene) => { | 
 |  |  |     const boxGeometry = new THREE.BoxGeometry(100, 100, 100); | 
 |  |  |     const boxMaterial = new THREE.MeshStandardMaterial({ | 
 |  |  |         color: '#222f3e', | 
 |  |  |     }); | 
 |  |  |     const boxMesh = new THREE.Mesh(boxGeometry, boxMaterial); | 
 |  |  |     boxMesh.position.set(0, 0, 0); | 
 |  |  |     scene.add(boxMesh) | 
 |  |  |     return boxMesh; | 
 |  |  | } |