使用 FBXLoader 加载的相交对象——Three.js

Question

我正在使用 FBXLoader 加载一个 fbx 文件。它已成功加载并添加到场景对象中。我想在单击时获取此对象以应用转换控件。除了通过 FBXLoader 加载之外，所有其他对象都是可点击的。

var loader = new THREE.FBXLoader( manager );
            loader.load( 'assets/models/fbx/iphone_ascii.fbx', function( object ) {
                scene.add( object );
            }, onProgress, onError );

这是我的路口代码：

onMouseDown(event) {
event.preventDefault();
event.stopPropagation();
event.stopImmediatePropagation();
let rect = this.renderer.domElement.getBoundingClientRect();

this.mouse.x = ((event.clientX - rect.left) / (this.viewportWidth)) * 2 - 1;
this.mouse.y = - ((event.clientY - rect.top) / (this.viewportHeight)) * 2 + 1;
let vector = new THREE.Vector3( this.mouse.x, this.mouse.y, 1 );

vector.unproject(this.camera);

let ray = new THREE.Raycaster( this.camera.position, vector.sub(this.camera.position).normalize() );

let intersects = ray.intersectObjects(this.scene.children);

if (intersects.length > 0) {
  if (this.activeobject !== intersects[0].object) {
    this.activeobject = intersects[0].object;
    this.transformControls.detach(this.activeobject);
    this.transformControls.attach(this.activeobject);
  }
}

this.renderer.render(this.scene, this.camera);  }

Answer 1

从THREE.Raycaster docs，请注意intersectObjects(objects, recursive) 采用第二个参数。因为像 FBX 这样的模型通常是嵌套对象的集合，所以您需要使用 recursive 选项。

let intersects = ray.intersectObjects(this.scene.children, true);