Three.js 投下阴影的问题

我希望我的桌板（桌子表面）和桌腿将它们的阴影投射到地板上

  sceneSetup = () => {
    const width = this.el.clientWidth;
    const height = this.el.clientHeight;
    this.scene = new THREE.Scene();
    this.camera = new THREE.PerspectiveCamera(75, width / height, 0.1, 1000);
    this.camera.position.z = 5;
    this.controls = new OrbitControls(this.camera, this.el);
    this.renderer = new THREE.WebGLRenderer({antialias: true});
    this.renderer.shadowMap.enabled = true;
    this.renderer.setSize(width, height);
    this.el.appendChild(this.renderer.domElement);
  };

灯光

import * as THREE from "three";

export default ({ scene }) => {
    const lights = [];
    lights[0] = new THREE.PointLight(0xffffff, 1, 0);
    lights[0].position.set(0, 200, 0);
    lights[0].castShadow = true;
    scene.add(lights[0]);
  }

对象（网格）

渲染器

  sceneSetup = () => {
    const width = this.el.clientWidth;
    const height = this.el.clientHeight;
    this.scene = new THREE.Scene();
    this.camera = new THREE.PerspectiveCamera(75, width / height, 0.1, 1000);
    this.camera.position.z = 5;
    this.controls = new OrbitControls(this.camera, this.el);
    this.renderer = new THREE.WebGLRenderer({antialias: true});
    this.renderer.shadowMap.enabled = true;
    this.renderer.setSize(width, height);
    this.el.appendChild(this.renderer.domElement);
  };

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尝试类似于此代码部分（）配置阴影，以确保阴影投射和接收对象位于阴影摄影机的平截头体中。您无处不在！谢谢你，穆根，我去看看。