three.js的PlaneBufferGeometry怎么创建一个球体

要创建一个球体，应该使用SphereBufferGeometry而不是PlaneBufferGeometry。SphereBufferGeometry是three.js中的一个内置几何体，可以轻松创建球体。

以下是一个简单的示例代码，用于创建一个半径为1的球体：

const geometry = new THREE.SphereBufferGeometry(1, 32, 32);

这将创建一个具有32个水平和垂直分段的球体，其中每个分段都由数百个三角形组成。您可以在第一个参数中指定球体的半径。

相关问题

three.js建模一个球体

Sure! Three.js is a JavaScript library that allows you to create and display 3D graphics in a web browser. To model a sphere using Three.js, you can follow these steps:

1. Include the Three.js library in your HTML file by adding the following script tag:

   <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>

2. Create a scene, camera, and renderer:

   const scene = new THREE.Scene();
   const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
   const renderer = new THREE.WebGLRenderer();
   renderer.setSize(window.innerWidth, window.innerHeight);
   document.body.appendChild(renderer.domElement);

3. Create a sphere geometry and material:

   const geometry = new THREE.SphereGeometry(1, 32, 32);
   const material = new THREE.MeshBasicMaterial({ color: 0x00ff00 });

4. Create a mesh by combining the geometry and material:

   const sphere = new THREE.Mesh(geometry, material);
   scene.add(sphere);

5. Position the camera and sphere:

   camera.position.z = 5;
   sphere.position.set(0, 0, 0);

6. Create an animation loop to render the scene:

   function animate() {
     requestAnimationFrame(animate);
     sphere.rotation.x += 0.01;
     sphere.rotation.y += 0.01;
     renderer.render(scene, camera);
   }
   animate();

This code will create a green sphere in the center of the screen that rotates slowly. You can customize the sphere's size, position, color, and other properties according to your needs.

vue three.js绘制一个三维球体

可以使用Three.js提供的SphereGeometry和MeshPhongMaterial创建一个具有光泽感的球体。以下是一个示例代码：

<template>
  <div id="container"></div>
</template>

<script>
import * as THREE from 'three'
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls'

export default {
  mounted() {
    const container = document.getElementById('container')
    const scene = new THREE.Scene()
    const camera = new THREE.PerspectiveCamera(
      75, container.clientWidth / container.clientHeight, 0.1, 1000
    )
    camera.position.z = 5
      
    const renderer = new THREE.WebGLRenderer()
    renderer.setSize(container.clientWidth, container.clientHeight)
    container.appendChild(renderer.domElement)
    
    const controls = new OrbitControls(camera, renderer.domElement)
      
    const sphereGeometry = new THREE.SphereGeometry(1, 32, 32)
    const sphereMaterial = new THREE.MeshPhongMaterial({
      color: 0xffffff,
      specular: 0x222222,
      shininess: 25
    })
    const sphere = new THREE.Mesh(sphereGeometry, sphereMaterial)
    scene.add(sphere)
      
    const ambientLight = new THREE.AmbientLight(0x404040)
    scene.add(ambientLight)
    
    const pointLight = new THREE.PointLight(0xffffff, 1, 100)
    pointLight.position.set(10, 10, 10)
    scene.add(pointLight)
    
    const animate = function () {
      requestAnimationFrame(animate)
    
      sphere.rotation.x += 0.01
      sphere.rotation.y += 0.01
    
      renderer.render(scene, camera)
    }
    
    animate()
  }
}
</script>

这个代码在Vue.js项目中使用Three.js创建了一个带有OrbitControls（鼠标交互控制）的场景。可以根据需要修改球体的大小、材质等属性。