three.js创建星形多面体
时间: 2024-05-23 08:08:41 浏览: 33
Three.js是一个基于WebGL的3D图形库,可以用它来创建各种3D模型,包括星形多面体。下面是使用Three.js创建星形多面体的步骤:
1. 导入Three.js库文件
首先需要将Three.js的库文件导入到HTML页面中,可以通过以下代码来实现:
```
<script src="https://cdn.jsdelivr.net/npm/three@0.128.0/build/three.min.js"></script>
```
2. 创建场景、相机和渲染器
创建Three.js场景、相机和渲染器,可以通过以下代码来实现:
```
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. 创建星形多面体
使用Three.js创建星形多面体需要用到THREE.Geometry()和THREE.Vector3()等相关方法,具体实现过程如下:
```
const geometry = new THREE.Geometry();
const vertices = [
new THREE.Vector3( 0, 0, 0 ), // 中心点
new THREE.Vector3( 0, 2, 0 ),
new THREE.Vector3( 1, 1, 0 ),
new THREE.Vector3( 2, 0, 0 ),
new THREE.Vector3( 1, -1, 0 ),
new THREE.Vector3( 0, -2, 0 ),
new THREE.Vector3( -1, -1, 0 ),
new THREE.Vector3( -2, 0, 0 ),
new THREE.Vector3( -1, 1, 0 )
];
geometry.vertices = vertices;
geometry.faces.push( new THREE.Face3( 0, 1, 2 ) );
geometry.faces.push( new THREE.Face3( 0, 2, 3 ) );
geometry.faces.push( new THREE.Face3( 0, 3, 4 ) );
geometry.faces.push( new THREE.Face3( 0, 4, 5 ) );
geometry.faces.push( new THREE.Face3( 0, 5, 6 ) );
geometry.faces.push( new THREE.Face3( 0, 6, 7 ) );
geometry.faces.push( new THREE.Face3( 0, 7, 8 ) );
geometry.faces.push( new THREE.Face3( 0, 8, 1 ) );
const material = new THREE.MeshBasicMaterial({ color: 0xffffff });
const star = new THREE.Mesh(geometry, material);
scene.add(star);
```
4. 渲染场景
最后一步是使用渲染器渲染场景,可以通过以下代码来实现:
```
function animate() {
requestAnimationFrame( animate );
renderer.render( scene, camera );
}
animate();
```
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