用three.js创建一个简易的天空盒
时间: 2023-08-01 07:14:12 浏览: 83
threejs天空盒子
好的,以下是用three.js创建一个简易的天空盒的步骤:
1. 首先,创建一个场景和一个相机:
```javascript
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.set(0, 0, 0);
scene.add(camera);
```
2. 创建一个立方体几何体,将其缩放为无限远的距离(这是为了让相机永远在立方体的中心):
```javascript
var geometry = new THREE.BoxGeometry(1000, 1000, 1000);
geometry.scale(1, 1, -1);
```
3. 加载6个纹理图片,每个图片表示天空盒的一个面,创建一个立方体贴图材质,并将纹理图片添加到材质中:
```javascript
var material = new THREE.MeshBasicMaterial({
map: [
new THREE.TextureLoader().load('right.jpg'),
new THREE.TextureLoader().load('left.jpg'),
new THREE.TextureLoader().load('top.jpg'),
new THREE.TextureLoader().load('bottom.jpg'),
new THREE.TextureLoader().load('front.jpg'),
new THREE.TextureLoader().load('back.jpg')
],
side: THREE.BackSide
});
```
4. 用立方体几何体和立方体贴图材质创建一个网格,并将其添加到场景中:
```javascript
var cube = new THREE.Mesh(geometry, material);
scene.add(cube);
```
5. 最后,创建一个渲染器并将其添加到页面中:
```javascript
var renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
```
完成后,你就可以看到一个简易的天空盒了。完整的代码如下:
```javascript
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.set(0, 0, 0);
scene.add(camera);
var geometry = new THREE.BoxGeometry(1000, 1000, 1000);
geometry.scale(1, 1, -1);
var material = new THREE.MeshBasicMaterial({
map: [
new THREE.TextureLoader().load('right.jpg'),
new THREE.TextureLoader().load('left.jpg'),
new THREE.TextureLoader().load('top.jpg'),
new THREE.TextureLoader().load('bottom.jpg'),
new THREE.TextureLoader().load('front.jpg'),
new THREE.TextureLoader().load('back.jpg')
],
side: THREE.BackSide
});
var cube = new THREE.Mesh(geometry, material);
scene.add(cube);
var renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
function animate() {
requestAnimationFrame(animate);
renderer.render(scene, camera);
}
animate();
```
注意:上述代码中的纹理图片需要放在与index.html同级的文件夹下,并且需要根据实际情况修改文件名和路径。
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