three.js根据这四个顶点-1320822.9062981016, 5631120.870140801, 2679206.4456309075, -1320886.632368332, 5631092.055122116, 2679243.3836740777, -1320894.7952468882, 5631078.198841854, 2679268.450626438, -1320849.726906815, 5631081.5218384825, 2679283.6856274493,,绘制出只有四面的无顶无底的多面体mesh
时间: 2023-09-21 09:13:57 浏览: 111
你可以使用Three.js的Geometry对象和Mesh对象来创建一个只有四面的无顶无底的多面体。首先,你需要创建一个Geometry对象,并添加四个顶点坐标到该对象中。代码如下:
```javascript
var geometry = new THREE.Geometry();
geometry.vertices.push(
new THREE.Vector3(-1320822.9062981016, 5631120.870140801, 2679206.4456309075),
new THREE.Vector3(-1320886.632368332, 5631092.055122116, 2679243.3836740777),
new THREE.Vector3(-1320894.7952468882, 5631078.198841854, 2679268.450626438),
new THREE.Vector3(-1320849.726906815, 5631081.5218384825, 2679283.6856274493)
);
```
接下来,你需要创建一个面对象,并将四个顶点索引添加到该对象中。代码如下:
```javascript
var face = new THREE.Face3(0, 1, 2);
geometry.faces.push(face);
face = new THREE.Face3(0, 2, 3);
geometry.faces.push(face);
```
最后,你可以使用Geometry对象创建一个Mesh对象,并将其添加到场景中进行渲染。代码如下:
```javascript
var material = new THREE.MeshBasicMaterial({ color: 0x00ff00 });
var mesh = new THREE.Mesh(geometry, material);
scene.add(mesh);
```
请确保你已经设置好了场景、相机和渲染器,并且将渲染器的输出添加到HTML页面中。这样,你就可以在浏览器中看到绘制出的多面体了。
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