几何体-顶点/线模型，HTML代码在线实时编辑、实时预览

            
                1
2
3
4
5
6
7
8
9
10
11
12
13

            
            <!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <style>
    body { margin: 0; }
    canvas { display: block; }
  </style>
</head>
<body>
  <script src="./main.js"></script>
</body>
</html>

            
                1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54

            
            import * as THREE from 'three';
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js';
import { GUI } from 'three/addons/libs/lil-gui.module.min.js';

const vertices = new Float32Array([
    0, 0, 0, //顶点1坐标
    50, 0, 0, //顶点2坐标
    0, 100, 0, //顶点3坐标
    0, 0, 10, //顶点4坐标
    0, 0, 100, //顶点5坐标
    50, 0, 10, //顶点6坐标
])

const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 3000);
const renderer = new THREE.WebGLRenderer();

const geometry = new THREE.BufferGeometry(); // 缓冲类型几何体，可自定义任何形状的几何体
const attribue = new THREE.BufferAttribute(vertices, 3); // 3个为一组，表示一个顶点的xzy坐标
const material = new THREE.PointsMaterial({
  color: 0xff0000, 
  size: 5, // 点对象像素尺寸
});
// const mesh = new THREE.Points(geometry, material); // 点对象模型
const mesh = new THREE.LineLoop(geometry, material); // 线模型对象：Line、LineLoop、LineSegments
const axesHelper = new THREE.AxesHelper(150);

const controls = new OrbitControls(camera, renderer.domElement);

geometry.attributes.position = attribue; // 设置几何体顶点位置属性

mesh.position.set(50, 50, 100);

scene.add(mesh);
scene.add(axesHelper);

camera.position.set(-200, 100, 300);
camera.lookAt(mesh.position);

renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setClearColor(0x444444, 1);
renderer.render(scene, camera);

document.body.appendChild(renderer.domElement);

/**
  旋转：拖动鼠标左键
  缩放：滚动鼠标中键
  平移：拖动鼠标右键
*/
controls.addEventListener('change', () => {
  renderer.render(scene, camera);
  // console.log('camera.position',camera.position);
})

            
                1
2
3
4
5

            
            {
  "dependencies": {
    "three": "0.173.0"
  }
}