效果预览：效果预览
源码下载：关注公众号【RMRF】，回复【three1】可获取源码
一、安装
npm install three
1
二、App.vue
<template>
<div id="container"></div>
</template>
<script>
import * as THREE from "three"
import Stats from "three/examples/jsm/libs/stats.module.js"
import { OrbitControls } from "three/examples/jsm/controls/OrbitControls"
export default {
data() {
return {
scene: null,
camera: null,
renderer: null,
stats: null,
pointsCloud: null,
bufferGeometry: null,
positions: [],
colors: [],
num: 0,
timer: null
}
},
mounted() {
this.init()
},
methods: {
// 初始化
init() {
const el = document.getElementById("container")
this.initScene()
this.initCamera()
this.initRenderer(el)
this.initOrbitControls()
this.initAxesHelper()
this.initCube()
this.initStats(el)
this.render()
},
// 场景
initScene() {
this.scene = new THREE.Scene()
this.scene.background = new THREE.Color(0x000000)
},
// 相机
initCamera() {
this.camera = new THREE.PerspectiveCamera(
45, window.innerWidth / window.innerHeight, 1, 5000
)
this.camera.position.set(1000, 0, -2000)
},
// 渲染器
initRenderer(el) {
this.renderer = new THREE.WebGLRenderer({
antialias: true,
})
this.renderer.setClearColor(0xeeeeee, 1.0)
this.renderer.setSize(window.innerWidth, window.innerHeight)
el.appendChild(this.renderer.domElement)
},
// 缩放
initOrbitControls() {
let controls = new OrbitControls(this.camera, this.renderer.domElement)
controls.addEventListener("change", this.render)
},
// 坐标轴
initAxesHelper() {
const axes = new THREE.AxesHelper(2000)
this.scene.add(axes)
},
// 正方体
initCube() {
const material = new THREE.PointsMaterial({
size: 1,
vertexColors: true,
})
this.bufferGeometry = new THREE.BufferGeometry()
this.pointsCloud = new THREE.Points()
this.pointsCloud.material = material
this.scene.add(this.pointsCloud)
this.timer = setInterval(() => {
this.initCubeData()
}, 1)
},
initCubeData() {
if (this.num > 1000000) {
clearInterval(this.timer)
return
}
this.num = this.num + 1
const n = 1000
const n2 = n / 2
let x = Math.random() * n - n2
let y = Math.random() * n - n2
let z = Math.random() * n - n2
let vx = x / n + 0.5
let vy = y / n + 0.5
let vz = z / n + 0.5
this.colors.push(vx, vy, vz)
this.positions.push(x, y, z)
this.bufferGeometry.setAttribute(
"position",
new THREE.Float32BufferAttribute(this.positions, 3)
)
this.bufferGeometry.setAttribute(
"color",
new THREE.Float32BufferAttribute(this.colors, 3)
)
this.pointsCloud.geometry = this.bufferGeometry
this.render()
},
// 性能
initStats(el) {
this.stats = new Stats()
el.appendChild(this.stats.dom)
this.requestAnimationFrame()
},
requestAnimationFrame() {
this.stats.update();
requestAnimationFrame(this.requestAnimationFrame);
},
// 渲染
render() {
this.renderer.render(this.scene, this.camera)
},
}
}
</script>
<style>
* {
padding: 0px;
margin: 0px;
}
</style>
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