如何将 Threejs 连接到 React? [英] How to connect Threejs to React?
本文介绍了如何将 Threejs 连接到 React?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我使用 React 并使用画布.我想将画布更改为 WebGL(Threejs 库).如何将这个库连接到 React?
我有一些元素,例如
<div ref="threejs"></div>
如何使其成为 Threejs 库调用的字段?附:.我不想使用像 react-threejs 这样的扩展
解决方案
以下是如何设置的示例 (参见演示):
import React, { Component } from 'react'从三"导入 * 为三类场景扩展组件{构造函数(道具){超级(道具)this.start = this.start.bind(this)this.stop = this.stop.bind(this)this.animate = this.animate.bind(this)}componentDidMount() {const 宽度 = this.mount.clientWidthconst 高度 = this.mount.clientHeightconst 场景 = 新的 THREE.Scene()const camera = new THREE.PerspectiveCamera(75,宽度/高度,0.1,1000)const renderer = new THREE.WebGLRenderer({ antialias: true })const geometry = new THREE.BoxGeometry(1, 1, 1)const material = new THREE.MeshBasicMaterial({ color: '#433F81' })const cube = new THREE.Mesh(geometry, material)相机.位置.z = 4场景.添加(立方体)renderer.setClearColor('#000000')渲染器.setSize(宽度,高度)this.scene = 场景this.camera = 相机this.renderer = 渲染器this.material = 材料this.cube = 立方体this.mount.appendChild(this.renderer.domElement)this.start()}componentWillUnmount() {this.stop()this.mount.removeChild(this.renderer.domElement)}开始() {如果(!this.frameId){this.frameId = requestAnimationFrame(this.animate)}}停止() {取消动画帧(this.frameId)}动画(){this.cube.rotation.x += 0.01this.cube.rotation.y += 0.01this.renderScene()this.frameId = window.requestAnimationFrame(this.animate)}渲染场景(){this.renderer.render(this.scene, this.camera)}使成为() {返回 ({ this.mount = mount }}/>)}}导出默认场景I work with React and use a canvas. I want to change the canvas to WebGL (Threejs library). How to connect this library to React?
I have some element, e.g.
<div ref="threejs"></div>
How to make it a field for the Threejs library call?
P.S:. I don't want to use extensions like react-threejs
解决方案 Here is an example of how to set this up (see demo):
import React, { Component } from 'react'
import * as THREE from 'three'
class Scene extends Component {
constructor(props) {
super(props)
this.start = this.start.bind(this)
this.stop = this.stop.bind(this)
this.animate = this.animate.bind(this)
}
componentDidMount() {
const width = this.mount.clientWidth
const height = this.mount.clientHeight
const scene = new THREE.Scene()
const camera = new THREE.PerspectiveCamera(
75,
width / height,
0.1,
1000
)
const renderer = new THREE.WebGLRenderer({ antialias: true })
const geometry = new THREE.BoxGeometry(1, 1, 1)
const material = new THREE.MeshBasicMaterial({ color: '#433F81' })
const cube = new THREE.Mesh(geometry, material)
camera.position.z = 4
scene.add(cube)
renderer.setClearColor('#000000')
renderer.setSize(width, height)
this.scene = scene
this.camera = camera
this.renderer = renderer
this.material = material
this.cube = cube
this.mount.appendChild(this.renderer.domElement)
this.start()
}
componentWillUnmount() {
this.stop()
this.mount.removeChild(this.renderer.domElement)
}
start() {
if (!this.frameId) {
this.frameId = requestAnimationFrame(this.animate)
}
}
stop() {
cancelAnimationFrame(this.frameId)
}
animate() {
this.cube.rotation.x += 0.01
this.cube.rotation.y += 0.01
this.renderScene()
this.frameId = window.requestAnimationFrame(this.animate)
}
renderScene() {
this.renderer.render(this.scene, this.camera)
}
render() {
return (
<div
style={{ width: '400px', height: '400px' }}
ref={(mount) => { this.mount = mount }}
/>
)
}
}
export default Scene
You might also be interested in a full screen example (see GitHub).
Here's an example using React Hooks instead of a class.
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