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Transform Controls

Video Lecture

Transform Controls Transform Controls Transform Controls

Description

Allows you to change the transforms of an object within the scene.

You attach the controls to the object, and then add the controls to the scene, so that the interaction handles are visible.

And then you can rescale, rotate and position the object within the scene.

Lesson Script

./src/client/client.ts

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import * as THREE from 'three'
import { TransformControls } from 'three/examples/jsm/controls/TransformControls'
import Stats from 'three/examples/jsm/libs/stats.module'

const scene = new THREE.Scene()
scene.add(new THREE.AxesHelper(5))

const camera = new THREE.PerspectiveCamera(
    75,
    window.innerWidth / window.innerHeight,
    0.1,
    1000
)
camera.position.z = 2

const renderer = new THREE.WebGLRenderer()
renderer.setSize(window.innerWidth, window.innerHeight)
document.body.appendChild(renderer.domElement)

const geometry = new THREE.BoxGeometry()
const material = new THREE.MeshNormalMaterial()

const cube = new THREE.Mesh(geometry, material)
scene.add(cube)

const controls = new TransformControls(camera, renderer.domElement)
controls.attach(cube)
scene.add(controls)

window.addEventListener('keydown', function (event) {
    switch (event.code) {
        case 'KeyG':
            controls.setMode('translate')
            break
        case 'KeyR':
            controls.setMode('rotate')
            break
        case 'KeyS':
            controls.setMode('scale')
            break
    }
})

window.addEventListener('resize', onWindowResize, false)
function onWindowResize() {
    camera.aspect = window.innerWidth / window.innerHeight
    camera.updateProjectionMatrix()
    renderer.setSize(window.innerWidth, window.innerHeight)
    render()
}

const stats = Stats()
document.body.appendChild(stats.dom)

function animate() {
    requestAnimationFrame(animate)

    // controls.update()

    render()

    stats.update()
}

function render() {
    renderer.render(scene, camera)
}

animate()

TransformControls (Official Documentation)

KeyboardEvent.code