TransformControls with GLTF Animations

Here is an example of an animated GLTF being manipulated with transform controls.

In this example, you can transform the animated models position, rotation and size.

Scripts

./src/server/server.ts

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import express from "express"
import path from "path"
import http from "http"

const port: number = 3000

class App {
    private server: http.Server
    private port: number

    constructor(port: number) {
        this.port = port
        const app = express()
        app.use(express.static(path.join(__dirname, '../client')))
        app.use('/build/three.module.js', express.static(path.join(__dirname, '../../node_modules/three/build/three.module.js')))
        app.use('/jsm/controls/OrbitControls', express.static(path.join(__dirname, '../../node_modules/three/examples/jsm/controls/OrbitControls.js')))
        app.use('/jsm/loaders/GLTFLoader', express.static(path.join(__dirname, '../../node_modules/three/examples/jsm/loaders/GLTFLoader.js')))
        app.use('/jsm/libs/stats.module', express.static(path.join(__dirname, '../../node_modules/three/examples/jsm/libs/stats.module.js')))
        app.use('/jsm/controls/TransformControls', express.static(path.join(__dirname, '../../node_modules/three/examples/jsm/controls/TransformControls.js')))

        this.server = new http.Server(app);
    }

    public Start() {
        this.server.listen(this.port, () => {
            console.log( `Server listening on port ${this.port}.` )
        })
    }
}

new App(port).Start()

./src/client/client.ts

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import * as THREE from '/build/three.module.js'
import { OrbitControls } from '/jsm/controls/OrbitControls'
import { GLTFLoader } from '/jsm/loaders/GLTFLoader'
import Stats from '/jsm/libs/stats.module'
import { TransformControls } from '/jsm/controls/TransformControls'

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

var light1 = new THREE.PointLight()
light1.position.set(2.5, 2.5, 2.5)
light1.castShadow = true
scene.add(light1)

var light2 = new THREE.PointLight()
light2.position.set(-2.5, 2.5, 2.5)
light2.castShadow = true
scene.add(light2)

const camera: THREE.PerspectiveCamera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.01, 100)
camera.position.set(0.8, 1.4, 1.0)

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

const orbitControls = new OrbitControls(camera, renderer.domElement)
orbitControls.screenSpacePanning = true
orbitControls.target.set(0, 1, 0)

const transformControls = new TransformControls(camera, renderer.domElement)
scene.add(transformControls);
transformControls.addEventListener("mouseDown", function (event) {
    orbitControls.enabled = false
});
transformControls.addEventListener("mouseUp", function (event) {
    orbitControls.enabled = true
});

window.addEventListener('keydown', function (event: KeyboardEvent) {
    switch (event.key) {
        case "g":
            transformControls.setMode("translate")
            break
        case "r":
            transformControls.setMode("rotate")
            break
        case "s":
            transformControls.setMode("scale")
            break
    }
})

const planeGeometry = new THREE.PlaneGeometry(25, 25)
const texture = new THREE.TextureLoader().load("img/grid.png")
const plane = new THREE.Mesh(planeGeometry, new THREE.MeshPhongMaterial({ map: texture }))
plane.rotateX(-Math.PI / 2)
plane.receiveShadow = true
scene.add(plane)

let mixer: THREE.AnimationMixer
let modelReady = false
const gltfLoader = new GLTFLoader()

gltfLoader.load(
    'models/eve@punching.glb',
    (gltf) => {
        gltf.scene.traverse(function (child) {
            if ((<THREE.Mesh>child).isMesh) {
                child.castShadow = true
                child.frustumCulled = false;
                (child as THREE.Mesh).geometry.computeVertexNormals()
            }
        });

        mixer = new THREE.AnimationMixer(gltf.scene);
        mixer.clipAction((gltf as any).animations[0]).play()

        transformControls.attach(gltf.scene);

        scene.add(gltf.scene)

        modelReady = true
    },
    (xhr) => {
        console.log((xhr.loaded / xhr.total * 100) + '% loaded')
    },
    (error) => {
        console.log(error);
    }
)

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)

const clock: THREE.Clock = new THREE.Clock()

var animate = function () {
    requestAnimationFrame(animate)

    orbitControls.update()

    if (modelReady) {
        mixer.update(clock.getDelta());
    }

    render()

    stats.update()
};

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