Skip to content


 Zabbix
 Grafana
 Prometheus
 React Three Fiber
 Threejs and TypeScript
 SocketIO and TypeScript
 Blender Topological Earth
 Sweet Home 3D
 Design Patterns Python
 Design Patterns TypeScript
   
 Course Coupon Codes
Three.js and TypeScript
Kindle Edition
$6.99 $9.99 Paperback 
$22.99 $29.99




Design Patterns in TypeScript
Kindle Edition
$6.99 $9.99 Paperback
$11.99 $19.99
Design Patterns in Python
Kindle Edition
$6.99 $9.99 Paperback
$11.99 $19.99

Trackball Controls

Video Lecture

Trackball Controls Trackball Controls Trackball Controls

Description

TrackballControls is similar to OrbitControls. However, it does not maintain a constant camera up vector. That means that the camera can orbit past it's polar extremes. It won't flip to stay the right side up.

Lesson Script

./src/client/client.ts

 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
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
import * as THREE from 'three'
import { TrackballControls } from 'three/examples/jsm/controls/TrackballControls'
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 controls = new TrackballControls(camera, renderer.domElement)
// controls.addEventListener('change', () => console.log("Controls Change"))
// controls.addEventListener('start', () => console.log("Controls Start Event"))
// controls.addEventListener('end', () => console.log("Controls End Event"))
// controls.enabled = false
// controls.rotateSpeed = 1.0
// controls.zoomSpeed = 1.2
// controls.panSpeed = 0.8
// controls.keys = ['KeyA', 'KeyS', 'KeyD']
// controls.noPan = true //default false
// controls.noRotate = true //default false
// controls.noZoom = true //default false
// controls.staticMoving = true //default false
// controls.dynamicDampingFactor = 0.1
// controls.maxDistance = 4
// controls.minDistance = 2

const geometry = new THREE.BoxGeometry()
const material = new THREE.MeshBasicMaterial({
    color: 0x00ff00,
    wireframe: true,
})

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

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)

    // trackball controls needs to be updated in the animation loop before it will work
    controls.update()

    render()

    stats.update()
}

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

animate()

TrackballControls (Official Documentation)

KeyboardEvent.code

Retro Arcade Trackball Control

Expert Mouse Trackball Control