three-orbit-viewer

three-orbit-viewer

Quick harness to create a runnable demo for ThreeJS scenes.

var createOrbitViewer = require('three-orbit-viewer')(THREE)

var app = createOrbitViewer({
    clearColor: 0x000000,
    clearAlpha: 1.0,
    fov: 65,
    position: new THREE.Vector3(1, 1, -2)
})

var geo = new THREE.BoxGeometry(1,1,1)
var mat = new THREE.MeshBasicMaterial({ wireframe: true, color: 0xffffff })
var box = new THREE.Mesh(geo, mat)
app.scene.add(box)

app.on('tick', function(dt) {
    //.. handle pre-render updates    
})

app.on('ready', function() {
    //.. handle DOM ready 
})

Usage

viewer = createViewer(THREE)([options])

This module exports a function which accepts the THREE instance, and returns a new function which creates the orbit viewer with the specified options.

• fov field of view, defaults to 50
• clearColor the THREE.Color or hex code, default black
• clearAlpha the alpha, default 0
• position THREE.Vector3 for the initial camera position, defaults to [1, 1, -2]
• target THREE.Vector3 for the initial orbit controller's target
• other options that could be passed into canvas-app

viewer.on('tick')

Listens for tick events, dispatched with dt as the first and only parameter.

viewer.on('resize')

Listens for resize events, dispatched with width, height as parameters. Camera aspect, renderer viewport, and canvas retina scaling is already taken into account.

viewer.renderer

Instance of THREE.WebGLRenderer

viewer.scene

Instance of THREE.Scene

viewer.camera

Instance of THREE.PerspectiveCamera

viewer.controller

Instance of three-orbit-controller.

viewer.engine

Instance of canvas-app which you can call stop() and start() on, or access for current width/height/fps/etc.

Versioning

This uses an unusual versioning system to better support ThreeJS's (lack of) versioning. The major version of this repo will line up with ThreeJS releases (69.0.0 => r69). The minor will be reserved for any new features, and patch for bug fixes and documentation/readme updates. In some rare cases, a minor feature may introduce a breaking change; so it's generally safest to use tilde or save-exact for this module.

License

MIT, see LICENSE.md for details.