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var PortableARjs = function(canvasEl, options){
// handle default options
options = options || {}
options.debugUI = options.debugUI !== undefined ? options.debugUI : false
options.renderThreejs = options.renderThreejs !== undefined ? options.renderThreejs : false
this.options = options
//////////////////////////////////////////////////////////////////////////////
// create arjsProfile
//////////////////////////////////////////////////////////////////////////////
var trackingMethod = 'area-artoolkit'
var arjsProfile = new ARjs.Profile()
.sourceWebcam()
.trackingMethod(trackingMethod)
.changeMatrixMode('cameraTransformMatrix')
.defaultMarker()
.checkIfValid()
//////////////////////////////////////////////////////////////////////////////
// init three.js scene/camera
//////////////////////////////////////////////////////////////////////////////
// init scene and camera
var threejsScene= new THREE.Scene()
var threejsCamera = ARjs.Utils.createDefaultCamera(trackingMethod)
threejsScene.add(threejsCamera)
//////////////////////////////////////////////////////////////////////////////
// init three.js renderer - never rendered except if options.renderThreejs === true
//////////////////////////////////////////////////////////////////////////////
// init threejsRenderer
// NOTE: can i avoid to have a renderer ?
var threejsRenderer = new THREE.WebGLRenderer({
antialias: true,
alpha: true
})
threejsRenderer.setClearColor(new THREE.Color('lightgrey'), 0)
threejsRenderer.setSize( 640, 480 )
threejsRenderer.domElement.style.position = 'absolute'
threejsRenderer.domElement.style.top = '0px'
threejsRenderer.domElement.style.left = '0px'
//////////////////////////////////////////////////////////////////////////////
// build ARjs.Session
//////////////////////////////////////////////////////////////////////////////
var arjsSession = new ARjs.Session({
scene: threejsScene,
renderer: threejsRenderer,
camera: threejsCamera,
sourceParameters: arjsProfile.sourceParameters,
contextParameters: arjsProfile.contextParameters
})
////////////////////////////////////////////////////////////////////////////////
// Create a ARjs.Anchor
////////////////////////////////////////////////////////////////////////////////
var arjsAnchor = new ARjs.Anchor(arjsSession, arjsProfile.defaultMarkerParameters)
this.cameraProjectionMatrix = []
this.cameraTransformMatrix = []
//////////////////////////////////////////////////////////////////////////////
// update function
//////////////////////////////////////////////////////////////////////////////
this.update = function(){
// update arjsSession
arjsSession.update()
// update the arjsAnchor
arjsAnchor.update()
// resize babylon canvas
arjsSession.arSource.copyElementSizeTo(canvasEl)
// copy camera projectionMatrix and transformMatrix
this.cameraProjectionMatrix = threejsCamera.projectionMatrix.toArray()
this.cameraTransformMatrix = threejsCamera.matrix.toArray()
}
//////////////////////////////////////////////////////////////////////////////
// add options
//////////////////////////////////////////////////////////////////////////////
// add debugUI
if( this.options.debugUI === true ){
this._initOptionsDebugUI(arjsSession, arjsAnchor)
}
// add three.js debug
if( this.options.renderThreejs === true ){
this._initOptionRenderThreejs(treejsRenderer, threejsScene, threejsCamera, arjsAnchor)
}
}
//////////////////////////////////////////////////////////////////////////////
// Code Separator
//////////////////////////////////////////////////////////////////////////////
PortableARjs.prototype._initOptionsDebugUI = function(arjsSession, arjsAnchor){
// create arjsDebugUIContainer if needed
if( document.querySelector('#arjsDebugUIContainer') === null ){
var domElement = document.createElement('div')
domElement.id = 'arjsDebugUIContainer'
domElement.setAttribute('style', 'position: fixed; bottom: 10px; width:100%; text-align: center; z-index: 1;color: grey;')
document.body.appendChild(domElement)
}
var sessionDebugUI = new ARjs.SessionDebugUI(arjsSession)
document.querySelector('#arjsDebugUIContainer').appendChild(sessionDebugUI.domElement)
var anchorDebugUI = new ARjs.AnchorDebugUI(arjsAnchor)
document.querySelector('#arjsDebugUIContainer').appendChild(anchorDebugUI.domElement)
}
//////////////////////////////////////////////////////////////////////////////
// Code Separator
//////////////////////////////////////////////////////////////////////////////
// function initRenderThreejs
PortableARjs.prototype._initOptionRenderThreejs = function(renderer, scene, camera, arjsAnchor){
// array of functions for the rendering loop
var onRenderFcts= [];
var arWorldRoot = arjsAnchor.object3d
//////////////////////////////////////////////////////////////////////////////////
// add an object in the scene
//////////////////////////////////////////////////////////////////////////////////
// add a torus knot
var geometry = new THREE.CubeGeometry(1,1,1)
var material = new THREE.MeshNormalMaterial({
transparent : true,
opacity: 0.5,
side: THREE.DoubleSide
})
var mesh = new THREE.Mesh( geometry, material )
mesh.position.y = geometry.parameters.height/2
arWorldRoot.add( mesh )
var geometry = new THREE.TorusKnotGeometry(0.3,0.1,64,16)
var material = new THREE.MeshNormalMaterial()
var mesh = new THREE.Mesh( geometry, material )
mesh.position.y = 0.5
arWorldRoot.add( mesh )
onRenderFcts.push(function(delta){
mesh.rotation.x += Math.PI*delta
})
//////////////////////////////////////////////////////////////////////////////////
// render the whole thing on the page
//////////////////////////////////////////////////////////////////////////////////
if( true ){
document.body.appendChild( renderer.domElement )
onRenderFcts.push(function(){
renderer.render( scene, camera )
})
}
// run the rendering loop
var lastTimeMsec= null
requestAnimationFrame(function animate(nowMsec){
// keep looping
requestAnimationFrame( animate )
// measure time
lastTimeMsec = lastTimeMsec || nowMsec-1000/60
var deltaMsec = Math.min(200, nowMsec - lastTimeMsec)
lastTimeMsec = nowMsec
// call each update function
onRenderFcts.forEach(function(onRenderFct){
onRenderFct(deltaMsec/1000, nowMsec/1000)
})
})
}