elper(subMarkerControls)
		subMarkerControls.object3d.add( markerHelper.object3d )
		markerHelpers.push(markerHelper)
	})


	// build a smoothedControls
	var smoothedRoot = new THREE.Group()
	scene.add(smoothedRoot)
	var smoothedControls = new THREEx.ArSmoothedControls(smoothedRoot)
	onRenderFcts.push(function(delta){
		// parameters for updateSmoothedControls
		var lerpsValues = [
			[0.1, 0.1, 0.5],
			[0.2, 0.1, 0.5],
			[0.2, 0.2, 0.5],
			[0.3, 0.2, 0.5],
			[0.3, 0.2, 0.5],
		]
		// update smoothedCon