arkit

The iOS 12 application now allows us to create an ARReferenceObject , and using it, can reliably recognize a position and orientation of real-world object. We can also save the finished .arobject file. But : ARReferenceObject contains only the spatial features information needed for ARKit to recognize the real-world object, and is not a displayable 3D reconstruction of that object. sceneView.session.createReferenceObject(transform: simd_float4x4, center: simd_float3, extent: simd_float3) { (ARReferenceObject?, Error?) in // code } func export(to url: URL, previewImage: UIImage?) throws { } Is

I am trying to project an ARAnchor to the 2D space but I am facing on an orientation issue... Below my function to project the top left, top right, bottom left, bottom right corner position to 2D space: /// Returns the projection of an `ARImageAnchor` from the 3D world space /// detected by ARKit into the 2D space of a view rendering the scene. /// /// - Parameter from: An Anchor instance for projecting. /// - Returns: An optional `CGRect` corresponding on `ARImageAnchor` projection. internal func projection(from anchor: ARImageAnchor, alignment: ARPlaneAnchor.Alignment, debug: Bool = false) -

I'm experimenting with the vertical plane, and I'm trying to place a node on a wall with the correct rotation based on that vertical plane. here's the ARHitTestResult of the vertical plane that gets tapped: let hitLocation = sceneView.hitTest(touchPoint, types: .existingPlaneUsingExtent) I've tried the following: let hitRotation = hitLocation.first?.worldTransform.columns.2 and let anchor = hitLocation.first?.anchor let hitRotation = anchor?.transform.columns.2 neither one of them seem to work. And this is what I'm hoping to do: boardNode.eulerAngles = SCNVector3((hitRotation?.x)!,

How to draw a border to highlight a SCNNode and indicate to user that the node is selected? In my project user can place multiple virtual objects and user can select any object anytime. Upon selection i should show the user highlighted 3D object. Is there a way to directly achieve this or draw a border over SCNNode? You need to add a tap gesture recognizer to the sceneView . // add a tap gesture recognizer let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleTap(_:))) scnView.addGestureRecognizer(tapGesture) Then, handle the tap and highlight the node: @objc func

I've been reading plenty of StackOverflow answers on how to move an object by dragging it across the screen. Some use hit tests against .featurePoints some use the gesture translation or just keeping track of the lastPosition of the object. But honestly.. none work the way everyone is expecting it to work. Hit testing against .featurePoints just makes the object jump all around, because you dont always hit a featurepoint when dragging your finger. I dont understand why everyone keeps suggesting this. Solutions like this one work: Dragging SCNNode in ARKit Using SceneKit But the object doesnt