scnnode

I am trying to create a quote generator with simple text within a speech bubble in ARKit. I can show the speech bubble with text, but the text always starts in the middle and overflows outside of the speech bubble. Any help getting it align in the top left of the speech bubble and wrapping within the speech bubble would be appreciated. Result Classes class SpeechBubbleNode: SCNNode { private let textNode = TextNode() var string: String? { didSet { textNode.string = string } } override init() { super.init() // Speech Bubble let plane = SCNPlane(width: 200.0, height: 100.0) plane.cornerRadius =

I'm using SceneKit with ARKit, and right now have a simple app where I tap on the screen and it adds an ARAnchor and a SCNNode to my scene. At some point, I'm going to want to move the entire scene, so I tried changing sceneView.scene.rootNode.position.x += 10 to test this out. If I call this on any particular node, that node does move appropriately. But calling this on rootNode , nothing happens, where I'd expect every child node (which is every node in the scene) to move along with it. Why are my other nodes not moving appropriately, and is there something I can do to fix this? Or am I

I am using ARKit for my application and I try to dynamically load .scn files from my web-server(URL) Here is a part of my code let urlString = "https://da5645f1.ngrok.io/mug.scn" let url = URL.init(string: urlString) let request = URLRequest(url: url!) let session = URLSession.shared let downloadTask = session.downloadTask(with: request, completionHandler: { (location:URL?, response:URLResponse?, error:Error?) -> Void in print("location:\(String(describing: location))") let locationPath = location!.path let documents:String = NSHomeDirectory() + "/Documents/mug.scn" ls = NSHomeDirectory() + "

I have some code that rotates several SCNNodes around the x axis when the screen is tapped like so: func handleTap(gestureRecognize: UIGestureRecognizer) { let sceneView = self.view as SCNView let slice = self.cubes[0...8] let container = SCNNode() for node: SCNNode in slice { container.addChildNode(node) } sceneView.scene!.rootNode.addChildNode(container) container.runAction(SCNAction.rotateByX(CGFloat(M_PI / 2), y: 0.0, z: 0.0, duration: 1), completionHandler: { () -> Void in println("complete") }) } The issue that I'm running into is that every time this function is called, the nodes seem

I'm trying to rotate a node by SCNAction , but it rotates relative to parent’s coordinate space. Is it possible to rotate a node relative local's coordinate system? Sure. You can obtain parent's space coordinates for rotation axis with convertVector method. For example, this action will do 180 degrees rotation around local x-axis: SCNAction.rotate(by: .pi, around: node.convertVector(SCNVector3(1, 0, 0), to: node.parent), duration: TimeInterval(5)) Have you tried: [node runAction:[SCNAction rotateByX:0 y:1 z:0 duration:5.0]]; //Rotates the node along the y axis for 5 seconds. 来源： https:/

I am building an app that uses Scenekit to display a scene based on information returned from a data base. I have created a custom class with a class func that creates a SCNNode containing everything that needs to be drawn and returns it to my SCNView. Before calling this function I remove any existing nodes. Everything works great until I need to call it a second time. After removing the old SCNNode The memory is not deallocated before creating the new one. Is there a standard way of removing and replacing an SCNNode without overloading memory? I'm new to iOS dev and have never really done

I should see 2 yellow triangles, but I see nothing. class Terrain { private class func createGeometry () -> SCNGeometry { let sources = [ SCNGeometrySource(vertices:[ SCNVector3(x: -1.0, y: -1.0, z: 0.0), SCNVector3(x: -1.0, y: 1.0, z: 0.0), SCNVector3(x: 1.0, y: 1.0, z: 0.0), SCNVector3(x: 1.0, y: -1.0, z: 0.0)], count:4), SCNGeometrySource(normals:[ SCNVector3(x: 0.0, y: 0.0, z: -1.0), SCNVector3(x: 0.0, y: 0.0, z: -1.0), SCNVector3(x: 0.0, y: 0.0, z: -1.0), SCNVector3(x: 0.0, y: 0.0, z: -1.0)], count:4) ] let elements = [ SCNGeometryElement(indices: [0, 2, 3, 0, 1, 2], primitiveType: