scenekit

The SCNView documentation says that setting allowsCameraControl to YES does not update the camera node position when the user changes the point of view. Is there any way to get the user-modified camera parameters when the user changes the point of view? When you enable allowsCameraControl , SceneKit inserts its own camera node into the scene (as an immediate child of the scene's root node), and sets that node as the view's pointOfView . Read the properties of that node to find out the camera's position and orientation, or the properties of the node's camera attribute to find the camera's field

How can I get the current velocity of a SCNPhyisicsBody? The velocity property does always return (0.0, 0.0, 0.0), and the physicsBody of the prensetationNode of my SCNNode is also nil. You can get the "current" velocity with physicsBody.velocity But this is valid only within the "game loop" callbacks (updateAtTime, didApplyAnimations, didSimulatePhysics, will/didRenderScene). ...in your view controller, you have to use SCNSceneRendererDelegate protocol like class GameViewController: UIViewController,SCNSceneRendererDelegate{... and in the viewDidLoad method set the SCNView delegate to scnView

extremely new to SceneKit, so just looking for help here: I have an SCNSphere with a camera at the center of it I create an SCNMaterial, doubleSided, and assign it to the sphere Since the camera is at the center, the image looks flipped vertically, which when having text inside totally messes things up. So how can i flip the material, or the image (although later it will be frames from a video), any other suggestion is welcome. This solution, btw, is failing on me, normalImage is applied as a material (but the image is flipped when looking from inside the sphere), but assigning flippedImage

i'm trying to use a SKVideoNode as a video texture source for a SCNSphere within my SCNView I'm following this answer: SKVideoNode (embedded in SKScene) as texture for for Scene Kit Node not working And with my code (pasted at the end of the question) I do get a video and an audio playing. Issue is, the mapping only occurs on a quarter of the sphere (the all xy-positive quarter). The cameraNode is inside (0,0,0) the sphere and independent of the sphereNode. I do apply a scale to the sphere node, just to reverse the nodes of the texture: sphereNode.scale = SCNVector3Make(-1, 1, 1) but

Since I've updated to iOS 10, I'm not able anymore to render a Sprite Kit scene to a Scene Node while using openGL for rendering. Things work fine with Metal. The error logs: "Failed to create IOSurface image (texture)" I used to be able to do something like: class ViewController: UIViewController { @IBOutlet weak var scnView: SCNView! override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. scnView.showsStatistics = true scnView.allowsCameraControl = true let scnScene = SCNScene() scnView.scene = scnScene print("scnView

I've been using 24bit .png with Alpha, from Photoshop, and just tried a .psd which worked fine with OpenGL ES, but Metal didn't see the Alpha channel. What's the absolutely most performant texture format for particles within SceneKit? Here's a sheet to test on, if needs be. It looks white... right click and save as in the blank space. It's an alpha heavy set of rings. You can probably barely make them out if you squint at the screen: exaggerated example use case: https://www.dropbox.com/s/vu4dvfl0aj3f50o/circless.mov?dl=0 // Additional points for anyone can guess the difference between the