scenekit

问题 ARKit 2.0 updates many intrinsic (and extrinsic) parameters of the ARCamera from frame to frame. I'd like to know if it also takes Radial Lens Distortion into consideration (like in AVCameraCalibrationData class that ARKit doesn't use), and fix the video frames' distortion appropriately ( distort / undistort operations) for back iPhone and iPad cameras? var intrinsics: simd_float3x3 { get } As we all know, the Radial Lens Distortion greatly affects the 6 DOF pose estimation accuracy when we

问题 I'm looking for just a working Metal shader that works in SceneKit with SCNProgram. Can someone show me the correct method declarations/how to hook this up? let program = SCNProgram() program.vertexFunctionName = "myVertex" program.fragmentFunctionName = "myFragment" material.program = program and then the shader //MyShader.metal vertex something myVertex(something) { return something; } fragment float4 myFragment(something) { return something } I'm just looking for the most basic example

问题 I'm looking for just a working Metal shader that works in SceneKit with SCNProgram. Can someone show me the correct method declarations/how to hook this up? let program = SCNProgram() program.vertexFunctionName = "myVertex" program.fragmentFunctionName = "myFragment" material.program = program and then the shader //MyShader.metal vertex something myVertex(something) { return something; } fragment float4 myFragment(something) { return something } I'm just looking for the most basic example

问题 This is the function that I use to display object on the plane surface. private func loadScene(path: String) -> SCNNode { let spotLight = SCNLight() spotLight.type = SCNLight.LightType.probe spotLight.spotInnerAngle = 30.0 spotLight.spotOuterAngle = 80.0 spotLight.castsShadow = true let result = SCNNode() result.light = spotLight result.position = SCNVector3(-10.0, 20.0, 10.5) result.addChildNode(result) let scene = SCNScene(named: path)! for node in scene.rootNode.childNodes { result

问题 The goal is to recreate the lighting for this OBJ file: https://poly.google.com/view/cKryD9VnDEZ Code to load OBJ file into SceneKit (can download file from above link): let modelPath = "model.obj" let url = NSURL(string: modelPath) let scene = SCNScene(named: modelPath)! sceneView.autoenablesDefaultLighting = true sceneView.allowsCameraControl = true sceneView.scene = scene sceneView.backgroundColor = UIColor.white Options tried so far: 1) The default ambient lighting is much harsher than

问题 I've searched and there doesn't appear to be a way to make a dark SceneKit scene... As in a scene with low lighting. I've removed all lights from my scene, set my autoenablesDefaultLighting to false, made sure it's unchecked in the storyboard, I even tried adding a black ambient light but that didn't do anything. Is there a way to make a SceneKit Scene with low/dark lighting?? 回答1: Had to try this for myself, as it didn't sound right. Removing all lights from the default SceneKit game

问题 I've searched and there doesn't appear to be a way to make a dark SceneKit scene... As in a scene with low lighting. I've removed all lights from my scene, set my autoenablesDefaultLighting to false, made sure it's unchecked in the storyboard, I even tried adding a black ambient light but that didn't do anything. Is there a way to make a SceneKit Scene with low/dark lighting?? 回答1: Had to try this for myself, as it didn't sound right. Removing all lights from the default SceneKit game

问题 I have a SCNScene rendering in a SCNView. I have some *.dae models that are rendered/moving in the scene. I have a transparent cube, when one of my models goes behind it, I would like the model to not be rendered, because at the moment, as the cube is transparent, you can see it through the cube. Is there any property/setting/shader I can apply to the transparent cube so that anything behind it is not rendered? Example: My eye is the green dot, the cube is the blue square, my model is the red

问题 I succeeded to pause a scene game with this code: override func touchesBegan(touches: NSSet!, withEvent event: UIEvent!) { var touch:UITouch = touches.anyObject() as UITouch pauseText.text = "Continuer" pauseText.fontSize = 50 pauseText.position = CGPointMake(self.frame.size.width/2, self.frame.size.height/2) /* bouton play/pause */ var locationPause: CGPoint = touch.locationInNode(self) if self.nodeAtPoint(locationPause) == self.pause { println("pause") addChild(pauseText) pause

问题 I succeeded to pause a scene game with this code: override func touchesBegan(touches: NSSet!, withEvent event: UIEvent!) { var touch:UITouch = touches.anyObject() as UITouch pauseText.text = "Continuer" pauseText.fontSize = 50 pauseText.position = CGPointMake(self.frame.size.width/2, self.frame.size.height/2) /* bouton play/pause */ var locationPause: CGPoint = touch.locationInNode(self) if self.nodeAtPoint(locationPause) == self.pause { println("pause") addChild(pauseText) pause