scenekit

问题 I'm trying to understand how to use camera with usesOrthographicProjection = true . I need to set it up so when we first see the scene, the object should be viewable in full. I used the Xcode's SceneKit template, adjust a little bit about the camera (all the code is in viewDidLoad ). Using default camera (perspective projection), it looks like this: cameraNode.position = SCNVector3(x: 0, y: 0, z: ship.boundingBox.max.z + 20) Next, I tried to set the orthographic projection, now it looks like

问题 My goal is to calculate the "visible" part of vertical plane that is anchored to some ARPlaneAnchor and represent it with quadrangle as shown in the picture below: My current approach is based on few hit tests, which unfortunately seems to not giving me the satisfying results. First, when I detect a ARPlaneAnchor I add a big invisible SCNNode to its main node. func renderer(_ renderer: SCNSceneRenderer, didUpdate node: SCNNode, for anchor: ARAnchor) { guard let planeAnchor = anchor as?

问题 Please forgive me if this question is not that great. I've hit a bit of a road block on Apple's documentation of ARGeoAnchor. Currently ARGeoAnchor just shows a blue dot in the AR Scene View. I'm trying to show any 3d rendereing or object instead. My code: let coordinate = CLLocationCoordinate2D(latitude: lat, longitude: lng) let geoAnchor = ARGeoAnchor(name: "Point 1", coordinate: coordinate) let boxGeometry = SCNBox(width: 0.1, height: 0.1, length: 0.1, chamferRadius: 0) let cube = SCNNode

问题 I am quite confused by the "rotation" and "orientation" for a SCNNode. In Apple's doc, they are defined quite similarly: orientation: The node’s orientation, expressed as a quaternion. Animatable. rotation: The node’s orientation, expressed as a rotation angle about an axis. Animatable. And apple doc says: The rotation, eulerAngles, and orientation properties all affect the rotational aspect of the node’s transform property. Any change to one of these properties is reflected in the others. So

来源： https://stackoverflow.com/questions/60401740/issue-with-adding-node-to-scene-view

来源： https://stackoverflow.com/questions/60401740/issue-with-adding-node-to-scene-view

来源： https://stackoverflow.com/questions/63910293/calling-consecutive-animations-in-swift-with-completion-handler

来源： https://stackoverflow.com/questions/63910293/calling-consecutive-animations-in-swift-with-completion-handler

来源： https://stackoverflow.com/questions/59670506/explanation-why-empty-scenekit-scene-without-ship-has-one-node-and-2-73k-polygon

来源： https://stackoverflow.com/questions/60073349/in-which-cases-arscnview-raycastquery-returns-nil