arkit

问题 I was trying to integrate Apple's ARKit example app into my app. As ARKit is only an additional feature, so I need to support lower versions of iOS. I added @available(iOS 11.0, *) tag to all the ARKit example app classes...It almost works except this 1 error: "Overriding 'prepare' must be as available as declaration it overrides". Any idea how can I resolve this issue ? Xcode error image 回答1: What worked for me was adding the @available attribute above the method like so: @available(iOS 11.3

问题 I was trying to integrate Apple's ARKit example app into my app. As ARKit is only an additional feature, so I need to support lower versions of iOS. I added @available(iOS 11.0, *) tag to all the ARKit example app classes...It almost works except this 1 error: "Overriding 'prepare' must be as available as declaration it overrides". Any idea how can I resolve this issue ? Xcode error image 回答1: What worked for me was adding the @available attribute above the method like so: @available(iOS 11.3

问题 There are three ways about Detecting Intersections in RealityKit framework, but I don't know how to use it in my project. 1. func raycast(origin: SIMD3<Float>, direction: SIMD3<Float>, length: Float, query: CollisionCastQueryType, mask: CollisionGroup, relativeTo: Entity?) -> [CollisionCastHit] 2. func raycast(from: SIMD3<Float>, to: SIMD3<Float>, query: CollisionCastQueryType, mask: CollisionGroup, relativeTo: Entity?) -> [CollisionCastHit] 3. func convexCast(convexShape: ShapeResource,

问题 There are three ways about Detecting Intersections in RealityKit framework, but I don't know how to use it in my project. 1. func raycast(origin: SIMD3<Float>, direction: SIMD3<Float>, length: Float, query: CollisionCastQueryType, mask: CollisionGroup, relativeTo: Entity?) -> [CollisionCastHit] 2. func raycast(from: SIMD3<Float>, to: SIMD3<Float>, query: CollisionCastQueryType, mask: CollisionGroup, relativeTo: Entity?) -> [CollisionCastHit] 3. func convexCast(convexShape: ShapeResource,

问题 What is the best way to load a 3d model from a URL inside of iOS at runtime. I have tried this .scn and .gtlf models importer. I am using this framework https://github.com/prolificinteractive/SamMitiAR-iOS I load the model like this: let virtualObjectGLTFNode = SamMitiVirtualObject(gltfUrl: URL(string: "https://raw.githubusercontent.com/KhronosGroup/glTF-Sample- Models/master/2.0/Duck/glTF-Embedded/Duck.gltf")!, allowedAlignments: [.horizontal]) virtualObjectGLTFNode.name = "Duck"

问题 In my code, I detect the plane and show shadow for the object above the plane. If there is one plane, it works fine, but if it detects multiple planes, the redundant shadow will show. As the picture shows, on the plane #1, the shadow is right, but if I add another plane #2, the plane #2 has the wrong shadow, even if I remove the airplane, the shadow on plane #1 disappears, but the shadow on plane #2 is still there. I don't want to remove the plane #2, but how to remove the wrong shadow on

问题 Out of the box it's pretty clear ARKit doesn't allow for the tracking of more than 4 images at once. (You can "track" more markers than that but only 4 will function at a time). See this question for more details on that. However, I'm wondering if there is a possible work-around. Something like adding and removing anchors on a timer or getting the position information and then displaying the corresponding models without ARKit, etc. My knowledge of Swift is fairly limited so I haven't had much

问题 Out of the box it's pretty clear ARKit doesn't allow for the tracking of more than 4 images at once. (You can "track" more markers than that but only 4 will function at a time). See this question for more details on that. However, I'm wondering if there is a possible work-around. Something like adding and removing anchors on a timer or getting the position information and then displaying the corresponding models without ARKit, etc. My knowledge of Swift is fairly limited so I haven't had much

问题 I am looking to get latitude and longitude values from an IOS plugin.The plugin code is given below which is a .mm file. #import "iPhone_Sensors.h" #import <CoreLocation/CoreLocation.h> #import <CoreMotion/CoreMotion.h> #include "iPhone_View.h" #include "iPhone_OrientationSupport.h" static bool gCompensateSensors = true; bool gEnableGyroscope = false; bool IsCompensatingSensors() { return gCompensateSensors; } void SetCompensatingSensors(bool val) { gCompensateSensors = val;} void

问题 I use iPad to develop an AR app. I follow the wwdc code to add my first node on the sceneView. If the iPad is landscape, I can get the right result, but if the iPad is Portrait, it rotates 90 degrees. Anybody can help me, thanks? guard let frame = sceneView.session.currentFrame else { return } if let scnStr = noti.object as? String { // Create a new scene let scene = SCNScene(named: "art.scnassets/\(scnStr)")! let emojiNode = SCNNode() for node in scene.rootNode.childNodes { emojiNode