Post not yet marked as solved
Im trying to use a RealityView with attachments and this error is being thowen. Am i using the RealityView wrong? I've seen other people use a RealityView with Attachments in visionOS... Please let this be a bug...
RealityView { content, attachments in
contentEntity = ModelEntity(mesh: .generatePlane(width: 0.3, height: 0.5))
content.add(contentEntity!)
} attachments: {
Text("Hello!")
}.task {
await loadImage()
await runSession()
await processImageTrackingUpdates()
}
Post not yet marked as solved
Hi all, I need some help debugging some code I wrote. Just as a preface, I'm an extremely new VR/AR developer and also very new to using ARKit + RealityKit. So please bear with me :) I'm just trying to make a simple program that will track an image and place an entity on it. The image is tracked correctly, but the moment the program recognizes the image and tries to place an entity on it, the program crashes. Here’s my code:
VIEWMODEL CODE:
Observable class ImageTrackingModel {
var session = ARKitSession() // ARSession used to manage AR content
var imageAnchors = [UUID: Bool]() // Tracks whether specific anchors have been processed
var entityMap = [UUID: ModelEntity]() // Maps anchors to their corresponding ModelEntity
var rootEntity = Entity() // Root entity to which all other entities are added
let imageInfo = ImageTrackingProvider(
referenceImages: ReferenceImage.loadReferenceImages(inGroupNamed: "referancePaper")
)
init() {
setupImageTracking()
}
func setupImageTracking() {
if ImageTrackingProvider.isSupported {
Task {
try await session.run([imageInfo])
for await update in imageInfo.anchorUpdates {
updateImage(update.anchor)
}
}
}
}
func updateImage(_ anchor: ImageAnchor) {
let entity = ModelEntity(mesh: .generateSphere(radius: 0.05)) // THIS IS WHERE THE CODE CRASHES
if imageAnchors[anchor.id] == nil {
rootEntity.addChild(entity)
imageAnchors[anchor.id] = true
print("Added new entity for anchor \(anchor.id)")
}
if anchor.isTracked {
entity.transform = Transform(matrix: anchor.originFromAnchorTransform)
print("Updated transform for anchor \(anchor.id)")
}
}
}
APP:
@main
struct MyApp: App {
@State var session = ARKitSession()
@State var immersionState: ImmersionStyle = .mixed
private var viewModel = ImageTrackingModel()
var body: some Scene {
WindowGroup {
ModeSelectView()
}
ImmersiveSpace(id: "appSpace") {
ModeSelectView()
}
.immersionStyle(selection: $immersionState, in: .mixed)
}
}
Content View:
RealityView { content in
Task {
viewModel.setupImageTracking()
}
} //Im serioulsy so clueless on how to use this view