How to set the world alignment to gravity and heading for Roomplan?

Question

Created Jul ’24

Replies 1

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So in the WWDC23 video on the Roomplan enhancement, it says that it is now possible to set a custom ARSession for the RoomCaptureSession. But how do you actually set the config for the custom ARSession?

init() {
      let arConfig = ARWorldTrackingConfiguration()
      arConfig.worldAlignment = .gravityAndHeading
      arSession = ARSession()
      roomCaptureView = RoomCaptureView(frame: CGRect(x: 0, y: 0, width: 42, height: 42), arSession: arSession)
      sessionConfig = RoomCaptureSession.Configuration()
      roomCaptureView.captureSession.delegate = self
      roomCaptureView.delegate = self
  }

However, I keep getting an issue that self is being used in the property access before being initialised. What can I do to fix it?

Answered by Riptide314 in 796598022

Had to move some code around to get it to work. I think the main issue was declaring arSession as a class variable instead of within the initialiser.

class RoomCaptureController: RoomCaptureViewDelegate, RoomCaptureSessionDelegate, ObservableObject
{
    var roomCaptureView: RoomCaptureView
    var sessionConfig: RoomCaptureSession.Configuration
  
    init() {
        roomCaptureView = RoomCaptureView(frame: CGRect(x: 0, y: 0, width: 42, height: 42))//, arSession: arSession)
        sessionConfig = RoomCaptureSession.Configuration()
        let arConfig = ARWorldTrackingConfiguration()
        arConfig.worldAlignment = .gravityAndHeading
        roomCaptureView.captureSession.arSession.run(arConfig)
        roomCaptureView.captureSession.delegate = self
        roomCaptureView.delegate = self     
    }
}

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Answer 1

Riptide314 OP

Jul ’24

Accepted Answer

Had to move some code around to get it to work. I think the main issue was declaring arSession as a class variable instead of within the initialiser.

class RoomCaptureController: RoomCaptureViewDelegate, RoomCaptureSessionDelegate, ObservableObject
{
    var roomCaptureView: RoomCaptureView
    var sessionConfig: RoomCaptureSession.Configuration
  
    init() {
        roomCaptureView = RoomCaptureView(frame: CGRect(x: 0, y: 0, width: 42, height: 42))//, arSession: arSession)
        sessionConfig = RoomCaptureSession.Configuration()
        let arConfig = ARWorldTrackingConfiguration()
        arConfig.worldAlignment = .gravityAndHeading
        roomCaptureView.captureSession.arSession.run(arConfig)
        roomCaptureView.captureSession.delegate = self
        roomCaptureView.delegate = self     
    }
}

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