making the arkit camera vertical rather than horizontal

Question

I am trying to make an app where the user enters some text in a textfield and then the app displays this text in front of the ar camera to the user. I positioned the text co

Answer 1

You cannot use the matrix identity for any orientation, it has to be rotated depending on device orientation. I have a function in my apps that I call to update that before I perform the matrix multiplication :

var translation = matrix_identity_float4x4

func updateTranslationMatrix() {

    switch UIDevice.current.orientation{
    case .portrait, .portraitUpsideDown, .unknown, .faceDown, .faceUp:
        print("portrait ")
        translation.columns.0.x = -cos(.pi/2)
        translation.columns.0.y = sin(.pi/2)
        translation.columns.1.x = -sin(.pi/2)
        translation.columns.1.y = -cos(.pi/2)
    case .landscapeLeft :
        print("landscape left")
        translation.columns.0.x = 1
        translation.columns.0.y = 0
        translation.columns.1.x = 0
        translation.columns.1.y = 1
    case .landscapeRight :
        print("landscape right")
        translation.columns.0.x = cos(.pi)
        translation.columns.0.y = -sin(.pi)
        translation.columns.1.x = sin(.pi)
        translation.columns.1.y = cos(.pi)
    }
    translation.columns.3.z = -0.6 //60cm in front of the camera
}