“column”

the following documentation tells me that the CameraFrame.Sample.Parameters.extrinsics is of type simd_float4x4, great! https://developer.apple.com/documentation/arkit/cameraframe/sample/parameters/4443449-extrinsics I have read in the answer of another post that this extrinsics represents the pose of the physical camera relative to the device anchor. Did I understand correctly that the device anchor is where the scene is rendered from onto the user's display? What is the coordinate system in which this offset is defined, which axis is left, which one is up, which one is forward? The last column of the extrinsics seems to define a translation of approximately 2 cm along the x axis, -2cm along the y axis and -5 cm along the z axis. I tried to measure the physical distance between the main left and right cameras in order to find out if it's rather 2cm or 5 cm from the middle, it looks more like 5, so I assume that the z axis is looking towards the right (from the user's perspective). Is that so? For x

I've developed a new Quicklook data-based preview extension for a custom file type that generates an image preview of the file. I previously used a Quick Look generator plug-in but support for it was deprecated and now removed in macOS Sequoia. My app opens files using a open(url.path, O_RDWR | O_NONBLOCK | O_EXLOCK) call. The locking flags are used to prevent other clients from writing the file if it's already open. I discovered that when Finder is showing the “large” file previews (such as when in column or gallery modes) from a SMB share, the open call fails with EWOULDBLOCK as if the file is locked. It does work just fine on local files. Opening with O_SHLOCK also has the issue. Surprisingly it does work just fine for previews that return Plain Text data instead of Image data. Using the lsof command, it seems like the Quicklook process has some kind of lock on the file. This is the output of the lsof command: COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE QuickLook 48487 XXXX txt REG 1,15 12500061

I am using Xcode 15.1, I used to be able to set the amount of columns for the stickers which is between 2 and 3, right now it is always showing 3 and it makes everything look small. Is there a way to set it to 2 columns? my stickers width and hight is 618x618px. Thanks Yenty

My project loads a CSV into a DataFrame and displays it in a Table (a MacOS app). So far so good ... but when trying to update a value in a column, I dont see anyway to update this value. The table gets the value for the column like this: func getColumnValue(row :DataFrame.Rows.Element, columnName :String) -> String { if row.base.containsColumn(columnName) { var value = if row[columnName] != nil { value = (row[columnName]!) } return value } ... But the documentation and googles dont show any way to update the same column. Any help is appreciated with cookies. Attempt to update: func setColumnValue(row :DataFrame.Rows.Element, columnName :String, value :String) { var column: [String?] = data[columnName] column[row.id] = value ... }

Hi I just released an app which is live. i have a strange issue: while the audio files in the app play fine on my device, but some users are unable to hear. One friend said it played yesterday but not today. Any idea why? The files are mp3, I see them in Build Phase, and in the project obviously. Here's the audio view code, thank you! import AVFoundation struct MeditationView: View { @State private var player: AVAudioPlayer? @State private var isPlaying = false @State private var selectedMeditation: String? var isiPad = UIDevice.current.userInterfaceIdiom == .pad let columns = [GridItem(.flexible()),GridItem(.flexible())] let tracks = [Intro:intro.mp3, Peace : mysoundbath1.mp3, Serenity : mysoundbath2.mp3, Relax : mysoundbath3.mp3] var body: some View { VStack{ VStack{ VStack{ Image(dhvani).resizable().aspectRatio(contentMode: .fit) .frame(width: 120) Text(Enter the world of Dhvani soundbath sessions, click lotus icon to play.) .font(.custom(Times New Roman, size: 20)) .lineLimit(nil) .multilineTextA

Hello reader, I am facing an issue that I am not able to resolve. I have been able to create a demo project that demonstrates the issue, which I hope enables you to have a look as well and hopefully find a way to resolve it. What is the issue: I am using SKTileMapNode in order to draw tile maps. Instead of using the tilesets as you can use from within the Xcode editor, I prefer to do it all programmatically using tilesheets (for a plethora of reasons that I will leave out of this equation). This is the code of the gameScene: import SpriteKit import GameplayKit class GameScene: SKScene { private let tileSize = CGSize(width: 32, height: 32) override func didMove(to view: SKView) { super.didMove(to: view) let tileSet = createTileSet() let tileMap = SKTileMapNode(tileSet: tileSet, columns: 100, rows: 100, tileSize: tileSize) for column in 0.. SKTileSet { let tileSheetTexture = SKTexture(imageNamed: terrain) var tileGroups = [SKTileGroup]() let relativeTileSize = CGSize(width: tileSize.width/tile

Hi everyone, I was exploring the Display Distinct Layouts Per Section section of the Apple documentation and noticed a potential issue in the example code provided. Specifically, in the createLayout method of the TwoColumnViewController in the sample project, the item size appears to be incorrectly described. The documentation states that the item size is ignored because the items are organized in columns, but in practice, the size is considered. When running the sample project without any modifications, the layout doesn't behave as described or expected. Here’s what I observed: The items are not displayed as intended in a two-column layout. Modifying the item size explicitly affects the layout, contrary to the documentation's claim that the size is ignored. This seems to be a mismatch between the documentation and the actual implementation. Could this be clarified or corrected? Has anyone else encountered this issue? If so, are there any recommended adjustments to the sample code to achieve

Hello. There seems to be a bug specifically in the iOS 18.2 (both Beta 1 and 2) and not seen in the previous versions. The bug is: when LazyVGrid is nested inside NavigationStack and some elements of the LazyVGrid have animations, navigating into any nested view and then going back to the initial view with the LazyVGrid causes all animations to stop working. Here is the example code inline: struct ContentView: View { @State private var count: Int = 0 var body: some View { NavigationStack { LazyVGrid( columns: Array( repeating: GridItem(spacing: 0), count: 1 ), alignment: .center, spacing: 0 ) { VStack { Text(String(count)) .font(.system(size: 100, weight: .black)) .contentTransition(.numericText()) .animation(.bouncy(duration: 1), value: count) Button(Increment) { count += 1 } NavigationLink(destination: { Text(Test) }, label: { Text(Navigate) }) } } } .padding() } } Once you run the application on iOS 18.2 Beta (I've tried on a real device only), the steps to reproduce are: Tap on the Increment butt