I would like to allow users to drag & drop 3d model files such as glTF or FBX to import 3d models inside MacOS-X desktop App that I'm working on.

Problem is that these files reference texture files that are located separately from the main file. with App Sandbox, my understanding is that it is not possible to access these associated files unless all of them are drag & dropped. is there any way to access and read these associated files just by drag&drop the main file such as .gltf?

example

for example, glTF has directory structure like below and I need access to .gltf as well as textures folder.

I would like users to be able to drag & drop just the scene.gltf to import the model which necessitates read access to the texture.png file from the app.

• some folder
  • scene.gltf
  • textures
    • texture.png

requirements

• need the App Sandbox for Mac App Store

environemnt

• macOS-X 12 (Monterey)

• Xcode 13.2