I got a task in the university to add a picture as texture to the SCNGeometry Octahedron. It's my first project in Swift.

There are lot's of advices for the UIKit with UIImage class, but I'm using AppKit for macos and NSImage class. And none of the options I found in the web haven't worked for me yet. Probably I misunderstand something fundamental. Well, firstly I dragndroped a picture named "sims.jpg" to my project folder...