Hello everyone, First of all, I would like to say hi to the community staff and all participants here. I have a question about the behavior of coordinate systems when working with groups in SketchUp. It seems that different coordinate systems are used depending on whether I am in or out of group …

Yes, that’s how it works. I think I saw it explained once, but I’ve forgotten the reason.

Thank you for your response. If you happen to remember the reason later, please let me know. Much appreciated. :smiley:

I will guess it is how the code for inactive tools must work. I remember Thomas telling me that the API methods (and hence the C++ functions they wrap) expect global coordinates in edit contexts because the C++ also does. These methods can help when dealing with edit situations: Sketchup::Model…

That’s true, but it doesn’t really explain why the C++ works that way.

We also discussed this here: [image] How to get global coordinates of a Point3D Ruby API Hello, I try to get global coordinates of an Point3D. I was looking for this method in documentation, but I did not found anything to match. So, is it possible in SketchUp to get som…

Thank you. I’ve often seen you helping others in the community, and many of my questions were actually clarified by reading your responses. I was just curious about the underlying principle behind this behavior, as it’s not very intuitive and seems to involve some extra unnecessary steps (applying …

[image] xxgjzftd: Anyway, I’ll just accept it as one of SketchUp’s characteristics. The code base was inherited from the original guys who wrote it (as a college project I think.) It was written to use the OpenGL libraries (originally) so perhaps this is the “culprit”. With the release of S…

I’ve read through this response early and understand the situation now. Thank you both very much for your replies and your work. It’s getting late here and I need to rest. Have a nice day! :grinning:

Question about Coordinate Systems in and out of Group Edit Mode

Developers Ruby API

DanRathbun January 2, 2025, 11:57am 6

We also discussed this here:

Topic		Replies	Views
Is adding entities in Local or Global coordinates Ruby API make-2017	9	3575	October 11, 2018
What is coordinates relative to? Developers	5	3688	October 31, 2014
How to get global coordinates of a Point3D Ruby API	9	2749	September 2, 2020
View.screen_coords(Point) returns different results based on opened entities Ruby API	16	2636	July 2, 2017
Sketchup::Group#transformation. What is (or where is) the logic? Ruby API	6	156	December 28, 2025

Question about Coordinate Systems in and out of Group Edit Mode

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