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  • $\begingroup$ Side note: It is to notice in the Spreadsheet Editor that the scaling by -1 along X direction is recorded as a rotation by 180° around Z axis... $\endgroup$
    – StefLAncien
    Commented Jun 27 at 11:54
  • $\begingroup$ More precisely : Blender appears to need all 3 coordinates of scaling to be the same sign. Flipping X axis flips Y and Z as well. So it adds a 180° rotation along Z axis to compensate. I've never noticed that behavior but a quick testing on your file brings me to believe that's how it works. $\endgroup$
    – Lutzi
    Commented Jun 27 at 12:58
  • $\begingroup$ Wow that's a very easy node tree. Thank you very much! I'll try to understand it! $\endgroup$
    – adrian.blender
    Commented Jun 28 at 12:14
  • $\begingroup$ @StefLAncien What is the group input? I feel like it's not just the imported node, right? Because where do I get the resolution output from? $\endgroup$
    – adrian.blender
    Commented Jul 1 at 7:44
  • $\begingroup$ @adrian.blender The Group Input node is by default providing the Geometry the GN modifier is attached to. If an input socket of another node is connected to the empty socket that is always present as the last socket of the Group Input node, this socket becomes an Input for the GN graph. Its properties can be edited using the side panel of the GN Editor. At the same time, a new entry is created in the Modifier Properties panel (at the right side of the default GUI). Using Ctrl+h, unused sockets are hidden. This is why only Radius and Resolution are displayed, not the last empty. $\endgroup$
    – StefLAncien
    Commented Jul 1 at 19:41