Left-clicking on an object sets the cursor onto the object surface, where the muse-cursor was.
How can I retrieve the cursor location on the object surface now?
Check the cusor location on the right panel. If the panel is not open, press N. I hope this is what you’re looking for.
If I’m not mistaken, you can get the 3d cursor location by:
bpy.context.scene.cursor_location
The coordinates will be in world space - but you should be able to convert this to any objects local space:
[SOLVED] Global to Local coordinates
And by the way: for more advanced needs you can always use ray casts. This will give you more information about the object/face. Blender comes with an example/template on this matter: “operator_modal_view3d_raycast.py”
Thank you Helge! That was what I was looking for.
Glad it helped. Good luck with the script 