Some years ago - i found this after deep internet research
:
www.graphisoft.com/ftp/techsupport/documentation/developer_docs/BasicLibraryDoc/10/Window-Macros/PolygonOperations.html
It seems to describe the possibility to follow the polygone of a wall and give it to an array-which is then usable for GDL-Operations - for AC-Version 10.
The problem is - its not working!
Maybe this library-extensions are not implementet any more in the version 18
or it was meant very different to my poor "understandings".
The document seems to be part of a much larger documentary - but its not possible for me to find the root-directory of it. It is not listed in Graphisofts-homepage.
Obviously - Graphisoft developers where thinking of this topic too - what makes me hope - some day there could be a solution for getting polygones usable for GDL out of normal Archicad-Elements like slabs and walls - which we can follow ith our gdl-programs!
AC5.5-AC27EduAut, PC-Win10, MacbookAirM1, MacbookM1Max, Win-I7+Nvidia