User defined GDL Polygon with editing midpoints

[MuriloNoleto]

Hello all,
I've been working on a GDL file for floor which is done as an user defined polygon polygon. When one midpoint moves, a new segment is created, as well as new mid-points (as editable hotspot), like image attached.

Could someone, please, give me an advice how to start making this? I made some attempts creating some  parameters arrays here and there, but the whole thing is confusing for me yet.
Thanks in advance.

[leceta]

hi, you should have a look here:

https://community.graphisoft.com/t5/Developer-forum/Dynamic-Polyline-base-code-object/m-p/198874

[MuriloNoleto]

Thanks @leceta for link  and @sinceV6 for developing/sharing such great stuff.