DA,
I'm trying to assemble a list of open source implementation of NURBS-related algorithms (besides / on top of OCCT). Here is what I have so far:
http://ayam.sourceforge.net/
https://github.com/ssg-aero/gbs
https://github.com/DLR-SC/tigl
https://gitlab.com/ssv/Mobius/...
I think I'm hitting some limitations of the AIS module (or the documentation thereof - e.g. how do I display an edge with the orientation indicated).
Is it worthwhile to invest time into converting to OCCT+VTK? Are there any other alternatives that should be considered? I'm looking for some...
Regarding constrained surface filling, would you have some pointer on the theory? I found this:
https://www.db-thueringen.de/servlets/MCRFileNodeServlet/dbt_derivate_00002514/ilm1-2003000109.pdf
Is similar approach used in OCCT?