Title: What is the difference between "GeomFill_BSplineCurves" and "GeomFill_ConstrainedFilling" in OpenCASCADE?

[calciffer]

Hi everyone,

I'm currently working with b-spline surfaces in OpenCASCADE, and I noticed that both "GeomFill_BSplineCurves" and "GeomFill_ConstrainedFilling" can be used to generate b-spline surfaces by passing in three or four b-spline curves. However, I'm curious if there are any differences in the results produced by these two classes?

Additionally, I also noticed that FreeCAD only uses the "GeomFill_BSplineCurves" class while Analysis Situs only uses "GeomFill_ConstrainedFilling". Can anyone explain why this might be the case?

Thanks in advance for your help!

 

[Quaoar]

To be honest, I've never used any of those. The only reason why Analysis Situs has some occurrence of "constrained filling" is because I was experimenting with Coons surfaces (http://quaoar.su/blog/page/stroim-loskut-kunsa). The result was far from perfect. Did you get any useful results from it?

 

[calciffer]

Thank you for your kind reply.
I am a novice in the field of OpenCASCADE, and I am just casually exploring this vast treasure trove to understand what functionalities I can accomplish with it.