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Geom_Surface virtual functions

Wahab_shah's picture

I wanted to build a surface using parametric equation e.g sphere equation as an example
i have derieved a class ParaSurface from Geom_surface and included all the virtual functions (you can see the Header.h)
Then i will use
BRepBuilderAPI_MakeFace with Handle(Geom_Surface) to make face.

Kindly help me understand the process of getting the surface with the required implementation.
I mean which of the virtual functions are needed when i make an object of that class.

OR if there is any other better way to make a surface, kindly refer it.