Null curves in sample models. What you do with them ?

In sample brep file Axis_of_bearing.brep, you have faces with wire edges that have no curve attached to them.

When you explore a face via wire and edge, what are you supposed to do when you encounter an edge with no curve ?

Are you supposed to assume it's a zero length edge (if so, why are they in the file) ?

Can you just bypass the edge and go to the next one to build face loops ?

Ugo Capeto's picture

eheh, ok, those edges are actually reduced to points.
they are located at the poles of spheres. so for each sphere, the loop consists of the seam edge, an edge reduced to a point (the pole), the seam edge and the other pole.