Guid from Brep to Surface

I encountered a problem that when I converted a Referenced Brep (which is originally a Surface) into a Surface, the Guid of the Brep got lost (as show in the image below).

Is this normal or should it not loose this information?

Replies to This Discussion

Permalink Reply by David Rutten on May 21, 2013 at 1:07pm

This is not a bug. Converting a Brep to a Surface disassociates it from the original rhino object. Any conversion has this effect.

Why not just reference the object as a Surface to begin with?

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Reino on May 22, 2013 at 1:19am

Ok, I did not know it made such a difference.

First (not very good) reason for not referencing it directly is that I might not always be that precise in using the right container (because normally the used geometry stays the same).

Second (more important) reason is that the Geometry Pipeline does not allow to reference surfaces, so I have to reference my Surfaces as Breps. I expected that the Guid would stay the same, but I guess when you change the actual geometry it is good to not keep the Guid to the 'wrong' object.

As a work around it is still possible to extract the Guids (from pipeline) before converting it to surface and sort them together, but it is just a bit more of a hassle.

RSS