Removing all the surfaces from an object

[JimCarruthers]

I’ve got a script that uses “Brep.Faces.RemoveAt” to delete surfaces from polysurfaces…and I just relalized, how do I identify and handle if I’ve up and removed all of them? If I use doc.Objects.Replace to update the model with an empty Brep…that’s gonna be bad? I guess I can tell by the length of the list of Breps if I’m about to delete the whole thing…?

[menno (Menno Deij - van Rijswijk)]

A brep without any faces is probably not valid, and replacing with an invalid brep will probably fail. But try it out, see what happens

[JimCarruthers]

Yeah it didn’t generate any sort of error, so that seemed bad, I decided to check if I was about to remove everything and use Delete instead.

[Tom_P]

also check this older post:

@dale

Here is a slightly more robust version:

  private void RunScript(Brep brep, int index, ref object A)
  {
    if (null != brep && index >= 0 && index < brep.Faces.Count)
    {
      brep.Faces.RemoveAt(index);
      brep.Compact();
      if (brep.IsValid)
        A = brep;
    }
  }

– Dale