[Sidefx-houdini-list] Grouping Outside Faces

François Duchesneau sidefx at trinix.ca
Wed Jan 2 20:14:07 EST 2008

You can append a Group Sop before the extrude, set the type to "Point" 
and go in the "edge" tab and check "Unshared Edges". This creates a 
group of all points being the boundary. Invert the group with a boolean 
operation inside that Group Sop to get all points that are not a boundary.

All the edges in that group will be included inside the geometry after 
the extrude.


Edmond Earl Smith wrote:
> Hello everyone, I have a fractured object that I create by extruding a 
> grid and partitioning the pieces.  I would like to group just the faces 
> that are "inside" the object.  Much like the group extrudeSide when you 
> use the polyextrude but without the outer faces, just the inner ones.
> thanks,
> Eddie
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