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Oriented Bounding Box Hierarchies

Benjamin Bihler's picture
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If I have understood the source code documentation correctly, Open CASCADE supports only hierarchies of axis-aligned bounding boxes. Are there any plans to also implement hierarchies of oriented bounding boxes? Or has anyone done that yet with Open CASCADE?

Thank you.

Benjamin

Kirill Gavrilov's picture

OCCT 7.3.0 introduced an algorithm (BRepBndLib::AddOBB) building a (tight) Oriented Bounding Box (Bnd_OBB) for the geometry.
Release notes also refer to experimental (and optional) usage of OBB in Boolean Operations, but I don't know details - I suppose there is no yet builders for hierarchy of such OBB:

In Boolean operations the oriented bounded boxes are available in experimental mode and can be turned on by a special option SetUseOBB(flag)

Benjamin Bihler's picture

Thank you, Kirill. I have already been using Open CASCADE OBBs. They work really well. What I am interested in (now) are especially hierarchies.