BRep Package
A framework providing advanced tolerance control. If tolerance control is
required, you are advised to:
1. build a default precision for topology, using
the classes provided in the BRepAPI package
2. update the tolerance of the
resulting shape. Note that only vertices, edges and faces have meaningful
tolerance control.
The tolerance value must always comply with the condition
that face tolerances are more restrictive than edge tolerances which are more
restrictive than vertex tolerances.
In other words: Tol(Vertex) >= Tol(Edge) >=
Tol(Face). Other rules in setting tolerance include:
you can open up tolerance but should never restrict it an edge cannot be included within the fusion of
the tolerance spheres of two vertices
IKO_BRep_Builder
IKO_BRep_Tool
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