TopTrans_SurfaceTransition.hxx File Reference

#include <Standard.hxx>
#include <Standard_Macro.hxx>
#include <gp_Dir.hxx>
#include <Standard_Real.hxx>
#include <TColStd_Array2OfReal.hxx>
#include <TopTrans_Array2OfOrientation.hxx>
#include <Standard_Integer.hxx>
#include <Standard_Boolean.hxx>
#include <Standard_Address.hxx>
#include <TopAbs_Orientation.hxx>
#include <TCollection_Array2.lxx>
#include <TopAbs_State.hxx>

Data Structures

class TopTrans_SurfaceTransition

This algorithm is used to compute the transition
of a 3D surface intersecting a topological surfacic
boundary on a 3D curve ( intersection curve ).
The boundary is described by a set of faces
each face is described by

its support surface,
an orientation defining its matter side.
The geometric elements are described locally at the
intersection point by a second order development.
A surface is described by the normal vector, the
principal directions and the principal curvatures.
A curve is described by the tangent, the normal
and the curvature.
The algorithm keeps track of the two faces elements
closest to the part of the curve "before" and "after"
the intersection, these two elements are updated
for each new face.
The position of the curve can be computed when at
least one surface element has been given, this
position is "In","Out" or "On" for the part of the
curve "Before" or "After" the intersection.

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