Open CASCADE Technology  6.5.4
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines
Public Member Functions
Extrema_ExtPS Class Reference

It calculates all the extremum distances
between a point and a surface.
These distances can be minimum or maximum.

#include <Extrema_ExtPS.hxx>

Public Member Functions

DEFINE_STANDARD_ALLOC Extrema_ExtPS ()
 Extrema_ExtPS (const gp_Pnt &P, const Adaptor3d_Surface &S, const Standard_Real TolU, const Standard_Real TolV, const Extrema_ExtFlag F=Extrema_ExtFlag_MINMAX, const Extrema_ExtAlgo A=Extrema_ExtAlgo_Grad)
 It calculates all the distances.
NbU and NbV are used to locate the close points
to find the zeros. They must be great enough
such that if there is N extrema, there will
be N extrema between P and the grid.
TolU et TolV are used to determine the conditions
to stop the iterations; at the iteration number n:
(Un - Un-1) < TolU and (Vn - Vn-1) < TolV .

 Extrema_ExtPS (const gp_Pnt &P, const Adaptor3d_Surface &S, const Standard_Real Uinf, const Standard_Real Usup, const Standard_Real Vinf, const Standard_Real Vsup, const Standard_Real TolU, const Standard_Real TolV, const Extrema_ExtFlag F=Extrema_ExtFlag_MINMAX, const Extrema_ExtAlgo A=Extrema_ExtAlgo_Grad)
 It calculates all the distances.
NbU and NbV are used to locate the close points
to find the zeros. They must be great enough
such that if there is N extrema, there will
be N extrema between P and the grid.
TolU et TolV are used to determine the conditions
to stop the iterations; at the iteration number n:
(Un - Un-1) < TolU and (Vn - Vn-1) < TolV .

void Initialize (const Adaptor3d_Surface &S, const Standard_Real Uinf, const Standard_Real Usup, const Standard_Real Vinf, const Standard_Real Vsup, const Standard_Real TolU, const Standard_Real TolV)
 Initializes the fields of the algorithm.

void Perform (const gp_Pnt &P)
 Computes the distances.
An exception is raised if the fieds have not been
initialized.

Standard_Boolean IsDone () const
 Returns True if the distances are found.

Standard_Integer NbExt () const
 Returns the number of extremum distances.

Standard_Real SquareDistance (const Standard_Integer N) const
 Returns the value of the Nth resulting square distance.

Extrema_POnSurf Point (const Standard_Integer N) const
 Returns the point of the Nth resulting distance.

void TrimmedSquareDistances (Standard_Real &dUfVf, Standard_Real &dUfVl, Standard_Real &dUlVf, Standard_Real &dUlVl, gp_Pnt &PUfVf, gp_Pnt &PUfVl, gp_Pnt &PUlVf, gp_Pnt &PUlVl) const
 if the surface is a trimmed surface,
dUfVf is a square distance between
void SetFlag (const Extrema_ExtFlag F)
void SetAlgo (const Extrema_ExtAlgo A)

Constructor & Destructor Documentation


Member Function Documentation

void Extrema_ExtPS::TrimmedSquareDistances ( Standard_Real dUfVf,
Standard_Real dUfVl,
Standard_Real dUlVf,
Standard_Real dUlVl,
gp_Pnt PUfVf,
gp_Pnt PUfVl,
gp_Pnt PUlVf,
gp_Pnt PUlVl 
) const

and the point
of parameter FirstUParameter and FirstVParameter <PUfVf>.
dUfVl is a square distance between

and the point
of parameter FirstUParameter and LastVParameter <PUfVl>.
dUlVf is a square distance between

and the point
of parameter LastUParameter and FirstVParameter <PUlVf>.
dUlVl is a square distance between

and the point
of parameter LastUParameter and LastVParameter <PUlVl>.


The documentation for this class was generated from the following file: