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79 lines
2.6 KiB
C++
Executable File
79 lines
2.6 KiB
C++
Executable File
// File: BRepExtrema_ExtPF.cxx
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// Created: Wed Dec 15 16:48:53 1993
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// Author: Christophe MARION
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// modified by MPS (june 96) : on utilise BRepClass_FaceClassifier seulement
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// si IsDone de Extrema est vrai
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#include <BRepExtrema_ExtPF.hxx>
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#include <BRep_Tool.hxx>
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#include <BRepTools.hxx>
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#include <BRepClass_FaceClassifier.hxx>
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#include <gp_Pnt2d.hxx>
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#include <BRepAdaptor_Surface.hxx>
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//=======================================================================
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//function : BRepExtrema_ExtPF
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//purpose :
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//=======================================================================
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BRepExtrema_ExtPF::BRepExtrema_ExtPF(const TopoDS_Vertex& TheVertex, const TopoDS_Face& TheFace,
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const Extrema_ExtFlag TheFlag, const Extrema_ExtAlgo TheAlgo)
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{
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Initialize(TheFace,TheFlag,TheAlgo);
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Perform(TheVertex,TheFace);
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}
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//=======================================================================
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//function : Initialize
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//purpose :
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//=======================================================================
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void BRepExtrema_ExtPF::Initialize(const TopoDS_Face& TheFace,
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const Extrema_ExtFlag TheFlag, const Extrema_ExtAlgo TheAlgo)
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{
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// cette surface doit etre en champ. Extrema ne fait
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// pas de copie et prend seulement un pointeur dessus.
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mySurf.Initialize(TheFace, Standard_False);
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const Standard_Real Tol = BRep_Tool::Tolerance(TheFace);
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Standard_Real U1, U2, V1, V2;
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BRepTools::UVBounds(TheFace, U1, U2, V1, V2);
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myExtPS.SetFlag(TheFlag);
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myExtPS.SetAlgo(TheAlgo);
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myExtPS.Initialize(mySurf, U1, U2, V1, V2, Tol, Tol);
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}
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//=======================================================================
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//function : Perform
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//purpose :
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//=======================================================================
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void BRepExtrema_ExtPF::Perform(const TopoDS_Vertex& TheVertex, const TopoDS_Face& TheFace)
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{
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mySqDist.Clear();
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myPoints.Clear();
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const gp_Pnt P = BRep_Tool::Pnt(TheVertex);
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myExtPS.Perform(P);
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// Exploration of points and classification
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if (myExtPS.IsDone())
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{
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BRepClass_FaceClassifier classifier;
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Standard_Real U1, U2;
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const Standard_Real Tol = BRep_Tool::Tolerance(TheFace);
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for (Standard_Integer i = 1; i <= myExtPS.NbExt(); i++)
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{
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myExtPS.Point(i).Parameter(U1, U2);
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const gp_Pnt2d Puv(U1, U2);
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classifier.Perform(TheFace, Puv, Tol);
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const TopAbs_State state = classifier.State();
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if(state == TopAbs_ON || state == TopAbs_IN)
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{
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mySqDist.Append(myExtPS.SquareDistance(i));
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myPoints.Append(myExtPS.Point(i));
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}
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}
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}
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}
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