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9775fa6110
Macro NO_CXX_EXCEPTION was removed from code. Method Raise() was replaced by explicit throw statement. Method Standard_Failure::Caught() was replaced by normal C++mechanism of exception transfer. Method Standard_Failure::Caught() is deprecated now. Eliminated empty constructors. Updated samples. Eliminate empty method ChangeValue from NCollection_Map class. Removed not operable methods from NCollection classes.
132 lines
4.0 KiB
C++
132 lines
4.0 KiB
C++
// Created on: 1995-07-18
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// Created by: Modelistation
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// Copyright (c) 1995-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <Extrema_GenLocateExtPS.hxx>
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#include <Adaptor3d_Surface.hxx>
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#include <Extrema_FuncPSNorm.hxx>
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#include <Extrema_FuncPSDist.hxx>
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#include <Extrema_POnSurf.hxx>
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#include <gp_Pnt.hxx>
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#include <math_FunctionSetRoot.hxx>
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#include <math_BFGS.hxx>
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#include <math_Vector.hxx>
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#include <StdFail_NotDone.hxx>
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//=======================================================================
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//function : Extrema_GenLocateExtPS
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//purpose :
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//=======================================================================
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Extrema_GenLocateExtPS::Extrema_GenLocateExtPS(const Adaptor3d_Surface& theS,
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const Standard_Real theTolU,
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const Standard_Real theTolV)
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: mySurf(theS),
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myTolU(theTolU), myTolV(theTolV),
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myDone(Standard_False),
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mySqDist(-1.0)
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{
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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 Extrema_GenLocateExtPS::Perform(const gp_Pnt& theP,
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const Standard_Real theU0,
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const Standard_Real theV0,
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const Standard_Boolean isDistanceCriteria)
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{
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myDone = Standard_False;
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// Prepare initial data structures.
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math_Vector aTol(1, 2), aStart(1, 2), aBoundInf(1, 2), aBoundSup(1, 2);
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// Tolerance.
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aTol(1) = myTolU;
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aTol(2) = myTolV;
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// Initial solution approximation.
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aStart(1) = theU0;
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aStart(2) = theV0;
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// Borders.
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aBoundInf(1) = mySurf.FirstUParameter();
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aBoundInf(2) = mySurf.FirstVParameter();
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aBoundSup(1) = mySurf.LastUParameter();
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aBoundSup(2) = mySurf.LastVParameter();
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if (isDistanceCriteria == Standard_False)
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{
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// Normal projection criteria.
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Extrema_FuncPSNorm F(theP,mySurf);
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math_FunctionSetRoot SR (F, aTol);
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SR.Perform(F, aStart, aBoundInf, aBoundSup);
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if (!SR.IsDone())
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return;
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mySqDist = F.SquareDistance(1);
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myPoint = F.Point(1);
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myDone = Standard_True;
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}
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else
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{
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// Distance criteria.
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Extrema_FuncPSDist F(mySurf, theP);
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math_BFGS aSolver(2);
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aSolver.Perform(F, aStart);
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if (!aSolver.IsDone())
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return;
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math_Vector aResPnt(1,2);
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aSolver.Location(aResPnt);
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mySqDist = aSolver.Minimum();
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myPoint.SetParameters(aResPnt(1), aResPnt(2), mySurf.Value(aResPnt(1), aResPnt(2)));
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myDone = Standard_True;
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}
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}
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//=======================================================================
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//function : IsDone
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//purpose :
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//=======================================================================
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Standard_Boolean Extrema_GenLocateExtPS::IsDone () const
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{
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return myDone;
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}
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//=======================================================================
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//function : SquareDistance
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//purpose :
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//=======================================================================
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Standard_Real Extrema_GenLocateExtPS::SquareDistance () const
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{
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if (!IsDone()) { throw StdFail_NotDone(); }
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return mySqDist;
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}
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//=======================================================================
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//function : Point
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//purpose :
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//=======================================================================
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const Extrema_POnSurf& Extrema_GenLocateExtPS::Point () const
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{
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if (!IsDone()) { throw StdFail_NotDone(); }
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return myPoint;
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}
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