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42cf5bc1ca
Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl": - WOK-generated header files from inc and sources from drv are moved to src - CDL files removed - All packages are converted to nocdlpack
130 lines
4.5 KiB
C++
130 lines
4.5 KiB
C++
// Created on: 1994-09-05
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// Created by: Yves FRICAUD
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// Copyright (c) 1994-1999 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 <Geom2d_Curve.hxx>
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#include <Geom2dLProp_Curve2dTool.hxx>
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#include <Geom2dLProp_FuncCurExt.hxx>
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#include <Geom2dLProp_FuncCurNul.hxx>
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#include <Geom2dLProp_NumericCurInf2d.hxx>
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#include <LProp_CurAndInf.hxx>
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#include <math_BracketedRoot.hxx>
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#include <math_FunctionRoots.hxx>
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#include <Precision.hxx>
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//=======================================================================
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//function :
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//purpose :
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//=======================================================================
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Geom2dLProp_NumericCurInf2d::Geom2dLProp_NumericCurInf2d()
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{
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}
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//=======================================================================
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//function : PerformCurExt
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//purpose :
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//=======================================================================
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void Geom2dLProp_NumericCurInf2d::PerformCurExt (const Handle(Geom2d_Curve)& C,LProp_CurAndInf& Result)
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{
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PerformCurExt(C,Geom2dLProp_Curve2dTool::FirstParameter(C),Geom2dLProp_Curve2dTool::LastParameter(C),Result);
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}
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//=======================================================================
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//function : PerformCurExt
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//purpose :
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//=======================================================================
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void Geom2dLProp_NumericCurInf2d::PerformCurExt (const Handle(Geom2d_Curve)& C,
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const Standard_Real UMin,
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const Standard_Real UMax,
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LProp_CurAndInf& Result)
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{
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isDone = Standard_True;
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Standard_Real EpsH = 1.e-4*(UMax - UMin);
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Standard_Real Tol = Precision::PConfusion();
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// la premiere recherce se fait avec une tolerance assez grande
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// car la derivee de la fonction est estimee assez grossierement.
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Geom2dLProp_FuncCurExt F(C,EpsH);
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Standard_Integer NbSamples = 100;
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Standard_Boolean SolType;
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math_FunctionRoots SolRoot (F,UMin,UMax,NbSamples,EpsH,EpsH,EpsH);
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if (SolRoot.IsDone()) {
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for (Standard_Integer j = 1; j <= SolRoot.NbSolutions(); j++) {
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Standard_Real Param = SolRoot.Value(j);
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// la solution est affinee.
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math_BracketedRoot BS (F,
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Param - EpsH,
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Param + EpsH,
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Tol);
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if (BS.IsDone()) {Param = BS.Root();}
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SolType = F.IsMinKC(Param);
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Result.AddExtCur(Param,SolType);
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}
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}
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else {
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isDone = Standard_False;
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}
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}
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//=======================================================================
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//function : PerformInf
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//purpose :
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//=======================================================================
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void Geom2dLProp_NumericCurInf2d::PerformInf(const Handle(Geom2d_Curve)& C,LProp_CurAndInf& Result)
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{
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PerformInf(C,Geom2dLProp_Curve2dTool::FirstParameter(C),Geom2dLProp_Curve2dTool::LastParameter(C),Result);
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}
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//=======================================================================
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//function : PerformInf
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//purpose :
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//=======================================================================
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void Geom2dLProp_NumericCurInf2d::PerformInf(const Handle(Geom2d_Curve)& C,
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const Standard_Real UMin,
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const Standard_Real UMax,
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LProp_CurAndInf& Result)
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{
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isDone = Standard_True;
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Geom2dLProp_FuncCurNul F(C);
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Standard_Real EpsX = 1.e-6;
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Standard_Real EpsF = 1.e-6;
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Standard_Integer NbSamples = 30;
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math_FunctionRoots SolRoot (F,UMin,UMax,NbSamples,EpsX,EpsF,EpsX);
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if (SolRoot.IsDone()) {
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for (Standard_Integer j = 1; j <= SolRoot.NbSolutions(); j++) {
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Result.AddInflection(SolRoot.Value(j));
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}
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}
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else {
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isDone = Standard_False;
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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 Geom2dLProp_NumericCurInf2d::IsDone() const
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{
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return isDone;
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}
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