0030679: Attached model hangs most of OCCT common functionality
[occt.git] / src / AppParCurves / AppParCurves_Gradient_BFGS.gxx
CommitLineData
b311480e 1// Created on: 1999-12-16
2// Created by: Atelier CAS2000
3// Copyright (c) 1999 Matra Datavision
973c2be1 4// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 5//
973c2be1 6// This file is part of Open CASCADE Technology software library.
b311480e 7//
d5f74e42 8// This library is free software; you can redistribute it and/or modify it under
9// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 10// by the Free Software Foundation, with special exception defined in the file
11// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12// distribution for complete text of the license and disclaimer of any warranty.
b311480e 13//
973c2be1 14// Alternatively, this file may be used under the terms of Open CASCADE
15// commercial license or contractual agreement.
7fd59977 16
17// Redefinition de math_BFGS:
18// ==========================
19
20
21AppParCurves_Gradient_BFGS::AppParCurves_Gradient_BFGS(math_MultipleVarFunctionWithGradient& F,
22 const math_Vector& StartingPoint,
23 const Standard_Real Tolerance3d,
24 const Standard_Real Tolerance2d,
25 const Standard_Real Eps,
26 const Standard_Integer NbIterations ):
07f1a2e6 27 math_BFGS(F.NbVariables(), Eps, NbIterations, Eps),
7fd59977 28 myTol3d(Tolerance3d),
29 myTol2d(Tolerance2d)
30{
31 Perform(F, StartingPoint);
32}
33
34Standard_Boolean AppParCurves_Gradient_BFGS::IsSolutionReached(math_MultipleVarFunctionWithGradient& F) const
35{
36 AppParCurves_ParFunction *F1 = (AppParCurves_ParFunction*) &F;
37 Standard_Boolean Result, Result2;
38
39 Result = (2.0 * fabs(TheMinimum - PreviousMinimum) <=
40 1.e-10 * (fabs(TheMinimum) + fabs(PreviousMinimum))+1.e-12);
41 Standard_Real MErr3d = F1->MaxError3d();
42 Standard_Real MErr2d = F1->MaxError2d();
43
44 Result2 = ((MErr3d <= myTol3d) && (MErr2d <= myTol2d));
45 return (Result || Result2);
46 }
47
48