1 // Created on: 1991-12-02
2 // Created by: Laurent PAINNOT
3 // Copyright (c) 1991-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
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
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.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
17 #ifndef _AppDef_MyBSplGradientOfBSplineCompute_HeaderFile
18 #define _AppDef_MyBSplGradientOfBSplineCompute_HeaderFile
20 #include <Standard.hxx>
21 #include <Standard_DefineAlloc.hxx>
22 #include <Standard_Handle.hxx>
24 #include <AppParCurves_MultiBSpCurve.hxx>
25 #include <math_Vector.hxx>
26 #include <Standard_Real.hxx>
27 #include <Standard_Boolean.hxx>
28 #include <Standard_Integer.hxx>
29 #include <AppParCurves_HArray1OfConstraintCouple.hxx>
30 #include <TColStd_Array1OfReal.hxx>
31 #include <TColStd_Array1OfInteger.hxx>
32 class Standard_OutOfRange;
33 class StdFail_NotDone;
34 class AppDef_MultiLine;
35 class AppDef_MyLineTool;
36 class AppDef_BSpParLeastSquareOfMyBSplGradientOfBSplineCompute;
37 class AppDef_BSpParFunctionOfMyBSplGradientOfBSplineCompute;
38 class AppDef_BSpGradient_BFGSOfMyBSplGradientOfBSplineCompute;
39 class AppParCurves_MultiBSpCurve;
43 class AppDef_MyBSplGradientOfBSplineCompute
50 //! Tries to minimize the sum (square(||Qui - Bi*Pi||))
51 //! where Pui describe the approximating BSpline curves'Poles
52 //! and Qi the MultiLine points with a parameter ui.
53 //! In this algorithm, the parameters ui are the unknowns.
54 //! The tolerance required on this sum is given by Tol.
55 //! The desired degree of the resulting curve is Deg.
56 Standard_EXPORT AppDef_MyBSplGradientOfBSplineCompute(const AppDef_MultiLine& SSP, const Standard_Integer FirstPoint, const Standard_Integer LastPoint, const Handle(AppParCurves_HArray1OfConstraintCouple)& TheConstraints, math_Vector& Parameters, const TColStd_Array1OfReal& Knots, const TColStd_Array1OfInteger& Mults, const Standard_Integer Deg, const Standard_Real Tol3d, const Standard_Real Tol2d, const Standard_Integer NbIterations = 1);
58 //! Tries to minimize the sum (square(||Qui - Bi*Pi||))
59 //! where Pui describe the approximating BSpline curves'Poles
60 //! and Qi the MultiLine points with a parameter ui.
61 //! In this algorithm, the parameters ui are the unknowns.
62 //! The tolerance required on this sum is given by Tol.
63 //! The desired degree of the resulting curve is Deg.
64 Standard_EXPORT AppDef_MyBSplGradientOfBSplineCompute(const AppDef_MultiLine& SSP, const Standard_Integer FirstPoint, const Standard_Integer LastPoint, const Handle(AppParCurves_HArray1OfConstraintCouple)& TheConstraints, math_Vector& Parameters, const TColStd_Array1OfReal& Knots, const TColStd_Array1OfInteger& Mults, const Standard_Integer Deg, const Standard_Real Tol3d, const Standard_Real Tol2d, const Standard_Integer NbIterations, const Standard_Real lambda1, const Standard_Real lambda2);
66 //! returns True if all has been correctly done.
67 Standard_EXPORT Standard_Boolean IsDone() const;
69 //! returns all the BSpline curves approximating the
70 //! MultiLine SSP after minimization of the parameter.
71 Standard_EXPORT AppParCurves_MultiBSpCurve Value() const;
73 //! returns the difference between the old and the new
75 //! An exception is raised if NotDone.
76 //! An exception is raised if Index<1 or Index>NbParameters.
77 Standard_EXPORT Standard_Real Error (const Standard_Integer Index) const;
79 //! returns the maximum difference between the old and the
80 //! new approximation.
81 Standard_EXPORT Standard_Real MaxError3d() const;
83 //! returns the maximum difference between the old and the
84 //! new approximation.
85 Standard_EXPORT Standard_Real MaxError2d() const;
87 //! returns the average error between the old and the
88 //! new approximation.
89 Standard_EXPORT Standard_Real AverageError() const;
97 Standard_EXPORT void Perform (const AppDef_MultiLine& SSP, const Standard_Integer FirstPoint, const Standard_Integer LastPoint, const Handle(AppParCurves_HArray1OfConstraintCouple)& TheConstraints, math_Vector& Parameters, const TColStd_Array1OfReal& Knots, const TColStd_Array1OfInteger& Mults, const Standard_Integer Deg, const Standard_Real Tol3d, const Standard_Real Tol2d, const Standard_Integer NbIterations = 200);
106 AppParCurves_MultiBSpCurve SCU;
107 math_Vector ParError;
108 Standard_Real AvError;
109 Standard_Real MError3d;
110 Standard_Real MError2d;
111 Standard_Real mylambda1;
112 Standard_Real mylambda2;
113 Standard_Boolean myIsLambdaDefined;
114 Standard_Boolean Done;
125 #endif // _AppDef_MyBSplGradientOfBSplineCompute_HeaderFile