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1 | // Copyright (c) 2014-2014 OPEN CASCADE SAS |
| 2 | // |
| 3 | // This file is part of Open CASCADE Technology software library. |
| 4 | // |
| 5 | // This library is free software; you can redistribute it and/or modify it under |
| 6 | // the terms of the GNU Lesser General Public License version 2.1 as published |
| 7 | // by the Free Software Foundation, with special exception defined in the file |
| 8 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
| 9 | // distribution for complete text of the license and disclaimer of any warranty. |
| 10 | // |
| 11 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 12 | // commercial license or contractual agreement. |
| 13 | |
| 14 | #ifndef _GCPnts_DistFunction2d_HeaderFile |
| 15 | #define _GCPnts_DistFunction2d_HeaderFile |
| 16 | |
| 17 | #include <gp_Lin2d.hxx> |
| 18 | #include <math_Function.hxx> |
| 19 | #include <math_MultipleVarFunction.hxx> |
| 20 | #include <Adaptor2d_Curve2d.hxx> |
| 21 | |
| 22 | class gp_Pnt2d; |
| 23 | |
| 24 | //! Class to define function, which calculates square distance between point on curve |
| 25 | //! C(u), U1 <= u <= U2 and line passing through points C(U1) and C(U2) |
| 26 | //! This function is used in any minimisation algorithm to define maximal deviation between curve and line, |
| 27 | //! which required one variable function without derivative (for ex. math_BrentMinimum) |
| 28 | class GCPnts_DistFunction2d : public math_Function |
| 29 | { |
| 30 | public: |
| 31 | Standard_EXPORT GCPnts_DistFunction2d(const Adaptor2d_Curve2d& theCurve, |
| 32 | const Standard_Real U1, const Standard_Real U2); |
| 33 | // |
| 34 | Standard_EXPORT GCPnts_DistFunction2d(const GCPnts_DistFunction2d& theOther); |
| 35 | |
| 36 | Standard_EXPORT virtual Standard_Boolean Value (const Standard_Real X, |
| 37 | Standard_Real& F); |
| 38 | private: |
| 39 | GCPnts_DistFunction2d & operator = (const GCPnts_DistFunction2d & theOther); |
| 40 | |
| 41 | const Adaptor2d_Curve2d& myCurve; |
| 42 | gp_Lin2d myLin; |
| 43 | Standard_Real myU1; |
| 44 | Standard_Real myU2; |
| 45 | }; |
| 46 | // |
| 47 | //! The same as class GCPnts_DistFunction2d, |
| 48 | //! but it can be used in minimization algorithms that |
| 49 | //! requires multi variable function |
| 50 | class GCPnts_DistFunction2dMV : public math_MultipleVarFunction |
| 51 | { |
| 52 | public: |
| 53 | Standard_EXPORT GCPnts_DistFunction2dMV(GCPnts_DistFunction2d& theCurvLinDist); |
| 54 | |
| 55 | Standard_EXPORT virtual Standard_Boolean Value (const math_Vector& X, |
| 56 | Standard_Real& F); |
| 57 | |
| 58 | |
| 59 | Standard_EXPORT virtual Standard_Integer NbVariables() const; |
| 60 | |
| 61 | private: |
| 62 | GCPnts_DistFunction2dMV & operator = (const GCPnts_DistFunction2dMV & theOther); |
| 63 | GCPnts_DistFunction2d& myMaxCurvLinDist; |
| 64 | }; |
| 65 | // |
| 66 | |
| 67 | |
| 68 | #endif // _GCPnts_DistFunction2d_HeaderFile |
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