// Created on: 2015-09-21 // Copyright (c) 2015 OPEN CASCADE SAS // // This file is part of Open CASCADE Technology software library. // // This library is free software; you can redistribute it and/or modify it under // the terms of the GNU Lesser General Public License version 2.1 as published // by the Free Software Foundation, with special exception defined in the file // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT // distribution for complete text of the license and disclaimer of any warranty. // // Alternatively, this file may be used under the terms of Open CASCADE // commercial license or contractual agreement. #ifndef _GeomEvaluator_OffsetSurface_HeaderFile #define _GeomEvaluator_OffsetSurface_HeaderFile #include #include #include #include //! Allows to calculate values and derivatives for offset surfaces class GeomEvaluator_OffsetSurface : public GeomEvaluator_Surface { public: //! Initialize evaluator by surface Standard_EXPORT GeomEvaluator_OffsetSurface( const Handle(Geom_Surface)& theBase, const Standard_Real theOffset, const Handle(Geom_OsculatingSurface)& theOscSurf = Handle(Geom_OsculatingSurface)()); //! Initialize evaluator by surface adaptor Standard_EXPORT GeomEvaluator_OffsetSurface( const Handle(GeomAdaptor_Surface)& theBase, const Standard_Real theOffset, const Handle(Geom_OsculatingSurface)& theOscSurf = Handle(Geom_OsculatingSurface)()); //! Change the offset value void SetOffsetValue(Standard_Real theOffset) { myOffset = theOffset; } //! Value of surface Standard_EXPORT void D0(const Standard_Real theU, const Standard_Real theV, gp_Pnt& theValue) const Standard_OVERRIDE; //! Value and first derivatives of surface Standard_EXPORT void D1(const Standard_Real theU, const Standard_Real theV, gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V) const Standard_OVERRIDE; //! Value, first and second derivatives of surface Standard_EXPORT void D2(const Standard_Real theU, const Standard_Real theV, gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV) const Standard_OVERRIDE; //! Value, first, second and third derivatives of surface Standard_EXPORT void D3(const Standard_Real theU, const Standard_Real theV, gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV, gp_Vec& theD3U, gp_Vec& theD3V, gp_Vec& theD3UUV, gp_Vec& theD3UVV) const Standard_OVERRIDE; //! Calculates N-th derivatives of surface, where N = theDerU + theDerV. //! //! Raises if N < 1 or theDerU < 0 or theDerV < 0 Standard_EXPORT gp_Vec DN(const Standard_Real theU, const Standard_Real theV, const Standard_Integer theDerU, const Standard_Integer theDerV) const Standard_OVERRIDE; Standard_EXPORT Handle(GeomEvaluator_Surface) ShallowCopy() const Standard_OVERRIDE; DEFINE_STANDARD_RTTIEXT(GeomEvaluator_OffsetSurface,GeomEvaluator_Surface) private: //! Returns bounds of a base surface void Bounds(Standard_Real& theUMin, Standard_Real& theUMax, Standard_Real& theVMin, Standard_Real& theVMax) const; //! Recalculate D1 values of base surface into D0 value of offset surface void CalculateD0(const Standard_Real theU, const Standard_Real theV, gp_Pnt& theValue, const gp_Vec& theD1U, const gp_Vec& theD1V) const; //! Recalculate D2 values of base surface into D1 values of offset surface void CalculateD1(const Standard_Real theU, const Standard_Real theV, gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, const gp_Vec& theD2U, const gp_Vec& theD2V, const gp_Vec& theD2UV) const; //! Recalculate D3 values of base surface into D2 values of offset surface void CalculateD2(const Standard_Real theU, const Standard_Real theV, gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV, const gp_Vec& theD3U, const gp_Vec& theD3V, const gp_Vec& theD3UUV, const gp_Vec& theD3UVV) const; //! Recalculate D3 values of base surface into D3 values of offset surface void CalculateD3(const Standard_Real theU, const Standard_Real theV, gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV, gp_Vec& theD3U, gp_Vec& theD3V, gp_Vec& theD3UUV, gp_Vec& theD3UVV) const; //! Calculate DN of offset surface based on derivatives of base surface gp_Vec CalculateDN(const Standard_Real theU, const Standard_Real theV, const Standard_Integer theNu, const Standard_Integer theNv, const gp_Vec& theD1U, const gp_Vec& theD1V) const; //! Calculate value of base surface/adaptor void BaseD0(const Standard_Real theU, const Standard_Real theV, gp_Pnt& theValue) const; //! Calculate value and first derivatives of base surface/adaptor void BaseD1(const Standard_Real theU, const Standard_Real theV, gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V) const; //! Calculate value, first and second derivatives of base surface/adaptor void BaseD2(const Standard_Real theU, const Standard_Real theV, gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV) const; //! Calculate value, first, second and third derivatives of base surface/adaptor void BaseD3(const Standard_Real theU, const Standard_Real theV, gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV, gp_Vec& theD3U, gp_Vec& theD3V, gp_Vec& theD3UUV, gp_Vec& theD3UVV) const; //! Replace zero derivative by the corresponding derivative in a near point. //! Return true, if the derivative was replaced. Standard_Boolean ReplaceDerivative(const Standard_Real theU, const Standard_Real theV, gp_Vec& theDU, gp_Vec& theDV, const Standard_Real theSquareTol) const; private: Handle(Geom_Surface) myBaseSurf; Handle(GeomAdaptor_Surface) myBaseAdaptor; Standard_Real myOffset; ///< offset value Handle(Geom_OsculatingSurface) myOscSurf; ///< auxiliary osculating surface }; DEFINE_STANDARD_HANDLE(GeomEvaluator_OffsetSurface, GeomEvaluator_Surface) #endif // _GeomEvaluator_OffsetSurface_HeaderFile