1 // Created on: 1995-10-19 2 // Created by: Andre LIEUTIER 3 // Copyright (c) 1995-1999 Matra Datavision 4 // Copyright (c) 1999-2014 OPEN CASCADE SAS 5 // 6 // This file is part of Open CASCADE Technology software library. 7 // 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. 13 // 14 // Alternatively, this file may be used under the terms of Open CASCADE 15 // commercial license or contractual agreement. 16 17 #ifndef _Plate_D1_HeaderFile 18 #define _Plate_D1_HeaderFile 19 20 #include <Standard.hxx> 21 #include <Standard_DefineAlloc.hxx> 22 #include <Standard_Handle.hxx> 23 24 #include <gp_XYZ.hxx> 25 class Plate_GtoCConstraint; 26 class Plate_FreeGtoCConstraint; 27 class gp_XYZ; 28 29 30 //! define an order 1 derivatives of a 3d valued 31 //! function of a 2d variable 32 class Plate_D1 33 { 34 public: 35 36 DEFINE_STANDARD_ALLOC 37 38 39 Standard_EXPORT Plate_D1(const gp_XYZ& du, const gp_XYZ& dv); 40 41 Standard_EXPORT Plate_D1(const Plate_D1& ref); 42 43 const gp_XYZ& DU() const; 44 45 const gp_XYZ& DV() const; 46 47 48 friend class Plate_GtoCConstraint; 49 friend class Plate_FreeGtoCConstraint; 50 51 52 protected: 53 54 55 56 57 58 private: 59 60 61 62 gp_XYZ Du; 63 gp_XYZ Dv; 64 65 66 }; 67 68 69 #include <Plate_D1.lxx> 70 71 72 73 74 75 #endif // _Plate_D1_HeaderFile 76