1 // Created on: 2015-09-21 2 // Copyright (c) 2015 OPEN CASCADE SAS 3 // 4 // This file is part of Open CASCADE Technology software library. 5 // 6 // This library is free software; you can redistribute it and/or modify it under 7 // the terms of the GNU Lesser General Public License version 2.1 as published 8 // by the Free Software Foundation, with special exception defined in the file 9 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT 10 // distribution for complete text of the license and disclaimer of any warranty. 11 // 12 // Alternatively, this file may be used under the terms of Open CASCADE 13 // commercial license or contractual agreement. 14 15 #ifndef _GeomEvaluator_SurfaceOfExtrusion_HeaderFile 16 #define _GeomEvaluator_SurfaceOfExtrusion_HeaderFile 17 18 #include <GeomEvaluator_Surface.hxx> 19 20 #include <Geom_Curve.hxx> 21 #include <gp_Dir.hxx> 22 23 class Adaptor3d_HCurve; 24 25 //! Allows to calculate values and derivatives for surfaces of linear extrusion 26 class GeomEvaluator_SurfaceOfExtrusion : public GeomEvaluator_Surface 27 { 28 public: 29 //! Initialize evaluator by surface 30 Standard_EXPORT GeomEvaluator_SurfaceOfExtrusion(const Handle(Geom_Curve)& theBase, 31 const gp_Dir& theExtrusionDir); 32 //! Initialize evaluator by surface adaptor 33 Standard_EXPORT GeomEvaluator_SurfaceOfExtrusion(const Handle(Adaptor3d_HCurve)& theBase, 34 const gp_Dir& theExtrusionDir); 35 36 ///! Changes the direction of extrusion SetDirection(const gp_Dir & theDirection)37 void SetDirection(const gp_Dir& theDirection) 38 { myDirection = theDirection; } 39 40 //! Value of surface 41 Standard_EXPORT void D0(const Standard_Real theU, const Standard_Real theV, 42 gp_Pnt& theValue) const Standard_OVERRIDE; 43 //! Value and first derivatives of surface 44 Standard_EXPORT void D1(const Standard_Real theU, const Standard_Real theV, 45 gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V) const Standard_OVERRIDE; 46 //! Value, first and second derivatives of surface 47 Standard_EXPORT void D2(const Standard_Real theU, const Standard_Real theV, 48 gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, 49 gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV) const Standard_OVERRIDE; 50 //! Value, first, second and third derivatives of surface 51 Standard_EXPORT void D3(const Standard_Real theU, const Standard_Real theV, 52 gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, 53 gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV, 54 gp_Vec& theD3U, gp_Vec& theD3V, 55 gp_Vec& theD3UUV, gp_Vec& theD3UVV) const Standard_OVERRIDE; 56 //! Calculates N-th derivatives of surface, where N = theDerU + theDerV. 57 //! 58 //! Raises if N < 1 or theDerU < 0 or theDerV < 0 59 Standard_EXPORT gp_Vec DN(const Standard_Real theU, 60 const Standard_Real theV, 61 const Standard_Integer theDerU, 62 const Standard_Integer theDerV) const Standard_OVERRIDE; 63 64 DEFINE_STANDARD_RTTIEXT(GeomEvaluator_SurfaceOfExtrusion,GeomEvaluator_Surface) 65 66 private: 67 //! Shift the point along direction to the given distance (theShift) Shift(const Standard_Real theShift,gp_Pnt & thePoint) const68 void Shift(const Standard_Real theShift, gp_Pnt& thePoint) const 69 { 70 thePoint.ChangeCoord() += myDirection.XYZ() * theShift; 71 } 72 73 private: 74 Handle(Geom_Curve) myBaseCurve; 75 Handle(Adaptor3d_HCurve) myBaseAdaptor; 76 77 gp_Dir myDirection; 78 }; 79 80 DEFINE_STANDARD_HANDLE(GeomEvaluator_SurfaceOfExtrusion, GeomEvaluator_Surface) 81 82 83 #endif // _GeomEvaluator_SurfaceOfExtrusion_HeaderFile 84