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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 _Geom2dEvaluator_Curve_HeaderFile |
| 16 | #define _Geom2dEvaluator_Curve_HeaderFile |
| 17 | |
| 18 | #include <Standard_Transient.hxx> |
| 19 | #include <Standard_Type.hxx> |
| 20 | |
| 21 | class gp_Pnt2d; |
| 22 | class gp_Vec2d; |
| 23 | |
| 24 | //! Interface for calculation of values and derivatives for different kinds of curves in 2D. |
| 25 | //! Works both with adaptors and curves. |
| 26 | class Geom2dEvaluator_Curve : public Standard_Transient |
| 27 | { |
| 28 | public: |
| 29 | Geom2dEvaluator_Curve() {} |
| 30 | |
| 31 | //! Value of 2D curve |
| 32 | virtual void D0(const Standard_Real theU, |
| 33 | gp_Pnt2d& theValue) const = 0; |
| 34 | //! Value and first derivatives of curve |
| 35 | virtual void D1(const Standard_Real theU, |
| 36 | gp_Pnt2d& theValue, gp_Vec2d& theD1) const = 0; |
| 37 | //! Value, first and second derivatives of curve |
| 38 | virtual void D2(const Standard_Real theU, |
| 39 | gp_Pnt2d& theValue, gp_Vec2d& theD1, gp_Vec2d& theD2) const = 0; |
| 40 | //! Value, first, second and third derivatives of curve |
| 41 | virtual void D3(const Standard_Real theU, |
| 42 | gp_Pnt2d& theValue, gp_Vec2d& theD1, gp_Vec2d& theD2, gp_Vec2d& theD3) const = 0; |
| 43 | //! Calculates N-th derivatives of curve, where N = theDerU. Raises if N < 1 |
| 44 | virtual gp_Vec2d DN(const Standard_Real theU, |
| 45 | const Standard_Integer theDerU) const = 0; |
| 46 | |
| 47 | DEFINE_STANDARD_RTTI(Geom2dEvaluator_Curve, Standard_Transient) |
| 48 | }; |
| 49 | |
| 50 | DEFINE_STANDARD_HANDLE(Geom2dEvaluator_Curve, Standard_Transient) |
| 51 | |
| 52 | |
| 53 | #endif // _Geom2dEvaluator_Curve_HeaderFile |
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