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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 _GeomEvaluator_Surface_HeaderFile |
16 | #define _GeomEvaluator_Surface_HeaderFile |
17 | |
18 | #include <Standard_Transient.hxx> |
19 | #include <Standard_Type.hxx> |
20 | |
21 | class gp_Pnt; |
22 | class gp_Vec; |
23 | |
24 | //! Interface for calculation of values and derivatives for different kinds of surfaces. |
25 | //! Works both with adaptors and surfaces. |
26 | class GeomEvaluator_Surface : public Standard_Transient |
27 | { |
28 | public: |
29 | GeomEvaluator_Surface() {} |
30 | |
31 | //! Value of surface |
32 | virtual void D0(const Standard_Real theU, const Standard_Real theV, |
33 | gp_Pnt& theValue) const = 0; |
34 | //! Value and first derivatives of surface |
35 | virtual void D1(const Standard_Real theU, const Standard_Real theV, |
36 | gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V) const = 0; |
37 | //! Value, first and second derivatives of surface |
38 | virtual void D2(const Standard_Real theU, const Standard_Real theV, |
39 | gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, |
40 | gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV) const = 0; |
41 | //! Value, first, second and third derivatives of surface |
42 | virtual void D3(const Standard_Real theU, const Standard_Real theV, |
43 | gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V, |
44 | gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV, |
45 | gp_Vec& theD3U, gp_Vec& theD3V, gp_Vec& theD3UUV, gp_Vec& theD3UVV) const = 0; |
46 | //! Calculates N-th derivatives of surface, where N = theDerU + theDerV. |
47 | //! |
48 | //! Raises if N < 1 or theDerU < 0 or theDerV < 0 |
49 | virtual gp_Vec DN(const Standard_Real theU, const Standard_Real theV, |
50 | const Standard_Integer theDerU, const Standard_Integer theDerV) const = 0; |
51 | |
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52 | virtual Handle(GeomEvaluator_Surface) ShallowCopy() const = 0; |
53 | |
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54 | DEFINE_STANDARD_RTTI_INLINE(GeomEvaluator_Surface,Standard_Transient) |
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55 | }; |
56 | |
57 | DEFINE_STANDARD_HANDLE(GeomEvaluator_Surface, Standard_Transient) |
58 | |
59 | |
60 | #endif // _GeomEvaluator_Surface_HeaderFile |