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59 lines
2.5 KiB
C++
59 lines
2.5 KiB
C++
// Created on: 2015-09-21
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// Copyright (c) 2015 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _GeomEvaluator_Surface_HeaderFile
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#define _GeomEvaluator_Surface_HeaderFile
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#include <Standard_Transient.hxx>
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#include <Standard_Type.hxx>
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class gp_Pnt;
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class gp_Vec;
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//! Interface for calculation of values and derivatives for different kinds of surfaces.
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//! Works both with adaptors and surfaces.
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class GeomEvaluator_Surface : public Standard_Transient
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{
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public:
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GeomEvaluator_Surface() {}
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//! Value of surface
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virtual void D0(const Standard_Real theU, const Standard_Real theV,
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gp_Pnt& theValue) const = 0;
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//! Value and first derivatives of surface
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virtual void D1(const Standard_Real theU, const Standard_Real theV,
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gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V) const = 0;
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//! Value, first and second derivatives of surface
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virtual void D2(const Standard_Real theU, const Standard_Real theV,
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gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V,
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gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV) const = 0;
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//! Value, first, second and third derivatives of surface
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virtual void D3(const Standard_Real theU, const Standard_Real theV,
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gp_Pnt& theValue, gp_Vec& theD1U, gp_Vec& theD1V,
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gp_Vec& theD2U, gp_Vec& theD2V, gp_Vec& theD2UV,
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gp_Vec& theD3U, gp_Vec& theD3V, gp_Vec& theD3UUV, gp_Vec& theD3UVV) const = 0;
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//! Calculates N-th derivatives of surface, where N = theDerU + theDerV.
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//!
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//! Raises if N < 1 or theDerU < 0 or theDerV < 0
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virtual gp_Vec DN(const Standard_Real theU, const Standard_Real theV,
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const Standard_Integer theDerU, const Standard_Integer theDerV) const = 0;
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DEFINE_STANDARD_RTTI_INLINE(GeomEvaluator_Surface,Standard_Transient)
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};
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DEFINE_STANDARD_HANDLE(GeomEvaluator_Surface, Standard_Transient)
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#endif // _GeomEvaluator_Surface_HeaderFile
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