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86 lines
3.2 KiB
C++
86 lines
3.2 KiB
C++
// Created on: 1992-08-28
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// Created by: Remi LEQUETTE
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// Copyright (c) 1992-1999 Matra Datavision
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// Copyright (c) 1999-2014 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 _Geom2dEvaluator_HeaderFile
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#define _Geom2dEvaluator_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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class gp_Pnt2d;
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class gp_Vec2d;
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//! The Geom2dEvaluator package provides utilities for .
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//! calculating value and derivatives of offset curve
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//! using corresponding values of base curve
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class Geom2dEvaluator
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Recalculate D1 values of base curve into D0 value of offset curve
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Standard_EXPORT static void CalculateD0(gp_Pnt2d& theValue,
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const gp_Vec2d& theD1, const Standard_Real theOffset);
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//! Recalculate D2 values of base curve into D1 values of offset curve
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Standard_EXPORT static void CalculateD1(gp_Pnt2d& theValue,
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gp_Vec2d& theD1,
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const gp_Vec2d& theD2, const Standard_Real theOffset);
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//! Recalculate D3 values of base curve into D2 values of offset curve
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Standard_EXPORT static void CalculateD2(gp_Pnt2d& theValue,
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gp_Vec2d& theD1,
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gp_Vec2d& theD2,
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const gp_Vec2d& theD3, const Standard_Boolean theIsDirChange,
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const Standard_Real theOffset);
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//! Recalculate D3 values of base curve into D3 values of offset curve
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Standard_EXPORT static void CalculateD3(gp_Pnt2d& theValue,
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gp_Vec2d& theD1,
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gp_Vec2d& theD2,
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gp_Vec2d& theD3,
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const gp_Vec2d& theD4, const Standard_Boolean theIsDirChange,
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const Standard_Real theOffset);
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//! Recalculate derivatives in the singular point
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//! Returns true if the direction of derivatives is changed
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Standard_EXPORT static Standard_Boolean AdjustDerivative(const Standard_Integer theMaxDerivative,
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const Standard_Real theU,
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gp_Vec2d& theD1,
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gp_Vec2d& theD2,
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gp_Vec2d& theD3,
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gp_Vec2d& theD4);
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protected:
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private:
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};
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#endif // _Geom2dEvaluator_HeaderFile
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