mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-04-07 18:30:55 +03:00
118 lines
5.3 KiB
C++
118 lines
5.3 KiB
C++
// Created on: 2015-09-21
|
|
// Copyright (c) 2015 OPEN CASCADE SAS
|
|
//
|
|
// This file is part of Open CASCADE Technology software library.
|
|
//
|
|
// This library is free software; you can redistribute it and/or modify it under
|
|
// the terms of the GNU Lesser General Public License version 2.1 as published
|
|
// by the Free Software Foundation, with special exception defined in the file
|
|
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
|
|
// distribution for complete text of the license and disclaimer of any warranty.
|
|
//
|
|
// Alternatively, this file may be used under the terms of Open CASCADE
|
|
// commercial license or contractual agreement.
|
|
|
|
#ifndef _Geom2dEvaluator_OffsetCurve_HeaderFile
|
|
#define _Geom2dEvaluator_OffsetCurve_HeaderFile
|
|
|
|
#include <Geom2d_Curve.hxx>
|
|
#include <Geom2dEvaluator_Curve.hxx>
|
|
|
|
class Geom2dAdaptor_HCurve;
|
|
|
|
//! Allows to calculate values and derivatives for offset curves in 2D
|
|
class Geom2dEvaluator_OffsetCurve : public Geom2dEvaluator_Curve
|
|
{
|
|
public:
|
|
//! Initialize evaluator by curve
|
|
Standard_EXPORT Geom2dEvaluator_OffsetCurve(
|
|
const Handle(Geom2d_Curve)& theBase,
|
|
const Standard_Real theOffset);
|
|
//! Initialize evaluator by curve adaptor
|
|
Standard_EXPORT Geom2dEvaluator_OffsetCurve(
|
|
const Handle(Geom2dAdaptor_HCurve)& theBase,
|
|
const Standard_Real theOffset);
|
|
|
|
//! Change the offset value
|
|
void SetOffsetValue(Standard_Real theOffset)
|
|
{ myOffset = theOffset; }
|
|
|
|
//! Value of curve
|
|
Standard_EXPORT void D0(const Standard_Real theU,
|
|
gp_Pnt2d& theValue) const Standard_OVERRIDE;
|
|
//! Value and first derivatives of curve
|
|
Standard_EXPORT void D1(const Standard_Real theU,
|
|
gp_Pnt2d& theValue, gp_Vec2d& theD1) const Standard_OVERRIDE;
|
|
//! Value, first and second derivatives of curve
|
|
Standard_EXPORT void D2(const Standard_Real theU,
|
|
gp_Pnt2d& theValue, gp_Vec2d& theD1, gp_Vec2d& theD2) const Standard_OVERRIDE;
|
|
//! Value, first, second and third derivatives of curve
|
|
Standard_EXPORT void D3(const Standard_Real theU,
|
|
gp_Pnt2d& theValue, gp_Vec2d& theD1,
|
|
gp_Vec2d& theD2, gp_Vec2d& theD3) const Standard_OVERRIDE;
|
|
//! Calculates N-th derivatives of curve, where N = theDeriv. Raises if N < 1
|
|
Standard_EXPORT gp_Vec2d DN(const Standard_Real theU,
|
|
const Standard_Integer theDeriv) const Standard_OVERRIDE;
|
|
|
|
DEFINE_STANDARD_RTTIEXT(Geom2dEvaluator_OffsetCurve,Geom2dEvaluator_Curve)
|
|
|
|
private:
|
|
//! Recalculate D1 values of base curve into D0 value of offset curve
|
|
void CalculateD0( gp_Pnt2d& theValue,
|
|
const gp_Vec2d& theD1) const;
|
|
//! Recalculate D2 values of base curve into D1 values of offset curve
|
|
void CalculateD1( gp_Pnt2d& theValue,
|
|
gp_Vec2d& theD1,
|
|
const gp_Vec2d& theD2) const;
|
|
//! Recalculate D3 values of base curve into D2 values of offset curve
|
|
void CalculateD2( gp_Pnt2d& theValue,
|
|
gp_Vec2d& theD1,
|
|
gp_Vec2d& theD2,
|
|
const gp_Vec2d& theD3,
|
|
const Standard_Boolean theIsDirChange) const;
|
|
//! Recalculate D3 values of base curve into D3 values of offset curve
|
|
void CalculateD3( gp_Pnt2d& theValue,
|
|
gp_Vec2d& theD1,
|
|
gp_Vec2d& theD2,
|
|
gp_Vec2d& theD3,
|
|
const gp_Vec2d& theD4,
|
|
const Standard_Boolean theIsDirChange) const;
|
|
|
|
//! Calculate value of base curve/adaptor
|
|
void BaseD0(const Standard_Real theU, gp_Pnt2d& theValue) const;
|
|
//! Calculate value and first derivatives of base curve/adaptor
|
|
void BaseD1(const Standard_Real theU,
|
|
gp_Pnt2d& theValue, gp_Vec2d& theD1) const;
|
|
//! Calculate value, first and second derivatives of base curve/adaptor
|
|
void BaseD2(const Standard_Real theU,
|
|
gp_Pnt2d& theValue, gp_Vec2d& theD1, gp_Vec2d& theD2) const;
|
|
//! Calculate value, first, second and third derivatives of base curve/adaptor
|
|
void BaseD3(const Standard_Real theU,
|
|
gp_Pnt2d& theValue, gp_Vec2d& theD1, gp_Vec2d& theD2, gp_Vec2d& theD3) const;
|
|
//! Calculate value and derivatives till 4th of base curve/adaptor
|
|
void BaseD4(const Standard_Real theU,
|
|
gp_Pnt2d& theValue, gp_Vec2d& theD1, gp_Vec2d& theD2, gp_Vec2d& theD3, gp_Vec2d& theD4) const;
|
|
//! Calculate N-th derivative of base curve/adaptor
|
|
gp_Vec2d BaseDN(const Standard_Real theU, const Standard_Integer theDeriv) const;
|
|
|
|
// Recalculate derivatives in the singular point
|
|
// Returns true if the direction of derivatives is changed
|
|
Standard_Boolean AdjustDerivative(const Standard_Integer theMaxDerivative,
|
|
const Standard_Real theU,
|
|
gp_Vec2d& theD1,
|
|
gp_Vec2d& theD2,
|
|
gp_Vec2d& theD3,
|
|
gp_Vec2d& theD4) const;
|
|
|
|
private:
|
|
Handle(Geom2d_Curve) myBaseCurve;
|
|
Handle(Geom2dAdaptor_HCurve) myBaseAdaptor;
|
|
|
|
Standard_Real myOffset; ///< offset value
|
|
};
|
|
|
|
DEFINE_STANDARD_HANDLE(Geom2dEvaluator_OffsetCurve, Geom2dEvaluator_Curve)
|
|
|
|
|
|
#endif // _Geom2dEvaluator_OffsetCurve_HeaderFile
|