126 lines
6.0 KiB
C++
126 lines
6.0 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 _GeomEvaluator_OffsetCurve_HeaderFile
|
|
#define _GeomEvaluator_OffsetCurve_HeaderFile
|
|
|
|
#include "GeomAdaptor_Curve.hxx"
|
|
#include "GeomEvaluator_Curve.hxx"
|
|
#include "gp_Dir.hxx"
|
|
|
|
//! Allows to calculate values and derivatives for offset curves in 3D
|
|
class GeomEvaluator_OffsetCurve : public GeomEvaluator_Curve
|
|
{
|
|
public:
|
|
//! Initialize evaluator by curve
|
|
Standard_EXPORT GeomEvaluator_OffsetCurve(const Handle(Geom_Curve)& theBase,
|
|
const Standard_Real theOffset,
|
|
const gp_Dir& theDirection);
|
|
//! Initialize evaluator by curve adaptor
|
|
Standard_EXPORT GeomEvaluator_OffsetCurve(const Handle(GeomAdaptor_Curve)& theBase,
|
|
const Standard_Real theOffset,
|
|
const gp_Dir& theDirection);
|
|
|
|
//! Change the offset value
|
|
void SetOffsetValue(Standard_Real theOffset) { myOffset = theOffset; }
|
|
|
|
void SetOffsetDirection(const gp_Dir& theDirection) { myOffsetDir = theDirection; }
|
|
|
|
//! Value of curve
|
|
Standard_EXPORT void D0(const Standard_Real theU, gp_Pnt& theValue) const Standard_OVERRIDE;
|
|
//! Value and first derivatives of curve
|
|
Standard_EXPORT void D1(const Standard_Real theU,
|
|
gp_Pnt& theValue,
|
|
gp_Vec& theD1) const Standard_OVERRIDE;
|
|
//! Value, first and second derivatives of curve
|
|
Standard_EXPORT void D2(const Standard_Real theU,
|
|
gp_Pnt& theValue,
|
|
gp_Vec& theD1,
|
|
gp_Vec& theD2) const Standard_OVERRIDE;
|
|
//! Value, first, second and third derivatives of curve
|
|
Standard_EXPORT void D3(const Standard_Real theU,
|
|
gp_Pnt& theValue,
|
|
gp_Vec& theD1,
|
|
gp_Vec& theD2,
|
|
gp_Vec& theD3) const Standard_OVERRIDE;
|
|
//! Calculates N-th derivatives of curve, where N = theDeriv. Raises if N < 1
|
|
Standard_EXPORT gp_Vec DN(const Standard_Real theU,
|
|
const Standard_Integer theDeriv) const Standard_OVERRIDE;
|
|
|
|
Standard_EXPORT virtual Handle(GeomEvaluator_Curve) ShallowCopy() const Standard_OVERRIDE;
|
|
|
|
DEFINE_STANDARD_RTTIEXT(GeomEvaluator_OffsetCurve, GeomEvaluator_Curve)
|
|
|
|
private:
|
|
//! Recalculate D1 values of base curve into D0 value of offset curve
|
|
void CalculateD0(gp_Pnt& theValue, const gp_Vec& theD1) const;
|
|
//! Recalculate D2 values of base curve into D1 values of offset curve
|
|
void CalculateD1(gp_Pnt& theValue, gp_Vec& theD1, const gp_Vec& theD2) const;
|
|
//! Recalculate D3 values of base curve into D2 values of offset curve
|
|
void CalculateD2(gp_Pnt& theValue,
|
|
gp_Vec& theD1,
|
|
gp_Vec& theD2,
|
|
const gp_Vec& theD3,
|
|
const Standard_Boolean theIsDirChange) const;
|
|
//! Recalculate D3 values of base curve into D3 values of offset curve
|
|
void CalculateD3(gp_Pnt& theValue,
|
|
gp_Vec& theD1,
|
|
gp_Vec& theD2,
|
|
gp_Vec& theD3,
|
|
const gp_Vec& theD4,
|
|
const Standard_Boolean theIsDirChange) const;
|
|
|
|
//! Calculate value of base curve/adaptor
|
|
void BaseD0(const Standard_Real theU, gp_Pnt& theValue) const;
|
|
//! Calculate value and first derivatives of base curve/adaptor
|
|
void BaseD1(const Standard_Real theU, gp_Pnt& theValue, gp_Vec& theD1) const;
|
|
//! Calculate value, first and second derivatives of base curve/adaptor
|
|
void BaseD2(const Standard_Real theU, gp_Pnt& theValue, gp_Vec& theD1, gp_Vec& theD2) const;
|
|
//! Calculate value, first, second and third derivatives of base curve/adaptor
|
|
void BaseD3(const Standard_Real theU,
|
|
gp_Pnt& theValue,
|
|
gp_Vec& theD1,
|
|
gp_Vec& theD2,
|
|
gp_Vec& theD3) const;
|
|
//! Calculate value and derivatives till 4th of base curve/adaptor
|
|
void BaseD4(const Standard_Real theU,
|
|
gp_Pnt& theValue,
|
|
gp_Vec& theD1,
|
|
gp_Vec& theD2,
|
|
gp_Vec& theD3,
|
|
gp_Vec& theD4) const;
|
|
//! Calculate N-th derivative of base curve/adaptor
|
|
gp_Vec 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_Vec& theD1,
|
|
gp_Vec& theD2,
|
|
gp_Vec& theD3,
|
|
gp_Vec& theD4) const;
|
|
|
|
private:
|
|
Handle(Geom_Curve) myBaseCurve;
|
|
Handle(GeomAdaptor_Curve) myBaseAdaptor;
|
|
|
|
Standard_Real myOffset; ///< offset value
|
|
gp_Dir myOffsetDir; ///< offset direction
|
|
};
|
|
|
|
DEFINE_STANDARD_HANDLE(GeomEvaluator_OffsetCurve, GeomEvaluator_Curve)
|
|
|
|
#endif // _GeomEvaluator_OffsetCurve_HeaderFile
|