mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-04-04 18:06:22 +03:00
75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
// Created on: 1991-10-10
|
|
// Created by: Jean Claude VAUTHIER
|
|
// Copyright (c) 1991-1999 Matra Datavision
|
|
// Copyright (c) 1999-2014 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 _Convert_ParabolaToBSplineCurve_HeaderFile
|
|
#define _Convert_ParabolaToBSplineCurve_HeaderFile
|
|
|
|
#include <Standard.hxx>
|
|
#include <Standard_DefineAlloc.hxx>
|
|
#include <Standard_Handle.hxx>
|
|
|
|
#include <Convert_ConicToBSplineCurve.hxx>
|
|
class gp_Parab2d;
|
|
|
|
|
|
|
|
//! This algorithm converts a parabola into a non rational B-spline
|
|
//! curve.
|
|
//! The parabola is a Parab2d from package gp with the parametrization
|
|
//! P (U) = Loc + F * (U*U * Xdir + 2 * U * Ydir) where Loc is the
|
|
//! apex of the parabola, Xdir is the normalized direction of the
|
|
//! symmetry axis of the parabola, Ydir is the normalized direction of
|
|
//! the directrix and F is the focal length.
|
|
//! KeyWords :
|
|
//! Convert, Parabola, BSplineCurve, 2D .
|
|
class Convert_ParabolaToBSplineCurve : public Convert_ConicToBSplineCurve
|
|
{
|
|
public:
|
|
|
|
DEFINE_STANDARD_ALLOC
|
|
|
|
|
|
|
|
//! The parabola Prb is limited between the parametric values U1, U2
|
|
//! and the equivalent B-spline curve as the same orientation as the
|
|
//! parabola Prb.
|
|
Standard_EXPORT Convert_ParabolaToBSplineCurve(const gp_Parab2d& Prb, const Standard_Real U1, const Standard_Real U2);
|
|
|
|
|
|
|
|
|
|
protected:
|
|
|
|
|
|
|
|
|
|
|
|
private:
|
|
|
|
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#endif // _Convert_ParabolaToBSplineCurve_HeaderFile
|