// Created on: 1998-07-14
// Created by: data exchange team
// Copyright (c) 1998-1999 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 _ShapeConstruct_Curve_HeaderFile
#define _ShapeConstruct_Curve_HeaderFile
#include
#include
#include
#include
#include
#include
#include
class Geom_Curve;
class gp_Pnt;
class Geom2d_Curve;
class gp_Pnt2d;
class Geom_BSplineCurve;
class Geom2d_BSplineCurve;
//! Adjusts curve to have start and end points at the given
//! points (currently works on lines and B-Splines only)
class ShapeConstruct_Curve
{
public:
DEFINE_STANDARD_ALLOC
//! Modifies a curve in order to make its bounds confused with
//! given points.
//! Works only on lines and B-Splines, returns True in this case,
//! else returns False.
//! For line considers both bounding points, for B-Splines only
//! specified.
//!
//! Warning : Does not check if curve should be reversed
Standard_EXPORT Standard_Boolean AdjustCurve (const Handle(Geom_Curve)& C3D, const gp_Pnt& P1, const gp_Pnt& P2, const Standard_Boolean take1 = Standard_True, const Standard_Boolean take2 = Standard_True) const;
//! Modifies a curve in order to make its bounds confused with
//! given points.
//! Works only on lines and B-Splines.
//!
//! For lines works as previous method, B-Splines are segmented
//! at the given values and then are adjusted to the points.
Standard_EXPORT Standard_Boolean AdjustCurveSegment (const Handle(Geom_Curve)& C3D, const gp_Pnt& P1, const gp_Pnt& P2, const Standard_Real U1, const Standard_Real U2) const;
//! Modifies a curve in order to make its bounds confused with
//! given points.
//! Works only on lines and B-Splines, returns True in this case,
//! else returns False.
//!
//! For line considers both bounding points, for B-Splines only
//! specified.
//!
//! Warning : Does not check if curve should be reversed
Standard_EXPORT Standard_Boolean AdjustCurve2d (const Handle(Geom2d_Curve)& C2D, const gp_Pnt2d& P1, const gp_Pnt2d& P2, const Standard_Boolean take1 = Standard_True, const Standard_Boolean take2 = Standard_True) const;
//! Converts a curve of any type (only part from first to last)
//! to bspline. The method of conversion depends on the type
//! of original curve:
//! BSpline -> C.Segment(first,last)
//! Bezier and Line -> GeomConvert::CurveToBSplineCurve(C).Segment(first,last)
//! Conic and Other -> Approx_Curve3d(C[first,last],prec,C1,9,1000)
Standard_EXPORT Handle(Geom_BSplineCurve) ConvertToBSpline (const Handle(Geom_Curve)& C, const Standard_Real first, const Standard_Real last, const Standard_Real prec) const;
//! Converts a curve of any type (only part from first to last)
//! to bspline. The method of conversion depends on the type
//! of original curve:
//! BSpline -> C.Segment(first,last)
//! Bezier and Line -> GeomConvert::CurveToBSplineCurve(C).Segment(first,last)
//! Conic and Other -> Approx_Curve2d(C[first,last],prec,C1,9,1000)
Standard_EXPORT Handle(Geom2d_BSplineCurve) ConvertToBSpline (const Handle(Geom2d_Curve)& C, const Standard_Real first, const Standard_Real last, const Standard_Real prec) const;
Standard_EXPORT static Standard_Boolean FixKnots (Handle(TColStd_HArray1OfReal)& knots);
//! Fix bspline knots to ensure that there is enough
//! gap between neighbouring values
//! Returns True if something fixed (by shifting knot)
Standard_EXPORT static Standard_Boolean FixKnots (TColStd_Array1OfReal& knots);
protected:
private:
};
#endif // _ShapeConstruct_Curve_HeaderFile