// Created on: 1997-09-11
// Created by: Roman BORISOV
// Copyright (c) 1997-1999 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 _Geom2dConvert_ApproxCurve_HeaderFile
#define _Geom2dConvert_ApproxCurve_HeaderFile
#include
#include
#include
#include
#include
#include
#include
#include
class Geom2d_BSplineCurve;
class Standard_OutOfRange;
class Geom2d_Curve;
class Adaptor2d_HCurve2d;
//! A framework to convert a 2D curve to a BSpline.
//! This is done by approximation within a given tolerance.
class Geom2dConvert_ApproxCurve
{
public:
DEFINE_STANDARD_ALLOC
//! Constructs an approximation framework defined by
//! - the 2D conic Curve
//! - the tolerance value Tol2d
//! - the degree of continuity Order
//! - the maximum number of segments allowed MaxSegments
//! - the highest degree MaxDegree which the
//! polynomial defining the BSpline is allowed to have.
Standard_EXPORT Geom2dConvert_ApproxCurve(const Handle(Geom2d_Curve)& Curve, const Standard_Real Tol2d, const GeomAbs_Shape Order, const Standard_Integer MaxSegments, const Standard_Integer MaxDegree);
//! Constructs an approximation framework defined by
//! - the 2D conic Curve
//! - the tolerance value Tol2d
//! - the degree of continuity Order
//! - the maximum number of segments allowed MaxSegments
//! - the highest degree MaxDegree which the
//! polynomial defining the BSpline is allowed to have.
Standard_EXPORT Geom2dConvert_ApproxCurve(const Handle(Adaptor2d_HCurve2d)& Curve, const Standard_Real Tol2d, const GeomAbs_Shape Order, const Standard_Integer MaxSegments, const Standard_Integer MaxDegree);
//! Returns the 2D BSpline curve resulting from the
//! approximation algorithm.
Standard_EXPORT Handle(Geom2d_BSplineCurve) Curve() const;
//! returns Standard_True if the approximation has
//! been done with within requiered tolerance
Standard_EXPORT Standard_Boolean IsDone() const;
//! returns Standard_True if the approximation did come out
//! with a result that is not NECESSARELY within the required tolerance
Standard_EXPORT Standard_Boolean HasResult() const;
//! Returns the greatest distance between a point on the
//! source conic and the BSpline curve resulting from the
//! approximation. (>0 when an approximation
//! has been done, 0 if no approximation)
Standard_EXPORT Standard_Real MaxError() const;
//! Print on the stream o information about the object
Standard_EXPORT void Dump (Standard_OStream& o) const;
protected:
private:
//! Converts a curve to B-spline
Standard_EXPORT void Approximate (const Handle(Adaptor2d_HCurve2d)& theCurve, const Standard_Real theTol3d, const GeomAbs_Shape theOrder, const Standard_Integer theMaxSegments, const Standard_Integer theMaxDegree);
Standard_Boolean myIsDone;
Standard_Boolean myHasResult;
Handle(Geom2d_BSplineCurve) myBSplCurve;
Standard_Real myMaxError;
};
#endif // _Geom2dConvert_ApproxCurve_HeaderFile