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42cf5bc1ca
Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl": - WOK-generated header files from inc and sources from drv are moved to src - CDL files removed - All packages are converted to nocdlpack
148 lines
5.8 KiB
C++
148 lines
5.8 KiB
C++
// Created on: 1991-10-10
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// Created by: Jean Claude VAUTHIER
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// Copyright (c) 1991-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _Convert_ConicToBSplineCurve_HeaderFile
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#define _Convert_ConicToBSplineCurve_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <Standard_Handle.hxx>
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#include <TColgp_HArray1OfPnt2d.hxx>
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#include <TColStd_HArray1OfReal.hxx>
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#include <TColStd_HArray1OfInteger.hxx>
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#include <Standard_Integer.hxx>
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#include <Standard_Boolean.hxx>
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#include <Standard_Real.hxx>
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#include <Convert_ParameterisationType.hxx>
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class Standard_OutOfRange;
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class Standard_ConstructionError;
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class gp_Pnt2d;
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//! Root class for algorithms which convert a conic curve into
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//! a BSpline curve (CircleToBSplineCurve, EllipseToBSplineCurve,
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//! HyperbolaToBSplineCurve, ParabolaToBSplineCurve).
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//! These algorithms all work on 2D curves from the gp
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//! package and compute all the data needed to construct a
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//! BSpline curve equivalent to the conic curve. This data consists of:
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//! - the degree of the curve,
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//! - the periodic characteristics of the curve,
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//! - a poles table with associated weights,
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//! - a knots table with associated multiplicities.
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//! The abstract class ConicToBSplineCurve provides a
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//! framework for storing and consulting this computed data.
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//! The data may then be used to construct a
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//! Geom2d_BSplineCurve curvSuper class of the following classes :
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//! This abstract class implements the methods to get the geometric
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//! representation of the B-spline curve equivalent to the conic.
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//! The B-spline is computed at the creation time in the sub classes.
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//! The B-spline curve is defined with its degree, its control points
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//! (Poles), its weights, its knots and their multiplicity.
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//! All the geometric entities used in this package are defined in 2D
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//! space.
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//! KeyWords :
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//! Convert, Conic, BSplineCurve, 2D.
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class Convert_ConicToBSplineCurve
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Returns the degree of the BSpline curve whose data is
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//! computed in this framework.
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Standard_EXPORT Standard_Integer Degree() const;
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//! Returns the number of poles of the BSpline curve whose
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//! data is computed in this framework.
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Standard_EXPORT Standard_Integer NbPoles() const;
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//! Returns the number of knots of the BSpline curve whose
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//! data is computed in this framework.
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Standard_EXPORT Standard_Integer NbKnots() const;
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//! Returns true if the BSpline curve whose data is computed in
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//! this framework is periodic.
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Standard_EXPORT Standard_Boolean IsPeriodic() const;
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//! Returns the pole of index Index to the poles table of the
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//! BSpline curve whose data is computed in this framework.
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//! Exceptions
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//! Standard_OutOfRange if Index is outside the bounds of
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//! the poles table of the BSpline curve whose data is computed in this framework.
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Standard_EXPORT gp_Pnt2d Pole (const Standard_Integer Index) const;
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//! Returns the weight of the pole of index Index to the poles
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//! table of the BSpline curve whose data is computed in this framework.
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//! Exceptions
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//! Standard_OutOfRange if Index is outside the bounds of
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//! the poles table of the BSpline curve whose data is computed in this framework.
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Standard_EXPORT Standard_Real Weight (const Standard_Integer Index) const;
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//! Returns the knot of index Index to the knots table of the
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//! BSpline curve whose data is computed in this framework.
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//! Exceptions
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//! Standard_OutOfRange if Index is outside the bounds of
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//! the knots table of the BSpline curve whose data is computed in this framework.
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Standard_EXPORT Standard_Real Knot (const Standard_Integer Index) const;
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//! Returns the multiplicity of the knot of index Index to the
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//! knots table of the BSpline curve whose data is computed in this framework.
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//! Exceptions
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//! Standard_OutOfRange if Index is outside the bounds of
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//! the knots table of the BSpline curve whose data is computed in this framework.
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Standard_EXPORT Standard_Integer Multiplicity (const Standard_Integer Index) const;
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Standard_EXPORT void BuildCosAndSin (const Convert_ParameterisationType Parametrisation, Handle(TColStd_HArray1OfReal)& CosNumerator, Handle(TColStd_HArray1OfReal)& SinNumerator, Handle(TColStd_HArray1OfReal)& Denominator, Standard_Integer& Degree, Handle(TColStd_HArray1OfReal)& Knots, Handle(TColStd_HArray1OfInteger)& Mults) const;
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Standard_EXPORT void BuildCosAndSin (const Convert_ParameterisationType Parametrisation, const Standard_Real UFirst, const Standard_Real ULast, Handle(TColStd_HArray1OfReal)& CosNumerator, Handle(TColStd_HArray1OfReal)& SinNumerator, Handle(TColStd_HArray1OfReal)& Denominator, Standard_Integer& Degree, Handle(TColStd_HArray1OfReal)& Knots, Handle(TColStd_HArray1OfInteger)& Mults) const;
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protected:
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Standard_EXPORT Convert_ConicToBSplineCurve(const Standard_Integer NumberOfPoles, const Standard_Integer NumberOfKnots, const Standard_Integer Degree);
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Handle(TColgp_HArray1OfPnt2d) poles;
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Handle(TColStd_HArray1OfReal) weights;
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Handle(TColStd_HArray1OfReal) knots;
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Handle(TColStd_HArray1OfInteger) mults;
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Standard_Integer degree;
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Standard_Integer nbPoles;
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Standard_Integer nbKnots;
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Standard_Boolean isperiodic;
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private:
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};
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#endif // _Convert_ConicToBSplineCurve_HeaderFile
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