include/opencascade/FEmTool_Curve.hxx

0001 // Created on: 1997-09-12
0002 // Created by: Philippe MANGIN
0003 // Copyright (c) 1997-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _FEmTool_Curve_HeaderFile
0018 #define _FEmTool_Curve_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_Type.hxx>
0022
0023 #include <Standard_Integer.hxx>
0024 #include <TColStd_HArray1OfReal.hxx>
0025 #include <TColStd_Array1OfInteger.hxx>
0026 #include <TColStd_Array1OfReal.hxx>
0027 #include <Standard_Real.hxx>
0028 #include <Standard_Transient.hxx>
0029 #include <TColStd_Array2OfReal.hxx>
0030 class PLib_Base;
0031
0032 class FEmTool_Curve;
0033 DEFINE_STANDARD_HANDLE(FEmTool_Curve, Standard_Transient)
0034
0035 //! Curve defined by Polynomial Elements.
0036 class FEmTool_Curve : public Standard_Transient
0037 {
0038
0039 public:
0040   Standard_EXPORT FEmTool_Curve(const Standard_Integer   Dimension,
0041                                 const Standard_Integer   NbElements,
0042                                 const Handle(PLib_Base)& TheBase,
0043                                 const Standard_Real      Tolerance);
0044
0045   Standard_EXPORT TColStd_Array1OfReal& Knots() const;
0046
0047   Standard_EXPORT void SetElement(const Standard_Integer      IndexOfElement,
0048                                   const TColStd_Array2OfReal& Coeffs);
0049
0050   Standard_EXPORT void D0(const Standard_Real U, TColStd_Array1OfReal& Pnt);
0051
0052   Standard_EXPORT void D1(const Standard_Real U, TColStd_Array1OfReal& Vec);
0053
0054   Standard_EXPORT void D2(const Standard_Real U, TColStd_Array1OfReal& Vec);
0055
0056   Standard_EXPORT void Length(const Standard_Real FirstU,
0057                               const Standard_Real LastU,
0058                               Standard_Real&      Length);
0059
0060   Standard_EXPORT void GetElement(const Standard_Integer IndexOfElement,
0061                                   TColStd_Array2OfReal&  Coeffs);
0062
0063   //! returns  coefficients  of  all  elements  in  canonical  base.
0064   Standard_EXPORT void GetPolynom(TColStd_Array1OfReal& Coeffs);
0065
0066   Standard_EXPORT Standard_Integer NbElements() const;
0067
0068   Standard_EXPORT Standard_Integer Dimension() const;
0069
0070   Standard_EXPORT Handle(PLib_Base) Base() const;
0071
0072   Standard_EXPORT Standard_Integer Degree(const Standard_Integer IndexOfElement) const;
0073
0074   Standard_EXPORT void SetDegree(const Standard_Integer IndexOfElement,
0075                                  const Standard_Integer Degree);
0076
0077   Standard_EXPORT void ReduceDegree(const Standard_Integer IndexOfElement,
0078                                     const Standard_Real    Tol,
0079                                     Standard_Integer&      NewDegree,
0080                                     Standard_Real&         MaxError);
0081
0082   DEFINE_STANDARD_RTTIEXT(FEmTool_Curve, Standard_Transient)
0083
0084 protected:
0085 private:
0086   Standard_EXPORT void Update(const Standard_Integer Element, const Standard_Integer Order);
0087
0088   Standard_Integer              myNbElements;
0089   Standard_Integer              myDimension;
0090   Handle(PLib_Base)             myBase;
0091   Handle(TColStd_HArray1OfReal) myKnots;
0092   TColStd_Array1OfInteger       myDegree;
0093   TColStd_Array1OfReal          myCoeff;
0094   TColStd_Array1OfReal          myPoly;
0095   TColStd_Array1OfReal          myDeri;
0096   TColStd_Array1OfReal          myDsecn;
0097   TColStd_Array1OfInteger       HasPoly;
0098   TColStd_Array1OfInteger       HasDeri;
0099   TColStd_Array1OfInteger       HasSecn;
0100   TColStd_Array1OfReal          myLength;
0101   Standard_Real                 Uf;
0102   Standard_Real                 Ul;
0103   Standard_Real                 Denom;
0104   Standard_Real                 USum;
0105   Standard_Integer              myIndex;
0106   Standard_Integer              myPtr;
0107 };
0108
0109 #endif // _FEmTool_Curve_HeaderFile