include/opencascade/PLib_Base.hxx

0001 // Created on: 1997-10-22
0002 // Created by: Philippe MANGIN / Sergey SOKOLOV
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 _PLib_Base_HeaderFile
0018 #define _PLib_Base_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_Type.hxx>
0022
0023 #include <Standard_Transient.hxx>
0024 #include <Standard_Integer.hxx>
0025 #include <TColStd_Array1OfReal.hxx>
0026 #include <Standard_Real.hxx>
0027
0028
0029 class PLib_Base;
0030 DEFINE_STANDARD_HANDLE(PLib_Base, Standard_Transient)
0031
0032 //! To work with different polynomial's Bases
0033 class PLib_Base : public Standard_Transient
0034 {
0035
0036 public:
0037
0038
0039
0040   //! Convert the polynomial P(t) in the canonical base.
0041   Standard_EXPORT virtual void ToCoefficients (const Standard_Integer Dimension, const Standard_Integer Degree, const TColStd_Array1OfReal& CoeffinBase, TColStd_Array1OfReal& Coefficients) const = 0;
0042
0043   //! Compute the values of the basis functions in u
0044   Standard_EXPORT virtual void D0 (const Standard_Real U, TColStd_Array1OfReal& BasisValue) = 0;
0045
0046   //! Compute the values and the derivatives values of
0047   //! the basis functions in u
0048   Standard_EXPORT virtual void D1 (const Standard_Real U, TColStd_Array1OfReal& BasisValue, TColStd_Array1OfReal& BasisD1) = 0;
0049
0050   //! Compute the values and the derivatives values of
0051   //! the basis functions in u
0052   Standard_EXPORT virtual void D2 (const Standard_Real U, TColStd_Array1OfReal& BasisValue, TColStd_Array1OfReal& BasisD1, TColStd_Array1OfReal& BasisD2) = 0;
0053
0054   //! Compute the values and the derivatives values of
0055   //! the basis functions in u
0056   Standard_EXPORT virtual void D3 (const Standard_Real U, TColStd_Array1OfReal& BasisValue, TColStd_Array1OfReal& BasisD1, TColStd_Array1OfReal& BasisD2, TColStd_Array1OfReal& BasisD3) = 0;
0057
0058   //! returns WorkDegree
0059   Standard_EXPORT virtual Standard_Integer WorkDegree() const = 0;
0060
0061
0062   //! Compute NewDegree <= MaxDegree so that MaxError is lower
0063   //! than Tol.
0064   //! MaxError can be greater than Tol if it is not possible
0065   //! to find a NewDegree <= MaxDegree.
0066   //! In this case NewDegree = MaxDegree
0067   Standard_EXPORT virtual void ReduceDegree (const Standard_Integer Dimension, const Standard_Integer MaxDegree, const Standard_Real Tol, Standard_Real& BaseCoeff, Standard_Integer& NewDegree, Standard_Real& MaxError) const = 0;
0068
0069
0070
0071
0072   DEFINE_STANDARD_RTTIEXT(PLib_Base,Standard_Transient)
0073
0074 protected:
0075
0076
0077
0078
0079 private:
0080
0081
0082
0083
0084 };
0085
0086
0087
0088
0089
0090
0091
0092 #endif // _PLib_Base_HeaderFile