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93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
// Created on: 1997-10-22
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// Created by: Philippe MANGIN / Sergey SOKOLOV
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// Copyright (c) 1997-1999 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 _PLib_Base_HeaderFile
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#define _PLib_Base_HeaderFile
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#include <Standard.hxx>
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#include <Standard_Type.hxx>
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#include <Standard_Transient.hxx>
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#include <Standard_Integer.hxx>
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#include <TColStd_Array1OfReal.hxx>
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#include <Standard_Real.hxx>
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class PLib_Base;
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DEFINE_STANDARD_HANDLE(PLib_Base, Standard_Transient)
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//! To work with different polynomial's Bases
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class PLib_Base : public Standard_Transient
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{
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public:
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//! Convert the polynomial P(t) in the canonical base.
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Standard_EXPORT virtual void ToCoefficients (const Standard_Integer Dimension, const Standard_Integer Degree, const TColStd_Array1OfReal& CoeffinBase, TColStd_Array1OfReal& Coefficients) const = 0;
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//! Compute the values of the basis functions in u
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Standard_EXPORT virtual void D0 (const Standard_Real U, TColStd_Array1OfReal& BasisValue) = 0;
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//! Compute the values and the derivatives values of
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//! the basis functions in u
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Standard_EXPORT virtual void D1 (const Standard_Real U, TColStd_Array1OfReal& BasisValue, TColStd_Array1OfReal& BasisD1) = 0;
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//! Compute the values and the derivatives values of
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//! the basis functions in u
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Standard_EXPORT virtual void D2 (const Standard_Real U, TColStd_Array1OfReal& BasisValue, TColStd_Array1OfReal& BasisD1, TColStd_Array1OfReal& BasisD2) = 0;
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//! Compute the values and the derivatives values of
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//! the basis functions in u
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Standard_EXPORT virtual void D3 (const Standard_Real U, TColStd_Array1OfReal& BasisValue, TColStd_Array1OfReal& BasisD1, TColStd_Array1OfReal& BasisD2, TColStd_Array1OfReal& BasisD3) = 0;
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//! returns WorkDegree
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Standard_EXPORT virtual Standard_Integer WorkDegree() const = 0;
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//! Compute NewDegree <= MaxDegree so that MaxError is lower
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//! than Tol.
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//! MaxError can be greater than Tol if it is not possible
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//! to find a NewDegree <= MaxDegree.
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//! In this case NewDegree = MaxDegree
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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;
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DEFINE_STANDARD_RTTIEXT(PLib_Base,Standard_Transient)
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protected:
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private:
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};
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#endif // _PLib_Base_HeaderFile
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