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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
127 lines
4.1 KiB
C++
127 lines
4.1 KiB
C++
// Created on: 1991-07-17
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// Created by: Isabelle GRIGNON
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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 _math_FunctionAllRoots_HeaderFile
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#define _math_FunctionAllRoots_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 <Standard_Boolean.hxx>
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#include <TColStd_SequenceOfReal.hxx>
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#include <TColStd_SequenceOfInteger.hxx>
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#include <Standard_Real.hxx>
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#include <Standard_Integer.hxx>
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#include <Standard_OStream.hxx>
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class Standard_OutOfRange;
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class StdFail_NotDone;
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class Standard_NumericError;
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class math_FunctionWithDerivative;
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class math_FunctionSample;
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//! This algorithm uses a sample of the function to find
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//! all intervals on which the function is null, and afterwards
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//! uses the FunctionRoots algorithm to find the points
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//! where the function is null outside the "null intervals".
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//! Knowledge of the derivative is required.
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class math_FunctionAllRoots
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! The algorithm uses the sample to find intervals on which
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//! the function is null. An interval is found if, for at least
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//! two consecutive points of the sample, Ui and Ui+1, we get
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//! |F(Ui)|<=EpsNul and |F(Ui+1)|<=EpsNul. The real bounds of
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//! an interval are computed with the FunctionRoots.
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//! algorithm.
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//! Between two intervals, the roots of the function F are
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//! calculated using the FunctionRoots algorithm.
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Standard_EXPORT math_FunctionAllRoots(math_FunctionWithDerivative& F, const math_FunctionSample& S, const Standard_Real EpsX, const Standard_Real EpsF, const Standard_Real EpsNul);
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//! Returns True if the computation has been done successfully.
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Standard_Boolean IsDone() const;
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//! Returns the number of intervals on which the function
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//! is Null.
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//! An exception is raised if IsDone returns False.
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Standard_Integer NbIntervals() const;
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//! Returns the interval of parameter of range Index.
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//! An exception is raised if IsDone returns False;
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//! An exception is raised if Index<=0 or Index >Nbintervals.
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void GetInterval (const Standard_Integer Index, Standard_Real& A, Standard_Real& B) const;
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//! returns the State Number associated to the interval Index.
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//! An exception is raised if IsDone returns False;
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//! An exception is raised if Index<=0 or Index >Nbintervals.
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void GetIntervalState (const Standard_Integer Index, Standard_Integer& IFirst, Standard_Integer& ILast) const;
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//! returns the number of points where the function is Null.
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//! An exception is raised if IsDone returns False.
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Standard_Integer NbPoints() const;
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//! Returns the parameter of the point of range Index.
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//! An exception is raised if IsDone returns False;
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//! An exception is raised if Index<=0 or Index >NbPoints.
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Standard_Real GetPoint (const Standard_Integer Index) const;
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//! returns the State Number associated to the point Index.
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//! An exception is raised if IsDone returns False;
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//! An exception is raised if Index<=0 or Index >Nbintervals.
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Standard_Integer GetPointState (const Standard_Integer Index) const;
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//! Prints on the stream o information on the current state
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//! of the object.
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Standard_EXPORT void Dump (Standard_OStream& o) const;
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protected:
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private:
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Standard_Boolean done;
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TColStd_SequenceOfReal pdeb;
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TColStd_SequenceOfReal pfin;
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TColStd_SequenceOfReal piso;
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TColStd_SequenceOfInteger ideb;
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TColStd_SequenceOfInteger ifin;
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TColStd_SequenceOfInteger iiso;
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};
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#include <math_FunctionAllRoots.lxx>
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#endif // _math_FunctionAllRoots_HeaderFile
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