OCCT

// Created on: 1991-07-17
// Created by: Isabelle GRIGNON
// Copyright (c) 1991-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#ifndef _math_FunctionSample_HeaderFile
#define _math_FunctionSample_HeaderFile

#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Handle.hxx>

#include <Standard_Real.hxx>

//! This class gives a default sample (constant difference
//! of parameter) for a function defined between
//! two bound A,B.
class math_FunctionSample
{
public:
  DEFINE_STANDARD_ALLOC

  Standard_EXPORT math_FunctionSample(const double A, const double B, const int N);

  //! Returns the bounds of parameters.
  Standard_EXPORT virtual void Bounds(double& A, double& B) const;

  //! Returns the number of sample points.
  Standard_EXPORT int NbPoints() const;

  //! Returns the value of parameter of the point of
  //! range Index : A + ((Index-1)/(NbPoints-1))*B.
  //! An exception is raised if Index<=0 or Index>NbPoints.
  Standard_EXPORT virtual double GetParameter(const int Index) const;

private:
  double a;
  double b;
  int    n;
};

#endif // _math_FunctionSample_HeaderFile