// Created on: 1998-09-23
// Created by: Philippe MANGIN
// Copyright (c) 1998-1999 Matra Datavision
// Copyright (c) 1999-2012 OPEN CASCADE SAS
//
// The content of this file is subject to the Open CASCADE Technology Public
// License Version 6.5 (the "License"). You may not use the content of this file
// except in compliance with the License. Please obtain a copy of the License
// at http://www.opencascade.org and read it completely before using this file.
//
// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
//
// The Original Code and all software distributed under the License is
// distributed on an "AS IS" basis, without warranty of any kind, and the
// Initial Developer hereby disclaims all such warranties, including without
// limitation, any warranties of merchantability, fitness for a particular
// purpose or non-infringement. Please see the License for the specific terms
// and conditions governing the rights and limitations under the License.



#include <GeomLib_LogSample.ixx>

#include <Standard_OutOfRange.hxx>


GeomLib_LogSample::GeomLib_LogSample(const Standard_Real A,
				      const Standard_Real B,
				      const Standard_Integer N)
                   :math_FunctionSample(A, B, N)
{
  myF = A - 1;
  myexp = Log(B-A)/N;
}

Standard_Real GeomLib_LogSample::GetParameter(const Standard_Integer Index) const
{
  Standard_Integer aN = NbPoints();
 

  if ((Index >= aN) || (Index <= 1)) {
    Standard_Real aA, aB;
    Bounds(aA, aB);
    if (Index == 1) return aA;
    else if (Index == aN) return aB;
    else Standard_OutOfRange::Raise("GeomLib_LogSample::GetParameter");
  }

  Standard_Real v = myF + Exp(myexp*Index);
  return v;
}