0025679: Visualization, TKOpenGl - View frustum culling clips wrong objects

[occt.git] / src / math / math_IntegerRandom.cxx

// Copyright (c) 1997-1999 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.

#include <math_IntegerRandom.ixx>

#include <math_Recipes.hxx>

math_IntegerRandom::math_IntegerRandom(const Standard_Integer Lower, 
                                        const Standard_Integer Upper) {

   Low = Lower;
   Up = Upper;
   Dummy=-1;
   Random2(Dummy);
 }

void math_IntegerRandom::Reset() {
 
  Dummy=-1;
  Random2(Dummy);
}

Standard_Integer math_IntegerRandom::Next() {

  Standard_Real value=Random2(Dummy);
  Standard_Integer Result=(Standard_Integer)(Standard_Real((Up-Low))*value + Low);
  return (Result) ;
}