randomizer.h

Go to the documentation of this file.

/**
 * PANDA 3D SOFTWARE
 * Copyright (c) Carnegie Mellon University.  All rights reserved.
 *
 * All use of this software is subject to the terms of the revised BSD
 * license.  You should have received a copy of this license along
 * with this source code in a file named "LICENSE."
 *
 * @file randomizer.h
 * @author drose
 * @date 2007-01-18
 */
 
#ifndef RANDOMIZER_H
#define RANDOMIZER_H
 
#include "pandabase.h"
#include "mersenne.h"
 
#include <time.h>
#include <math.h>
 
/**
 * A handy class to return random numbers.
 */
class EXPCL_PANDA_MATHUTIL Randomizer {
PUBLISHED:
  INLINE explicit Randomizer(unsigned long seed = 0);
  INLINE Randomizer(const Randomizer &copy);
  INLINE void operator = (const Randomizer &copy);
 
  INLINE int random_int(int range);
  INLINE double random_real(double range);
  INLINE double random_real_unit();
 
  INLINE static unsigned long get_next_seed();
  INLINE unsigned long get_seed();
 
private:
  Mersenne _mersenne;
  static Mersenne _next_seed;
  static bool _got_first_seed;
};
 
#include "randomizer.I"
 
#endif