/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2007 INRIA

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation;

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>

 */

#include "random-position.h"

#include "ns3/random-variable.h"

#include "ns3/default-value.h"

#include "ns3/random-variable-default-value.h"

#include "ns3/log.h"

#include <cmath>

NS_LOG_COMPONENT_DEFINE ("RandomPosition");

namespace ns3 {

static RandomVariableDefaultValue

g_rectangleX ("RandomRectanglePositionX",

	      "A random variable which represents the x position of a position in a random rectangle.",

	      "Uniform:0:200");

static RandomVariableDefaultValue

g_rectangleY ("RandomRectanglePositionY",

	      "A random variable which represents the y position of a position in a random rectangle.",

	      "Uniform:0:200");

static RandomVariableDefaultValue

g_discTheta ("RandomDiscPositionTheta",

	     "A random variable which represents the angle (gradients) of a position in a random disc.",

	     "Uniform:0:6.2830");

static RandomVariableDefaultValue

g_discRho ("RandomDiscPositionRho",

	   "A random variable which represents the radius of a position in a random disc.",

	   "Uniform:0:200");

static NumericDefaultValue<double>

g_discX ("RandomDiscPositionX",

	 "The x coordinate of the center of the random position disc.",

	 0.0);

static NumericDefaultValue<double>

g_discY ("RandomDiscPositionY",

	 "The y coordinate of the center of the random position disc.",

	 0.0);

NS_OBJECT_ENSURE_REGISTERED (RandomPosition);

TypeId 

{

  static TypeId iid = TypeId ("RandomPosition")

    .SetParent<Object> ();

  return iid;

}

RandomPosition::RandomPosition ()

{

}

RandomPosition::~RandomPosition ()

{}

NS_OBJECT_ENSURE_REGISTERED (RandomRectanglePosition);

TypeId

{

  static TypeId iid = TypeId ("RandomRectanglePosition")

    .SetParent<RandomPosition> ()

    .AddConstructor<RandomRectanglePosition> ()

    .AddConstructor<RandomRectanglePosition, const RandomVariable &, const RandomVariable &> ();

  return iid;

}

RandomRectanglePosition::RandomRectanglePosition ()

  : m_x (g_rectangleX.GetCopy ()),

    m_y (g_rectangleY.GetCopy ())

{}

RandomRectanglePosition::RandomRectanglePosition (const RandomVariable &x,

						  const RandomVariable &y)

  : m_x (x.Copy ()),

    m_y (y.Copy ())

{}

RandomRectanglePosition::~RandomRectanglePosition ()

{

  delete m_x;

  delete m_y;

  m_x = 0;

  m_y = 0;

}

Vector

RandomRectanglePosition::Get (void) const

{

  double x = m_x->GetValue ();

  double y = m_y->GetValue ();

  return Vector (x, y, 0.0);

}

NS_OBJECT_ENSURE_REGISTERED (RandomDiscPosition);

TypeId

{

  static TypeId iid = TypeId ("RandomDiscPosition")

    .SetParent<RandomPosition> ()

    .AddConstructor<RandomDiscPosition> ()

    .AddConstructor<RandomDiscPosition, const RandomVariable &, const RandomVariable &, double, double> ();

  return iid;

}   

RandomDiscPosition::RandomDiscPosition ()

  : m_theta (g_discTheta.GetCopy ()),

    m_rho (g_discRho.GetCopy ()),

    m_x (g_discX.GetValue ()),

    m_y (g_discY.GetValue ())

{}

RandomDiscPosition::RandomDiscPosition (const RandomVariable &theta,

					const RandomVariable &rho,

					double x, double y)

  : m_theta (theta.Copy ()),

    m_rho (rho.Copy ()),

    m_x (0.0),

    m_y (0.0)

{}

RandomDiscPosition::~RandomDiscPosition ()

{

  delete m_theta;

  delete m_rho;

  m_theta = 0;

  m_rho = 0;

}

Vector

RandomDiscPosition::Get (void) const

{

  double theta = m_theta->GetValue ();

  double rho = m_rho->GetValue ();

  double x = m_x + std::cos (theta) * rho;

  double y = m_y + std::sin (theta) * rho;

  NS_LOG_DEBUG ("Disc position x=" << x << ", y=" << y);

  return Vector (x, y, 0.0);

}

} // namespace ns3