/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ /* * 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: Tim Schubert */ #include "math.h" #include "ns3/double.h" #include "ns3/uinteger.h" #include "ns3/log.h" #include "leo-polar-position-allocator.h" namespace ns3 { NS_OBJECT_ENSURE_REGISTERED (LeoPolarPositionAllocator); NS_LOG_COMPONENT_DEFINE ("LeoPolarPositionAllocator"); LeoPolarPositionAllocator::LeoPolarPositionAllocator () : m_latNum (1), m_lonNum (1), m_lat (0), m_lon (0) {} LeoPolarPositionAllocator::~LeoPolarPositionAllocator () {} TypeId LeoPolarPositionAllocator::GetTypeId (void) { static TypeId tid = TypeId ("ns3::LeoPolarPositionAllocator") .SetParent () .SetGroupName ("Leo") .AddConstructor () .AddAttribute ("LatNum", "The number nodes along one latitude", UintegerValue (10), MakeUintegerAccessor (&LeoPolarPositionAllocator::m_latNum), MakeUintegerChecker ()) .AddAttribute ("LonNum", "The number nodes along one longitude", UintegerValue (10), MakeUintegerAccessor (&LeoPolarPositionAllocator::m_lonNum), MakeUintegerChecker ()) ; return tid; } int64_t LeoPolarPositionAllocator::AssignStreams (int64_t stream) { NS_LOG_FUNCTION (this << stream); return -1; } Vector LeoPolarPositionAllocator::GetNext () const { NS_LOG_FUNCTION (this); double lat = m_lat * (M_PI / m_latNum); double lon = m_lon * (2 * M_PI / m_lonNum); Vector3D next = Vector3D (LEO_GND_RAD_EARTH * sin (lat) * cos (lon), LEO_GND_RAD_EARTH * sin (lat) * sin (lon), LEO_GND_RAD_EARTH * cos (lat)); m_lat ++; if (m_lat > m_latNum) { m_lat = 0; m_lon = (m_lon+1) % m_lonNum; } NS_LOG_INFO ("Ground station at " << lat << ":" << lon << " -> " << next); return next; } };