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Add polar position allocator
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7 changed files with 147 additions and 12 deletions
88
model/leo-polar-position-allocator.cc
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88
model/leo-polar-position-allocator.cc
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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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#include "math.h"
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#include "ns3/double.h"
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#include "leo-polar-position-allocator.h"
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namespace ns3 {
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NS_OBJECT_ENSURE_REGISTERED (LeoPolarPositionAllocator);
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LeoPolarPositionAllocator::LeoPolarPositionAllocator ()
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: m_latStart (0), m_lonStart (0), m_latEnd (0), m_lonEnd (0), m_step (5), m_lat (-1000.0), m_lon (-1000.0)
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{}
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LeoPolarPositionAllocator::~LeoPolarPositionAllocator ()
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{}
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TypeId
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LeoPolarPositionAllocator::GetTypeId (void)
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{
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static TypeId tid = TypeId ("ns3::LeoPolarPositionAllocator")
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.SetParent<PositionAllocator> ()
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.SetGroupName ("Leo")
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.AddConstructor<LeoPolarPositionAllocator> ()
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.AddAttribute ("LatStart",
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"Start at this latitude",
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DoubleValue (-90),
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MakeDoubleAccessor (&LeoPolarPositionAllocator::m_latStart),
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MakeDoubleChecker<double> ())
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.AddAttribute ("LatStop",
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"Stop at this longitude",
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DoubleValue (90),
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MakeDoubleAccessor (&LeoPolarPositionAllocator::m_latEnd),
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MakeDoubleChecker<double> ())
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.AddAttribute ("LongStart",
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"Start at this longitude",
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DoubleValue (-180),
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MakeDoubleAccessor (&LeoPolarPositionAllocator::m_lonStart),
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MakeDoubleChecker<double> ())
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.AddAttribute ("LongStop",
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"Stop at this longitude",
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DoubleValue (180),
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MakeDoubleAccessor (&LeoPolarPositionAllocator::m_lonEnd),
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MakeDoubleChecker<double> ())
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.AddAttribute ("Step",
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"The degrees inbetween neighboring locations",
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DoubleValue (5),
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MakeDoubleAccessor (&LeoPolarPositionAllocator::m_step),
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MakeDoubleChecker<double> ())
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;
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return tid;
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}
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int64_t
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LeoPolarPositionAllocator::AssignStreams (int64_t stream)
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{
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return -1;
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}
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Vector
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LeoPolarPositionAllocator::GetNext () const
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{
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m_lat = std::max (m_latStart, m_lat);
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m_lon = std::max (m_lonStart, m_lon);
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double lat = m_lat * (M_PI / 90);
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double lon = m_lon * (M_PI / 180);
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Vector3D next = Vector3D (LEO_GND_RAD_EARTH * sin (lat) * cos (lon),
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LEO_GND_RAD_EARTH * sin (lat) * sin (lon),
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LEO_GND_RAD_EARTH * cos (lat));
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m_lat = m_lat + m_step;
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if (m_lat > m_latEnd)
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{
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m_lat = m_latStart;
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m_lon += m_step;
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if (m_lon > m_lonEnd)
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{
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m_lon = m_lonStart;
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}
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}
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return next;
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}
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};
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