locationmanager.cc

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/*
 * Copyright (c) 2013 - Adjacent Link LLC, Bridgewater, New Jersey
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions
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 *
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 *   notice, this list of conditions and the following disclaimer.
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 *   the documentation and/or other materials provided with the
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 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 */

#include "locationmanager.h"
#include "positionutils.h"

EMANE::LocationManager::LocationManager(NEMId nemId):
  nemId_{nemId}{}

void EMANE::LocationManager::update(const Events::Locations & locations)
{
  for(const auto & location : locations)
    {
      EMANE::NEMId targetNEMId{location.getNEMId()};
          
      if(nemId_ == targetNEMId)
        {
          // if self nem location changes clear
          //  the location pair cache
          if(localPOV_.update(location.getPosition(),
                              location.getOrientation(),
                              location.getVelocity()))
            {
              locationInfoCache_.clear();
            }
        }
      else
        {
          auto iter = locationStore_.find(targetNEMId);
              
          if(iter != locationStore_.end())
            {
              // if nem location changes clear the
              //   location pair chache if any
              if(iter->second.update(location.getPosition(),
                                     location.getOrientation(),
                                     location.getVelocity()))
                {
                  locationInfoCache_.erase(targetNEMId);
                }
            }
          else
            {
              locationStore_.insert({targetNEMId,{location.getPosition(),
                      location.getOrientation(),
                      location.getVelocity()}});
            }
        }
    }
}

      
std::pair<EMANE::LocationInfo,bool> EMANE::LocationManager::getLocationInfo(NEMId remoteNEMId)
{
  if(!localPOV_ == false)
    {
      auto cacheIter = locationInfoCache_.find(remoteNEMId);
            
      if(cacheIter != locationInfoCache_.end())
        {
          return {cacheIter->second,true};
        }
      else
        {
          auto iter = locationStore_.find(remoteNEMId);
                    
          if(iter != locationStore_.end())
            {
              LocationInfo locationInfo{localPOV_,iter->second};
                    
              locationInfoCache_[remoteNEMId] = locationInfo;
                    
              return {locationInfo,true};
            }
        }
    }
        
  return {LocationInfo{},false};
}