/// <summary>
/// Write's the specified entity to the text file
/// </summary>
/// <param name="entity"></param>
public void OutputEntity(IAgEntity entity)
{
DateTime utcNow = DateTime.UtcNow;
int millisecondSinceLastWrite = (int)(utcNow - m_timeLastWrite).TotalMilliseconds;
m_timeLastWrite = utcNow;
OutputSettings settings;
if (!m_settings.TryGetValue(entity.ID, out settings))
{
settings = new OutputSettings(Affiliation.Friendly, "SFAPMF----*****");
}
AgPointEntity pointEntity = entity as AgPointEntity;
StringBuilder entry = new StringBuilder();
entry.Append(pointEntity.DisplayName);
entry.Append(" ");
entry.Append(Math.Round(pointEntity.Position.Latitude, 6));
entry.Append(" ");
entry.Append(Math.Round(pointEntity.Position.Longitude, 6));
entry.Append(" ");
entry.Append(Math.Round(pointEntity.Position.Altitude, 6));
entry.Append(" ");
entry.Append(settings.Affiliation);
entry.Append(" ");
entry.Append(settings.Symbology);
entry.Append(" ");
entry.Append(millisecondSinceLastWrite);
m_textWriter.WriteLine(entry.ToString());
}
/// <summary>
/// ThreadFunction is where all of the actual substance happens.
/// Using the Stream object, we read a line of data and parse
/// it for the entity ID, Position and our meta-data.
/// This data is in a simple format laid out as follows.
/// Each line is 80 characters plus linefeed and carriage return
/// Each token is seperated by a single whitespace with the order being
/// NAME LAT LON ALT AFFILIATION MIL2525B TIMETONEXTUPDATE
/// ReferenceProviderData.txt in the Samples\Data directory contains
/// sample data which can be used to run the plug-in.
/// </summary>
public void ThreadFunction()
{
//If we have any subscribers, generate the start event
if (OnProviderStart != null)
{
OnProviderStart(this);
}
while (m_active)
{
//Open the text file for reading
using (TextReader textReader = new StreamReader(m_filename))
{
string line = textReader.ReadLine();
while (m_active && (line != null))
{
//Parse a line
string[] elements = textReader.ReadLine().Split(' ');
string entityName = elements[0];
double latitude = Convert.ToDouble(elements[1]);
double longitude = Convert.ToDouble(elements[2]);
double altitude = Convert.ToDouble(elements[3]);
string affiliation = elements[4];
string mil2525b = elements[5];
int timeDelay = Convert.ToInt32(elements[6]);
//Now we'll see if the entity has already been
//inserted into the system. If it has, we simply
//update it and call CommitUpdate, if it hasn't
//we need to call Add
bool NewEntity = false;
IAgEntity Entity;
IAgPointEntity PointEntity;
Entity = Entities.Find(entityName);
if (Entity == null)
{
PointEntity = new AgPointEntity() as IAgPointEntity;
Entity = PointEntity as IAgEntity;
Entity.ID = entityName;
PointEntity.Position = new AgEntityPosition() as IAgEntityPosition;
NewEntity = true;
}
else
{
PointEntity = Entity as IAgPointEntity;
}
//Our data does not have time so we always assume the
//position time is now. RT3 uses UTC.
Entity.Time = DateTime.UtcNow;
//Set the position
PointEntity.Position.Set(latitude, longitude, altitude);
//Set the meta-data
IAgEntityMetaDataCollection metaData = Entity.MetaData;
metaData.Set("Affiliation", affiliation);
metaData.Set("Symbology", mil2525b);
//Call add or update
if (NewEntity)
{
Entities.Add(Entity);
}
else
{
PointEntity.CommitUpdate(AgEEntityUpdate.eEntityUpdate);
}
//Sleep the desired wait time
if (timeDelay > 0)
{
Thread.Sleep(timeDelay);
}
line = textReader.ReadLine();
}
//Since we're just reading from a file, when we hit the
//end we'll remove everything and then start over.
//This way we never run out of sample data.
Entities.RemoveAll();
Thread.Sleep(1000);
}
}
//When we stop, make sure we trigger the OnProviderStop event.
if (OnProviderStop != null)
{
OnProviderStop(this);
}
}
