public ModelAttenuationCharacteristicsViewModel(PropagationModel pModel)
{
CountAttenuationPerRangeCommand = new CountAttenuationPerRangeCommand(this);
Model = pModel;
if (pModel is MultiWallPropagationModel)
{
IsMultiWallModel = true;
}
else
{
ObstacleAttenuation = 1;
}
Place = 1;
var node = NodeRepository.Instance.GetAll().FirstOrDefault();
if (node != null)
{
Frequency = node.Parameters.CentralFrequency / Tools.GetFrequencyMetricsWithValues()["[MHz]"];
}
}
/// <summary>
/// Fills cells with signal strength using given propagation model.
/// </summary>
public void FillAreaWithSignalStrength(PropagationModel pPropagationModel, Parameters pParameters, Position pPosition, Guid pNodeGuid)
{
UpdateEstimationParameters();
EstimateRange(pPropagationModel, pParameters, pPosition, pNodeGuid);
CountMaxRange(pPosition);
}
private bool GoWest(int pIndex, Position pNodePosition, PropagationModel pPropagationModel, Parameters pParameters, Guid pNodeGuid)
{
bool signalAboveThreshold = false;
var endPoint = pNodePosition.X - pIndex;
var position = new Position { X = pNodePosition.X + pIndex, Y = pNodePosition.Y + pIndex };
Debug.WriteLine("Going to SW corner. Starting point [{0}, {1}]", position.X, position.Y);
if (position.X > mBlueprint.Columns) position.X = mBlueprint.Columns;
if (position.Y > mBlueprint.Rows) return false;
while (position.X != endPoint)
{
Debug.WriteLine("Counting signal strength for cell [{0}, {1}]", position.X, position.Y);
var signal = pPropagationModel.CountSignalStrength(pNodePosition, position, pParameters);
if (signal > mTreshold)
{
signalAboveThreshold = true;
var cell = mBlueprint[(int)position.X, (int)position.Y];
cell.SetSignalSource(pNodeGuid.ToString(), signal);
}
position.X--;
}
return signalAboveThreshold;
}
private bool GoEast(int pIndex, Position pNodePosition, PropagationModel pPropagationModel, Parameters pParameters, Guid pNodeGuid)
{
bool signalAboveThreshold = false;
var endPoint = pNodePosition.X + pIndex;
var position = new Position {X = pNodePosition.X - pIndex, Y = pNodePosition.Y - pIndex};
Debug.WriteLine("Going to NE corner. Starting point [{0}, {1}]", position.X, position.Y);
if (position.X < 0) position.X = 0;
if (position.Y < 0) return false; // index outside cell area, dont count anything
while (position.X != endPoint)
{
Debug.WriteLine("Counting signal strength for cell [{0}, {1}]", position.X, position.Y);
var signal = pPropagationModel.CountSignalStrength(pNodePosition, position, pParameters);
if (signal > mTreshold)
{
signalAboveThreshold = true;
var cell = mBlueprint[(int)position.X, (int)position.Y];
cell.SetSignalSource(pNodeGuid.ToString(), signal);
}
position.X++;
}
return signalAboveThreshold;
}
private void EstimateRange(PropagationModel pPropagationModel, Parameters pParameters, Position pPosition, Guid pNodeGuid)
{
// Log.Write(LogLevel.Debug, "Estimating Node signal strength in CellArea.");
var IsAboveThreshold = new []{true, true, true, true};
for(int i = 1; IsAboveThreshold.Any(s => s); i++)
{
IsAboveThreshold[(int)MoveDirection.East] = GoEast(i, pPosition, pPropagationModel, pParameters, pNodeGuid);
IsAboveThreshold[(int)MoveDirection.South] = GoSouth(i, pPosition, pPropagationModel, pParameters, pNodeGuid);
IsAboveThreshold[(int)MoveDirection.West] = GoWest(i, pPosition, pPropagationModel, pParameters, pNodeGuid);
IsAboveThreshold[(int)MoveDirection.North] = GoNorth(i, pPosition, pPropagationModel, pParameters, pNodeGuid);
}
}
