private PointF?CalculateWithMirrorPositions2(List <SignalEventDetails> orderedGroup)
{
PointF?eventPosition = null;
int groupCount = orderedGroup.Count;
var detectionMirrors = new List <Tuple <PointF, PointF> >(groupCount);
int totalSignalWeight = 0;
for (int i = 0; i < groupCount; i++)
{
var signalEventDetails = orderedGroup[i];
signalEventDetails.Distance = _signalToDistanceConverter.GetDistance(signalEventDetails.Rssi);
var otherSignalEventDetails = i < groupCount - 1 ? orderedGroup[i + 1] : orderedGroup[i - 1];
double angle = GeometryUtil.GetAngle(signalEventDetails.BleReceiver.Position,
otherSignalEventDetails.BleReceiver.Position);
var mirrors = CreateMirroredPoints(signalEventDetails.BleReceiver.Position, signalEventDetails.Distance,
angle);
detectionMirrors.Add(mirrors);
totalSignalWeight += signalEventDetails.Rssi;
}
//get first mirror closest to leading sensor then advance to each mirror closest to event position
for (int i = 1; i < groupCount - 1; i++)
{
var signalEventDetails = orderedGroup[i];
var nextMirrors = detectionMirrors[i + 1];
PointF refPosition;
if (eventPosition.HasValue)
{
refPosition = eventPosition.Value;
}
else
{
refPosition = signalEventDetails.BleReceiver.Position;
}
var selectedNextPoint = GeometryUtil.GetDistance(nextMirrors.Item1, refPosition) <
GeometryUtil.GetDistance(nextMirrors.Item2, refPosition)
? nextMirrors.Item1
: nextMirrors.Item2;
if (!eventPosition.HasValue)
{
var currentMirrors = detectionMirrors[i];
refPosition = GeometryUtil.GetDistance(currentMirrors.Item1, selectedNextPoint) <
GeometryUtil.GetDistance(currentMirrors.Item2, selectedNextPoint)
? currentMirrors.Item1
: currentMirrors.Item2;
}
eventPosition = GeometryUtil.CalculatePointInBetween(refPosition, selectedNextPoint);
}
return(eventPosition);
}
private void HandleEventGroup(List <SignalEventDetails> eventGroup)
{
if (eventGroup.IsNullOrEmpty())
{
return;
}
var groupCount = eventGroup.Count;
var signalEventDetails = eventGroup.First();
var transmitter = eventGroup.First().Transmitter;
PointF?eventPosition;
if (groupCount == 1)
{
eventPosition = signalEventDetails.BleReceiver.Position;
}
else
{
var orderedGroup = eventGroup.OrderByDescending(e => e.Rssi).ToList();
signalEventDetails = orderedGroup.First();
eventPosition = _useWeightedPath ? CalculateWeightedPathPoint(orderedGroup) : CalculateWithMirrorPositions(orderedGroup);
}
if (!eventPosition.HasValue)
{
return;
}
if (!transmitter.PositionInitialized)
{
transmitter.Position = eventPosition.Value;
}
else
{
if (_useWeightedPath)
{
double distanceFromSource;
var path = FindPath(signalEventDetails.BleReceiver, transmitter.Position, out distanceFromSource);
if (path == null)
{
transmitter.Position = GeometryUtil.CalculatePointInBetween(transmitter.Position,
eventPosition.Value);
}
else
{
distanceFromSource = distanceFromSource + (path.Distance - distanceFromSource) / 2;
var newPoint = path.FindPointInPath(path.GetOther(signalEventDetails.BleReceiver), distanceFromSource);
transmitter.Position = newPoint;
}
}
else
{
transmitter.Position = GeometryUtil.CalculatePointInBetween(transmitter.Position,
eventPosition.Value);
}
}
if (TransmitterPositionDiscovered != null)
{
TransmitterPositionDiscovered(transmitter);
}
return;
//can't order by timestamp because it's too random and created by the server
//transmitter.Position = eventPosition.Value;
//if (TransmitterPositionDiscovered != null)
// TransmitterPositionDiscovered(transmitter);
}
private PointF?CalculateWithMirrorPositions(List <SignalEventDetails> orderedGroup)
{
return(GeometryUtil.CalculatePointInBetween(orderedGroup[0].BleReceiver.Position,
orderedGroup[1].BleReceiver.Position));
}