private FlightApproval GetClosesetApproval(GPSPoint ThisPosition)
{
Double MinDistance = -1;
FlightApproval flightApproval = null;
foreach (FlightApproval Approval in FlightApprovals)
{
Double ThisDistance = Approval.GetDistanceTo(ThisPosition);
if (MinDistance < 0 || MinDistance < ThisDistance)
{
flightApproval = Approval;
}
}
return(flightApproval);
}
public async Task <bool> GenerateAlerts()
{
bool _InBoundary = true;
bool _InSoftBoundary = true;
bool _IsInAltitudeLimit = true;
GPSPoint ThisPosition = new GPSPoint((float)_FlightMapData.Latitude, (float)_FlightMapData.Longitude);
FlightApproval Approval = GetApproval(ThisPosition);
if (Approval != null)
{
_Approval = Approval;
_DroneFlight.ApprovalID = _Approval.ApprovalId;
_InBoundary = _Approval.IsInBoundary(ThisPosition);
_InSoftBoundary = Approval.IsInSoftBoundary(ThisPosition);
_IsInAltitudeLimit = Approval.IsInAltitudeLimit((Decimal)_FlightMapData.Altitude);
}
else
{
_Approval = GetClosesetApproval(ThisPosition);
_InBoundary = false;
_InSoftBoundary = false;
//If approval found on close by, take that
//if not, maximum to 40 meter
_IsInAltitudeLimit = _Approval != null?
_Approval.IsInAltitudeLimit((Decimal)_FlightMapData.Altitude) :
(_FlightMapData.Altitude <= 40M);
}
if (!_InSoftBoundary && !IsAlertedSoftBoundary)
{
//Outside the Soft Boundary, Generate alert
var ThisAlert = new Alert(_ExtDroneFlight);
ThisAlert.Generate("Boundary", "Critical");
await ThisAlert.Save();
IsAlertedSoftBoundary = true;
}
else if (_InSoftBoundary)
{
IsAlertedSoftBoundary = false;
}
if (!_InBoundary && !IsAlertedBoundary)
{
//Outside the Boundary, generate alert
var ThisAlert = new Alert(_ExtDroneFlight);
ThisAlert.Generate("Boundary", "High");
await ThisAlert.Save();
IsAlertedBoundary = true;
}
else if (_InBoundary)
{
IsAlertedBoundary = false;
}
if (!_IsInAltitudeLimit && !IsAlertedAltitudeLimit)
{
//Generate Alert for Altitude breach
var ThisAlert = new Alert(_ExtDroneFlight);
ThisAlert.Generate("Altitude", "Critical");
await ThisAlert.Save();
IsAlertedAltitudeLimit = true;
}
else if (_IsInAltitudeLimit)
{
IsAlertedAltitudeLimit = false;
}
//Save the current status
_DroneFlight.ApprovalID = _Approval == null ? 0 : _Approval.ApprovalId;
_DroneFlight.IsFlightOutside = IsAlertedBoundary;
_DroneFlight.IsFlightSoftFence = IsAlertedSoftBoundary ? 1 : 0;
_DroneFlight.HigherLimit = IsAlertedAltitudeLimit ? 1 : 0;
_FlightMapData.IsOutSide = !_InBoundary;
_FlightMapData.IsSoftFence = (_InSoftBoundary ? 0 : 1);
return(true);
}
