// ===================================================================================================
// Get geo location, and work with it
//
// 1) Get Latitude, Longitude, Altitude, Accuracy from current location
// 2) Generate "100 miles" address list of hospitals in range. Post to button.
// ===================================================================================================
public static async Task GetDevLocationAsync_SectionA()
{
try
{
//
// 1) Get Latitude, Longitude, Altitude, Accuracy from current location
// -------------------------------------------------------------------------
var georequest = new GeolocationRequest(GeolocationAccuracy.Best);
var georesults = await Geolocation.GetLocationAsync(georequest);
App.deviceLatitude = Convert.ToDouble(georesults.Latitude.ToString());
App.deviceLongitude = Convert.ToDouble(georesults.Longitude.ToString());
App.strAccuracyMeters = Convert.ToInt32(georesults.Accuracy).ToString();
App.strAccuracyFeet = (Convert.ToInt32(georesults.Accuracy) * 3.28).ToString();
//
// 2) Generate "100 miles" address list of hospitals in range.
// -----------------------------------------------------------------------
int atemp = (Convert.ToInt32(App.defaultHospitalRange));
atemp = atemp * 100;
App.requestedHospitalRange = atemp;
//
// Now get and load the 100-miles list
//
FlatData.Load_HospitalsInRage(App.deviceLatitude, App.deviceLongitude);
//
}
catch (Exception ex)
{
string aa = ex.ToString();
App.MajorError = true;
}
}
// ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
// Load a two-dimensional array with
// 1) all indexes (into hospitalsDB )
// 2) distance for that index
//
// 1. get distance from target to every hospital
// 2. if < 10/20/30/40 save in index array <hospital pointer, distance>
// 3. sort the helper arrays by distance.
// We now have 5 arrays, sorted by distance, holding hospital pointers
// 4. Fill the actual details arrays using the helper arrays
// ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
public static void Load_HospitalsInRage(double inLatfrom, double inLongfrom)
{
//
//
bool iB = true;
Location coord1 = new Location(inLatfrom, inLongfrom);
Location coord2 = new Location(inLatfrom, inLongfrom); // dummy entry, just to get location
double distanceInRadius = 0.0f;
Int32 intdistanceInRadius = 0;
App.hospitalsInRangeCount = 0;
if (inLatfrom <= 0.0)
{
iB = false;
}
if (inLongfrom <= 0.0)
{
iB = false;
}
try
{
//
// Get Distance, and fill helper arrays
//
App.hospitalsInRangeCount = 0;
for (int innn = 0; innn < App.hospitalsDBRowsCount; innn++)
{
//
// 100 count
//
if (App.hospitalsInRangeCount == 101)
{
break;
}
// There are some records that have no Latitude / Longitude
// both cases will be handled by the abreviated catch {}
try
{
// Get 'radian' distance, i.e. "Birdview" distance between device-address and array entry
coord2 = new Location(Convert.ToDouble(App.hospitalsDB[innn, 8]), Convert.ToDouble(App.hospitalsDB[innn, 9]));
distanceInRadius = Location.CalculateDistance(coord1, coord2, DistanceUnits.Miles);
intdistanceInRadius = Convert.ToInt32((distanceInRadius) * 100);
if (intdistanceInRadius < App.requestedHospitalRange)
{
App.hospitalsInRange[App.hospitalsInRangeCount, 0] = innn;
App.hospitalsInRange[App.hospitalsInRangeCount, 1] = intdistanceInRadius;
App.hospitalsInRangeCount++;
iB = false;
}
}
catch (Exception stre)
{
string aa = stre.Message.ToString();
}
}
}
catch (Exception stre)
{
string aa = stre.Message.ToString();
}
if (App.hospitalsInRangeCount != 0)
{
App.hospitalsInRangeCount = App.hospitalsInRangeCount - 1;
}
//
// sort helper arrays by distance
//
if (iB == false)
{
FlatData.SorthospitalsInRange();
}
}