public void Distance()
{
var pos1 = new Position(46.83749695f, 16.84976191f);
var pos2 = new Position(46.83749276f, 16.84976201f);
var distance = GeoHelper.Distance(pos1, pos2);
Assert.AreEqual(0.4, distance, 0.01);
}
public void GeoHelper_Plot()
{
// Plot a destination from an origin point using a course and
// distance and compare this to a known result from:
//
// http://www.movable-type.co.uk/scripts/latlong.html
var start = new GeoCoordinate("50 03 59N", "005 42 53W");
var end = GeoHelper.Plot(start, 45, 15, GeoHelper.EarthRadiusKilometers);
var reference = new GeoCoordinate("50°09′42″N", "005°33′57″W");
Assert.IsTrue(start.Latitude < end.Latitude);
Assert.IsTrue(start.Longitude < end.Longitude);
Assert.IsTrue(GeoHelper.Distance(end, reference, GeoHelper.EarthRadiusKilometers) < 0.02); // Verify accuracy to within 2%
}
public void GeoHelper_Distance()
{
// Compute the distance between two points on the earth where
// we know the distance from the calculator on:
//
// http://www.movable-type.co.uk/scripts/latlong.html
var millCreek = new GeoCoordinate(47.845, -122.248);
var rosemont = new GeoCoordinate(47.621, -122.092);
var distance = GeoHelper.Distance(millCreek, rosemont, GeoHelper.EarthRadiusKilometers);
Assert.IsTrue(27.45 <= distance && distance < 27.55);
distance = GeoHelper.Distance(rosemont, millCreek, GeoHelper.EarthRadiusKilometers);
Assert.IsTrue(27.45 <= distance && distance < 27.55);
}
/// <summary>
/// Checks if we need to update data
/// </summary>
/// <param name="sender"></param>
/// <param name="o"></param>
private async void HeartbeatTick(object sender, object o)
{
// We need to skip this iteration
if (!_keepHeartbeating || _isHeartbeating)
{
return;
}
_isHeartbeating = true;
// Heartbeat is alive so we check if we need to update data, based on GameSettings
var canRefresh = false;
//Collect location data for signature
DeviceInfos.Current.CollectLocationData();
// We have no settings yet so we just update without further checks
if (GameSetting == null)
{
canRefresh = true;
}
else
{
// Check if we need to update
var minSeconds = GameSetting.MapSettings.GetMapObjectsMinRefreshSeconds;
var maxSeconds = GameSetting.MapSettings.GetMapObjectsMaxRefreshSeconds;
var minDistance = GameSetting.MapSettings.GetMapObjectsMinDistanceMeters;
var lastGeoCoordinate = _lastGeopositionMapObjectsRequest;
var secondsSinceLast = DateTime.Now.Subtract(BaseRpc.LastRpcRequest).Seconds;
if (lastGeoCoordinate == null)
{
Logger.Write("Refreshing MapObjects, reason: 'lastGeoCoordinate == null'.");
canRefresh = true;
}
else if (secondsSinceLast >= minSeconds)
{
var metersMoved = GeoHelper.Distance(Geoposition.Coordinate.Point, lastGeoCoordinate.Coordinate.Point);
if (secondsSinceLast >= maxSeconds)
{
Logger.Write($"Refreshing MapObjects, reason: 'secondsSinceLast({secondsSinceLast}) >= maxSeconds({maxSeconds})'.");
canRefresh = true;
}
else if (metersMoved >= minDistance)
{
Logger.Write($"Refreshing MapObjects, reason: 'metersMoved({metersMoved}) >= minDistance({minDistance})'.");
canRefresh = true;
}
}
}
// Update!
if (!canRefresh)
{
_isHeartbeating = false;
return;
}
try
{
await UpdateMapObjects();
}
catch (Exception ex)
{
await ExceptionHandler.HandleException(ex);
}
finally
{
_isHeartbeating = false;
}
}
