/// <summary>
/// An asynchronous fetch of a map route (untested)
/// </summary>
/// <param name="mapData"></param>
/// <param name="googleMapsKey"></param>
/// <param name="StartStopList"></param>
public bool GetRoute(string googleMapsKey, string originAddress, string destinationAddress,
out SimioMapRoute mapRoute,
out string requestUrl, out string explanation)
{
requestUrl = "";
explanation = "";
mapRoute = null;
try
{
mapRoute = new SimioMapRoute(originAddress, destinationAddress);
DirectionsRequest request = new DirectionsRequest
{
Key = googleMapsKey,
Origin = new Location(originAddress),
Destination = new Location(destinationAddress)
};
requestUrl = request.ToString();
var response = GoogleApi.GoogleMaps.Directions.Query(request);
mapRoute.SegmentList.Clear();
// .. wait for response ..
// Response has Routes, and Routes have legs. Typically 1-2 routes
foreach (Route route in response.Routes)
{
// Route has an overview summary and boundingbox
// We could make the bounding box from the one that Bing Maps sends us,
//but we're going to do our own to match the usa 'map'.
////PointF ptLoc = new PointF((float)route.Bounds.NorthEast.Latitude, (float)route.Bounds.NorthEast.Longitude);
////float width = (float)(route.Bounds.NorthEast.Latitude - route.Bounds.SouthWest.Latitude);
////float height = (float)(route.Bounds.NorthEast.Longitude - route.Bounds.SouthWest.Longitude);
////// We're going to bound according to the contiguous USA, which is appox.
////// lat 20 to 50, and lon -60 to -130
////PointF ptLoc = lonlatBox.Location; // new PointF( -130f, 20f);
////float width = lonlatBox.Width; // 70f;
////float height = lonlatBox.Height; // 30f;
////// Turning the thing on its side, since we want latitude to be 'Y'
////mapData.LonLatBoundingBox = new RectangleF(ptLoc.X, ptLoc.Y, width, height);
////mapData.Origin = new PointF(ptLoc.X + width / 2f, ptLoc.Y + height / 2f);
////mapData.SimioScaling = simioScaling;
int ii = 0;
StringBuilder sb = new StringBuilder();
foreach (Leg leg in route.Legs)
{
// Legs have distance and duration
// and StartLocation and address, and EndLocation and address
foreach (Step step in leg.Steps)
{
double lat = step.StartLocation.Latitude;
double lon = step.StartLocation.Longitude;
MapCoordinate mcStart = new MapCoordinate(lat, lon);
lat = step.EndLocation.Latitude;
lon = step.EndLocation.Longitude;
MapCoordinate mcEnd = new MapCoordinate(lat, lon);
MapSegment segment = null;
if (ii == 0)
{
segment = mapRoute.AddFirstSegment(mcStart, mcEnd);
}
else
{
segment = mapRoute.AppendSegment(mcEnd);
}
// Now add Google-specific information
segment.Distance = step.Distance.Value;
segment.Duration = step.Duration.Value;
ii++;
sb.AppendLine($"Instructions={step.HtmlInstructions} Distance={step.Distance.Text} >> {step.Duration.Text}");
} // foreach step
} // foreach leg
explanation = sb.ToString();
}
return(true);
}
catch (Exception ex)
{
explanation = $"From={originAddress} To={destinationAddress} Err={ex}";
return(false);
}
}
