public override double GetElevationFromWebService(double lat, double lng)
{
if (string.IsNullOrEmpty(_apiKey))
{
return(0);
}
try
{
string url = $"https://open.mapquestapi.com/elevation/v1/profile?key={_apiKey}&callback=handleHelloWorldResponse&shapeFormat=raw&latLngCollection={lat},{lng}";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Credentials = CredentialCache.DefaultCredentials;
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2";
request.ContentType = "application/json";
request.Referer = "https://open.mapquestapi.com/elevation/";
request.ReadWriteTimeout = 2000;
string responseFromServer = "";
using (WebResponse response = request.GetResponse())
{
using (Stream dataStream = response.GetResponseStream())
using (StreamReader reader = new StreamReader(dataStream))
{
responseFromServer = reader.ReadToEnd();
responseFromServer = responseFromServer.Replace("handleHelloWorldResponse(", "");
responseFromServer = responseFromServer.Replace("]}});", "]}}");
MapQuestResponse mapQuestResponse = JsonConvert.DeserializeObject <MapQuestResponse>(responseFromServer);
if (mapQuestResponse.elevationProfile != null &&
mapQuestResponse.elevationProfile.Count > 0 &&
mapQuestResponse.elevationProfile[0].height > -100)
{
return(mapQuestResponse.elevationProfile[0].height);
}
// All error handling is handled inside of the ElevationService.
}
}
}
catch (Exceptions.ActiveSwitchByRuleException ex)
{
throw ex;
}
catch (Exception)
{
// If we get here for any reason, then just drop down and return 0.
}
return(0);
}
public override double GetElevationFromWebService(double lat, double lng)
{
if (string.IsNullOrEmpty(ApiKey))
{
return(0);
}
double elevationInMeters = 0;
try
{
string url = $"https://open.mapquestapi.com/elevation/v1/profile?key={ApiKey}&callback=handleHelloWorldResponse&shapeFormat=raw&latLngCollection={lat},{lng}";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Credentials = CredentialCache.DefaultCredentials;
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2";
request.ContentType = "application/json";
request.Referer = "https://open.mapquestapi.com/elevation/";
request.ReadWriteTimeout = 2000;
using (WebResponse response = request.GetResponse())
{
using (Stream dataStream = response.GetResponseStream())
using (StreamReader reader = new StreamReader(dataStream))
{
string responseFromServer = reader.ReadToEnd();
responseFromServer = responseFromServer.Replace("handleHelloWorldResponse(", "");
responseFromServer = responseFromServer.Replace("]}});", "]}}");
MapQuestResponse mapQuestResponse = JsonConvert.DeserializeObject <MapQuestResponse>(responseFromServer);
if (mapQuestResponse.ElevationProfile != null && 0 < mapQuestResponse.ElevationProfile.Count)
{
elevationInMeters = mapQuestResponse.ElevationProfile[0].Height;
}
}
}
}
catch (Exception ex)
{
_logger.Error(ex, "Could not get elevation/altitude. Returning 0.");
elevationInMeters = 0;
}
return(elevationInMeters);
}
