public static List <WindForecastInstance> GetWindForecastInstances5Days3HourInterval(double latitude, double longitude)
{
StringBuilder urlRequest = new StringBuilder();
urlRequest.Append("http://api.openweathermap.org/data/2.5/forecast?");
urlRequest.Append($"lat={latitude}&lon={longitude}");
urlRequest.Append("&APPID=9fbb2cbde0201181c427ff24405bfdeb&units=metric");
string jsonResponse = HttpRequestsUtility.Get(urlRequest.ToString());
JsonRoot forecast = JsonConvert.DeserializeObject <JsonRoot>(jsonResponse);
if (forecast.httpReponseCode != "200")
{
return(null);
}
List <WindForecastInstance> windForecastInstances = new List <WindForecastInstance>();
foreach (var forecastInstance in forecast.forecastInstances)
{
WindForecastInstance windForecastInstance = new WindForecastInstance();
windForecastInstance.forecastTime = DateTimeUtility.UnixTimeStampToDateTime(forecastInstance.forecastTime);
windForecastInstance.windStrengthMps = forecastInstance.wind.windStrengthMps;
windForecastInstance.WindDirectionDegrees = forecastInstance.wind.windDirectionDegrees;
windForecastInstances.Add(windForecastInstance);
}
return(windForecastInstances);
}
private static WindForecastInstance GetClothestForecastInstance(List <WindForecastInstance> windForecastInstances, DateTime forecastTime)
{
TimeSpan shortestInstanceTimeDifference = TimeSpan.MaxValue;
WindForecastInstance clothestWindForecastInstance = null;
foreach (var windForecastInstance in windForecastInstances)
{
TimeSpan instanceTimeDifference = (windForecastInstance.forecastTime - forecastTime).Duration();
if (instanceTimeDifference < shortestInstanceTimeDifference)
{
shortestInstanceTimeDifference = instanceTimeDifference;
clothestWindForecastInstance = windForecastInstance;
}
}
return(clothestWindForecastInstance);
}
public static WindForecastInstance GetWindForecast(double latitude, double longitude, DateTime forecastTime)
{
if (forecastTime < DateTime.Now.AddHours(-1) || forecastTime > DateTime.Now.AddDays(5))
{
Console.WriteLine("Cannot get forecast for " + forecastTime.ToString());
return(null);
}
var windForecastInstances = GetWindForecastInstances5Days3HourInterval(latitude, longitude);
if (windForecastInstances == null)
{
Console.WriteLine("GetWindForecastInstances5Days3HourInterval returned null");
return(null);
}
WindForecastInstance clothestWindForecastInstance = GetClothestForecastInstance(windForecastInstances, forecastTime);
return(clothestWindForecastInstance);
}
public static CommuteQuality GetCommuteQualityRating(string startAddress, string destinationAddress, DateTime forecastTime)
{
GoogleMapsAPI googleMapsAPI = new GoogleMapsAPI(startAddress, destinationAddress);
if (googleMapsAPI.GetPathDistance() > 100000) // > 100 km
{
Console.WriteLine("Distance between addresses is too long. Results may be inaccurate.");
}
double pathDirection = googleMapsAPI.GetPathDirection();
WindForecastInstance windForecastInstance = WindForecastAPI.GetWindForecast(googleMapsAPI.GetMedianLatitude(), googleMapsAPI.GetMedianLongitude(), forecastTime);
// Wind direction is the direction wind comes from, therefore before doing vector calculations it needs to be rotated 180 degrees.
double forecastWindVectorDirection = TrigonometryUtility.RotateAngle180(windForecastInstance.WindDirectionDegrees);
double windAngleDifference = TrigonometryUtility.GetDegreeBetweenVectors(pathDirection, forecastWindVectorDirection);
double windHelpMagnitude = TrigonometryUtility.DotProductWithUnitVector(windForecastInstance.windStrengthMps, windAngleDifference);
CommuteQuality commuteQuality = new CommuteQuality();
commuteQuality.Rating = new CommuteRating(CalculateHelpIndex(windHelpMagnitude));
commuteQuality.windPositiveWorkPercentage = GetPositiveWindWorkPercentage(googleMapsAPI, forecastWindVectorDirection);
return(commuteQuality);
}
