public bool isPointWithin(GeoPoint point)
{
double A = Math.Pow(point.Latitude - Center.Latitude, 2) / Math.Pow(witdh / 2, 2);
double B = Math.Pow(point.Longitude - Center.Longitude, 2) / Math.Pow(height / 2, 2);
if (A+B <= 1)
{
return true;
}
return false;
}
public Ellipse(GeoPoint pt1, GeoPoint pt2)
{
double lat1 = pt1.Latitude;
double lon1 = pt1.Longitude;
double lat2 = pt2.Latitude;
double lon2 = pt2.Longitude;
GeoPoint elipseMiddle = GeoMath.getMiddlePoint(lat1, lon1, lat2, lon2);
double distance = GeoMath.distanceLatLong(lat1, lon1, lat2, lon2);
Center = elipseMiddle;
witdh = distance;
height = distance / 2;
}
public static List<Ride> ClassificaCaronasComRota(List<Ride> Lista, GeoPoint usrOrg, GeoPoint usrDes)
{
Ellipse eVrd = new Ellipse(usrOrg, usrDes);
Ellipse eAmr = new Ellipse();
eAmr.witdh = eVrd.witdh * 1.3;
eAmr.height = eVrd.height * 1.3;
eAmr.Center = eVrd.Center;
foreach (var r in Lista)
{
GeoPoint gOrg = new GeoPoint(r.LatOrigem, r.LonOrigem);
if (eVrd.isPointWithin(gOrg))
{
r.classOrg = ClassifiCarona.VERDE;
}
else if (eAmr.isPointWithin(gOrg))
{
r.classOrg = ClassifiCarona.AMARELO;
}
else
{
r.classOrg = ClassifiCarona.VERMELHO;
}
r.distanciaOrg = (decimal)GeoMath.distanceKM(usrOrg, gOrg);
GeoPoint gDes = new GeoPoint(r.LatDestino, r.LonDestino);
if (eVrd.isPointWithin(gDes))
{
r.classDes = ClassifiCarona.VERDE;
}
else if (eAmr.isPointWithin(gDes))
{
r.classDes = ClassifiCarona.AMARELO;
}
else
{
r.classDes = ClassifiCarona.VERMELHO;
}
r.distanciaDes = (decimal)GeoMath.distanceKM(usrDes, gDes);
}
return Lista;
}
public static List<Ride> ClassificaCaronasSemRota(List<Ride> Lista, GeoPoint usrOrg)
{
foreach (var r in Lista)
{
GeoPoint gOrg = new GeoPoint(r.LatOrigem, r.LonOrigem);
r.distanciaOrg = (decimal)GeoMath.distanceKM(usrOrg, gOrg);
r.classOrg = ClassifiCarona.NONE;
r.classDes = ClassifiCarona.NONE;
}
return Lista;
}
public static double distanceKM(GeoPoint g1, GeoPoint g2)
{
return distanceKM(g1.Latitude, g1.Longitude, g2.Latitude, g2.Longitude);
}
public static GeoPoint getMiddlePoint(double lat1, double lon1, double lat2, double lon2)
{
GeoPoint gp = new GeoPoint();
gp.Latitude = (lat1 + lat2) / 2;
gp.Longitude = (lon1 + lon2) / 2;
return gp;
}