/// <summary>
/// get obj range points
/// </summary>
public bool GetCenterPosition(object o, out PointLatLng center)
{
center = new PointLatLng();
if (LinkArray.Contains(o))
{
int index = LinkArray.IndexOf(o);
double interval = route.Distance / (LinkArray.Count * 2);
double distance = interval * (2 * index + 1) - 0.0001;
List <PointLatLng> list = new List <PointLatLng>();
list.Add(PointsArray[0]);
int i = 1;
for (; i < PointsArray.Count; i++)
{
list.Add(PointsArray[i]);
GMapRoute route2 = new GMapRoute(list, "end");
if (route2.Distance < distance)
{
continue;
}
double rate;
if (i == 1)
{
rate = distance / route2.Distance;
}
else
{
list.RemoveAt(list.Count - 1);
GMapRoute route1 = new GMapRoute(list, "start");
rate = (distance - route1.Distance) / (route2.Distance - route1.Distance);
}
center.Lat = PointsArray[i - 1].Lat + (PointsArray[i].Lat - PointsArray[i - 1].Lat) * rate;
center.Lng = PointsArray[i - 1].Lng + (PointsArray[i].Lng - PointsArray[i - 1].Lng) * rate;
return(true);
}
}
return(false);
}
/// <summary>
/// get obj range points
/// </summary>
public void GetPositions(object o, ref List <PointLatLng> listPoint)
{
if (LinkArray.Contains(o))
{
int index = LinkArray.IndexOf(o);
double interval = route.Distance / LinkArray.Count;
double distance = interval * (index) - 0.0001;
List <PointLatLng> listGo = new List <PointLatLng>();
listGo.Add(PointsArray[0]);
for (int i = 1; i < PointsArray.Count; i++)
{
listGo.Add(PointsArray[i]);
GMapRoute routeGo = new GMapRoute(listGo, "go");
if (routeGo.Distance < distance || routeGo.Distance < 0.000000001)
{
listGo.RemoveAt(0);
distance -= routeGo.Distance;
}
else
{
double rate = distance / routeGo.Distance;
double latOffset = (listGo[1].Lat - listGo[0].Lat) * rate;
double lngOffset = (listGo[1].Lng - listGo[0].Lng) * rate;
PointLatLng from = new PointLatLng();
from.Lat = listGo[0].Lat + latOffset;
from.Lng = listGo[0].Lng + lngOffset;
List <PointLatLng> listBack = new List <PointLatLng>();
listBack.Add(from);
listPoint.Add(from);
int j = i - 1;
for (; j >= 0; j--)
{
listBack.Add(PointsArray[j]);
GMapRoute routeBack = new GMapRoute(listBack, "back");
if (routeBack.Distance < interval)
{
listPoint.Add(PointsArray[j]);
if (j == 0)
{
break;
}
listBack.RemoveAt(0);
interval -= routeBack.Distance;
}
else
{
rate = interval / routeBack.Distance;
latOffset = (listBack[1].Lat - listBack[0].Lat) * rate;
lngOffset = (listBack[1].Lng - listBack[0].Lng) * rate;
PointLatLng to = new PointLatLng();
to.Lat = listBack[0].Lat + latOffset;
to.Lng = listBack[0].Lng + lngOffset;
listPoint.Add(to);
break;
}
}
break;
/*
* List<PointLatLng> listTmp = new List<PointLatLng>(listPoint);
* while (j >= 0)
* {
* listTmp.Add(PointsArray[j]);
* j--;
* }
* GMapRoute routeReal = new GMapRoute(listTmp, "real");
* return (double.Parse(routeReal.Distance.ToString("0.0000")) * 1000).ToString() + "米";
*/
}
}
}
}
/// <summary>
/// get ojbects route
/// </summary>
private void GetObjectsRoute(object oBegin, object oEnd, ref List <PointLatLng> listPoint)
{
if (LinkArray.Contains(oBegin) && LinkArray.Contains(oEnd) && listPoint != null)
{
int begin = LinkArray.IndexOf(oBegin);
int end = LinkArray.IndexOf(oEnd);
double interval = route.Distance / LinkArray.Count;
double distanceB = interval * (begin) - 0.0001;
double distanceE = interval * (end) - 0.0001;
List <PointLatLng> listGo = new List <PointLatLng>();
listGo.Add(PointsArray[0]);
for (int i = 1; i < PointsArray.Count; i++)
{
listGo.Add(PointsArray[i]);
GMapRoute routeGo = new GMapRoute(listGo, "go");
if (routeGo.Distance < distanceB)
{
listGo.RemoveAt(0);
distanceB -= routeGo.Distance;
}
else
{
double rate = distanceB / routeGo.Distance;
double latOffset = (listGo[1].Lat - listGo[0].Lat) * rate;
double lngOffset = (listGo[1].Lng - listGo[0].Lng) * rate;
PointLatLng from = new PointLatLng();
from.Lat = listGo[0].Lat + latOffset;
from.Lng = listGo[0].Lng + lngOffset;
listPoint.Add(from);
List <PointLatLng> listBack = new List <PointLatLng>();
listBack.Add(from);
int j = i;
for (; j < PointsArray.Count; j++)
{
listBack.Add(PointsArray[j]);
GMapRoute routeBack = new GMapRoute(listBack, "back");
if (routeBack.Distance < distanceE)
{
listPoint.Add(PointsArray[j]);
if (j == 0)
{
break;
}
listBack.RemoveAt(0);
distanceE -= routeBack.Distance;
}
else
{
rate = interval / routeBack.Distance;
latOffset = (listBack[1].Lat - listBack[0].Lat) * rate;
lngOffset = (listBack[1].Lng - listBack[0].Lng) * rate;
PointLatLng to = new PointLatLng();
to.Lat = listBack[0].Lat + latOffset;
to.Lng = listBack[0].Lng + lngOffset;
listPoint.Add(to);
break;
}
}
break;
}
}
}
}
