private void GetLocationData()
{
string url = @"http://developer.kensnz.com/getlocdata";
using (WebClient client = new WebClient())
{
var json = client.DownloadString(url);
JavaScriptSerializer ser = new JavaScriptSerializer();
var JSONArray = ser.Deserialize <Dictionary <string, string>[]>(json);
//rTBnotes.AppendText(json + "\n\n");
foreach (Dictionary <string, string> map in JSONArray)
{
int userid = int.Parse(map["userid"]);
double latitude = double.Parse(map["latitude"]);
double longitude = double.Parse(map["longitude"]);
string description = map["description"];
PlaceOfInterest poi = new PlaceOfInterest(userid, latitude, longitude, description);
//listViewPOI.Items.Add(poi.UserID + " : " + poi.Latitude + " : " + poi.Longitude + " : " + poi.Description);
placeOfInterests.Add(poi);
if (!UserIds.Contains(poi.UserID))
{
UserIds.Add(poi.UserID);
CBofIds.Items.Add(poi.UserID);
}
}
}
}//GetLocationData
private void GetLocationData()
{
string url = @"http://developer.kensnz.com/getlocdata";
using (WebClient client = new WebClient())
{
var json = client.DownloadString(url);
JavaScriptSerializer ser = new JavaScriptSerializer();
var JSONArray = ser.Deserialize <Dictionary <string, string>[]>(json);
foreach (Dictionary <string, string> map in JSONArray)
{
int userid = int.Parse(map["userid"]);
double latitude = double.Parse(map["latitude"]);
double longitude = double.Parse(map["longitude"]);
string description = map["description"];
PlaceOfInterest poi = new PlaceOfInterest(userid, latitude, longitude, description);
ListViewItem listViewItem = new ListViewItem();
listViewItem.Text = (poi.UserID.ToString());
listViewItem.SubItems.Add(poi.Latitude.ToString());
listViewItem.SubItems.Add(poi.Longitude.ToString());
listViewItem.SubItems.Add(poi.Description.ToString());
listViewPOI.Items.Add(listViewItem);
placeOfInterests.Add(poi);
}
}
}//GetLocationData
private static List <PlaceOfInterest> HullSorted(List <PlaceOfInterest> newPoints)
{
List <PlaceOfInterest> upperHull = new List <PlaceOfInterest>();
foreach (PlaceOfInterest p in SelectHull)
{
while (upperHull.Count >= 2)
{
PlaceOfInterest q = upperHull[upperHull.Count - 1];
PlaceOfInterest r = upperHull[upperHull.Count - 2];
if ((q.Latitude - r.Latitude) * (p.Longitude - r.Longitude) >= (q.Longitude - r.Longitude) * (p.Latitude - r.Latitude))
{
upperHull.RemoveAt(upperHull.Count - 1);
}
else
{
break;
}
}//While
upperHull.Add(p);
}
upperHull.RemoveAt(upperHull.Count - 1);
List <PlaceOfInterest> lowerHull = new List <PlaceOfInterest>();
for (int i = SelectHull.Count - 1; i >= 0; i--)
{
PlaceOfInterest p = SelectHull[i];
while (lowerHull.Count >= 2)
{
PlaceOfInterest q = lowerHull[lowerHull.Count - 1];
PlaceOfInterest r = lowerHull[lowerHull.Count - 2];
if ((q.Latitude - r.Latitude) * (p.Longitude - r.Longitude) >= (q.Longitude - r.Longitude) * (p.Latitude - r.Latitude))
{
lowerHull.RemoveAt(lowerHull.Count - 1);
}
else
{
break;
}
}
lowerHull.Add(p);
}
lowerHull.RemoveAt(lowerHull.Count - 1);
if (!(upperHull.Count == 1 && Enumerable.SequenceEqual(upperHull, lowerHull)))
{
upperHull.AddRange(lowerHull);
upperHull.Add(SelectHull[0]);
}
return(upperHull);
}
