/// <summary>
/// 查询布控
/// </summary>
/// <param name="data">坐标集合</param>
public void QueryMarkArea(string data)
{
List <PointF> points = new List <PointF>();
object pointList = JSONToObject <object>(data);
Array aPoint = (Array)pointList;
for (int i = 0; i < aPoint.Length; i++)
{
Dictionary <string, object> spoint = (Dictionary <string, object>)aPoint.GetValue(i);
PointF PF = new PointF();
foreach (KeyValuePair <string, object> kv in spoint)
{
if (kv.Key == "lng")
{
PF.X = float.Parse(kv.Value.ToString());
}
else if (kv.Key == "lat")
{
PF.Y = float.Parse(kv.Value.ToString());
}
}
points.Add(PF);
}
PointF center = new PointF();
PointF maxCenter = new PointF();
double area = 0;
double maxLength = 0;
float maxX = 0;
List <double> lengths = new List <double>();
int s = polyCentriod(points, points.Count, ref center, ref area);
for (int i = 0; i < points.Count; i++)
{
double l = GetDistance(points[i].Y, points[i].X, center.Y, center.X);
lengths.Add(l);
if (l > maxLength)
{
maxLength = l;
maxCenter = points[i];
}
if (points[i].X > maxX)
{
maxX = points[i].X;
}
}
double Maxl = Math.Sqrt(Math.Abs(maxCenter.X - center.X) * Math.Abs(maxCenter.X - center.X) + Math.Abs(maxCenter.Y - center.Y) * Math.Abs(maxCenter.Y - center.Y)) * 10000;
string where1 = "sqrt(pow((x_values-" + center.X.ToString() + "),2)+pow((y_values-" + center.Y.ToString() + "),2))*10000 < " + Maxl.ToString();
//DataTable dt = Dt_Station;// this.bll.GetStation();
DataTable dtOut;
if (Dt_Station != null)
{
dtOut = Dt_Station.Copy();
}
else
{
return;
}
PointF QueryPoint = new PointF();
Hashtable hs = new Hashtable();
for (int n = dtOut.Rows.Count - 1; n >= 0; n--)
{
if (dtOut.Rows[n]["xpoint"].ToString() != "")
{
QueryPoint.X = float.Parse(dtOut.Rows[n]["xpoint"].ToString());
QueryPoint.Y = float.Parse(dtOut.Rows[n]["ypoint"].ToString());
if (!IsVisible(QueryPoint, points, maxX))
{
dtOut.Rows[n].Delete();
dtOut.AcceptChanges();
}
}
else
{
dtOut.Rows[n].Delete();
dtOut.AcceptChanges();
}
}
if (dtOut != null && dtOut.Rows.Count > 0)
{
showstation(dtOut);
StoreKK.RemoveAll();
StoreKK.DataSource = dtOut;
StoreKK.DataBind();
panelkk.Collapsed = false;
Pantrack.Height = 550;
}
else
{
//panelkk.Collapsed = true;
Pantrack.Height = 240;
StoreKK.RemoveAll();
StoreKK.DataBind();
}
}
/// <summary>
/// 依据坐标点获取监测点
/// </summary>
/// <param name="xpos">x坐标</param>
/// <param name="ypos">y坐标</param>
/// <param name="r">半径</param>
public void QueryMarkArea(string xpos, string ypos, int r)
{
try
{
PointF dot = new PointF();
dot.X = float.Parse(xpos);
dot.Y = float.Parse(ypos);
DataTable dt = bll.GetStation();
DataTable dtOut;
if (dt != null)
{
dtOut = dt.Copy();
}
else
{
return;
}
PointF QueryPoint = new PointF();
Hashtable hs = new Hashtable();
double l;
for (int n = dtOut.Rows.Count - 1; n >= 0; n--)
{
if (dtOut.Rows[n]["xpoint"].ToString() == "" || dtOut.Rows[n]["ypoint"].ToString() == "")
{
dtOut.Rows[n].Delete();
dtOut.AcceptChanges();
continue;
}
QueryPoint.X = float.Parse(dtOut.Rows[n]["xpoint"].ToString());
QueryPoint.Y = float.Parse(dtOut.Rows[n]["ypoint"].ToString());
l = GetDistance(QueryPoint.X, QueryPoint.Y, dot.X, dot.Y);
if (l > r)
{
dtOut.Rows[n].Delete();
dtOut.AcceptChanges();
}
}
if (dtOut != null && dtOut.Rows.Count > 0)
{
showstation(dtOut);
StoreKK.RemoveAll();
StoreKK.DataSource = dtOut;
StoreKK.DataBind();
panelkk.Collapsed = false;
Pantrack.Height = 800;
}
else
{
//panelkk.Collapsed = true;
Pantrack.Height = 240;
StoreKK.RemoveAll();
StoreKK.DataBind();
}
}
catch (Exception ex)
{
ILog.WriteErrorLog(ex.Message);
logManager.InsertLogError("CarStrandQuery.aspx-QueryMarkArea", ex.Message + "；" + ex.StackTrace, "QueryMarkArea has an exception");
}
}
