private void RedrawVertexes(ScreenRectangle localScreenView)
{
try
{
_lockVr.EnterReadLock();
if (_rVertexTree.NodeCount == 0)
{
return;
}
var res = _rVertexTree.Query(localScreenView);
foreach (var node in res)
{
var row = (MapDb.VertexesRow)node.Row;
var coordinate = new GeomCoordinate(row.Longitude, row.Latitude);
var pt = coordinate.GetScreenPoint(localScreenView);
DrawBitmap(Vertex, Point.Subtract(pt, HalfVertexSize));
if (Level >= 14)
{
var caption = row.Caption;
if (!String.IsNullOrEmpty(caption))
{
DrawString(caption, HalfVertexSize.Height, Point.Add(pt, HalfVertexSize));
}
}
}
}
catch (Exception ex)
{
//do nothing
System.Diagnostics.Trace.WriteLine(ex.Message);
}
finally
{
_lockVr.ExitReadLock();
}
}