public static BoundingBox GetCenterPhotoData(int currentlevel, int level)
{
EasyMap.Geometries.Point center = Map.Center;
int rootlevel = level / 4 + 1;
TreeNode node = _PhotoRoot;
DataTable table = MapDBClass.GetCenterTifInformation(center.X, center.Y);
bool find = false;
PhotoData data = new PhotoData();
for (int i = 0; i < table.Rows.Count; i++)
{
string name = table.Rows[i]["Name"] as string;
node = FindNode(_PhotoRoot, name);
PhotoData tempdata = null;
if (node != null)
{
if (node.Parent != null)
{
tempdata = node.Parent.Tag as PhotoData;
}
}
if (node != null && (node.Level == rootlevel || (tempdata != null && (tempdata.FileName == "" || tempdata.FileName == null) && node.Level - 1 == rootlevel)))
{
data.PhotoId = (int)table.Rows[i]["PhotoId"];
data.Name = (string)table.Rows[i]["Name"];
data.FileName = (string)table.Rows[i]["FileName"];
data.MinX = (double)table.Rows[i]["MinX"];
data.MinY = (double)table.Rows[i]["MinY"];
data.MaxX = (double)table.Rows[i]["MaxX"];
data.MaxY = (double)table.Rows[i]["MaxY"];
data.Transform1 = (double)table.Rows[i]["Transform1"];
data.Transform2 = (double)table.Rows[i]["Transform2"];
data.Transform3 = (double)table.Rows[i]["Transform3"];
data.Transform4 = (double)table.Rows[i]["Transform4"];
data.Transform5 = (double)table.Rows[i]["Transform5"];
data.Transform6 = (double)table.Rows[i]["Transform6"];
data.Width = (int)table.Rows[i]["Width"];
data.Height = (int)table.Rows[i]["Height"];
find = true;
break;
}
}
if (!find)
{
return(Map.Envelope);
}
int step = -100;
if (currentlevel < level)
{
step = -100;
}
int overviewlevel = 0;
int overviewzoom = 0;
find = false;
BoundingBox box = Map.Envelope;
box = new BoundingBox(box.Min.X, box.Min.Y, box.Max.X, box.Max.Y);
if (currentlevel < level)
{
while (overviewlevel != (4 - level % 4) && box.Min.X < box.Max.X && box.Min.Y < box.Max.Y)
{
box.Min.X -= step;
box.Min.Y -= step;
box.Max.X += step;
box.Max.Y += step;
find = SetOverView(data, out overviewlevel, out overviewzoom);
}
}
else
{
BoundingBox maxbox = Map.GetExtents();
while (overviewlevel != (4 - level % 4) && box.Min.X > maxbox.Min.X && box.Min.Y > maxbox.Min.Y && box.Max.X < maxbox.Max.X && box.Max.Y < maxbox.Max.Y)
{
box.Min.X -= step;
box.Min.Y -= step;
box.Max.X += step;
box.Max.Y += step;
find = SetOverView(data, out overviewlevel, out overviewzoom);
}
}
return(box);
}