/// <summary>
/// Method to query the feature's ids
/// </summary>
/// <param name="envelope">The extent in which to look for features</param>
/// <returns>An enumeration of feature ids</returns>
public IEnumerable <uint> QueryFids(Envelope envelope)
{
if (envelope == null || envelope.IsNull)
{
return(null);
}
envelope = envelope.Intersection(_sbnHeader.Extent);
var res = new List <uint>();
if (envelope.IsNull)
{
return(res);
}
byte minx, miny, maxx, maxy;
ClampUtility.Clamp(_sbnHeader.Extent, envelope, out minx, out miny, out maxx, out maxy);
var nodes = new List <SbnQueryOnlyNode>();
Root.QueryNodes(minx, miny, maxx, maxy, nodes);
nodes.Sort();
foreach (var node in nodes)
{
node.QueryFids(minx, miny, maxx, maxy, res, false);
}
//Root.QueryFids(minx, miny, maxx, maxy, res);
res.Sort();
return(res);
}
/// <summary>
/// Method to query the ids of features that intersect with <paramref name="extent"/>
/// </summary>
/// <param name="extent">The extent</param>
/// <returns>An enumeration of feature ids</returns>
public IEnumerable <uint> QueryFids(Envelope extent)
{
var res = new List <uint>();
Monitor.Enter(_syncRoot);
extent = _header.Extent.Intersection(extent);
byte minx, miny, maxx, maxy;
ClampUtility.Clamp(_header.Extent, extent,
out minx, out miny, out maxx, out maxy);
Root.QueryFids(minx, miny, maxx, maxy, res);
Monitor.Exit(_syncRoot);
res.Sort();
return(res);
}
/// <summary>
/// Creates an instance of this class using the provided <paramref name="fid"/> and <paramref name="extent"/>
/// </summary>
/// <param name="sfExtent">The extent of the index</param>
/// <param name="fid">The feature's id</param>
/// <param name="extent">The feature's extent</param>
public SbnFeature(Envelope sfExtent, uint fid, Envelope extent)
{
_fid = fid;
ClampUtility.Clamp(sfExtent, extent, out MinX, out MinY, out MaxX, out MaxY);
}