private SbnFeature[] ReadBins(int nid, SbnBinIndex binIndex)
{
var numFeatures = binIndex.GetNumFeatures(nid);
var res = new SbnFeature[numFeatures];
if (numFeatures == 0)
{
return(res);
}
var firstBinIndex = binIndex.GetFirstBinIndex(nid);
var numBins = (int)Math.Ceiling(numFeatures / 100d);
for (var i = 0; i < numBins; i++)
{
using (var ms = new BinaryReader(new MemoryStream(_tree.GetBinData(firstBinIndex + i))))
{
var bin = new SbnBin();
var binId = bin.Read(ms);
if (binId != firstBinIndex + i)
{
throw new SbnException("Corrupt sbn file");
}
bin.CopyTo(res, i * 100);
}
}
return(res);
}
internal void RemoveFeature(SbnFeature feature)
{
var index = FindFeature(feature);
if (index >= 0)
{
RemoveAt(index);
}
}
/// <summary>
/// Method to insert a feature to the tree
/// </summary>
/// <param name="feature"></param>
internal void Insert(SbnFeature feature)
{
// Insert a feature into the tree
Root.Insert(feature);
#if (NET40 || NET45)
_featureIds.Add(feature.Fid);
#else
_featureIds.Add(feature.Fid, 0);
#endif
}
private int FindFeature(SbnFeature feature)
{
for (var i = 0; i < NumFeatures; i++)
{
if (this[i].Equals(feature))
{
return(i);
}
}
return(-1);
}
/// <summary>
/// Method to remove the feature <paramref name="fid"/>
/// </summary>
/// <param name="fid">The id of the feature</param>
/// <param name="envelope">The envelope in which to search for the feature</param>
#pragma warning disable 3001
public void Remove(uint fid, Envelope envelope = null)
#pragma warning restore 3001
{
Monitor.Enter(_syncRoot);
envelope = envelope ?? _header.Extent;
var searchFeature = new SbnFeature(_header, fid, envelope);
Root.Remove(searchFeature);
Monitor.Exit(_syncRoot);
}
private void ReadBuffer(BinaryReader reader)
{
using (var msReader = new BinaryReader(new MemoryStream(reader.ReadBytes(NumFeatures * 8))))
{
for (var i = 0; i < NumFeatures; i++)
{
_features[i] = new SbnFeature(msReader);
}
}
//reader.BaseStream.Read(_buffer, 0, NumFeatures*8);
//for (var i = 0; i < NumFeatures; i++)
// Array.Reverse(_buffer, 4+8*i, 4);
}
internal void RemoveAt(int index)
{
if (index < NumFeatures - 1)
{
var max = NumFeatures - 1;
for (var i = index; i < max; i++)
{
_features[i] = _features[i + 1];
}
if (_next != null)
{
_features[99] = _next[0];
_next.RemoveAt(0);
}
else
{
_features[max] = new SbnFeature();
NumFeatures--;
}
}
else
{
_features[index] = new SbnFeature();
NumFeatures--;
}
//var offset = index * 8;
//var size = 800 - 8 - offset;
//if (size > 0)
//{
// //Buffer.BlockCopy(_buffer, offset + 8, _buffer, offset, size);
// if (Next != null)
// {
// this[99] = Next[0];
// Next.RemoveFeature(Next[0]);
// }
// else
// {
// Buffer.BlockCopy(BitConverter.GetBytes((long)0), 0, _buffer, NumFeatures * 8, 8);
// NumFeatures--;
// }
//}
}
/// <summary>
/// Method to -inplace- rebuild the tree
/// </summary>
/// <param name="featureCount">The number of features for the tree</param>
/// <param name="newFeature">The new feature to add</param>
private void RebuildTree(int featureCount, SbnFeature newFeature)
{
var nodes = Nodes;
_featureIds.Clear();
BuildTree(featureCount);
for (var i = 1; i < nodes.Length; i++)
{
foreach (var feature in nodes[i])
{
Insert(feature);
}
}
Insert(newFeature);
CompactSeamFeatures();
}
internal void AddFeature(SbnFeature feature)
{
this[NumFeatures++] = feature;
}