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);
}
/// <summary>
/// Creates an istance of this class
/// </summary>
/// <param name="sbnFilename"></param>
/// <param name="sbxFilename"></param>
private SbnQueryOnlyTree(string sbnFilename, string sbxFilename)
{
_sbnStream = new FileStream(sbnFilename, FileMode.Open, FileAccess.Read, FileShare.Read, 8192);
_sbnHeader = new SbnHeader();
var sbnReader = new BinaryReader(_sbnStream);
_sbnHeader.Read(sbnReader);
_sbnBinIndex = SbnBinIndex.Read(sbnReader);
_sbxStream = new FileStream(sbxFilename, FileMode.Open, FileAccess.Read, FileShare.Read, 8192);
FirstLeafNodeId = (int)Math.Pow(2, GetNumberOfLevels(_sbnHeader.NumRecords) - 1);
MaxCacheLevel = DefaultMaxCacheLevel;
SbnQueryOnlyNode.CreateRoot(this);
_sbxStream.Position = 0;
}
