/// <summary>
/// Adds an entry to this index bucket, without making a copy.
/// </summary>
/// <param name="entry">An index entry</param>
public void AddEntry(IndexEntry entry)
{
entries.Add(entry);
}
private bool Covered(IndexEntry entry)
{
foreach (PruningRegion pruneReg in pruneRegs)
{
if (pruneReg.Covers(entry.MBR))
return true;
}
return false;
}
private List<PruningRegion> MakePruneRegs(IndexEntry entry)
{
int dimension = entry.MBR.Dimensions;
Orthotope bounds = entry.MBR;
List<PruningRegion> pruneRegs = new List<PruningRegion>();
for (int i = 0; i < dimension; i++)
{
Point pivot = new Point(dimension);
for (int j = 0; j < dimension; j++)
{
if (i == j)
{
if (pref[j] == PrefSpec.Min)
pivot[j] = bounds.Max[j];
else
pivot[j] = bounds.Min[j];
}
else
{
if (pref[j] == PrefSpec.Min)
pivot[j] = bounds.Min[j];
else
pivot[j] = bounds.Max[j];
}
}
PruningRegion pruneReg = new PruningRegion(pivot, pref);
//Check if the new pruning region is covered
bool covered = false;
foreach (PruningRegion p in this.pruneRegs)
{
if (p.Covers(pruneReg))
{
covered = true;
break;
}
}
if(!covered)
pruneRegs.Add(pruneReg);
}
return pruneRegs;
}
