public override bool hasNext()
{
if (istructure == structureCount)
return false;
structure = structures[istructure++];
return true;
}
internal virtual void addStructure(Structure structure)
{
if (structureCount == structures.Length)
structures = (Structure[])AtomSetCollectionReader.setLength(structures, structureCount + 32);
structures[structureCount++] = structure;
}