/// <summary>
/// Queries the specified search extent. If this node is completely
/// enclosed by the search extent, the <see cref="PassAll"/> method gets
/// called to process all points with no further spatial checks. For
/// nodes that partially overlap, each point is checked against the
/// search extent.
/// </summary>
/// <param name="searchExtent">The search extent.</param>
/// <param name="itemHandler">The method that should be called for each query hit (any
/// node with an extent that overlaps the query window)</param>
internal override void Query(Extent searchExtent, ProcessItem itemHandler)
{
if (this.Window.IsOverlap(searchExtent))
{
if (this.Window.IsEnclosedBy(searchExtent))
{
PassAll(itemHandler);
}
else
{
foreach (IPoint p in m_Items)
{
if (searchExtent.IsOverlap(p.Geometry))
{
bool keepGoing = itemHandler(p);
if (!keepGoing)
{
return;
}
}
}
}
}
}