/// <summary>
/// Processes circles that overlap the specified window.
/// Used by <c>FindCirclesQuery</c> to execute the query.
/// </summary>
/// <param name="extent">The query extent</param>
/// <param name="itemHandler">Delegate for processing each query hit</param>
internal void FindCircles(IWindow extent, ProcessItem itemHandler)
{
m_ExtraData.QueryWindow(extent, SpatialType.Line, itemHandler);
}