/// <summary>
/// Collects all values in the specific range of the subtree rooted at the specified node.
/// </summary>
/// <param name="range">The range.</param>
/// <param name="node">The root of the subtree to search within.</param>
/// <param name="dimension">The dimension of which the specified node belongs to.</param>
/// <param name="matchingItems">The items which are found to be in the specified range are placed in this list.</param>
private void CollectAllInRange(MultiDimensionalRange <T> range, Node node, int dimension, List <T> matchingItems)
{
if (node == null)
{
return;
}
int minRangeComparison = range.CompareTo(node.Min, dimension);
int maxRangeComparison = range.CompareTo(node.Max, dimension);
if (minRangeComparison == 0 && maxRangeComparison == 0)
{
// The node's range is fully contained within the search range.
if (dimension == this.DimensionCount - 1)
{
// This is the last dimension so collect all of the values in this subtree.
CollectAllValues(node, matchingItems);
}
else
{
// Continue searching in the next dimension.
CollectAllInRange(range, node.NextDimensionRoot, dimension + 1, matchingItems);
}
}
else if (minRangeComparison <= 0 || minRangeComparison >= 0)
{
// The node's range intersects the search range so continue searching all of the children.
CollectAllInRange(range, node.LeftChild, dimension, matchingItems);
CollectAllInRange(range, node.RightChild, dimension, matchingItems);
}
}
/// <summary>
/// Gets all items in the specified range.
/// </summary>
/// <param name="range">The range.</param>
/// <returns>The items in the specified range.</returns>
public List <T> GetAllInRange(MultiDimensionalRange <T> range)
{
List <T> matchingItems = new List <T>();
CollectAllInRange(range, m_root, 0, matchingItems);
return(matchingItems);
}