/// <summary>
///
/// </summary>
/// <param name="node"></param>
/// <param name="addEnv"></param>
/// <returns></returns>
public static Node CreateExpanded(Node node, IEnvelope addEnv)
{
Envelope expandEnv = new Envelope(addEnv);
if (node != null)
{
expandEnv.ExpandToInclude(node._env);
}
Node largerNode = CreateNode(expandEnv);
if (node != null)
{
largerNode.InsertNode(node);
}
return(largerNode);
}
/// <summary>
///
/// </summary>
/// <param name="node"></param>
public virtual void InsertNode(Node node)
{
Assert.IsTrue(_env == null || _env.Contains(node.Envelope));
int index = GetSubnodeIndex(node._env, _centre);
if (node._level == _level - 1)
{
Nodes[index] = node;
}
else
{
// the quad is not a direct child, so make a new child quad to contain it
// and recursively insert the quad
Node childNode = CreateSubnode(index);
childNode.InsertNode(node);
Nodes[index] = childNode;
}
}