GEOS 3.13.1
geos::index::quadtree::NodeBase Class Referenceabstract

The base class for nodes in a Quadtree. More...

#include <NodeBase.h>

Inheritance diagram for geos::index::quadtree::NodeBase:
geos::index::quadtree::Node geos::index::quadtree::Root

Public Member Functions

std::vector< void * > & getItems ()
void add (void *item)
std::vector< void * > & addAllItems (std::vector< void * > &resultItems) const
 Push all node items to the given vector, return the argument.
virtual void addAllItemsFromOverlapping (const geom::Envelope &searchEnv, std::vector< void * > &resultItems) const
unsigned int depth () const
std::size_t size () const
std::size_t getNodeCount () const
virtual std::string toString () const
virtual void visit (const geom::Envelope *searchEnv, ItemVisitor &visitor)
bool remove (const geom::Envelope *itemEnv, void *item)
bool hasItems () const
bool hasChildren () const
bool isPrunable () const

Static Public Member Functions

static int getSubnodeIndex (const geom::Envelope *env, const geom::Coordinate &centre)

Protected Member Functions

virtual bool isSearchMatch (const geom::Envelope &searchEnv) const =0

Protected Attributes

std::vector< void * > items
 Actual items are NOT owned by this class.
std::array< Node *, 4 > subnodes

Detailed Description

The base class for nodes in a Quadtree.

Member Function Documentation

◆ add()

void geos::index::quadtree::NodeBase::add ( void * item)

Add an item to this node. Ownership of the item is left to caller.

◆ remove()

bool geos::index::quadtree::NodeBase::remove ( const geom::Envelope * itemEnv,
void * item )

Removes a single item from this subtree.

Parameters
itemEnvthe envelope containing the item
itemthe item to remove
Returns
true if the item was found and removed

Member Data Documentation

◆ subnodes

std::array<Node*, 4> geos::index::quadtree::NodeBase::subnodes
protected

subquads are numbered as follows:

 2 | 3
 --+--
 0 | 1

Nodes are owned by this class


The documentation for this class was generated from the following file: