C# Class Mapsui.Providers.Shapefile.Indexing.QuadTree

Constructs a Quad-tree node from a object list and creates its children recursively

Inheritance: IDisposable

Exibir arquivo Open project: pauldendulk/Mapsui Class Usage Examples

Public Methods

Method	Description
Dispose ( ) : void	Disposes the node
ErrorMetric ( BoundingBox box ) : double	Calculate the floating point error metric
FromFile ( string filename ) : QuadTree	Loads a quadtree from a file
QuadTree ( List objList, uint depth, Heuristic heurdata ) : System	Creates a node and either splits the objects recursively into sub-nodes, or stores them at the node depending on the heuristics. Tree is built top->down
SaveIndex ( string filename ) : void	Saves the Quadtree to a file
Search ( BoundingBox box ) : Collection	Searches the tree and looks for intersections with the boundingbox 'bbox'

Private Methods

Method	Description
IntersectTreeRecursive ( BoundingBox box, QuadTree node, Collection &list ) : void	Recursive function that traverses the tree and looks for intersections with a boundingbox
QuadTree ( ) : System	This instantiator is used internally for loading a tree from a file
ReadNode ( uint depth, BinaryReader &br ) : QuadTree	Reads a node from a stream recursively
SaveNode ( QuadTree node, BinaryWriter &sw ) : void	Saves a node to a stream recursively

Method Details

Dispose() public method

Disposes the node

public Dispose ( ) : void
return	void

ErrorMetric() public method

Calculate the floating point error metric

public ErrorMetric ( BoundingBox box ) : double
box	BoundingBox
return	double

FromFile() public static method

Loads a quadtree from a file

public static FromFile ( string filename ) : QuadTree
filename	string
return	QuadTree

QuadTree() public method

Creates a node and either splits the objects recursively into sub-nodes, or stores them at the node depending on the heuristics. Tree is built top->down

public QuadTree ( List objList, uint depth, Heuristic heurdata ) : System
objList	List	Geometries to index
depth	uint	Current depth of tree
heurdata	Heuristic	Heuristics data
return	System

SaveIndex() public method

Saves the Quadtree to a file

public SaveIndex ( string filename ) : void
filename	string
return	void

Search() public method

Searches the tree and looks for intersections with the boundingbox 'bbox'

public Search ( BoundingBox box ) : Collection
box	BoundingBox	Boundingbox to intersect with
return	Collection