VTK
Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes
vtkTree Class Reference

A rooted tree data structure. More...

#include <vtkTree.h>

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List of all members.

Public Types

typedef vtkDirectedAcyclicGraph Superclass

Public Member Functions

virtual const char * GetClassName ()
virtual int IsA (const char *type)
void PrintSelf (ostream &os, vtkIndent indent)
virtual int GetDataObjectType ()
vtkIdType GetChild (vtkIdType v, vtkIdType i)
vtkIdType GetParent (vtkIdType v)
vtkIdType GetLevel (vtkIdType v)
bool IsLeaf (vtkIdType vertex)
virtual void ReorderChildren (vtkIdType parent, vtkIdTypeArray *children)
virtual vtkIdType GetRoot ()
vtkIdType GetNumberOfChildren (vtkIdType v)
void GetChildren (vtkIdType v, vtkAdjacentVertexIterator *it)
vtkEdgeType GetParentEdge (vtkIdType v)

Static Public Member Functions

static vtkTreeNew ()
static int IsTypeOf (const char *type)
static vtkTreeSafeDownCast (vtkObject *o)
static vtkTreeGetData (vtkInformation *info)
static vtkTreeGetData (vtkInformationVector *v, int i=0)

Protected Member Functions

 vtkTree ()
 ~vtkTree ()
virtual bool IsStructureValid (vtkGraph *g)

Protected Attributes

vtkIdType Root

Detailed Description

A rooted tree data structure.

vtkTree is a connected directed graph with no cycles. A tree is a type of directed graph, so works with all graph algorithms.

vtkTree is a read-only data structure. To construct a tree, create an instance of vtkMutableDirectedGraph. Add vertices and edges with AddVertex() and AddEdge(). You may alternately start by adding a single vertex as the root then call graph->AddChild(parent) which adds a new vertex and connects the parent to the child. The tree MUST have all edges in the proper direction, from parent to child. After building the tree, call tree->CheckedShallowCopy(graph) to copy the structure into a vtkTree. This method will return false if the graph is an invalid tree.

vtkTree provides some convenience methods for obtaining the parent and children of a vertex, for finding the root, and determining if a vertex is a leaf (a vertex with no children).

See also:
vtkDirectedGraph vtkMutableDirectedGraph vtkGraph
Examples:
vtkTree (Examples)
Tests:
vtkTree (Tests)

Definition at line 58 of file vtkTree.h.


Member Typedef Documentation

Reimplemented from vtkDirectedAcyclicGraph.

Definition at line 62 of file vtkTree.h.


Constructor & Destructor Documentation

vtkTree::vtkTree ( ) [protected]
vtkTree::~vtkTree ( ) [protected]

Member Function Documentation

static vtkTree* vtkTree::New ( ) [static]

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

Reimplemented from vtkDirectedAcyclicGraph.

virtual const char* vtkTree::GetClassName ( ) [virtual]

Reimplemented from vtkDirectedAcyclicGraph.

static int vtkTree::IsTypeOf ( const char *  name) [static]

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkDirectedAcyclicGraph.

virtual int vtkTree::IsA ( const char *  name) [virtual]

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkDirectedAcyclicGraph.

static vtkTree* vtkTree::SafeDownCast ( vtkObject o) [static]

Reimplemented from vtkDirectedAcyclicGraph.

void vtkTree::PrintSelf ( ostream &  os,
vtkIndent  indent 
) [virtual]

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkDirectedAcyclicGraph.

virtual int vtkTree::GetDataObjectType ( ) [inline, virtual]

Return what type of dataset this is.

Reimplemented from vtkDirectedAcyclicGraph.

Definition at line 66 of file vtkTree.h.

virtual vtkIdType vtkTree::GetRoot ( ) [virtual]

Get the root vertex of the tree.

vtkIdType vtkTree::GetNumberOfChildren ( vtkIdType  v) [inline]

Get the number of children of a vertex.

Definition at line 75 of file vtkTree.h.

vtkIdType vtkTree::GetChild ( vtkIdType  v,
vtkIdType  i 
)

Get the i-th child of a parent vertex.

void vtkTree::GetChildren ( vtkIdType  v,
vtkAdjacentVertexIterator it 
) [inline]

Get the child vertices of a vertex. This is a convenience method that functions exactly like GetAdjacentVertices.

Definition at line 85 of file vtkTree.h.

vtkIdType vtkTree::GetParent ( vtkIdType  v)

Get the parent of a vertex.

vtkEdgeType vtkTree::GetParentEdge ( vtkIdType  v)

Get the edge connecting the vertex to its parent.

vtkIdType vtkTree::GetLevel ( vtkIdType  v)

Get the level of the vertex in the tree. The root vertex has level 0. Returns -1 if the vertex id is < 0 or greater than the number of vertices in the tree.

bool vtkTree::IsLeaf ( vtkIdType  vertex)

Return whether the vertex is a leaf (i.e. it has no children).

static vtkTree* vtkTree::GetData ( vtkInformation info) [static]

Retrieve a graph from an information vector.

Reimplemented from vtkDirectedAcyclicGraph.

static vtkTree* vtkTree::GetData ( vtkInformationVector v,
int  i = 0 
) [static]

Retrieve a graph from an information vector.

Reimplemented from vtkDirectedAcyclicGraph.

virtual void vtkTree::ReorderChildren ( vtkIdType  parent,
vtkIdTypeArray children 
) [virtual]

Reorder the children of a parent vertex. The children array must contain all the children of parent, just in a different order. This does not change the topology of the tree.

virtual bool vtkTree::IsStructureValid ( vtkGraph g) [protected, virtual]

Check the storage, and accept it if it is a valid tree.

Reimplemented from vtkDirectedAcyclicGraph.


Member Data Documentation

vtkIdType vtkTree::Root [protected]

The root of the tree.

Definition at line 128 of file vtkTree.h.


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