Main Page   Class Hierarchy   Alphabetical List   Compound List   File List   Compound Members   File Members   Related Pages  

vtkEdgeTable Class Reference

keep track of edges (edge is pair of integer id's). More...

#include <vtkEdgeTable.h>

Inheritance diagram for vtkEdgeTable:

Inheritance graph
[legend]
Collaboration diagram for vtkEdgeTable:

Collaboration graph
[legend]
List of all members.

Public Methods

virtual const char * GetClassName ()
virtual int IsA (const char *type)
void PrintSelf (ostream &os, vtkIndent indent)
void Initialize ()
int InitEdgeInsertion (vtkIdType numPoints, int storeAttributes=0)
vtkIdType InsertEdge (vtkIdType p1, vtkIdType p2)
void InsertEdge (vtkIdType p1, vtkIdType p2, int attributeId)
int IsEdge (vtkIdType p1, vtkIdType p2)
int InitPointInsertion (vtkPoints *newPts, vtkIdType estSize)
void InitTraversal ()
int GetNextEdge (vtkIdType &p1, vtkIdType &p2)
void Reset ()
int InsertUniquePoint (vtkIdType p1, vtkIdType p2, float x[3], vtkIdType &ptId)
virtual vtkIdType GetNumberOfEdges ()

Static Public Methods

vtkEdgeTable * New ()
int IsTypeOf (const char *type)
vtkEdgeTable * SafeDownCast (vtkObject *o)

Protected Methods

 vtkEdgeTable ()
 ~vtkEdgeTable ()
vtkIdList ** Resize (vtkIdType size)

Protected Attributes

vtkIdList ** Table
vtkIdList ** Attributes
int StoreAttributes
vtkIdType TableMaxId
vtkIdType TableSize
int Position [2]
int Extend
vtkIdType NumberOfEdges
vtkPointsPoints

Detailed Description

keep track of edges (edge is pair of integer id's).

Date:
2001/10/11 13:36:10
Revision:
1.29

vtkEdgeTable is a general object for keeping track of lists of edges. An edge is defined by the pair of point id's (p1,p2). Methods are available to insert edges, check if edges exist, and traverse the list of edges. Also, it's possible to associate attribute information with each edge.

Definition at line 60 of file vtkEdgeTable.h.


Constructor & Destructor Documentation

vtkEdgeTable::vtkEdgeTable   [protected]
 

vtkEdgeTable::~vtkEdgeTable   [protected]
 


Member Function Documentation

vtkEdgeTable* vtkEdgeTable::New   [static]
 

Instantiate object assuming that 1000 edges are to be inserted.

Reimplemented from vtkObject.

virtual const char* vtkEdgeTable::GetClassName   [virtual]
 

Return the class name as a string. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkObject.

int vtkEdgeTable::IsTypeOf const char *    type [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 vtkObject.

virtual int vtkEdgeTable::IsA const char *    type [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 vtkObject.

vtkEdgeTable* vtkEdgeTable::SafeDownCast vtkObject   o [static]
 

Will cast the supplied object to vtkObject* is this is a safe operation (i.e., a safe downcast); otherwise NULL is returned. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkObject.

void vtkEdgeTable::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 vtkObject.

void vtkEdgeTable::Initialize  
 

Free memory and return to instantiated state.

int vtkEdgeTable::InitEdgeInsertion vtkIdType    numPoints,
int    storeAttributes = 0
 

Initialize the edge insertion process. Provide an estimate of the number of points in a dataset (the maximum range value of p1 or p2). The storeAttributes variable controls whether attributes are to be stored with the edge. If on, additional memory will be required by the data structure to store an integer id per each edge. This method is used in conjunction with one of the two InsertEdge() methods described below (don't mix the InsertEdge() methods).

vtkIdType vtkEdgeTable::InsertEdge vtkIdType    p1,
vtkIdType    p2
 

Insert the edge (p1,p2) into the table. It is the user's responsibility to check if the edge has already been inserted (use IsEdge()). If the storeAttributes flag in InitEdgeInsertion() has been set, then the method returns a unique integer id (i.e., the edge id) that can be used to set and get edge attributes. Otherwise, the method will return 1. Do not mix this method with the InsertEdge() method that follows.

void vtkEdgeTable::InsertEdge vtkIdType    p1,
vtkIdType    p2,
int    attributeId
 

Insert the edge (p1,p2) into the table with the attribute id specified (make sure the attributeId >= 0). Note that the attributeId is ignored if the storeAttributes variable was set to 0 in the InitEdgeInsertion() method. It is the user's responsibility to check if the edge has already been inserted (use IsEdge()). Do not mix this method with the previous InsertEdge() method.

int vtkEdgeTable::IsEdge vtkIdType    p1,
vtkIdType    p2
 

Return an integer id for the edge, or an attributeId of the edge (p1,p2) if the edge has been previously defined (it depends upon which version of InsertEdge() is being used); otherwise -1. The unique integer id can be used to set and retrieve attributes to the edge.

int vtkEdgeTable::InitPointInsertion vtkPoints   newPts,
vtkIdType    estSize
 

Initialize the point insertion process. The newPts is an object representing point coordinates into which incremental insertion methods place their data. The points are associated with the edge.

int vtkEdgeTable::InsertUniquePoint vtkIdType    p1,
vtkIdType    p2,
float    x[3],
vtkIdType   ptId
 

Insert a unique point on the specified edge. Invoke this method only after InitPointInsertion() has been called. Return 0 if point was already in the list, otherwise return 1.

virtual vtkIdType vtkEdgeTable::GetNumberOfEdges   [virtual]
 

Return the number of edges that have been inserted thus far.

void vtkEdgeTable::InitTraversal  
 

Intialize traversal of edges in table.

int vtkEdgeTable::GetNextEdge vtkIdType   p1,
vtkIdType   p2
 

Traverse list of edges in table. Return the edge as (p1,p2), where p1 and p2 are point id's. Method return value is zero if list is exhausted; non-zero otherwise. The value of p1 is guaranteed to be <= p2.

void vtkEdgeTable::Reset  
 

Reset the object and prepare for reinsertion of edges. Does not delete memory like the Initialize() method.

vtkIdList** vtkEdgeTable::Resize vtkIdType    size [protected]
 


Member Data Documentation

vtkIdList** vtkEdgeTable::Table [protected]
 

Definition at line 140 of file vtkEdgeTable.h.

vtkIdList** vtkEdgeTable::Attributes [protected]
 

Definition at line 141 of file vtkEdgeTable.h.

int vtkEdgeTable::StoreAttributes [protected]
 

Definition at line 142 of file vtkEdgeTable.h.

vtkIdType vtkEdgeTable::TableMaxId [protected]
 

Definition at line 143 of file vtkEdgeTable.h.

vtkIdType vtkEdgeTable::TableSize [protected]
 

Definition at line 144 of file vtkEdgeTable.h.

int vtkEdgeTable::Position[2] [protected]
 

Definition at line 145 of file vtkEdgeTable.h.

int vtkEdgeTable::Extend [protected]
 

Definition at line 146 of file vtkEdgeTable.h.

vtkIdType vtkEdgeTable::NumberOfEdges [protected]
 

Definition at line 147 of file vtkEdgeTable.h.

vtkPoints* vtkEdgeTable::Points [protected]
 

Definition at line 148 of file vtkEdgeTable.h.


The documentation for this class was generated from the following file:
Generated on Thu Mar 28 14:29:01 2002 for VTK by doxygen1.2.11.1 written by Dimitri van Heesch, © 1997-2001