layout a vtkTree into packed circles using the front chain algorithm. More...

#include <vtkCirclePackFrontChainLayoutStrategy.h>

Inheritance diagram for vtkCirclePackFrontChainLayoutStrategy:

Collaboration diagram for vtkCirclePackFrontChainLayoutStrategy:

Public Types
typedef vtkCirclePackLayoutStrategy	Superclass
Public Types inherited from vtkCirclePackLayoutStrategy
Public Types inherited from vtkObject

Public Member Functions
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)

virtual void	Layout (vtkTree inputTree, vtkDataArray areaArray, vtkDataArray *sizeArray)

virtual int	GetWidth ()
virtual void	SetWidth (int)
virtual int	GetHeight ()
virtual void	SetHeight (int)

Static Public Member Functions
static vtkCirclePackFrontChainLayoutStrategy *	New ()
static int	IsTypeOf (const char *type)
static vtkCirclePackFrontChainLayoutStrategy *	SafeDownCast (vtkObject *o)

Protected Member Functions
	vtkCirclePackFrontChainLayoutStrategy ()
	~vtkCirclePackFrontChainLayoutStrategy ()
Protected Member Functions inherited from vtkCirclePackLayoutStrategy
	vtkCirclePackLayoutStrategy ()
	~vtkCirclePackLayoutStrategy ()
Protected Member Functions inherited from vtkObject
	vtkObject ()
virtual	~vtkObject ()
virtual void	RegisterInternal (vtkObjectBase *, int check)
virtual void	UnRegisterInternal (vtkObjectBase *, int check)
void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=NULL)
void	InternalReleaseFocus ()
Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()
virtual	~vtkObjectBase ()
virtual void	CollectRevisions (ostream &)
virtual void	ReportReferences (vtkGarbageCollector *)
	vtkObjectBase (const vtkObjectBase &)
void	operator= (const vtkObjectBase &)

Protected Attributes
char *	CirclesFieldName
int	Width
int	Height

Detailed Description

layout a vtkTree into packed circles using the front chain algorithm.

vtkCirclePackFrontChainLayoutStrategy assigns circles to each node of the input vtkTree using the front chain algorithm. The algorithm packs circles by searching a "front chain" of circles around the perimeter of the circles that have already been packed for the current level in the tree hierarchy. Searching the front chain is in general faster than searching all of the circles that have been packed at the current level.

WARNING: The algorithm tends to break down and produce packings with overlapping circles when there is a large difference in the radii of the circles at a given level of the tree hierarchy. Roughly on the order a 1000:1 ratio of circle radii.

Please see the following reference for more details on the algorithm.

Title: "Visualization of large hierarchical data by circle packing" Authors: Weixin Wang, Hui Wang, Guozhong Dai, Hongan Wang Conference: Proceedings of the SIGCHI conference on Human Factors in computing systems Year: 2006

Tests:: vtkCirclePackFrontChainLayoutStrategy (Tests)

Definition at line 55 of file vtkCirclePackFrontChainLayoutStrategy.h.

Member Typedef Documentation

typedef vtkCirclePackLayoutStrategy vtkCirclePackFrontChainLayoutStrategy::Superclass

Reimplemented from vtkCirclePackLayoutStrategy.

Definition at line 60 of file vtkCirclePackFrontChainLayoutStrategy.h.

Constructor & Destructor Documentation

vtkCirclePackFrontChainLayoutStrategy::vtkCirclePackFrontChainLayoutStrategy ( )

protected

vtkCirclePackFrontChainLayoutStrategy::~vtkCirclePackFrontChainLayoutStrategy ( )

protected

Member Function Documentation

static vtkCirclePackFrontChainLayoutStrategy* vtkCirclePackFrontChainLayoutStrategy::New ( )

static

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

Reimplemented from vtkObject.

virtual const char* vtkCirclePackFrontChainLayoutStrategy::GetClassName ( )

virtual

Reimplemented from vtkCirclePackLayoutStrategy.

static int vtkCirclePackFrontChainLayoutStrategy::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 vtkCirclePackLayoutStrategy.

virtual int vtkCirclePackFrontChainLayoutStrategy::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 vtkCirclePackLayoutStrategy.

static vtkCirclePackFrontChainLayoutStrategy* vtkCirclePackFrontChainLayoutStrategy::SafeDownCast ( vtkObject * o )

static

Reimplemented from vtkCirclePackLayoutStrategy.

void vtkCirclePackFrontChainLayoutStrategy::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 vtkCirclePackLayoutStrategy.