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vtkClustering2DLayoutStrategy Class Reference

a simple fast 2D graph layout More...

#include <vtkClustering2DLayoutStrategy.h>

Inheritance diagram for vtkClustering2DLayoutStrategy:
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Collaboration diagram for vtkClustering2DLayoutStrategy:
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Public Types

typedef vtkGraphLayoutStrategy Superclass
 
- Public Types inherited from vtkGraphLayoutStrategy
typedef vtkObject Superclass
 

Public Member Functions

virtual vtkTypeBool IsA (const char *type)
 Return 1 if this class is the same type of (or a subclass of) the named class. More...
 
vtkClustering2DLayoutStrategyNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent) override
 Methods invoked by print to print information about the object including superclasses. More...
 
virtual void SetRandomSeed (int)
 Seed the random number generator used to jitter point positions. More...
 
virtual int GetRandomSeed ()
 
virtual void SetMaxNumberOfIterations (int)
 Set/Get the maximum number of iterations to be used. More...
 
virtual int GetMaxNumberOfIterations ()
 
virtual void SetIterationsPerLayout (int)
 Set/Get the number of iterations per layout. More...
 
virtual int GetIterationsPerLayout ()
 
virtual void SetInitialTemperature (float)
 Set the initial temperature. More...
 
virtual float GetInitialTemperature ()
 
virtual void SetCoolDownRate (double)
 Set/Get the Cool-down rate. More...
 
virtual double GetCoolDownRate ()
 
virtual void SetRestDistance (float)
 Manually set the resting distance. More...
 
virtual float GetRestDistance ()
 
void Initialize () override
 This strategy sets up some data structures for faster processing of each Layout() call. More...
 
void Layout () override
 This is the layout method where the graph that was set in SetGraph() is laid out. More...
 
int IsLayoutComplete () override
 I'm an iterative layout so this method lets the caller know if I'm done laying out the graph. More...
 
- Public Member Functions inherited from vtkGraphLayoutStrategy
vtkGraphLayoutStrategyNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent) override
 Methods invoked by print to print information about the object including superclasses. More...
 
virtual void SetGraph (vtkGraph *graph)
 Setting the graph for the layout strategy. More...
 
virtual void SetWeightEdges (bool state)
 Whether to use edge weights in the layout or not. More...
 
virtual bool GetWeightEdges ()
 
virtual void SetEdgeWeightField (const char *field)
 Set/Get the field to use for the edge weights. More...
 
virtual char * GetEdgeWeightField ()
 
- Public Member Functions inherited from vtkObject
 vtkBaseTypeMacro (vtkObject, vtkObjectBase)
 
virtual void DebugOn ()
 Turn debugging output on. More...
 
virtual void DebugOff ()
 Turn debugging output off. More...
 
bool GetDebug ()
 Get the value of the debug flag. More...
 
void SetDebug (bool debugFlag)
 Set the value of the debug flag. More...
 
virtual void Modified ()
 Update the modification time for this object. More...
 
virtual vtkMTimeType GetMTime ()
 Return this object's modified time. More...
 
unsigned long AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
unsigned long AddObserver (const char *event, vtkCommand *, float priority=0.0f)
 
vtkCommandGetCommand (unsigned long tag)
 
void RemoveObserver (vtkCommand *)
 
void RemoveObservers (unsigned long event, vtkCommand *)
 
void RemoveObservers (const char *event, vtkCommand *)
 
vtkTypeBool HasObserver (unsigned long event, vtkCommand *)
 
vtkTypeBool HasObserver (const char *event, vtkCommand *)
 
void RemoveObserver (unsigned long tag)
 
void RemoveObservers (unsigned long event)
 
void RemoveObservers (const char *event)
 
void RemoveAllObservers ()
 
vtkTypeBool HasObserver (unsigned long event)
 
vtkTypeBool HasObserver (const char *event)
 
template<class U , class T >
unsigned long AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
 Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...
 
template<class U , class T >
unsigned long AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
 
template<class U , class T >
unsigned long AddObserver (unsigned long event, U observer, bool(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
 Allow user to set the AbortFlagOn() with the return value of the callback method. More...
 
int InvokeEvent (unsigned long event, void *callData)
 This method invokes an event and return whether the event was aborted or not. More...
 
int InvokeEvent (const char *event, void *callData)
 
int InvokeEvent (unsigned long event)
 
int InvokeEvent (const char *event)
 
- Public Member Functions inherited from vtkObjectBase
const char * GetClassName () const
 Return the class name as a string. More...
 
virtual void Delete ()
 Delete a VTK object. More...
 
virtual void FastDelete ()
 Delete a reference to this object. More...
 
void InitializeObjectBase ()
 
void Print (ostream &os)
 Print an object to an ostream. More...
 
virtual void PrintHeader (ostream &os, vtkIndent indent)
 
virtual void PrintTrailer (ostream &os, vtkIndent indent)
 
virtual void Register (vtkObjectBase *o)
 Increase the reference count (mark as used by another object). More...
 
virtual void UnRegister (vtkObjectBase *o)
 Decrease the reference count (release by another object). More...
 
int GetReferenceCount ()
 Return the current reference count of this object. More...
 
void SetReferenceCount (int)
 Sets the reference count. More...
 
void PrintRevisions (ostream &)
 Legacy. More...
 

Static Public Member Functions

static vtkClustering2DLayoutStrategyNew ()
 
static vtkTypeBool IsTypeOf (const char *type)
 
static vtkClustering2DLayoutStrategySafeDownCast (vtkObjectBase *o)
 
- Static Public Member Functions inherited from vtkGraphLayoutStrategy
static vtkTypeBool IsTypeOf (const char *type)
 
static vtkGraphLayoutStrategySafeDownCast (vtkObjectBase *o)
 
- Static Public Member Functions inherited from vtkObject
static vtkObjectNew ()
 Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...
 
static void BreakOnError ()
 This method is called when vtkErrorMacro executes. More...
 
static void SetGlobalWarningDisplay (int val)
 This is a global flag that controls whether any debug, warning or error messages are displayed. More...
 
static void GlobalWarningDisplayOn ()
 
static void GlobalWarningDisplayOff ()
 
static int GetGlobalWarningDisplay ()
 
- Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool IsTypeOf (const char *name)
 Return 1 if this class type is the same type of (or a subclass of) the named class. More...
 
static vtkObjectBaseNew ()
 Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...
 

Protected Member Functions

virtual vtkObjectBaseNewInstanceInternal () const
 
 vtkClustering2DLayoutStrategy ()
 
 ~vtkClustering2DLayoutStrategy () override
 
- Protected Member Functions inherited from vtkGraphLayoutStrategy
 vtkGraphLayoutStrategy ()
 
 ~vtkGraphLayoutStrategy () override
 
- Protected Member Functions inherited from vtkObject
 vtkObject ()
 
 ~vtkObject () override
 
void RegisterInternal (vtkObjectBase *, vtkTypeBool check) override
 
void UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override
 
void InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=nullptr)
 These methods allow a command to exclusively grab all events. More...
 
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

int MaxNumberOfIterations
 
float InitialTemperature
 
float CoolDownRate
 
- Protected Attributes inherited from vtkGraphLayoutStrategy
vtkGraphGraph
 
char * EdgeWeightField
 
bool WeightEdges
 
- Protected Attributes inherited from vtkObject
bool Debug
 
vtkTimeStamp MTime
 
vtkSubjectHelper * SubjectHelper
 
- Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t > ReferenceCount
 
vtkWeakPointerBase ** WeakPointers
 

Detailed Description

a simple fast 2D graph layout

This class is a density grid based force directed layout strategy. Also please note that 'fast' is relative to quite slow. :) The layout running time is O(V+E) with an extremely high constant.

Thanks:
Thanks to Godzilla for not eating my computer so that this class could be written.

Definition at line 46 of file vtkClustering2DLayoutStrategy.h.

Member Typedef Documentation

◆ Superclass

Definition at line 51 of file vtkClustering2DLayoutStrategy.h.

Constructor & Destructor Documentation

◆ vtkClustering2DLayoutStrategy()

vtkClustering2DLayoutStrategy::vtkClustering2DLayoutStrategy ( )
protected

◆ ~vtkClustering2DLayoutStrategy()

vtkClustering2DLayoutStrategy::~vtkClustering2DLayoutStrategy ( )
overrideprotected

Member Function Documentation

◆ New()

static vtkClustering2DLayoutStrategy* vtkClustering2DLayoutStrategy::New ( )
static

◆ IsTypeOf()

static vtkTypeBool vtkClustering2DLayoutStrategy::IsTypeOf ( const char *  type)
static

◆ IsA()

virtual vtkTypeBool vtkClustering2DLayoutStrategy::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 vtkGraphLayoutStrategy.

◆ SafeDownCast()

static vtkClustering2DLayoutStrategy* vtkClustering2DLayoutStrategy::SafeDownCast ( vtkObjectBase o)
static

◆ NewInstanceInternal()

virtual vtkObjectBase* vtkClustering2DLayoutStrategy::NewInstanceInternal ( ) const
protectedvirtual

Reimplemented from vtkGraphLayoutStrategy.

◆ NewInstance()

vtkClustering2DLayoutStrategy* vtkClustering2DLayoutStrategy::NewInstance ( ) const

◆ PrintSelf()

void vtkClustering2DLayoutStrategy::PrintSelf ( ostream &  os,
vtkIndent  indent 
)
overridevirtual

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.

◆ SetRandomSeed()

virtual void vtkClustering2DLayoutStrategy::SetRandomSeed ( int  )
virtual

Seed the random number generator used to jitter point positions.

This has a significant effect on their final positions when the layout is complete.

◆ GetRandomSeed()

virtual int vtkClustering2DLayoutStrategy::GetRandomSeed ( )
virtual

◆ SetMaxNumberOfIterations()

virtual void vtkClustering2DLayoutStrategy::SetMaxNumberOfIterations ( int  )
virtual

Set/Get the maximum number of iterations to be used.

The higher this number, the more iterations through the algorithm is possible, and thus, the more the graph gets modified. The default is '100' for no particular reason Note: The strong recommendation is that you do not change this parameter. :)

◆ GetMaxNumberOfIterations()

virtual int vtkClustering2DLayoutStrategy::GetMaxNumberOfIterations ( )
virtual

◆ SetIterationsPerLayout()

virtual void vtkClustering2DLayoutStrategy::SetIterationsPerLayout ( int  )
virtual

Set/Get the number of iterations per layout.

The only use for this ivar is for the application to do visualizations of the layout before it's complete. The default is '100' to match the default 'MaxNumberOfIterations' Note: Changing this parameter is just fine :)

◆ GetIterationsPerLayout()

virtual int vtkClustering2DLayoutStrategy::GetIterationsPerLayout ( )
virtual

◆ SetInitialTemperature()

virtual void vtkClustering2DLayoutStrategy::SetInitialTemperature ( float  )
virtual

Set the initial temperature.

The temperature default is '5' for no particular reason Note: The strong recommendation is that you do not change this parameter. :)

◆ GetInitialTemperature()

virtual float vtkClustering2DLayoutStrategy::GetInitialTemperature ( )
virtual

◆ SetCoolDownRate()

virtual void vtkClustering2DLayoutStrategy::SetCoolDownRate ( double  )
virtual

Set/Get the Cool-down rate.

The higher this number is, the longer it will take to "cool-down", and thus, the more the graph will be modified. The default is '10' for no particular reason. Note: The strong recommendation is that you do not change this parameter. :)

◆ GetCoolDownRate()

virtual double vtkClustering2DLayoutStrategy::GetCoolDownRate ( )
virtual

◆ SetRestDistance()

virtual void vtkClustering2DLayoutStrategy::SetRestDistance ( float  )
virtual

Manually set the resting distance.

Otherwise the distance is computed automatically.

◆ GetRestDistance()

virtual float vtkClustering2DLayoutStrategy::GetRestDistance ( )
virtual

◆ Initialize()

void vtkClustering2DLayoutStrategy::Initialize ( )
overridevirtual

This strategy sets up some data structures for faster processing of each Layout() call.

Reimplemented from vtkGraphLayoutStrategy.

◆ Layout()

void vtkClustering2DLayoutStrategy::Layout ( )
overridevirtual

This is the layout method where the graph that was set in SetGraph() is laid out.

The method can either entirely layout the graph or iteratively lay out the graph. If you have an iterative layout please implement the IsLayoutComplete() method.

Implements vtkGraphLayoutStrategy.

◆ IsLayoutComplete()

int vtkClustering2DLayoutStrategy::IsLayoutComplete ( )
inlineoverridevirtual

I'm an iterative layout so this method lets the caller know if I'm done laying out the graph.

Reimplemented from vtkGraphLayoutStrategy.

Definition at line 141 of file vtkClustering2DLayoutStrategy.h.

Member Data Documentation

◆ MaxNumberOfIterations

int vtkClustering2DLayoutStrategy::MaxNumberOfIterations
protected

Definition at line 147 of file vtkClustering2DLayoutStrategy.h.

◆ InitialTemperature

float vtkClustering2DLayoutStrategy::InitialTemperature
protected

Definition at line 148 of file vtkClustering2DLayoutStrategy.h.

◆ CoolDownRate

float vtkClustering2DLayoutStrategy::CoolDownRate
protected

Definition at line 149 of file vtkClustering2DLayoutStrategy.h.


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