A direction encoder based on the recursive subdivision of an octahedron. More...

#include <vtkRecursiveSphereDirectionEncoder.h>

Inheritance diagram for vtkRecursiveSphereDirectionEncoder:

Collaboration diagram for vtkRecursiveSphereDirectionEncoder:

Public Types
typedef vtkDirectionEncoder	Superclass

Public Types inherited from vtkDirectionEncoder
typedef vtkObject	Superclass

Public Types inherited from vtkObject
typedef vtkObjectBase	Superclass

Public Member Functions
virtual int	IsA (const char *type)

vtkRecursiveSphereDirectionEncoder *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent)

int	GetEncodedDirection (float n[3])

float *	GetDecodedGradient (int value)

int	GetNumberOfEncodedDirections (void)

float *	GetDecodedGradientTable (void)


virtual void	SetRecursionDepth (int)

virtual int	GetRecursionDepth ()

Public Member Functions inherited from vtkDirectionEncoder
vtkDirectionEncoder *	NewInstance () const

Public Member Functions inherited from vtkObject
vtkObject *	NewInstance () const

virtual void	DebugOn ()

virtual void	DebugOff ()

bool	GetDebug ()

void	SetDebug (bool debugFlag)

virtual void	Modified ()

virtual unsigned long	GetMTime ()

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)

vtkCommand *	GetCommand (unsigned long tag)

void	RemoveObserver (vtkCommand *)

void	RemoveObservers (unsigned long event, vtkCommand *)

void	RemoveObservers (const char event, vtkCommand )

int	HasObserver (unsigned long event, vtkCommand *)

int	HasObserver (const char event, vtkCommand )

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

int	HasObserver (unsigned long event)

int	HasObserver (const char *event)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)

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)

int	InvokeEvent (unsigned long event, void *callData)

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

virtual void	Delete ()

virtual void	FastDelete ()

void	Print (ostream &os)

virtual void	Register (vtkObjectBase *o)

virtual void	UnRegister (vtkObjectBase *o)

void	SetReferenceCount (int)

void	PrintRevisions (ostream &)

virtual void	PrintHeader (ostream &os, vtkIndent indent)

virtual void	PrintTrailer (ostream &os, vtkIndent indent)

int	GetReferenceCount ()

Static Public Member Functions
static int	IsTypeOf (const char *type)

static vtkRecursiveSphereDirectionEncoder *	SafeDownCast (vtkObjectBase *o)

static vtkRecursiveSphereDirectionEncoder *	New ()

Static Public Member Functions inherited from vtkDirectionEncoder
static int	IsTypeOf (const char *type)

static vtkDirectionEncoder *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkObject
static int	IsTypeOf (const char *type)

static vtkObject *	SafeDownCast (vtkObjectBase *o)

static vtkObject *	New ()

static void	BreakOnError ()

static void	SetGlobalWarningDisplay (int val)

static void	GlobalWarningDisplayOn ()

static void	GlobalWarningDisplayOff ()

static int	GetGlobalWarningDisplay ()

Static Public Member Functions inherited from vtkObjectBase
static int	IsTypeOf (const char *name)

static vtkObjectBase *	New ()

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkRecursiveSphereDirectionEncoder ()

	~vtkRecursiveSphereDirectionEncoder ()

void	InitializeIndexTable (void)

Protected Member Functions inherited from vtkDirectionEncoder
	vtkDirectionEncoder ()

	~vtkDirectionEncoder ()

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
int	RecursionDepth

int *	IndexTable

float *	DecodedNormal

int	IndexTableRecursionDepth

int	OuterSize

int	InnerSize

int	GridSize

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

A direction encoder based on the recursive subdivision of an octahedron.

vtkRecursiveSphereDirectionEncoder is a direction encoder which uses the vertices of a recursive subdivision of an octahedron (with the vertices pushed out onto the surface of an enclosing sphere) to encode directions into a two byte value.

See also: vtkDirectionEncoder

Definition at line 34 of file vtkRecursiveSphereDirectionEncoder.h.

Member Typedef Documentation

typedef vtkDirectionEncoder vtkRecursiveSphereDirectionEncoder::Superclass

Definition at line 37 of file vtkRecursiveSphereDirectionEncoder.h.

Constructor & Destructor Documentation

vtkRecursiveSphereDirectionEncoder::vtkRecursiveSphereDirectionEncoder ( )

protected

vtkRecursiveSphereDirectionEncoder::~vtkRecursiveSphereDirectionEncoder ( )

protected

Member Function Documentation

static int vtkRecursiveSphereDirectionEncoder::IsTypeOf ( const char * type )

static

virtual int vtkRecursiveSphereDirectionEncoder::IsA ( const char * type )

virtual

Get the name of this class

Reimplemented from vtkDirectionEncoder.

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

static

virtual vtkObjectBase* vtkRecursiveSphereDirectionEncoder::NewInstanceInternal ( ) const

protectedvirtual

Get the name of this class

Reimplemented from vtkDirectionEncoder.

vtkRecursiveSphereDirectionEncoder* vtkRecursiveSphereDirectionEncoder::NewInstance ( ) const

void vtkRecursiveSphereDirectionEncoder::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

virtual

Get the name of this class

Reimplemented from vtkDirectionEncoder.

static vtkRecursiveSphereDirectionEncoder* vtkRecursiveSphereDirectionEncoder::New ( )

static

Construct the object. Initialize the index table which will be used to map the normal into a patch on the recursively subdivided sphere.

int vtkRecursiveSphereDirectionEncoder::GetEncodedDirection ( float n[3] )

virtual

Given a normal vector n, return the encoded direction

Implements vtkDirectionEncoder.

float* vtkRecursiveSphereDirectionEncoder::GetDecodedGradient ( int value )

virtual

/ Given an encoded value, return a pointer to the normal vector

Implements vtkDirectionEncoder.

int vtkRecursiveSphereDirectionEncoder::GetNumberOfEncodedDirections ( void )

virtual

Return the number of encoded directions

Implements vtkDirectionEncoder.

float* vtkRecursiveSphereDirectionEncoder::GetDecodedGradientTable ( void )

virtual

Get the decoded gradient table. There are this->GetNumberOfEncodedDirections() entries in the table, each containing a normal (direction) vector. This is a flat structure - 3 times the number of directions floats in an array.

Implements vtkDirectionEncoder.

virtual void vtkRecursiveSphereDirectionEncoder::SetRecursionDepth ( int )

virtual

Set / Get the recursion depth for the subdivision. This indicates how many time one triangle on the initial 8-sided sphere model is replaced by four triangles formed by connecting triangle edge midpoints. A recursion level of 0 yields 8 triangles with 6 unique vertices. The normals are the vectors from the sphere center through the vertices. The number of directions will be 11 since the four normals with 0 z values will be duplicated in the table - once with +0 values and the other time with -0 values, and an addition index will be used to represent the (0,0,0) normal. If we instead choose a recursion level of 6 (the maximum that can fit within 2 bytes) the number of directions is 16643, with 16386 unique directions and a zero normal.

virtual int vtkRecursiveSphereDirectionEncoder::GetRecursionDepth ( )

virtual

Set / Get the recursion depth for the subdivision. This indicates how many time one triangle on the initial 8-sided sphere model is replaced by four triangles formed by connecting triangle edge midpoints. A recursion level of 0 yields 8 triangles with 6 unique vertices. The normals are the vectors from the sphere center through the vertices. The number of directions will be 11 since the four normals with 0 z values will be duplicated in the table - once with +0 values and the other time with -0 values, and an addition index will be used to represent the (0,0,0) normal. If we instead choose a recursion level of 6 (the maximum that can fit within 2 bytes) the number of directions is 16643, with 16386 unique directions and a zero normal.

void vtkRecursiveSphereDirectionEncoder::InitializeIndexTable ( void )

protected