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

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

#include <vtkRecursiveSphereDirectionEncoder.h>

Inheritance diagram for vtkRecursiveSphereDirectionEncoder:
[legend]
Collaboration diagram for vtkRecursiveSphereDirectionEncoder:
[legend]

List of all members.

Public Types

typedef vtkDirectionEncoder Superclass
- Public Types inherited from vtkObject

Public Member Functions

virtual const char * GetClassName ()
virtual int IsA (const char *type)
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 vtkObject
virtual void DebugOn ()
virtual void DebugOff ()
unsigned char GetDebug ()
void SetDebug (unsigned char 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)
vtkCommandGetCommand (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)
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 &os)
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 (vtkObject *o)
static
vtkRecursiveSphereDirectionEncoder
New ()
- Static Public Member Functions inherited from vtkObject
static void BreakOnError ()
static void SetGlobalWarningDisplay (int val)
static void GlobalWarningDisplayOn ()
static void GlobalWarningDisplayOff ()
static int GetGlobalWarningDisplay ()

Protected Member Functions

 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 &os)
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

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 33 of file vtkRecursiveSphereDirectionEncoder.h.


Member Typedef Documentation

Get the name of this class

Reimplemented from vtkDirectionEncoder.

Definition at line 36 of file vtkRecursiveSphereDirectionEncoder.h.


Constructor & Destructor Documentation

vtkRecursiveSphereDirectionEncoder::vtkRecursiveSphereDirectionEncoder ( )
protected
vtkRecursiveSphereDirectionEncoder::~vtkRecursiveSphereDirectionEncoder ( )
protected

Member Function Documentation

virtual const char* vtkRecursiveSphereDirectionEncoder::GetClassName ( )
virtual

Get the name of this class

Reimplemented from vtkDirectionEncoder.

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

Get the name of this class

Reimplemented from vtkDirectionEncoder.

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

Get the name of this class

Reimplemented from vtkDirectionEncoder.

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

Get the name of this class

Reimplemented from vtkDirectionEncoder.

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.

Reimplemented from vtkObject.

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

Member Data Documentation

int vtkRecursiveSphereDirectionEncoder::RecursionDepth
protected

Definition at line 81 of file vtkRecursiveSphereDirectionEncoder.h.

int* vtkRecursiveSphereDirectionEncoder::IndexTable
protected

Definition at line 86 of file vtkRecursiveSphereDirectionEncoder.h.

float* vtkRecursiveSphereDirectionEncoder::DecodedNormal
protected

Definition at line 92 of file vtkRecursiveSphereDirectionEncoder.h.

int vtkRecursiveSphereDirectionEncoder::IndexTableRecursionDepth
protected

Definition at line 98 of file vtkRecursiveSphereDirectionEncoder.h.

int vtkRecursiveSphereDirectionEncoder::OuterSize
protected

Definition at line 100 of file vtkRecursiveSphereDirectionEncoder.h.

int vtkRecursiveSphereDirectionEncoder::InnerSize
protected

Definition at line 101 of file vtkRecursiveSphereDirectionEncoder.h.

int vtkRecursiveSphereDirectionEncoder::GridSize
protected

Definition at line 102 of file vtkRecursiveSphereDirectionEncoder.h.


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