performs ray integration with pre-integration tables. More...

#include <vtkUnstructuredGridPreIntegration.h>

Inheritance diagram for vtkUnstructuredGridPreIntegration:

Collaboration diagram for vtkUnstructuredGridPreIntegration:

Public Types
typedef vtkUnstructuredGridVolumeRayIntegrator	Superclass

Public Types inherited from vtkUnstructuredGridVolumeRayIntegrator
typedef vtkObject	Superclass

Public Types inherited from vtkObject
typedef vtkObjectBase	Superclass

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

vtkUnstructuredGridPreIntegration *	NewInstance () const

virtual void	PrintSelf (ostream &os, vtkIndent indent)

virtual void	Initialize (vtkVolume volume, vtkDataArray scalars)

virtual void	Integrate (vtkDoubleArray intersectionLengths, vtkDataArray nearIntersections, vtkDataArray *farIntersections, float color[4])

virtual float *	GetPreIntegrationTable (int component=0)


virtual vtkUnstructuredGridVolumeRayIntegrator *	GetIntegrator ()

virtual void	SetIntegrator (vtkUnstructuredGridVolumeRayIntegrator *)


virtual void	SetIntegrationTableScalarResolution (int)

virtual int	GetIntegrationTableScalarResolution ()

virtual void	SetIntegrationTableLengthResolution (int)

virtual int	GetIntegrationTableLengthResolution ()


virtual double	GetIntegrationTableScalarShift (int component=0)

virtual double	GetIntegrationTableScalarScale (int component=0)

virtual double	GetIntegrationTableLengthScale ()


virtual int	GetIncrementalPreIntegration ()

virtual void	SetIncrementalPreIntegration (int)

virtual void	IncrementalPreIntegrationOn ()

virtual void	IncrementalPreIntegrationOff ()


float *	GetTableEntry (double scalar_front, double scalar_back, double lenth, int component=0)


float *	GetIndexedTableEntry (int scalar_front_index, int scalar_back_index, int length_index, int component=0)

Public Member Functions inherited from vtkUnstructuredGridVolumeRayIntegrator
vtkUnstructuredGridVolumeRayIntegrator *	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 vtkUnstructuredGridPreIntegration *	SafeDownCast (vtkObjectBase *o)

static vtkUnstructuredGridPreIntegration *	New ()

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

static vtkUnstructuredGridVolumeRayIntegrator *	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

	vtkUnstructuredGridPreIntegration ()

	~vtkUnstructuredGridPreIntegration ()

virtual void	BuildPreIntegrationTables (vtkDataArray *scalars)

Protected Member Functions inherited from vtkUnstructuredGridVolumeRayIntegrator
	vtkUnstructuredGridVolumeRayIntegrator ()

	~vtkUnstructuredGridVolumeRayIntegrator ()

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
vtkUnstructuredGridVolumeRayIntegrator *	Integrator

vtkVolume *	Volume

vtkVolumeProperty *	Property

double	MaxLength

int	NumComponents

float **	IntegrationTable

double *	IntegrationTableScalarShift

double *	IntegrationTableScalarScale

double	IntegrationTableLengthScale

vtkTimeStamp	IntegrationTableBuilt

int	IntegrationTableScalarResolution

int	IntegrationTableLengthResolution

int	IncrementalPreIntegration

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

performs ray integration with pre-integration tables.

vtkUnstructuredGridPreIntegration performs ray integration by looking into a precomputed table. The result should be equivalent to that computed by vtkUnstructuredGridLinearRayIntegrator and vtkUnstructuredGridPartialPreIntegration, but faster than either one. The pre-integration algorithm was first introduced by Roettger, Kraus, and Ertl in "Hardware-Accelerated Volume And Isosurface Rendering Based On Cell-Projection."

Due to table size limitations, a table can only be indexed by independent scalars. Thus, dependent scalars are not supported.

Tests:: vtkUnstructuredGridPreIntegration (Tests)

Definition at line 54 of file vtkUnstructuredGridPreIntegration.h.

Member Typedef Documentation

typedef vtkUnstructuredGridVolumeRayIntegrator vtkUnstructuredGridPreIntegration::Superclass

Definition at line 58 of file vtkUnstructuredGridPreIntegration.h.

Constructor & Destructor Documentation

vtkUnstructuredGridPreIntegration::vtkUnstructuredGridPreIntegration ( )

protected

vtkUnstructuredGridPreIntegration::~vtkUnstructuredGridPreIntegration ( )

protected

Member Function Documentation

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

static

virtual int vtkUnstructuredGridPreIntegration::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 vtkUnstructuredGridVolumeRayIntegrator.

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

static

virtual vtkObjectBase* vtkUnstructuredGridPreIntegration::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkUnstructuredGridVolumeRayIntegrator.

vtkUnstructuredGridPreIntegration* vtkUnstructuredGridPreIntegration::NewInstance ( ) const

static vtkUnstructuredGridPreIntegration* vtkUnstructuredGridPreIntegration::New ( )

static

virtual void vtkUnstructuredGridPreIntegration::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 vtkUnstructuredGridVolumeRayIntegrator.

virtual void vtkUnstructuredGridPreIntegration::Initialize	(	vtkVolume *	volume,
		vtkDataArray *	scalars
	)

virtual

Set up the integrator with the given properties and scalars.

Implements vtkUnstructuredGridVolumeRayIntegrator.

virtual void vtkUnstructuredGridPreIntegration::Integrate	(	vtkDoubleArray *	intersectionLengths,
		vtkDataArray *	nearIntersections,
		vtkDataArray *	farIntersections,
		float	color[4]
	)

virtual

Given a set of intersections (defined by the three arrays), compute the peicewise integration of the array in front to back order. /c intersectionLengths holds the lengths of each peicewise segment. /c nearIntersections and /c farIntersections hold the scalar values at the front and back of each segment. /c color should contain the RGBA value of the volume in front of the segments passed in, and the result will be placed back into /c color.

Implements vtkUnstructuredGridVolumeRayIntegrator.

virtual vtkUnstructuredGridVolumeRayIntegrator* vtkUnstructuredGridPreIntegration::GetIntegrator ( )

virtual

The class used to fill the pre integration table. By default, a vtkUnstructuredGridPartialPreIntegration is built.

virtual void vtkUnstructuredGridPreIntegration::SetIntegrator ( vtkUnstructuredGridVolumeRayIntegrator * )

virtual

The class used to fill the pre integration table. By default, a vtkUnstructuredGridPartialPreIntegration is built.

virtual void vtkUnstructuredGridPreIntegration::SetIntegrationTableScalarResolution ( int )

virtual

Set/Get the size of the integration table built.

virtual int vtkUnstructuredGridPreIntegration::GetIntegrationTableScalarResolution ( )

virtual

Set/Get the size of the integration table built.

virtual void vtkUnstructuredGridPreIntegration::SetIntegrationTableLengthResolution ( int )

virtual

Set/Get the size of the integration table built.

virtual int vtkUnstructuredGridPreIntegration::GetIntegrationTableLengthResolution ( )

virtual

Set/Get the size of the integration table built.

virtual double vtkUnstructuredGridPreIntegration::GetIntegrationTableScalarShift ( int component = 0 )

virtual

Get how an integration table is indexed.

virtual double vtkUnstructuredGridPreIntegration::GetIntegrationTableScalarScale ( int component = 0 )

virtual

Get how an integration table is indexed.

virtual double vtkUnstructuredGridPreIntegration::GetIntegrationTableLengthScale ( )

virtual

Get how an integration table is indexed.

virtual int vtkUnstructuredGridPreIntegration::GetIncrementalPreIntegration ( )

virtual

Get/set whether to use incremental pre-integration (by default it's on). Incremental pre-integration is much faster but can introduce error due to numerical imprecision. Under most circumstances, the error is not noticeable.

virtual void vtkUnstructuredGridPreIntegration::SetIncrementalPreIntegration ( int )

virtual

Get/set whether to use incremental pre-integration (by default it's on). Incremental pre-integration is much faster but can introduce error due to numerical imprecision. Under most circumstances, the error is not noticeable.

virtual void vtkUnstructuredGridPreIntegration::IncrementalPreIntegrationOn ( )

virtual

Get/set whether to use incremental pre-integration (by default it's on). Incremental pre-integration is much faster but can introduce error due to numerical imprecision. Under most circumstances, the error is not noticeable.

virtual void vtkUnstructuredGridPreIntegration::IncrementalPreIntegrationOff ( )

virtual

Get/set whether to use incremental pre-integration (by default it's on). Incremental pre-integration is much faster but can introduce error due to numerical imprecision. Under most circumstances, the error is not noticeable.

virtual float* vtkUnstructuredGridPreIntegration::GetPreIntegrationTable ( int component = 0 )

virtual

Get the partial pre-integration table for the given scalar component. The tables are built when Initialize is called. A segment of length d with a front scalar of sf and a back scalar of sb is referenced in the resulting table as 4 * ((l * IntegrationTableLengthScale) * IntegrationTableScalarResolution * IntegrationTableScalarResolution + (sb * IntegrationTableScalarScale + IntegrationTableScalarShift) * IntegrationTableScalarResolution + (sf * IntegrationTableScalarScale + IntegrationTableScalarShift)).

float * vtkUnstructuredGridPreIntegration::GetTableEntry	(	double	scalar_front,
		double	scalar_back,
		double	lenth,
		int	component = `0`
	)

inline

Get an entry (RGBA) in one of the pre-integration tables. The tables are built when Intialize is called.

Definition at line 182 of file vtkUnstructuredGridPreIntegration.h.

float * vtkUnstructuredGridPreIntegration::GetIndexedTableEntry	(	int	scalar_front_index,
		int	scalar_back_index,
		int	length_index,
		int	component = `0`
	)

inline

Like GetTableEntry, except the inputs are scaled indices into the table rather than than the actual scalar and length values. Use GetTableEntry unless you are really sure you know what you are doing.

Definition at line 156 of file vtkUnstructuredGridPreIntegration.h.

virtual void vtkUnstructuredGridPreIntegration::BuildPreIntegrationTables ( vtkDataArray * scalars )

protectedvirtual