Builds the space leaping data structure. More...

#include <vtkVolumeRayCastSpaceLeapingImageFilter.h>

Inheritance diagram for vtkVolumeRayCastSpaceLeapingImageFilter:

Collaboration diagram for vtkVolumeRayCastSpaceLeapingImageFilter:

Public Types
typedef vtkThreadedImageAlgorithm	Superclass
Public Types inherited from vtkThreadedImageAlgorithm
Public Types inherited from vtkImageAlgorithm
Public Types inherited from vtkAlgorithm
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	GetNumberOfIndependentComponents ()
unsigned short *	GetMinMaxVolume (int dims[4])
virtual void	SetCache (vtkImageData *imageCache)
unsigned long	ComputeOffset (int ext[6], int wholeExt[6], int nComponents)

virtual void	SetCurrentScalars (vtkDataArray *)
virtual vtkDataArray *	GetCurrentScalars ()

virtual void	SetIndependentComponents (int)
virtual int	GetIndependentComponents ()

virtual void	SetComputeGradientOpacity (int)
virtual int	GetComputeGradientOpacity ()
virtual void	ComputeGradientOpacityOn ()
virtual void	ComputeGradientOpacityOff ()

virtual void	SetComputeMinMax (int)
virtual int	GetComputeMinMax ()
virtual void	ComputeMinMaxOn ()
virtual void	ComputeMinMaxOff ()

virtual void	SetUpdateGradientOpacityFlags (int)
virtual int	GetUpdateGradientOpacityFlags ()
virtual void	UpdateGradientOpacityFlagsOn ()
virtual void	UpdateGradientOpacityFlagsOff ()

unsigned long	GetLastMinMaxBuildTime ()

unsigned long	GetLastMinMaxFlagTime ()

virtual void	SetTableShift (float, float, float, float)
virtual void	SetTableShift (float[4])
virtual float *	GetTableShift ()
virtual void	GetTableShift (float &, float &, float &, float &)
virtual void	GetTableShift (float[4])
virtual void	SetTableScale (float, float, float, float)
virtual void	SetTableScale (float[4])
virtual float *	GetTableScale ()
virtual void	GetTableScale (float &, float &, float &, float &)
virtual void	GetTableScale (float[4])
virtual void	SetTableSize (int, int, int, int)
virtual void	SetTableSize (int[4])
virtual int *	GetTableSize ()
virtual void	GetTableSize (int &, int &, int &, int &)
virtual void	GetTableSize (int[4])

unsigned short *	GetMinNonZeroScalarIndex ()
unsigned char *	GetMinNonZeroGradientMagnitudeIndex ()

void	SetGradientMagnitude (unsigned char **gradientMagnitude)
unsigned char **	GetGradientMagnitude ()

void	SetScalarOpacityTable (int c, unsigned short *t)
void	SetGradientOpacityTable (int c, unsigned short *t)
Public Member Functions inherited from vtkThreadedImageAlgorithm
virtual void	ThreadedExecute (vtkImageData inData, vtkImageData outData, int extent[6], int threadId)
virtual void	SetNumberOfThreads (int)
virtual int	GetNumberOfThreads ()
virtual int	SplitExtent (int splitExt[6], int startExt[6], int num, int total)
Public Member Functions inherited from vtkImageAlgorithm
vtkDataObject *	GetInput (int port)
vtkDataObject *	GetInput ()
vtkImageData *	GetImageDataInput (int port)
vtkImageData *	GetOutput ()
vtkImageData *	GetOutput (int)
virtual void	SetOutput (vtkDataObject *d)
virtual int	ProcessRequest (vtkInformation , vtkInformationVector , vtkInformationVector )
void	SetInput (vtkDataObject *)
void	SetInput (int, vtkDataObject *)
virtual void	AddInput (vtkDataObject *)
virtual void	AddInput (int, vtkDataObject *)
Public Member Functions inherited from vtkAlgorithm
int	HasExecutive ()
vtkExecutive *	GetExecutive ()
virtual void	SetExecutive (vtkExecutive *executive)
virtual int	ModifyRequest (vtkInformation *request, int when)
vtkInformation *	GetInputPortInformation (int port)
vtkInformation *	GetOutputPortInformation (int port)
int	GetNumberOfInputPorts ()
int	GetNumberOfOutputPorts ()
void	UpdateProgress (double amount)
vtkInformation *	GetInputArrayInformation (int idx)
void	RemoveAllInputs ()
vtkDataObject *	GetOutputDataObject (int port)
virtual void	RemoveInputConnection (int port, vtkAlgorithmOutput *input)
int	GetNumberOfInputConnections (int port)
int	GetTotalNumberOfInputConnections ()
vtkAlgorithmOutput *	GetInputConnection (int port, int index)
virtual void	Update ()
virtual void	UpdateInformation ()
virtual void	UpdateWholeExtent ()
void	ConvertTotalInputToPortConnection (int ind, int &port, int &conn)
virtual double	ComputePriority ()
int	ProcessRequest (vtkInformation request, vtkCollection inInfo, vtkInformationVector *outInfo)
virtual int	ComputePipelineMTime (vtkInformation request, vtkInformationVector inInfoVec, vtkInformationVector outInfoVec, int requestFromOutputPort, unsigned long *mtime)
virtual vtkInformation *	GetInformation ()
virtual void	SetInformation (vtkInformation *)
virtual void	Register (vtkObjectBase *o)
virtual void	UnRegister (vtkObjectBase *o)
virtual void	SetAbortExecute (int)
virtual int	GetAbortExecute ()
virtual void	AbortExecuteOn ()
virtual void	AbortExecuteOff ()
virtual void	SetProgress (double)
virtual double	GetProgress ()
void	SetProgressText (const char *ptext)
virtual char *	GetProgressText ()
virtual unsigned long	GetErrorCode ()
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, const char *name)
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, int fieldAttributeType)
virtual void	SetInputArrayToProcess (int idx, vtkInformation *info)
virtual void	SetInputArrayToProcess (int idx, int port, int connection, const char fieldAssociation, const char attributeTypeorName)
vtkDataObject *	GetInputDataObject (int port, int connection)
virtual void	SetInputConnection (int port, vtkAlgorithmOutput *input)
virtual void	SetInputConnection (vtkAlgorithmOutput *input)
virtual void	AddInputConnection (int port, vtkAlgorithmOutput *input)
virtual void	AddInputConnection (vtkAlgorithmOutput *input)
vtkAlgorithmOutput *	GetOutputPort (int index)
vtkAlgorithmOutput *	GetOutputPort ()
virtual void	SetReleaseDataFlag (int)
virtual int	GetReleaseDataFlag ()
void	ReleaseDataFlagOn ()
void	ReleaseDataFlagOff ()
int	UpdateExtentIsEmpty (vtkDataObject *output)
int	UpdateExtentIsEmpty (vtkInformation *pinfo, int extentType)
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)
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)
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)
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 vtkVolumeRayCastSpaceLeapingImageFilter *	SafeDownCast (vtkObject *o)
static vtkVolumeRayCastSpaceLeapingImageFilter *	New ()

static void	ComputeInputExtentsForOutput (int inExt[6], unsigned int inDim[3], int outExt[6], vtkImageData *inData)

Protected Member Functions
	vtkVolumeRayCastSpaceLeapingImageFilter ()
	~vtkVolumeRayCastSpaceLeapingImageFilter ()
void	InternalRequestUpdateExtent (int , int )
void	ComputeFirstNonZeroOpacityIndices ()

virtual int	RequestUpdateExtent (vtkInformation , vtkInformationVector , vtkInformationVector )
void	ThreadedRequestData (vtkInformation request, vtkInformationVector inputVector, vtkInformationVector outputVector, vtkImageData *inData, vtkImageData outData, int outExt[6], int id)
virtual int	RequestData (vtkInformation request, vtkInformationVector inputVector, vtkInformationVector outputVector)
virtual int	RequestInformation (vtkInformation , vtkInformationVector , vtkInformationVector )

void	FillScalarOpacityFlags (vtkImageData *minMaxVolume, int outExt[6])

void	FillScalarAndGradientOpacityFlags (vtkImageData *minMaxVolume, int outExt[6])

virtual void	AllocateOutputData (vtkImageData out, int uExtent)
virtual vtkImageData *	AllocateOutputData (vtkDataObject *out)
Protected Member Functions inherited from vtkThreadedImageAlgorithm
	vtkThreadedImageAlgorithm ()
	~vtkThreadedImageAlgorithm ()
Protected Member Functions inherited from vtkImageAlgorithm
	vtkImageAlgorithm ()
	~vtkImageAlgorithm ()
virtual void	CopyInputArrayAttributesToOutput (vtkInformation request, vtkInformationVector inputVector, vtkInformationVector outputVector)
virtual void	CopyAttributeData (vtkImageData in, vtkImageData out, vtkInformationVector **inputVector)
virtual int	FillOutputPortInformation (int port, vtkInformation *info)
virtual int	FillInputPortInformation (int port, vtkInformation *info)
virtual void	ExecuteData (vtkDataObject *output)
virtual void	Execute ()
Protected Member Functions inherited from vtkAlgorithm
	vtkAlgorithm ()
	~vtkAlgorithm ()
virtual void	SetNumberOfInputPorts (int n)
virtual void	SetNumberOfOutputPorts (int n)
int	InputPortIndexInRange (int index, const char *action)
int	OutputPortIndexInRange (int index, const char *action)
int	GetInputArrayAssociation (int idx, vtkInformationVector **inputVector)
virtual vtkExecutive *	CreateDefaultExecutive ()
virtual void	ReportReferences (vtkGarbageCollector *)
virtual void	SetNumberOfInputConnections (int port, int n)
int	GetInputArrayAssociation (int idx, int connection, vtkInformationVector **inputVector)
int	GetInputArrayAssociation (int idx, vtkDataObject *input)
vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector)
vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input)
vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input, int &association)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association)
vtkInformation *	GetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector)
virtual void	SetNthInputConnection (int port, int index, vtkAlgorithmOutput *input)
virtual void	SetErrorCode (unsigned long)
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)
	vtkObjectBase (const vtkObjectBase &)
void	operator= (const vtkObjectBase &)

Protected Attributes
int	IndependentComponents
vtkTimeStamp	LastMinMaxBuildTime
vtkTimeStamp	LastMinMaxFlagTime
vtkDataArray *	CurrentScalars
float	TableShift [4]
float	TableScale [4]
int	TableSize [4]
int	ComputeGradientOpacity
int	ComputeMinMax
int	UpdateGradientOpacityFlags
unsigned short *	MinNonZeroScalarIndex
unsigned char *	MinNonZeroGradientMagnitudeIndex
unsigned char **	GradientMagnitude
unsigned short *	ScalarOpacityTable [4]
unsigned short *	GradientOpacityTable [4]
vtkImageData *	Cache
Protected Attributes inherited from vtkThreadedImageAlgorithm
vtkMultiThreader *	Threader
int	NumberOfThreads

Detailed Description

Builds the space leaping data structure.

This is an optimized multi-threaded imaging filter that builds the space leaping datastructure, used by vtkFixedPointVolumeRayCastMapper. Empty space leaping is used to skip large empty regions in the scalar opacity and/or the gradient opacity transfer functions. Depending on the various options set by vtkFixedPointVolumeRayCastMapper, the class will internally invoke one of the many optmized routines to compute the min/max/gradient-max values within a fixed block size, trying to compute everything in a single multi-threaded pass through the data

The block size may be changed at compile time. Its ifdef'ed to 4 in the CXX file.

Definition at line 38 of file vtkVolumeRayCastSpaceLeapingImageFilter.h.

Member Typedef Documentation

typedef vtkThreadedImageAlgorithm vtkVolumeRayCastSpaceLeapingImageFilter::Superclass

Reimplemented from vtkThreadedImageAlgorithm.

Definition at line 41 of file vtkVolumeRayCastSpaceLeapingImageFilter.h.

Constructor & Destructor Documentation

vtkVolumeRayCastSpaceLeapingImageFilter::vtkVolumeRayCastSpaceLeapingImageFilter ( )

protected

vtkVolumeRayCastSpaceLeapingImageFilter::~vtkVolumeRayCastSpaceLeapingImageFilter ( )

protected

Member Function Documentation

virtual const char* vtkVolumeRayCastSpaceLeapingImageFilter::GetClassName ( )

virtual

Reimplemented from vtkThreadedImageAlgorithm.

static int vtkVolumeRayCastSpaceLeapingImageFilter::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 vtkThreadedImageAlgorithm.

virtual int vtkVolumeRayCastSpaceLeapingImageFilter::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 vtkThreadedImageAlgorithm.

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

static

Reimplemented from vtkThreadedImageAlgorithm.

void vtkVolumeRayCastSpaceLeapingImageFilter::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 vtkThreadedImageAlgorithm.

static vtkVolumeRayCastSpaceLeapingImageFilter* vtkVolumeRayCastSpaceLeapingImageFilter::New ( )

static

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

Reimplemented from vtkAlgorithm.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::SetCurrentScalars ( vtkDataArray * )

virtual

Set the scalars.

virtual vtkDataArray* vtkVolumeRayCastSpaceLeapingImageFilter::GetCurrentScalars ( )

virtual

Set the scalars.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::SetIndependentComponents ( int )

virtual

Do we use independent components, or dependent components ?

virtual int vtkVolumeRayCastSpaceLeapingImageFilter::GetIndependentComponents ( )

virtual

Do we use independent components, or dependent components ?

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::SetComputeGradientOpacity ( int )

virtual

Compute gradient opacity ?

virtual int vtkVolumeRayCastSpaceLeapingImageFilter::GetComputeGradientOpacity ( )

virtual

Compute gradient opacity ?

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::ComputeGradientOpacityOn ( )

virtual

Compute gradient opacity ?

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::ComputeGradientOpacityOff ( )

virtual

Compute gradient opacity ?

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::SetComputeMinMax ( int )

virtual

Compute the min max structure ?.

virtual int vtkVolumeRayCastSpaceLeapingImageFilter::GetComputeMinMax ( )

virtual

Compute the min max structure ?.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::ComputeMinMaxOn ( )

virtual

Compute the min max structure ?.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::ComputeMinMaxOff ( )

virtual

Compute the min max structure ?.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::SetUpdateGradientOpacityFlags ( int )

virtual

Update the gradient opacity flags. (The scalar opacity flags are always updated upon execution of this filter.)

virtual int vtkVolumeRayCastSpaceLeapingImageFilter::GetUpdateGradientOpacityFlags ( )

virtual

Update the gradient opacity flags. (The scalar opacity flags are always updated upon execution of this filter.)

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::UpdateGradientOpacityFlagsOn ( )

virtual

Update the gradient opacity flags. (The scalar opacity flags are always updated upon execution of this filter.)

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::UpdateGradientOpacityFlagsOff ( )

virtual

Update the gradient opacity flags. (The scalar opacity flags are always updated upon execution of this filter.)

unsigned long vtkVolumeRayCastSpaceLeapingImageFilter::GetLastMinMaxBuildTime ( )

inline

Get the last execution time. This is updated every time the scalars or the gradient opacity values are computed

Definition at line 83 of file vtkVolumeRayCastSpaceLeapingImageFilter.h.

unsigned long vtkVolumeRayCastSpaceLeapingImageFilter::GetLastMinMaxFlagTime ( )

inline

Get the last execution time. This is updated every time the flags bits are re-computed.

Definition at line 90 of file vtkVolumeRayCastSpaceLeapingImageFilter.h.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::SetTableShift	(	float	,
		float	,
		float	,
		float
	)

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::SetTableShift ( float [4] )

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual float* vtkVolumeRayCastSpaceLeapingImageFilter::GetTableShift ( )

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::GetTableShift	(	float &	,
		float &	,
		float &	,
		float &
	)

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::GetTableShift ( float [4] )

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::SetTableScale	(	float	,
		float	,
		float	,
		float
	)

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::SetTableScale ( float [4] )

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual float* vtkVolumeRayCastSpaceLeapingImageFilter::GetTableScale ( )

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::GetTableScale	(	float &	,
		float &	,
		float &	,
		float &
	)

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::GetTableScale ( float [4] )

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::SetTableSize	(	int	,
		int	,
		int	,
		int
	)

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::SetTableSize ( int [4] )

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual int* vtkVolumeRayCastSpaceLeapingImageFilter::GetTableSize ( )

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::GetTableSize	(	int &	,
		int &	,
		int &	,
		int &
	)

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::GetTableSize ( int [4] )

virtual

Is the difference between max and min of the data less than 32768? If so, and if the data is not of float/double type, use a simple offset mapping. If the difference between max and min is 32768 or greater, or the data is of type float or double, we must use an offset / scaling mapping. In this case, the array size will be 32768 - we need to figure out the offset and scale factor.

int vtkVolumeRayCastSpaceLeapingImageFilter::GetNumberOfIndependentComponents ( )

Get the number of independent components for which we need to keep track of min/max

unsigned short* vtkVolumeRayCastSpaceLeapingImageFilter::GetMinMaxVolume ( int dims[4] )

Get the raw pointer to the final computed space leaping datastructure. The result is only valid after Update() has been called on the filter. Note that this filter holds onto its memory. The dimensions of the min- max volume are in dims. The 4th value in the array indicates the number of independent components, (also queried via GetNumberOfIndependentComponents())

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::SetCache ( vtkImageData * imageCache )

virtual

INTERNAL - Do not use Set the last cached min-max volume, as used by vtkFixedPointVolumeRayCastMapper.

static void vtkVolumeRayCastSpaceLeapingImageFilter::ComputeInputExtentsForOutput	(	int	inExt[6],
		unsigned int	inDim[3],
		int	outExt[6],
		vtkImageData *	inData
	)

static

Compute the extents and dimensions of the input that's required to generate an output min-max structure given by outExt. INTERNAL - Do not use

unsigned short* vtkVolumeRayCastSpaceLeapingImageFilter::GetMinNonZeroScalarIndex ( )

Get the first non-zero scalar opacity and gradient opacity indices for each independent copmonent INTERNAL - Do not use.

unsigned char* vtkVolumeRayCastSpaceLeapingImageFilter::GetMinNonZeroGradientMagnitudeIndex ( )

Get the first non-zero scalar opacity and gradient opacity indices for each independent copmonent INTERNAL - Do not use.

void vtkVolumeRayCastSpaceLeapingImageFilter::SetGradientMagnitude ( unsigned char ** gradientMagnitude )

Pointer to the pre-computed gradient magnitude structure. This is pre- computed by the vtkFixedPointVolumeRayCastMapper class. This should be set if one has the ComputeGradientOpacity flag enabled.

unsigned char** vtkVolumeRayCastSpaceLeapingImageFilter::GetGradientMagnitude ( )

Pointer to the pre-computed gradient magnitude structure. This is pre- computed by the vtkFixedPointVolumeRayCastMapper class. This should be set if one has the ComputeGradientOpacity flag enabled.

void vtkVolumeRayCastSpaceLeapingImageFilter::SetScalarOpacityTable	(	int	c,
		unsigned short *	t
	)

Set the scalar opacity and gradient opacity tables computed for each component by the vtkFixedPointVolumeRayCastMapper

void vtkVolumeRayCastSpaceLeapingImageFilter::SetGradientOpacityTable	(	int	c,
		unsigned short *	t
	)

Set the scalar opacity and gradient opacity tables computed for each component by the vtkFixedPointVolumeRayCastMapper

unsigned long vtkVolumeRayCastSpaceLeapingImageFilter::ComputeOffset	(	int	ext[6],
		int	wholeExt[6],
		int	nComponents
	)

INTERNAL - Do not use Compute the offset within an image of whole extents wholeExt, to access the data starting at extents ext.

void vtkVolumeRayCastSpaceLeapingImageFilter::InternalRequestUpdateExtent	(	int *	,
		int *
	)

protected

virtual int vtkVolumeRayCastSpaceLeapingImageFilter::RequestUpdateExtent	(	vtkInformation *	,
		vtkInformationVector **	,
		vtkInformationVector *
	)

protectedvirtual

See superclass for details

Reimplemented from vtkImageAlgorithm.

void vtkVolumeRayCastSpaceLeapingImageFilter::ThreadedRequestData	(	vtkInformation *	request,
		vtkInformationVector **	inputVector,
		vtkInformationVector *	outputVector,
		vtkImageData ***	inData,
		vtkImageData **	outData,
		int	outExt[6],
		int	id
	)

protectedvirtual

See superclass for details

Reimplemented from vtkThreadedImageAlgorithm.

virtual int vtkVolumeRayCastSpaceLeapingImageFilter::RequestData	(	vtkInformation *	request,
		vtkInformationVector **	inputVector,
		vtkInformationVector *	outputVector
	)

protectedvirtual

See superclass for details

Reimplemented from vtkThreadedImageAlgorithm.

virtual int vtkVolumeRayCastSpaceLeapingImageFilter::RequestInformation	(	vtkInformation *	,
		vtkInformationVector **	,
		vtkInformationVector *
	)

protectedvirtual

See superclass for details

Reimplemented from vtkImageAlgorithm.

void vtkVolumeRayCastSpaceLeapingImageFilter::ComputeFirstNonZeroOpacityIndices ( )

protected

Compute the first non-zero scalar opacity and gradient opacity values that are encountered when marching from the beginning of the transfer function tables.

void vtkVolumeRayCastSpaceLeapingImageFilter::FillScalarOpacityFlags	(	vtkImageData *	minMaxVolume,
		int	outExt[6]
	)

protected

Fill the flags after processing the min/max/gradient structure. This optimized version is invoked when only scalar opacity table is needed.

void vtkVolumeRayCastSpaceLeapingImageFilter::FillScalarAndGradientOpacityFlags	(	vtkImageData *	minMaxVolume,
		int	outExt[6]
	)

protected

Fill the flags after processing the min/max/gradient structure. This optimized version is invoked when both scalar and gradient opacity tables need to be visited.

virtual void vtkVolumeRayCastSpaceLeapingImageFilter::AllocateOutputData	(	vtkImageData *	out,
		int *	uExtent
	)

protectedvirtual

Allocate the output data. If we have a cache with the same metadata as the output we are going to generate, re-use the cache as we may not be updating all data in the min-max structure.

Reimplemented from vtkImageAlgorithm.

virtual vtkImageData* vtkVolumeRayCastSpaceLeapingImageFilter::AllocateOutputData ( vtkDataObject * out )

protectedvirtual

Allocate the output data. If we have a cache with the same metadata as the output we are going to generate, re-use the cache as we may not be updating all data in the min-max structure.

Reimplemented from vtkImageAlgorithm.