A fixed point mapper for volumes. More...

#include <vtkFixedPointVolumeRayCastMapper.h>

Inheritance diagram for vtkFixedPointVolumeRayCastMapper:

Collaboration diagram for vtkFixedPointVolumeRayCastMapper:

Public Types
typedef vtkVolumeMapper	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkFixedPointVolumeRayCastMapper *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent)
void	Render (vtkRenderer , vtkVolume )
unsigned int	ToFixedPointPosition (float val)
void	ToFixedPointPosition (float in[3], unsigned int out[3])
unsigned int	ToFixedPointDirection (float dir)
void	ToFixedPointDirection (float in[3], unsigned int out[3])
void	FixedPointIncrement (unsigned int position[3], unsigned int increment[3])
void	GetFloatTripleFromPointer (float v[3], float *ptr)
void	GetUIntTripleFromPointer (unsigned int v[3], unsigned int *ptr)
void	ShiftVectorDown (unsigned int in[3], unsigned int out[3])
int	CheckMinMaxVolumeFlag (unsigned int pos[3], int c)
int	CheckMIPMinMaxVolumeFlag (unsigned int pos[3], int c, unsigned short maxIdx, int flip)
void	LookupColorUC (unsigned short colorTable, unsigned short scalarOpacityTable, unsigned short index, unsigned char color[4])
void	LookupDependentColorUC (unsigned short colorTable, unsigned short scalarOpacityTable, unsigned short index[4], int components, unsigned char color[4])
void	LookupAndCombineIndependentColorsUC (unsigned short colorTable[4], unsigned short scalarOpacityTable[4], unsigned short index[4], float weights[4], int components, unsigned char color[4])
int	CheckIfCropped (unsigned int pos[3])
virtual vtkRenderWindow *	GetRenderWindow ()
virtual vtkFixedPointVolumeRayCastMIPHelper *	GetMIPHelper ()
virtual vtkFixedPointVolumeRayCastCompositeHelper *	GetCompositeHelper ()
virtual vtkFixedPointVolumeRayCastCompositeGOHelper *	GetCompositeGOHelper ()
virtual vtkFixedPointVolumeRayCastCompositeGOShadeHelper *	GetCompositeGOShadeHelper ()
virtual vtkFixedPointVolumeRayCastCompositeShadeHelper *	GetCompositeShadeHelper ()
virtual float *	GetTableShift ()
virtual void	GetTableShift (float data[4])
virtual float *	GetTableScale ()
virtual void	GetTableScale (float data[4])
virtual int	GetShadingRequired ()
virtual int	GetGradientOpacityRequired ()
virtual vtkDataArray *	GetCurrentScalars ()
virtual vtkDataArray *	GetPreviousScalars ()
int *	GetRowBounds ()
unsigned short *	GetColorTable (int c)
unsigned short *	GetScalarOpacityTable (int c)
unsigned short *	GetGradientOpacityTable (int c)
vtkVolume *	GetVolume ()
unsigned short **	GetGradientNormal ()
unsigned char **	GetGradientMagnitude ()
unsigned short *	GetDiffuseShadingTable (int c)
unsigned short *	GetSpecularShadingTable (int c)
void	ComputeRayInfo (int x, int y, unsigned int pos[3], unsigned int dir[3], unsigned int *numSteps)
void	InitializeRayInfo (vtkVolume *vol)
int	ShouldUseNearestNeighborInterpolation (vtkVolume *vol)
int	PerImageInitialization (vtkRenderer , vtkVolume , int, double , double , int *)
void	PerVolumeInitialization (vtkRenderer , vtkVolume )
void	PerSubVolumeInitialization (vtkRenderer , vtkVolume , int)
void	RenderSubVolume ()
void	DisplayRenderedImage (vtkRenderer , vtkVolume )
void	AbortRender ()
void	CreateCanonicalView (vtkVolume volume, vtkImageData image, int blend_mode, double viewDirection[3], double viewUp[3])
virtual int	GetFlipMIPComparison ()
virtual void	ReleaseGraphicsResources (vtkWindow *)

virtual void	SetSampleDistance (float)
virtual float	GetSampleDistance ()

virtual void	SetInteractiveSampleDistance (float)
virtual float	GetInteractiveSampleDistance ()

virtual void	SetImageSampleDistance (float)
virtual float	GetImageSampleDistance ()

virtual void	SetMinimumImageSampleDistance (float)
virtual float	GetMinimumImageSampleDistance ()

virtual void	SetMaximumImageSampleDistance (float)
virtual float	GetMaximumImageSampleDistance ()

virtual void	SetAutoAdjustSampleDistances (int)
virtual int	GetAutoAdjustSampleDistances ()
virtual void	AutoAdjustSampleDistancesOn ()
virtual void	AutoAdjustSampleDistancesOff ()

virtual void	SetLockSampleDistanceToInputSpacing (int)
virtual int	GetLockSampleDistanceToInputSpacing ()
virtual void	LockSampleDistanceToInputSpacingOn ()
virtual void	LockSampleDistanceToInputSpacingOff ()

void	SetNumberOfThreads (int num)
int	GetNumberOfThreads ()

virtual void	SetIntermixIntersectingGeometry (int)
virtual int	GetIntermixIntersectingGeometry ()
virtual void	IntermixIntersectingGeometryOn ()
virtual void	IntermixIntersectingGeometryOff ()

float	ComputeRequiredImageSampleDistance (float desiredTime, vtkRenderer *ren)
float	ComputeRequiredImageSampleDistance (float desiredTime, vtkRenderer ren, vtkVolume vol)

void	SetRayCastImage (vtkFixedPointRayCastImage *)
virtual vtkFixedPointRayCastImage *	GetRayCastImage ()

float	GetEstimatedRenderTime (vtkRenderer ren, vtkVolume vol)
float	GetEstimatedRenderTime (vtkRenderer *ren)

virtual void	SetFinalColorWindow (float)
virtual float	GetFinalColorWindow ()
virtual void	SetFinalColorLevel (float)
virtual float	GetFinalColorLevel ()
Static Public Member Functions
static vtkFixedPointVolumeRayCastMapper *	New ()
static int	IsTypeOf (const char *type)
static vtkFixedPointVolumeRayCastMapper *	SafeDownCast (vtkObjectBase *o)
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkFixedPointVolumeRayCastMapper ()
	~vtkFixedPointVolumeRayCastMapper ()
void	ComputeMatrices (double volumeOrigin[3], double volumeSpacing[3], int volumeExtent[6], vtkRenderer ren, vtkVolume vol)
int	ComputeRowBounds (vtkRenderer *ren, int imageFlag, int rowBoundsFlag, int volumeExtent[6])
void	CaptureZBuffer (vtkRenderer *ren)
void	StoreRenderTime (vtkRenderer ren, vtkVolume vol, float t)
float	RetrieveRenderTime (vtkRenderer ren, vtkVolume vol)
float	RetrieveRenderTime (vtkRenderer *ren)
int	ClipRayAgainstVolume (float rayStart[3], float rayEnd[3], float rayDirection[3], double bounds[6])
int	UpdateColorTable (vtkVolume *vol)
int	UpdateGradients (vtkVolume *vol)
int	UpdateShadingTable (vtkRenderer ren, vtkVolume vol)
void	UpdateCroppingRegions ()
void	ComputeGradients (vtkVolume *vol)
int	ClipRayAgainstClippingPlanes (float rayStart[3], float rayEnd[3], int numClippingPlanes, float *clippingPlanes)
float	GetZBufferValue (int x, int y)
void	UpdateMinMaxVolume (vtkVolume *vol)
void	FillInMaxGradientMagnitudes (int fullDim[3], int smallDim[3])
void	ApplyFinalColorWindowLevel ()
Protected Attributes
vtkRayCastImageDisplayHelper *	ImageDisplayHelper
float	SampleDistance
float	InteractiveSampleDistance
float	ImageSampleDistance
float	MinimumImageSampleDistance
float	MaximumImageSampleDistance
int	AutoAdjustSampleDistances
int	LockSampleDistanceToInputSpacing
float	OldSampleDistance
float	OldImageSampleDistance
vtkMultiThreader *	Threader
vtkMatrix4x4 *	PerspectiveMatrix
vtkMatrix4x4 *	ViewToWorldMatrix
vtkMatrix4x4 *	ViewToVoxelsMatrix
vtkMatrix4x4 *	VoxelsToViewMatrix
vtkMatrix4x4 *	WorldToVoxelsMatrix
vtkMatrix4x4 *	VoxelsToWorldMatrix
vtkMatrix4x4 *	VolumeMatrix
vtkTransform *	PerspectiveTransform
vtkTransform *	VoxelsTransform
vtkTransform *	VoxelsToViewTransform
vtkFixedPointRayCastImage *	RayCastImage
int *	RowBounds
int *	OldRowBounds
float *	RenderTimeTable
vtkVolume **	RenderVolumeTable
vtkRenderer **	RenderRendererTable
int	RenderTableSize
int	RenderTableEntries
int	IntermixIntersectingGeometry
float	MinimumViewDistance
vtkColorTransferFunction *	SavedRGBFunction [4]
vtkPiecewiseFunction *	SavedGrayFunction [4]
vtkPiecewiseFunction *	SavedScalarOpacityFunction [4]
vtkPiecewiseFunction *	SavedGradientOpacityFunction [4]
int	SavedColorChannels [4]
float	SavedScalarOpacityDistance [4]
int	SavedBlendMode
vtkImageData *	SavedParametersInput
vtkTimeStamp	SavedParametersMTime
vtkImageData *	SavedGradientsInput
vtkTimeStamp	SavedGradientsMTime
float	SavedSampleDistance
unsigned short	ColorTable [4][32768 *3]
unsigned short	ScalarOpacityTable [4][32768]
unsigned short	GradientOpacityTable [4][256]
int	TableSize [4]
float	TableScale [4]
float	TableShift [4]
float	GradientMagnitudeScale [4]
float	GradientMagnitudeShift [4]
unsigned short **	GradientNormal
unsigned char **	GradientMagnitude
unsigned short *	ContiguousGradientNormal
unsigned char *	ContiguousGradientMagnitude
int	NumberOfGradientSlices
vtkDirectionEncoder *	DirectionEncoder
vtkEncodedGradientShader *	GradientShader
vtkFiniteDifferenceGradientEstimator *	GradientEstimator
unsigned short	DiffuseShadingTable [4][65536 *3]
unsigned short	SpecularShadingTable [4][65536 *3]
int	ShadingRequired
int	GradientOpacityRequired
vtkDataArray *	CurrentScalars
vtkDataArray *	PreviousScalars
vtkRenderWindow *	RenderWindow
vtkVolume *	Volume
unsigned int	FixedPointCroppingRegionPlanes [6]
unsigned int	CroppingRegionMask [27]
vtkFixedPointVolumeRayCastMIPHelper *	MIPHelper
vtkFixedPointVolumeRayCastCompositeHelper *	CompositeHelper
vtkFixedPointVolumeRayCastCompositeGOHelper *	CompositeGOHelper
vtkFixedPointVolumeRayCastCompositeShadeHelper *	CompositeShadeHelper
vtkFixedPointVolumeRayCastCompositeGOShadeHelper *	CompositeGOShadeHelper
float	ViewToVoxelsArray [16]
float	WorldToVoxelsArray [16]
float	VoxelsToWorldArray [16]
double	CroppingBounds [6]
int	NumTransformedClippingPlanes
float *	TransformedClippingPlanes
double	SavedSpacing [3]
unsigned short *	MinMaxVolume
int	MinMaxVolumeSize [4]
vtkImageData *	SavedMinMaxInput
vtkImageData *	MinMaxVolumeCache
vtkVolumeRayCastSpaceLeapingImageFilter *	SpaceLeapFilter
float	FinalColorWindow
float	FinalColorLevel
int	FlipMIPComparison
Friends
VTK_THREAD_RETURN_TYPE	FixedPointVolumeRayCastMapper_CastRays (void *arg)
VTK_THREAD_RETURN_TYPE	vtkFPVRCMSwitchOnDataType (void *arg)

Detailed Description

A fixed point mapper for volumes.

This is a software ray caster for rendering volumes in vtkImageData. It works with all input data types and up to four components. It performs composite or MIP rendering, and can be intermixed with geometric data. Space leaping is used to speed up the rendering process. In addition, calculation are performed in 15 bit fixed point precision. This mapper is threaded, and will interleave scan lines across processors.

WARNING: This ray caster may not produce consistent results when the number of threads exceeds 1. The class warns if the number of threads > 1. The differences may be subtle. Applications should decide if the trade-off in performance is worth the lack of consistency.

This mapper is a good replacement for vtkVolumeRayCastMapper EXCEPT:

it does not do isosurface ray casting
it does only interpolate before classify compositing
it does only maximum scalar value MIP

The vtkVolumeRayCastMapper CANNOT be used in these instances when a vtkFixedPointVolumeRayCastMapper can be used:

if the data is not unsigned char or unsigned short
if the data has more than one component

This mapper handles all data type from unsigned char through double. However, some of the internal calcultions are performed in float and therefore even the full float range may cause problems for this mapper (both in scalar data values and in spacing between samples).

Space leaping is performed by creating a sub-sampled volume. 4x4x4 cells in the original volume are represented by a min, max, and combined gradient and flag value. The min max volume has three unsigned shorts per 4x4x4 group of cells from the original volume - one reprenting the minimum scalar index (the scalar value adjusted to fit in the 15 bit range), the maximum scalar index, and a third unsigned short which is both the maximum gradient opacity in the neighborhood (an unsigned char) and the flag that is filled in for the current lookup tables to indicate whether this region can be skipped.

See also:: vtkVolumeMapper

Events:: vtkCommand::VolumeMapperRenderEndEvent vtkCommand::VolumeMapperComputeGradientsEndEvent vtkCommand::VolumeMapperComputeGradientsProgressEvent vtkCommand::VolumeMapperComputeGradientsStartEvent vtkCommand::VolumeMapperRenderStartEvent

Examples:: vtkFixedPointVolumeRayCastMapper (Examples)

Tests:: vtkFixedPointVolumeRayCastMapper (Tests)

Definition at line 109 of file vtkFixedPointVolumeRayCastMapper.h.

Member Typedef Documentation

typedef vtkVolumeMapper vtkFixedPointVolumeRayCastMapper::Superclass

Reimplemented from vtkVolumeMapper.

Definition at line 113 of file vtkFixedPointVolumeRayCastMapper.h.

Constructor & Destructor Documentation

vtkFixedPointVolumeRayCastMapper::vtkFixedPointVolumeRayCastMapper ( ) [protected]

vtkFixedPointVolumeRayCastMapper::~vtkFixedPointVolumeRayCastMapper ( ) [protected]

Member Function Documentation

static vtkFixedPointVolumeRayCastMapper* vtkFixedPointVolumeRayCastMapper::New ( ) [static]

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

Reimplemented from vtkAlgorithm.

static int vtkFixedPointVolumeRayCastMapper::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 vtkVolumeMapper.

virtual int vtkFixedPointVolumeRayCastMapper::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 vtkVolumeMapper.

static vtkFixedPointVolumeRayCastMapper* vtkFixedPointVolumeRayCastMapper::SafeDownCast ( vtkObjectBase * o ) [static]

Reimplemented from vtkVolumeMapper.

virtual vtkObjectBase* vtkFixedPointVolumeRayCastMapper::NewInstanceInternal ( ) const [protected, virtual]

Reimplemented from vtkVolumeMapper.

vtkFixedPointVolumeRayCastMapper* vtkFixedPointVolumeRayCastMapper::NewInstance ( ) const

Reimplemented from vtkVolumeMapper.

void vtkFixedPointVolumeRayCastMapper::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 vtkVolumeMapper.

virtual void vtkFixedPointVolumeRayCastMapper::SetSampleDistance ( float ) [virtual]

Set/Get the distance between samples used for rendering when AutoAdjustSampleDistances is off, or when this mapper has more than 1 second allocated to it for rendering.

virtual float vtkFixedPointVolumeRayCastMapper::GetSampleDistance ( ) [virtual]

Set/Get the distance between samples used for rendering when AutoAdjustSampleDistances is off, or when this mapper has more than 1 second allocated to it for rendering.

virtual void vtkFixedPointVolumeRayCastMapper::SetInteractiveSampleDistance ( float ) [virtual]

Set/Get the distance between samples when interactive rendering is happening. In this case, interactive is defined as this volume mapper having less than 1 second allocated for rendering. When AutoAdjustSampleDistance is On, and the allocated render time is less than 1 second, then this InteractiveSampleDistance will be used instead of the SampleDistance above.

virtual float vtkFixedPointVolumeRayCastMapper::GetInteractiveSampleDistance ( ) [virtual]

Set/Get the distance between samples when interactive rendering is happening. In this case, interactive is defined as this volume mapper having less than 1 second allocated for rendering. When AutoAdjustSampleDistance is On, and the allocated render time is less than 1 second, then this InteractiveSampleDistance will be used instead of the SampleDistance above.

virtual void vtkFixedPointVolumeRayCastMapper::SetImageSampleDistance ( float ) [virtual]

Sampling distance in the XY image dimensions. Default value of 1 meaning 1 ray cast per pixel. If set to 0.5, 4 rays will be cast per pixel. If set to 2.0, 1 ray will be cast for every 4 (2 by 2) pixels. This value will be adjusted to meet a desired frame rate when AutoAdjustSampleDistances is on.

virtual float vtkFixedPointVolumeRayCastMapper::GetImageSampleDistance ( ) [virtual]

Sampling distance in the XY image dimensions. Default value of 1 meaning 1 ray cast per pixel. If set to 0.5, 4 rays will be cast per pixel. If set to 2.0, 1 ray will be cast for every 4 (2 by 2) pixels. This value will be adjusted to meet a desired frame rate when AutoAdjustSampleDistances is on.

virtual void vtkFixedPointVolumeRayCastMapper::SetMinimumImageSampleDistance ( float ) [virtual]

This is the minimum image sample distance allow when the image sample distance is being automatically adjusted.

virtual float vtkFixedPointVolumeRayCastMapper::GetMinimumImageSampleDistance ( ) [virtual]

This is the minimum image sample distance allow when the image sample distance is being automatically adjusted.

virtual void vtkFixedPointVolumeRayCastMapper::SetMaximumImageSampleDistance ( float ) [virtual]

This is the maximum image sample distance allow when the image sample distance is being automatically adjusted.

virtual float vtkFixedPointVolumeRayCastMapper::GetMaximumImageSampleDistance ( ) [virtual]

This is the maximum image sample distance allow when the image sample distance is being automatically adjusted.

virtual void vtkFixedPointVolumeRayCastMapper::SetAutoAdjustSampleDistances ( int ) [virtual]

If AutoAdjustSampleDistances is on, the the ImageSampleDistance and the SampleDistance will be varied to achieve the allocated render time of this prop (controlled by the desired update rate and any culling in use). If this is an interactive render (more than 1 frame per second) the SampleDistance will be increased, otherwise it will not be altered (a binary decision, as opposed to the ImageSampleDistance which will vary continuously).

virtual int vtkFixedPointVolumeRayCastMapper::GetAutoAdjustSampleDistances ( ) [virtual]

If AutoAdjustSampleDistances is on, the the ImageSampleDistance and the SampleDistance will be varied to achieve the allocated render time of this prop (controlled by the desired update rate and any culling in use). If this is an interactive render (more than 1 frame per second) the SampleDistance will be increased, otherwise it will not be altered (a binary decision, as opposed to the ImageSampleDistance which will vary continuously).

virtual void vtkFixedPointVolumeRayCastMapper::AutoAdjustSampleDistancesOn ( ) [virtual]

If AutoAdjustSampleDistances is on, the the ImageSampleDistance and the SampleDistance will be varied to achieve the allocated render time of this prop (controlled by the desired update rate and any culling in use). If this is an interactive render (more than 1 frame per second) the SampleDistance will be increased, otherwise it will not be altered (a binary decision, as opposed to the ImageSampleDistance which will vary continuously).

virtual void vtkFixedPointVolumeRayCastMapper::AutoAdjustSampleDistancesOff ( ) [virtual]

If AutoAdjustSampleDistances is on, the the ImageSampleDistance and the SampleDistance will be varied to achieve the allocated render time of this prop (controlled by the desired update rate and any culling in use). If this is an interactive render (more than 1 frame per second) the SampleDistance will be increased, otherwise it will not be altered (a binary decision, as opposed to the ImageSampleDistance which will vary continuously).

virtual void vtkFixedPointVolumeRayCastMapper::SetLockSampleDistanceToInputSpacing ( int ) [virtual]

Automatically compute the sample distance from the data spacing. When the number of voxels is 8, the sample distance will be roughly 1/200 the average voxel size. The distance will grow proportionally to numVoxels^(1/3) until it reaches 1/2 average voxel size when number of voxels is 1E6. Note that ScalarOpacityUnitDistance is still taken into account and if different than 1, will effect the sample distance.

virtual int vtkFixedPointVolumeRayCastMapper::GetLockSampleDistanceToInputSpacing ( ) [virtual]

Automatically compute the sample distance from the data spacing. When the number of voxels is 8, the sample distance will be roughly 1/200 the average voxel size. The distance will grow proportionally to numVoxels^(1/3) until it reaches 1/2 average voxel size when number of voxels is 1E6. Note that ScalarOpacityUnitDistance is still taken into account and if different than 1, will effect the sample distance.

virtual void vtkFixedPointVolumeRayCastMapper::LockSampleDistanceToInputSpacingOn ( ) [virtual]

Automatically compute the sample distance from the data spacing. When the number of voxels is 8, the sample distance will be roughly 1/200 the average voxel size. The distance will grow proportionally to numVoxels^(1/3) until it reaches 1/2 average voxel size when number of voxels is 1E6. Note that ScalarOpacityUnitDistance is still taken into account and if different than 1, will effect the sample distance.

virtual void vtkFixedPointVolumeRayCastMapper::LockSampleDistanceToInputSpacingOff ( ) [virtual]

Automatically compute the sample distance from the data spacing. When the number of voxels is 8, the sample distance will be roughly 1/200 the average voxel size. The distance will grow proportionally to numVoxels^(1/3) until it reaches 1/2 average voxel size when number of voxels is 1E6. Note that ScalarOpacityUnitDistance is still taken into account and if different than 1, will effect the sample distance.

void vtkFixedPointVolumeRayCastMapper::SetNumberOfThreads ( int num )

Set/Get the number of threads to use. This by default is equal to the number of available processors detected. WARNING: If number of threads > 1, results may not be consistent.

int vtkFixedPointVolumeRayCastMapper::GetNumberOfThreads ( )

Set/Get the number of threads to use. This by default is equal to the number of available processors detected. WARNING: If number of threads > 1, results may not be consistent.

virtual void vtkFixedPointVolumeRayCastMapper::SetIntermixIntersectingGeometry ( int ) [virtual]

If IntermixIntersectingGeometry is turned on, the zbuffer will be captured and used to limit the traversal of the rays.

virtual int vtkFixedPointVolumeRayCastMapper::GetIntermixIntersectingGeometry ( ) [virtual]

If IntermixIntersectingGeometry is turned on, the zbuffer will be captured and used to limit the traversal of the rays.

virtual void vtkFixedPointVolumeRayCastMapper::IntermixIntersectingGeometryOn ( ) [virtual]

If IntermixIntersectingGeometry is turned on, the zbuffer will be captured and used to limit the traversal of the rays.

virtual void vtkFixedPointVolumeRayCastMapper::IntermixIntersectingGeometryOff ( ) [virtual]

If IntermixIntersectingGeometry is turned on, the zbuffer will be captured and used to limit the traversal of the rays.

float vtkFixedPointVolumeRayCastMapper::ComputeRequiredImageSampleDistance	(	float	desiredTime,
		vtkRenderer *	ren
	)

What is the image sample distance required to achieve the desired time? A version of this method is provided that does not require the volume argument since if you are using an LODProp3D you may not know this information. If you use this version you must be certain that the ray cast mapper is only used for one volume (and not shared among multiple volumes)

float vtkFixedPointVolumeRayCastMapper::ComputeRequiredImageSampleDistance	(	float	desiredTime,
		vtkRenderer *	ren,
		vtkVolume *	vol
	)

What is the image sample distance required to achieve the desired time? A version of this method is provided that does not require the volume argument since if you are using an LODProp3D you may not know this information. If you use this version you must be certain that the ray cast mapper is only used for one volume (and not shared among multiple volumes)

void vtkFixedPointVolumeRayCastMapper::Render	(	vtkRenderer *	,
		vtkVolume *
	)		`[virtual]`

WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE Initialize rendering for this volume.

Implements vtkVolumeMapper.

unsigned int vtkFixedPointVolumeRayCastMapper::ToFixedPointPosition ( float val ) [inline]

Definition at line 541 of file vtkFixedPointVolumeRayCastMapper.h.

void vtkFixedPointVolumeRayCastMapper::ToFixedPointPosition	(	float	in[3],
		unsigned int	out[3]
	)		`[inline]`

Definition at line 546 of file vtkFixedPointVolumeRayCastMapper.h.

unsigned int vtkFixedPointVolumeRayCastMapper::ToFixedPointDirection ( float dir ) [inline]

Definition at line 553 of file vtkFixedPointVolumeRayCastMapper.h.

void vtkFixedPointVolumeRayCastMapper::ToFixedPointDirection	(	float	in[3],
		unsigned int	out[3]
	)		`[inline]`

Definition at line 560 of file vtkFixedPointVolumeRayCastMapper.h.

void vtkFixedPointVolumeRayCastMapper::FixedPointIncrement	(	unsigned int	position[3],
		unsigned int	increment[3]
	)		`[inline]`

Definition at line 576 of file vtkFixedPointVolumeRayCastMapper.h.

void vtkFixedPointVolumeRayCastMapper::GetFloatTripleFromPointer	(	float	v[3],
		float *	ptr
	)		`[inline]`

Definition at line 605 of file vtkFixedPointVolumeRayCastMapper.h.

void vtkFixedPointVolumeRayCastMapper::GetUIntTripleFromPointer	(	unsigned int	v[3],
		unsigned int *	ptr
	)		`[inline]`

Definition at line 612 of file vtkFixedPointVolumeRayCastMapper.h.

void vtkFixedPointVolumeRayCastMapper::ShiftVectorDown	(	unsigned int	in[3],
		unsigned int	out[3]
	)		`[inline]`

Definition at line 619 of file vtkFixedPointVolumeRayCastMapper.h.

int vtkFixedPointVolumeRayCastMapper::CheckMinMaxVolumeFlag	(	unsigned int	pos[3],
		int	c
	)		`[inline]`

Definition at line 627 of file vtkFixedPointVolumeRayCastMapper.h.

int vtkFixedPointVolumeRayCastMapper::CheckMIPMinMaxVolumeFlag	(	unsigned int	pos[3],
		int	c,
		unsigned short	maxIdx,
		int	flip
	)		`[inline]`

Definition at line 639 of file vtkFixedPointVolumeRayCastMapper.h.

void vtkFixedPointVolumeRayCastMapper::LookupColorUC	(	unsigned short *	colorTable,
		unsigned short *	scalarOpacityTable,
		unsigned short	index,
		unsigned char	color[4]
	)		`[inline]`

Definition at line 666 of file vtkFixedPointVolumeRayCastMapper.h.

void vtkFixedPointVolumeRayCastMapper::LookupDependentColorUC	(	unsigned short *	colorTable,
		unsigned short *	scalarOpacityTable,
		unsigned short	index[4],
		int	components,
		unsigned char	color[4]
	)		`[inline]`

Definition at line 681 of file vtkFixedPointVolumeRayCastMapper.h.

void vtkFixedPointVolumeRayCastMapper::LookupAndCombineIndependentColorsUC	(	unsigned short *	colorTable[4],
		unsigned short *	scalarOpacityTable[4],
		unsigned short	index[4],
		float	weights[4],
		int	components,
		unsigned char	color[4]
	)		`[inline]`

Definition at line 711 of file vtkFixedPointVolumeRayCastMapper.h.

int vtkFixedPointVolumeRayCastMapper::CheckIfCropped ( unsigned int pos[3] ) [inline]

Definition at line 736 of file vtkFixedPointVolumeRayCastMapper.h.

virtual vtkRenderWindow* vtkFixedPointVolumeRayCastMapper::GetRenderWindow ( ) [virtual]

virtual vtkFixedPointVolumeRayCastMIPHelper* vtkFixedPointVolumeRayCastMapper::GetMIPHelper ( ) [virtual]

virtual vtkFixedPointVolumeRayCastCompositeHelper* vtkFixedPointVolumeRayCastMapper::GetCompositeHelper ( ) [virtual]

virtual vtkFixedPointVolumeRayCastCompositeGOHelper* vtkFixedPointVolumeRayCastMapper::GetCompositeGOHelper ( ) [virtual]

virtual vtkFixedPointVolumeRayCastCompositeGOShadeHelper* vtkFixedPointVolumeRayCastMapper::GetCompositeGOShadeHelper ( ) [virtual]

virtual vtkFixedPointVolumeRayCastCompositeShadeHelper* vtkFixedPointVolumeRayCastMapper::GetCompositeShadeHelper ( ) [virtual]

virtual float* vtkFixedPointVolumeRayCastMapper::GetTableShift ( ) [virtual]

virtual void vtkFixedPointVolumeRayCastMapper::GetTableShift ( float data[4] ) [virtual]

virtual float* vtkFixedPointVolumeRayCastMapper::GetTableScale ( ) [virtual]

virtual void vtkFixedPointVolumeRayCastMapper::GetTableScale ( float data[4] ) [virtual]

virtual int vtkFixedPointVolumeRayCastMapper::GetShadingRequired ( ) [virtual]

virtual int vtkFixedPointVolumeRayCastMapper::GetGradientOpacityRequired ( ) [virtual]

virtual vtkDataArray* vtkFixedPointVolumeRayCastMapper::GetCurrentScalars ( ) [virtual]

virtual vtkDataArray* vtkFixedPointVolumeRayCastMapper::GetPreviousScalars ( ) [virtual]

int* vtkFixedPointVolumeRayCastMapper::GetRowBounds ( ) [inline]

Definition at line 266 of file vtkFixedPointVolumeRayCastMapper.h.

unsigned short* vtkFixedPointVolumeRayCastMapper::GetColorTable ( int c ) [inline]

Definition at line 267 of file vtkFixedPointVolumeRayCastMapper.h.

unsigned short* vtkFixedPointVolumeRayCastMapper::GetScalarOpacityTable ( int c ) [inline]

Definition at line 268 of file vtkFixedPointVolumeRayCastMapper.h.

unsigned short* vtkFixedPointVolumeRayCastMapper::GetGradientOpacityTable ( int c ) [inline]

Definition at line 269 of file vtkFixedPointVolumeRayCastMapper.h.

vtkVolume* vtkFixedPointVolumeRayCastMapper::GetVolume ( ) [inline]

Definition at line 270 of file vtkFixedPointVolumeRayCastMapper.h.

unsigned short** vtkFixedPointVolumeRayCastMapper::GetGradientNormal ( ) [inline]

Definition at line 271 of file vtkFixedPointVolumeRayCastMapper.h.

unsigned char** vtkFixedPointVolumeRayCastMapper::GetGradientMagnitude ( ) [inline]

Definition at line 272 of file vtkFixedPointVolumeRayCastMapper.h.

unsigned short* vtkFixedPointVolumeRayCastMapper::GetDiffuseShadingTable ( int c ) [inline]

Definition at line 273 of file vtkFixedPointVolumeRayCastMapper.h.

unsigned short* vtkFixedPointVolumeRayCastMapper::GetSpecularShadingTable ( int c ) [inline]

Definition at line 274 of file vtkFixedPointVolumeRayCastMapper.h.

void vtkFixedPointVolumeRayCastMapper::ComputeRayInfo	(	int	x,
		int	y,
		unsigned int	pos[3],
		unsigned int	dir[3],
		unsigned int *	numSteps
	)

void vtkFixedPointVolumeRayCastMapper::InitializeRayInfo ( vtkVolume * vol )

int vtkFixedPointVolumeRayCastMapper::ShouldUseNearestNeighborInterpolation ( vtkVolume * vol )

void vtkFixedPointVolumeRayCastMapper::SetRayCastImage ( vtkFixedPointRayCastImage * )

Set / Get the underlying image object. One will be automatically created - only need to set it when using from an AMR mapper which renders multiple times into the same image.

virtual vtkFixedPointRayCastImage* vtkFixedPointVolumeRayCastMapper::GetRayCastImage ( ) [virtual]

Set / Get the underlying image object. One will be automatically created - only need to set it when using from an AMR mapper which renders multiple times into the same image.

int vtkFixedPointVolumeRayCastMapper::PerImageInitialization	(	vtkRenderer *	,
		vtkVolume *	,
		int	,
		double *	,
		double *	,
		int *
	)

void vtkFixedPointVolumeRayCastMapper::PerVolumeInitialization	(	vtkRenderer *	,
		vtkVolume *
	)

void vtkFixedPointVolumeRayCastMapper::PerSubVolumeInitialization	(	vtkRenderer *	,
		vtkVolume *	,
		int
	)

void vtkFixedPointVolumeRayCastMapper::RenderSubVolume ( )

void vtkFixedPointVolumeRayCastMapper::DisplayRenderedImage	(	vtkRenderer *	,
		vtkVolume *
	)

void vtkFixedPointVolumeRayCastMapper::AbortRender ( )

void vtkFixedPointVolumeRayCastMapper::CreateCanonicalView	(	vtkVolume *	volume,
		vtkImageData *	image,
		int	blend_mode,
		double	viewDirection[3],
		double	viewUp[3]
	)

float vtkFixedPointVolumeRayCastMapper::GetEstimatedRenderTime	(	vtkRenderer *	ren,
		vtkVolume *	vol
	)		`[inline]`

Get an estimate of the rendering time for a given volume / renderer. Only valid if this mapper has been used to render that volume for that renderer previously. Estimate is good when the viewing parameters have not changed much since that last render.

Definition at line 312 of file vtkFixedPointVolumeRayCastMapper.h.

float vtkFixedPointVolumeRayCastMapper::GetEstimatedRenderTime ( vtkRenderer * ren ) [inline]

Get an estimate of the rendering time for a given volume / renderer. Only valid if this mapper has been used to render that volume for that renderer previously. Estimate is good when the viewing parameters have not changed much since that last render.

Definition at line 315 of file vtkFixedPointVolumeRayCastMapper.h.

virtual void vtkFixedPointVolumeRayCastMapper::SetFinalColorWindow ( float ) [virtual]

Set/Get the window / level applied to the final color. This allows brightness / contrast adjustments on the final image. window is the width of the window. level is the center of the window. Initial window value is 1.0 Initial level value is 0.5 window cannot be null but can be negative, this way values will be reversed. |window| can be larger than 1.0 level can be any real value.

virtual float vtkFixedPointVolumeRayCastMapper::GetFinalColorWindow ( ) [virtual]

Set/Get the window / level applied to the final color. This allows brightness / contrast adjustments on the final image. window is the width of the window. level is the center of the window. Initial window value is 1.0 Initial level value is 0.5 window cannot be null but can be negative, this way values will be reversed. |window| can be larger than 1.0 level can be any real value.

virtual void vtkFixedPointVolumeRayCastMapper::SetFinalColorLevel ( float ) [virtual]

Set/Get the window / level applied to the final color. This allows brightness / contrast adjustments on the final image. window is the width of the window. level is the center of the window. Initial window value is 1.0 Initial level value is 0.5 window cannot be null but can be negative, this way values will be reversed. |window| can be larger than 1.0 level can be any real value.

virtual float vtkFixedPointVolumeRayCastMapper::GetFinalColorLevel ( ) [virtual]

Set/Get the window / level applied to the final color. This allows brightness / contrast adjustments on the final image. window is the width of the window. level is the center of the window. Initial window value is 1.0 Initial level value is 0.5 window cannot be null but can be negative, this way values will be reversed. |window| can be larger than 1.0 level can be any real value.

virtual int vtkFixedPointVolumeRayCastMapper::GetFlipMIPComparison ( ) [virtual]

virtual void vtkFixedPointVolumeRayCastMapper::ReleaseGraphicsResources ( vtkWindow * ) [virtual]

WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE Release any graphics resources that are being consumed by this mapper. The parameter window could be used to determine which graphic resources to release.

Reimplemented from vtkVolumeMapper.

void vtkFixedPointVolumeRayCastMapper::ComputeMatrices	(	double	volumeOrigin[3],
		double	volumeSpacing[3],
		int	volumeExtent[6],
		vtkRenderer *	ren,
		vtkVolume *	vol
	)		`[protected]`

int vtkFixedPointVolumeRayCastMapper::ComputeRowBounds	(	vtkRenderer *	ren,
		int	imageFlag,
		int	rowBoundsFlag,
		int	volumeExtent[6]
	)		`[protected]`

void vtkFixedPointVolumeRayCastMapper::CaptureZBuffer ( vtkRenderer * ren ) [protected]

void vtkFixedPointVolumeRayCastMapper::StoreRenderTime	(	vtkRenderer *	ren,
		vtkVolume *	vol,
		float	t
	)		`[protected]`

float vtkFixedPointVolumeRayCastMapper::RetrieveRenderTime	(	vtkRenderer *	ren,
		vtkVolume *	vol
	)		`[protected]`

float vtkFixedPointVolumeRayCastMapper::RetrieveRenderTime ( vtkRenderer * ren ) [protected]

int vtkFixedPointVolumeRayCastMapper::ClipRayAgainstVolume	(	float	rayStart[3],
		float	rayEnd[3],
		float	rayDirection[3],
		double	bounds[6]
	)		`[protected]`

int vtkFixedPointVolumeRayCastMapper::UpdateColorTable ( vtkVolume * vol ) [protected]

int vtkFixedPointVolumeRayCastMapper::UpdateGradients ( vtkVolume * vol ) [protected]

int vtkFixedPointVolumeRayCastMapper::UpdateShadingTable	(	vtkRenderer *	ren,
		vtkVolume *	vol
	)		`[protected]`

void vtkFixedPointVolumeRayCastMapper::UpdateCroppingRegions ( ) [protected]

void vtkFixedPointVolumeRayCastMapper::ComputeGradients ( vtkVolume * vol ) [protected]

int vtkFixedPointVolumeRayCastMapper::ClipRayAgainstClippingPlanes	(	float	rayStart[3],
		float	rayEnd[3],
		int	numClippingPlanes,
		float *	clippingPlanes
	)		`[protected]`