vtkImageMarchingCubes Class Reference

#include <vtkImageMarchingCubes.h>

Inheritance diagram for vtkImageMarchingCubes:

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Collaboration diagram for vtkImageMarchingCubes:

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List of all members.

Detailed Description

generate isosurface(s) from volume/images

vtkImageMarchingCubes is a filter that takes as input images (e.g., 3D image region) and generates on output one or more isosurfaces. One or more contour values must be specified to generate the isosurfaces. Alternatively, you can specify a min/max scalar range and the number of contours to generate a series of evenly spaced contour values. This filter can stream, so that the entire volume need not be loaded at once. Streaming is controlled using the instance variable InputMemoryLimit, which has units KBytes.

Warning:: This filter is specialized to volumes. If you are interested in contouring other types of data, use the general vtkContourFilter. If you want to contour an image (i.e., a volume slice), use vtkMarchingSquares.

See also:: vtkContourFilter vtkSliceCubes vtkMarchingSquares vtkSynchronizedTemplates3D

Events:: vtkCommand::StartEvent vtkCommand::EndEvent

Tests:: vtkImageMarchingCubes (Tests)

Definition at line 53 of file vtkImageMarchingCubes.h.


Public Types
typedef vtkPolyDataAlgorithm	Superclass
Public Member Functions
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)
unsigned long int	GetMTime ()
int	GetLocatorPoint (int cellX, int cellY, int edge)
void	AddLocatorPoint (int cellX, int cellY, int edge, int ptId)
void	IncrementLocatorZ ()

void	SetValue (int i, double value)
double	GetValue (int i)
double *	GetValues ()
void	GetValues (double *contourValues)
void	SetNumberOfContours (int number)
int	GetNumberOfContours ()
void	GenerateValues (int numContours, double range[2])
void	GenerateValues (int numContours, double rangeStart, double rangeEnd)

virtual void	SetComputeScalars (int)
virtual int	GetComputeScalars ()
virtual void	ComputeScalarsOn ()
virtual void	ComputeScalarsOff ()

virtual void	SetComputeNormals (int)
virtual int	GetComputeNormals ()
virtual void	ComputeNormalsOn ()
virtual void	ComputeNormalsOff ()

virtual void	SetComputeGradients (int)
virtual int	GetComputeGradients ()
virtual void	ComputeGradientsOn ()
virtual void	ComputeGradientsOff ()

virtual void	SetInputMemoryLimit (int)
virtual int	GetInputMemoryLimit ()
Static Public Member Functions
static vtkImageMarchingCubes *	New ()
static int	IsTypeOf (const char *type)
static vtkImageMarchingCubes *	SafeDownCast (vtkObject *o)
Public Attributes
int	ComputeScalars
int	ComputeNormals
int	ComputeGradients
int	NeedGradients
vtkCellArray *	Triangles
vtkFloatArray *	Scalars
vtkPoints *	Points
vtkFloatArray *	Normals
vtkFloatArray *	Gradients
Protected Member Functions
	vtkImageMarchingCubes ()
	~vtkImageMarchingCubes ()
virtual int	RequestData (vtkInformation , vtkInformationVector , vtkInformationVector )
virtual int	FillInputPortInformation (int port, vtkInformation *info)
void	March (vtkImageData inData, int chunkMin, int chunkMax, int numContours, double values)
void	InitializeLocator (int min0, int max0, int min1, int max1)
void	DeleteLocator ()
int *	GetLocatorPointer (int cellX, int cellY, int edge)
Protected Attributes
int	NumberOfSlicesPerChunk
int	InputMemoryLimit
vtkContourValues *	ContourValues
int *	LocatorPointIds
int	LocatorDimX
int	LocatorDimY
int	LocatorMinX
int	LocatorMinY

Member Typedef Documentation

typedef vtkPolyDataAlgorithm vtkImageMarchingCubes::Superclass

Reimplemented from vtkPolyDataAlgorithm.

Definition at line 57 of file vtkImageMarchingCubes.h.

Constructor & Destructor Documentation

vtkImageMarchingCubes::vtkImageMarchingCubes ( ) [protected]

vtkImageMarchingCubes::~vtkImageMarchingCubes ( ) [protected]

Member Function Documentation

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

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

Reimplemented from vtkPolyDataAlgorithm.

virtual const char* vtkImageMarchingCubes::GetClassName ( ) [virtual]

Reimplemented from vtkPolyDataAlgorithm.

static int vtkImageMarchingCubes::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 vtkPolyDataAlgorithm.

virtual int vtkImageMarchingCubes::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 vtkPolyDataAlgorithm.

static vtkImageMarchingCubes* vtkImageMarchingCubes::SafeDownCast ( vtkObject * o ) [static]

Reimplemented from vtkPolyDataAlgorithm.

void vtkImageMarchingCubes::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 vtkPolyDataAlgorithm.

void vtkImageMarchingCubes::SetValue	(	int	i,
		double	value
	)			`[inline]`

Methods to set contour values

Set a particular contour value at contour number i. The index i ranges between 0<=i<NumberOfContours.

Definition at line 161 of file vtkImageMarchingCubes.h.

double vtkImageMarchingCubes::GetValue ( int i ) [inline]

Get the ith contour value.

Definition at line 167 of file vtkImageMarchingCubes.h.

double * vtkImageMarchingCubes::GetValues ( ) [inline]

Get a pointer to an array of contour values. There will be GetNumberOfContours() values in the list.

Definition at line 174 of file vtkImageMarchingCubes.h.

void vtkImageMarchingCubes::GetValues ( double * contourValues ) [inline]

Fill a supplied list with contour values. There will be GetNumberOfContours() values in the list. Make sure you allocate enough memory to hold the list.

Definition at line 182 of file vtkImageMarchingCubes.h.

void vtkImageMarchingCubes::SetNumberOfContours ( int number ) [inline]

Set the number of contours to place into the list. You only really need to use this method to reduce list size. The method SetValue() will automatically increase list size as needed.

Definition at line 190 of file vtkImageMarchingCubes.h.

int vtkImageMarchingCubes::GetNumberOfContours ( ) [inline]

Get the number of contours in the list of contour values.

Definition at line 196 of file vtkImageMarchingCubes.h.

void vtkImageMarchingCubes::GenerateValues	(	int	numContours,
		double	range[2]
	)			`[inline]`

Generate numContours equally spaced contour values between specified range. Contour values will include min/max range values.

Definition at line 203 of file vtkImageMarchingCubes.h.

void vtkImageMarchingCubes::GenerateValues	(	int	numContours,
		double	rangeStart,
		double	rangeEnd
	)			`[inline]`

Generate numContours equally spaced contour values between specified range. Contour values will include min/max range values.

Definition at line 210 of file vtkImageMarchingCubes.h.

unsigned long int vtkImageMarchingCubes::GetMTime ( ) [virtual]

Because we delegate to vtkContourValues & refer to vtkImplicitFunction

Reimplemented from vtkObject.

virtual void vtkImageMarchingCubes::SetComputeScalars ( int ) [virtual]

Set/Get the computation of scalars.

virtual int vtkImageMarchingCubes::GetComputeScalars ( ) [virtual]

Set/Get the computation of scalars.

virtual void vtkImageMarchingCubes::ComputeScalarsOn ( ) [virtual]

Set/Get the computation of scalars.

virtual void vtkImageMarchingCubes::ComputeScalarsOff ( ) [virtual]

Set/Get the computation of scalars.

virtual void vtkImageMarchingCubes::SetComputeNormals ( int ) [virtual]

Set/Get the computation of normals. Normal computation is fairly expensive in both time and storage. If the output data will be processed by filters that modify topology or geometry, it may be wise to turn Normals and Gradients off.

virtual int vtkImageMarchingCubes::GetComputeNormals ( ) [virtual]

Set/Get the computation of normals. Normal computation is fairly expensive in both time and storage. If the output data will be processed by filters that modify topology or geometry, it may be wise to turn Normals and Gradients off.

virtual void vtkImageMarchingCubes::ComputeNormalsOn ( ) [virtual]

Set/Get the computation of normals. Normal computation is fairly expensive in both time and storage. If the output data will be processed by filters that modify topology or geometry, it may be wise to turn Normals and Gradients off.

virtual void vtkImageMarchingCubes::ComputeNormalsOff ( ) [virtual]

Set/Get the computation of normals. Normal computation is fairly expensive in both time and storage. If the output data will be processed by filters that modify topology or geometry, it may be wise to turn Normals and Gradients off.

virtual void vtkImageMarchingCubes::SetComputeGradients ( int ) [virtual]

Set/Get the computation of gradients. Gradient computation is fairly expensive in both time and storage. Note that if ComputeNormals is on, gradients will have to be calculated, but will not be stored in the output dataset. If the output data will be processed by filters that modify topology or geometry, it may be wise to turn Normals and Gradients off.

virtual int vtkImageMarchingCubes::GetComputeGradients ( ) [virtual]

Set/Get the computation of gradients. Gradient computation is fairly expensive in both time and storage. Note that if ComputeNormals is on, gradients will have to be calculated, but will not be stored in the output dataset. If the output data will be processed by filters that modify topology or geometry, it may be wise to turn Normals and Gradients off.

virtual void vtkImageMarchingCubes::ComputeGradientsOn ( ) [virtual]

Set/Get the computation of gradients. Gradient computation is fairly expensive in both time and storage. Note that if ComputeNormals is on, gradients will have to be calculated, but will not be stored in the output dataset. If the output data will be processed by filters that modify topology or geometry, it may be wise to turn Normals and Gradients off.

virtual void vtkImageMarchingCubes::ComputeGradientsOff ( ) [virtual]

Set/Get the computation of gradients. Gradient computation is fairly expensive in both time and storage. Note that if ComputeNormals is on, gradients will have to be calculated, but will not be stored in the output dataset. If the output data will be processed by filters that modify topology or geometry, it may be wise to turn Normals and Gradients off.

int vtkImageMarchingCubes::GetLocatorPoint	(	int	cellX,
		int	cellY,
		int	edge
	)

void vtkImageMarchingCubes::AddLocatorPoint	(	int	cellX,
		int	cellY,
		int	edge,
		int	ptId
	)

void vtkImageMarchingCubes::IncrementLocatorZ ( )

virtual void vtkImageMarchingCubes::SetInputMemoryLimit ( int ) [virtual]

The InputMemoryLimit determines the chunk size (the number of slices requested at each iteration). The units of this limit is KiloBytes. For now, only the Z axis is split.

virtual int vtkImageMarchingCubes::GetInputMemoryLimit ( ) [virtual]

The InputMemoryLimit determines the chunk size (the number of slices requested at each iteration). The units of this limit is KiloBytes. For now, only the Z axis is split.

virtual int vtkImageMarchingCubes::RequestData	(	vtkInformation *	request,
		vtkInformationVector **	inputVector,
		vtkInformationVector *	outputVector
	)			`[protected, virtual]`

This is called by the superclass. This is the method you should override.

Reimplemented from vtkPolyDataAlgorithm.

virtual int vtkImageMarchingCubes::FillInputPortInformation	(	int	port,
		vtkInformation *	info
	)			`[protected, virtual]`

Fill the input port information objects for this algorithm. This is invoked by the first call to GetInputPortInformation for each port so subclasses can specify what they can handle.

Reimplemented from vtkPolyDataAlgorithm.