#include <vtkImageDataLIC2D.h>

Inheritance diagram for vtkImageDataLIC2D:

Collaboration diagram for vtkImageDataLIC2D:

Public Types
typedef vtkImageAlgorithm	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkImageDataLIC2D *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent)
void	TranslateInputExtent (const int inExt, const int inWholeExtent, int *outExt)

int	SetContext (vtkRenderWindow *context)
vtkRenderWindow *	GetContext ()

virtual void	SetSteps (int)
virtual int	GetSteps ()

virtual void	SetStepSize (double)
virtual double	GetStepSize ()

virtual void	SetMagnification (int)
virtual int	GetMagnification ()

virtual int	GetOpenGLExtensionsSupported ()
Static Public Member Functions
static vtkImageDataLIC2D *	New ()
static int	IsTypeOf (const char *type)
static vtkImageDataLIC2D *	SafeDownCast (vtkObjectBase *o)
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkImageDataLIC2D ()
	~vtkImageDataLIC2D ()
virtual int	RequestInformation (vtkInformation , vtkInformationVector , vtkInformationVector )
int	RequestUpdateExtent (vtkInformation vtkNotUsed(request), vtkInformationVector inputVector, vtkInformationVector vtkNotUsed(outputVector))

virtual int	FillInputPortInformation (int port, vtkInformation *info)

virtual int	RequestData (vtkInformation request, vtkInformationVector inputVector, vtkInformationVector outputVector)
Protected Attributes
vtkWeakPointer< vtkRenderWindow >	Context
bool	OwnWindow
int	OpenGLExtensionsSupported
vtkShaderProgram2 *	MagShader
vtkImageNoiseSource *	NoiseSource
int	Steps
double	StepSize
int	Magnification

Detailed Description

GPU implementation of a Line Integral Convolution, a technique for imaging vector fields.

The input on port 0 is an vtkImageData with extents of a 2D image. It needs a vector field on point data. This filter only works on point vectors. One can use a vtkCellDataToPointData filter to convert cell vectors to point vectors.

Port 1 is a special port for customized noise input. It is an optional port. If noise input is not specified, then the filter using vtkImageNoiseSource to generate a 128x128 noise texture.

See also:: vtkSurfaceLICPainter vtkLineIntegralConvolution2D

Tests:: vtkImageDataLIC2D (Tests)

Definition at line 48 of file vtkImageDataLIC2D.h.

Member Typedef Documentation

typedef vtkImageAlgorithm vtkImageDataLIC2D::Superclass

Reimplemented from vtkImageAlgorithm.

Definition at line 52 of file vtkImageDataLIC2D.h.

Constructor & Destructor Documentation

vtkImageDataLIC2D::vtkImageDataLIC2D ( ) [protected]

vtkImageDataLIC2D::~vtkImageDataLIC2D ( ) [protected]

Member Function Documentation

static vtkImageDataLIC2D* vtkImageDataLIC2D::New ( ) [static]

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

Reimplemented from vtkAlgorithm.

static int vtkImageDataLIC2D::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 vtkImageAlgorithm.

virtual int vtkImageDataLIC2D::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 vtkImageAlgorithm.

static vtkImageDataLIC2D* vtkImageDataLIC2D::SafeDownCast ( vtkObjectBase * o ) [static]

Reimplemented from vtkImageAlgorithm.

virtual vtkObjectBase* vtkImageDataLIC2D::NewInstanceInternal ( ) const [protected, virtual]

Reimplemented from vtkImageAlgorithm.

vtkImageDataLIC2D* vtkImageDataLIC2D::NewInstance ( ) const

Reimplemented from vtkImageAlgorithm.

void vtkImageDataLIC2D::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 vtkImageAlgorithm.

int vtkImageDataLIC2D::SetContext ( vtkRenderWindow * context )

Get/Set the context. Context must be a vtkOpenGLRenderWindow. This does not increase the reference count of the context to avoid reference loops. SetContext() may raise an error is the OpenGL context does not support the required OpenGL extensions. Return 0 upon failure and 1 upon success.

vtkRenderWindow* vtkImageDataLIC2D::GetContext ( )

Get/Set the context. Context must be a vtkOpenGLRenderWindow. This does not increase the reference count of the context to avoid reference loops. SetContext() may raise an error is the OpenGL context does not support the required OpenGL extensions. Return 0 upon failure and 1 upon success.

virtual void vtkImageDataLIC2D::SetSteps ( int ) [virtual]

Number of steps. Initial value is 20. class invariant: Steps>0. In term of visual quality, the greater the better.

virtual int vtkImageDataLIC2D::GetSteps ( ) [virtual]

Number of steps. Initial value is 20. class invariant: Steps>0. In term of visual quality, the greater the better.

virtual void vtkImageDataLIC2D::SetStepSize ( double ) [virtual]

Step size. Specify the step size as a unit of the cell length of the input vector field. Cell lengthh is the length of the diagonal of a cell. Initial value is 1.0. class invariant: StepSize>0.0. In term of visual quality, the smaller the better. The type for the interface is double as VTK interface is double but GPU only supports float. This value will be converted to float in the execution of the algorithm.

virtual double vtkImageDataLIC2D::GetStepSize ( ) [virtual]

Step size. Specify the step size as a unit of the cell length of the input vector field. Cell lengthh is the length of the diagonal of a cell. Initial value is 1.0. class invariant: StepSize>0.0. In term of visual quality, the smaller the better. The type for the interface is double as VTK interface is double but GPU only supports float. This value will be converted to float in the execution of the algorithm.

virtual void vtkImageDataLIC2D::SetMagnification ( int ) [virtual]

The the magnification factor. Default is 1

virtual int vtkImageDataLIC2D::GetMagnification ( ) [virtual]

The the magnification factor. Default is 1

virtual int vtkImageDataLIC2D::GetOpenGLExtensionsSupported ( ) [virtual]

Check if the required OpenGL extensions / GPU are supported.

void vtkImageDataLIC2D::TranslateInputExtent	(	const int *	inExt,
		const int *	inWholeExtent,
		int *	outExt
	)

virtual int vtkImageDataLIC2D::RequestInformation	(	vtkInformation *	request,
		vtkInformationVector **	inputVector,
		vtkInformationVector *	outputVector
	)		`[protected, virtual]`

Subclasses can reimplement this method to collect information from their inputs and set information for their outputs.

Reimplemented from vtkImageAlgorithm.

virtual int vtkImageDataLIC2D::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. Redefined from the superclass.

Reimplemented from vtkImageAlgorithm.

int vtkImageDataLIC2D::RequestUpdateExtent	(	vtkInformation *	vtkNotUsedrequest,
		vtkInformationVector **	inputVector,
		vtkInformationVector *	vtkNotUsedoutputVector
	)		`[protected]`

virtual int vtkImageDataLIC2D::RequestData	(	vtkInformation *	request,
		vtkInformationVector **	inputVector,
		vtkInformationVector *	outputVector
	)		`[protected, virtual]`