vtkImageDataLIC2D Class Reference

#include <vtkImageDataLIC2D.h>

Inheritance diagram for vtkImageDataLIC2D:

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Collaboration diagram for vtkImageDataLIC2D:

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List of all members.


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. Port 1 is a special port for customized noise input. It is an optional port. If not present, noise is generated by the filter. Even if none-power-of-two texture are supported, giving a power-of-two image may result in faster execution on the GPU. If noise input is not specified, then the filter using vtkImageNoiseSource to generate a 128x128 noise texture. This filter only works on point vectors. One can use a vtkCellDataToPointData filter to convert cell vectors to point vectors.

Required OpenGL Extensins:
GL_ARB_texture_non_power_of_two GL_VERSION_2_0 GL_ARB_texture_float GL_ARB_draw_buffers GL_EXT_framebuffer_object GL_ARB_pixel_buffer_object
See also:
vtkImageAlgorithm vtkImageNoiseSource

Definition at line 53 of file vtkImageDataLIC2D.h.


Public Types

typedef vtkImageAlgorithm Superclass

Public Member Functions

virtual const char * GetClassName ()
virtual int IsA (const char *type)
void PrintSelf (ostream &os, vtkIndent indent)
int GetFBOSuccess ()
int GetLICSuccess ()
void TranslateInputExtent (const int *inExt, const int *inWholeExtent, int *outExt)
int SetContext (vtkRenderWindow *context)
vtkRenderWindowGetContext ()
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 vtkImageDataLIC2DNew ()
static int IsTypeOf (const char *type)
static vtkImageDataLIC2DSafeDownCast (vtkObject *o)

Protected Member Functions

 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

int Steps
double StepSize
int Magnification
int OpenGLExtensionsSupported
vtkWeakPointer< vtkRenderWindowContext
vtkImageNoiseSourceNoiseSource
bool ARBColorBufferFloatSupported
bool OwnWindow
int FBOSuccess
int LICSuccess

Member Typedef Documentation

Reimplemented from vtkImageAlgorithm.

Definition at line 57 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.

virtual const char* vtkImageDataLIC2D::GetClassName (  )  [virtual]

Reimplemented from vtkImageAlgorithm.

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 ( vtkObject o  )  [static]

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 lenghth 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 lenghth 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.

int vtkImageDataLIC2D::GetFBOSuccess (  )  [inline]

Check if FBO is started properly.

Definition at line 100 of file vtkImageDataLIC2D.h.

int vtkImageDataLIC2D::GetLICSuccess (  )  [inline]

Check if LIC runs properly.

Definition at line 103 of file vtkImageDataLIC2D.h.

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

virtual int vtkImageDataLIC2D::RequestInformation ( vtkInformation ,
vtkInformationVector **  ,
vtkInformationVector  
) [protected, virtual]

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]

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

Reimplemented from vtkImageAlgorithm.


Member Data Documentation

int vtkImageDataLIC2D::Steps [protected]

Definition at line 138 of file vtkImageDataLIC2D.h.

double vtkImageDataLIC2D::StepSize [protected]

Definition at line 139 of file vtkImageDataLIC2D.h.

Definition at line 140 of file vtkImageDataLIC2D.h.

Definition at line 141 of file vtkImageDataLIC2D.h.

Definition at line 142 of file vtkImageDataLIC2D.h.

Definition at line 143 of file vtkImageDataLIC2D.h.

Definition at line 145 of file vtkImageDataLIC2D.h.

bool vtkImageDataLIC2D::OwnWindow [protected]

Definition at line 146 of file vtkImageDataLIC2D.h.

Definition at line 147 of file vtkImageDataLIC2D.h.

Definition at line 148 of file vtkImageDataLIC2D.h.


The documentation for this class was generated from the following file:

Generated on Mon Sep 27 18:27:58 2010 for VTK by  doxygen 1.5.6