FlowWidget Class Reference

OpenGL Widget which renders Glyphs or Streamlines (evenly spaced) of a 2D Flow Dataset. (depending on the render mode). More...

#include <FlowWidget.h>

List of all members.

Public Slots

void IdleFunc ()

Called whenever nothing else has to be done. Responsible for updating and rendering.

void takeScreenshot ()

Stores a Screenshot of the current Frame of the rendering widget in a file.

void setGlyphSpacing (int val)

Sets the spacing between the Glyphs.

void setGlyphSize (int val)

Sets the size of the Glyphs.

void setGlyphAlpha (int val)

Sets the transparency of the Glyphs.

void setCurrentChannelTexture (int val)

Sets the texture handle of the texture which will then be the active Channel Texture.

void setGlyphActive (int val)

Activates or deactivates Glyph Rendering.

void setDataChannelActive (int val)

Activates or deactivates Data Channel Rendering.

void setGlyphColorCoding (int val)

Activates or deactivates color coding of the Glyphs.

void setGlyphScaling (int val)

Activates or deactivates Glyph Scaling.

void setEulerRendering ()

Activates Euler Integration mode in the streamlines calculation.

void setRK2Rendering ()

Activates Runge-Kutta Integration mode in the streamlines calculation.

void setEulerRK2Rendering ()

Activates Euler and Runge-Kutta Integration mode in the streamlines calculation.

void clearStreamlines ()

Clears all calculated streamlines.

void setEulerStepSize (double val)

Sets the step size for Euler Integration Mode.

void setRK2StepSize (double val)

Sets the step size for Runge-Kutta Integration Mode.

void setDSep (int val)

Sets the minimal distance for planting new streamline seed points.

void setDTest (int val)

Sets the percentage of DSep as minimal distance until a streamline calculation will be stopped.

void setStepSize (int val)

Sets the step size for the evenly spaced streamlines calculation.

void calculateStreamlines ()

Initiates the calculation of evenly spaced streamlines.

Public Member Functions

FlowWidget (QWidget *parent=0, const QGLWidget *shareWidget=0, Qt::WindowFlags f=0)

Constructor of FlowWidget Class.

QSize minimumSizeHint () const

Returns the minimum Size of the Widget.

QSize sizeHint () const

Returns the Size of the Widget.

void setFlow (FlowData *flow)

Sets the Flow Dataset which will be rendered.

void loadTextures ()

Loads the Flow Dataset in multiple Textures on the graphic hardware. The first Texture contain the triple (X,Y,Length) of the Vector Data as RGB Values. Additionally for all other Channels of the Flow Dataset an intensity texture is generated for each Channel.

unsigned int getTexture ()

Returns the Texture Handle of the Flow Vector Data Texture.

unsigned int * getTextureP ()

Returns a Pointer to the Texture Handle of the Flow Vector Data Texture.

const int GetNextPowerOfTwo (const int iNumber)

Calculates the next power of 2.

void uploadTransferTexture (float *tex)

Loads the Transfer Texture (set by the Transfer Texture Widget) to the graphic hardware.

bool isDatasetLoaded ()

Query to the Flow Widget if currently a Flow Dataset is loaded.

QStringList & getChannelNames ()

Returns the Channel Names of the loaded Flow Dataset.

Protected Member Functions

void initializeGL ()

Initializes the OpenGL Context.

void paintGL ()

This method covers the OpenGL render loop.

void resizeGL (int width, int height)

Updates the Viewport and Projection if the widged is resized.

Detailed Description

OpenGL Widget which renders Glyphs or Streamlines (evenly spaced) of a 2D Flow Dataset. (depending on the render mode).

See also:: QGLWidget

Constructor & Destructor Documentation

FlowWidget::FlowWidget	(	QWidget *	parent = `0`,
		const QGLWidget *	shareWidget = `0`,
		Qt::WindowFlags	f = `0`
	)

Constructor of FlowWidget Class.

Parameters:

	parent	Pointer to parent Widget
	shareWidget	Pointer to GLWidget which shares Textures and DisplayLists with this GLWidget.
	f	Qt::WindowFlags

See also:: QGLWidget

Member Function Documentation

QStringList & FlowWidget::getChannelNames ( )

Returns the Channel Names of the loaded Flow Dataset.

Returns:: QStringList containing the Channel Names.

const int FlowWidget::GetNextPowerOfTwo ( const int iNumber )

Calculates the next power of 2.

Parameters:

iNumber

Int value of which the next power of 2 will be calculated.

Returns:: The next power of 2.

unsigned int FlowWidget::getTexture ( )

Returns the Texture Handle of the Flow Vector Data Texture.

Returns:: The Texture Handle

unsigned int * FlowWidget::getTextureP ( )

Returns a Pointer to the Texture Handle of the Flow Vector Data Texture.

Returns:: Pointer to the Texture Handle

bool FlowWidget::isDatasetLoaded ( )

Query to the Flow Widget if currently a Flow Dataset is loaded.

Returns:: TRUE if an Flow Dataset is loaded.

QSize FlowWidget::minimumSizeHint ( ) const

Returns the minimum Size of the Widget.

Returns:: Minimum Size of the Widget.

void FlowWidget::setCurrentChannelTexture ( int val ) [slot]

Sets the texture handle of the texture which will then be the active Channel Texture.

Parameters:

val

Texture handle

void FlowWidget::setDataChannelActive ( int val ) [slot]

Activates or deactivates Data Channel Rendering.

Parameters:

val

Qt::Checked or Qt::Unchecked

void FlowWidget::setDSep ( int val ) [slot]

Sets the minimal distance for planting new streamline seed points.

Parameters:

val

Minimal seedpoint distance

void FlowWidget::setDTest ( int val ) [slot]

Sets the percentage of DSep as minimal distance until a streamline calculation will be stopped.

Parameters:

val

Minimal streamline distance.

void FlowWidget::setEulerStepSize ( double val ) [slot]

Sets the step size for Euler Integration Mode.

Parameters:

val

The step size

void FlowWidget::setFlow ( FlowData * flow )

Sets the Flow Dataset which will be rendered.

Parameters:

flow

The Flow Dataset

void FlowWidget::setGlyphActive ( int val ) [slot]

Activates or deactivates Glyph Rendering.

Parameters:

val

Qt::Checked or Qt::Unchecked

void FlowWidget::setGlyphAlpha ( int val ) [slot]

Sets the transparency of the Glyphs.

Parameters:

val

Transparency value (100 to 0)

void FlowWidget::setGlyphColorCoding ( int val ) [slot]

Activates or deactivates color coding of the Glyphs.

Parameters:

val

Qt::Checked or Qt::Unchecked

void FlowWidget::setGlyphScaling ( int val ) [slot]

Activates or deactivates Glyph Scaling.

Parameters:

val

Qt::Checked or Qt::Unchecked

void FlowWidget::setGlyphSize ( int val ) [slot]

Sets the size of the Glyphs.

Parameters:

val

Glyph size

void FlowWidget::setGlyphSpacing ( int val ) [slot]

Sets the spacing between the Glyphs.

Parameters:

val

Spacing between the Glyphs

void FlowWidget::setRK2StepSize ( double val ) [slot]

Sets the step size for Runge-Kutta Integration Mode.

Parameters:

val

The step size

void FlowWidget::setStepSize ( int val ) [slot]

Sets the step size for the evenly spaced streamlines calculation.

Parameters:

val

The step size

QSize FlowWidget::sizeHint ( ) const

Returns the Size of the Widget.

Returns:: Size of the Widget.

void FlowWidget::uploadTransferTexture ( float * tex )

Loads the Transfer Texture (set by the Transfer Texture Widget) to the graphic hardware.

Parameters:

tex

Pointer to Transfer Texture float array.

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

D:/TU/2008WS/VisualisierungLU/Beispiel2/VisLu_bsp2/code/header/FlowWidget.h
D:/TU/2008WS/VisualisierungLU/Beispiel2/VisLu_bsp2/code/src/FlowWidget.cpp


Public Slots
void	IdleFunc ()
	Called whenever nothing else has to be done. Responsible for updating and rendering.
void	takeScreenshot ()
	Stores a Screenshot of the current Frame of the rendering widget in a file.
void	setGlyphSpacing (int val)
	Sets the spacing between the Glyphs.
void	setGlyphSize (int val)
	Sets the size of the Glyphs.
void	setGlyphAlpha (int val)
	Sets the transparency of the Glyphs.
void	setCurrentChannelTexture (int val)
	Sets the texture handle of the texture which will then be the active Channel Texture.
void	setGlyphActive (int val)
	Activates or deactivates Glyph Rendering.
void	setDataChannelActive (int val)
	Activates or deactivates Data Channel Rendering.
void	setGlyphColorCoding (int val)
	Activates or deactivates color coding of the Glyphs.
void	setGlyphScaling (int val)
	Activates or deactivates Glyph Scaling.
void	setEulerRendering ()
	Activates Euler Integration mode in the streamlines calculation.
void	setRK2Rendering ()
	Activates Runge-Kutta Integration mode in the streamlines calculation.
void	setEulerRK2Rendering ()
	Activates Euler and Runge-Kutta Integration mode in the streamlines calculation.
void	clearStreamlines ()
	Clears all calculated streamlines.
void	setEulerStepSize (double val)
	Sets the step size for Euler Integration Mode.
void	setRK2StepSize (double val)
	Sets the step size for Runge-Kutta Integration Mode.
void	setDSep (int val)
	Sets the minimal distance for planting new streamline seed points.
void	setDTest (int val)
	Sets the percentage of DSep as minimal distance until a streamline calculation will be stopped.
void	setStepSize (int val)
	Sets the step size for the evenly spaced streamlines calculation.
void	calculateStreamlines ()
	Initiates the calculation of evenly spaced streamlines.
Public Member Functions
	FlowWidget (QWidget parent=0, const QGLWidget shareWidget=0, Qt::WindowFlags f=0)
	Constructor of FlowWidget Class.
QSize	minimumSizeHint () const
	Returns the minimum Size of the Widget.
QSize	sizeHint () const
	Returns the Size of the Widget.
void	setFlow (FlowData *flow)
	Sets the Flow Dataset which will be rendered.
void	loadTextures ()
	Loads the Flow Dataset in multiple Textures on the graphic hardware. The first Texture contain the triple (X,Y,Length) of the Vector Data as RGB Values. Additionally for all other Channels of the Flow Dataset an intensity texture is generated for each Channel.
unsigned int	getTexture ()
	Returns the Texture Handle of the Flow Vector Data Texture.
unsigned int *	getTextureP ()
	Returns a Pointer to the Texture Handle of the Flow Vector Data Texture.
const int	GetNextPowerOfTwo (const int iNumber)
	Calculates the next power of 2.
void	uploadTransferTexture (float *tex)
	Loads the Transfer Texture (set by the Transfer Texture Widget) to the graphic hardware.
bool	isDatasetLoaded ()
	Query to the Flow Widget if currently a Flow Dataset is loaded.
QStringList &	getChannelNames ()
	Returns the Channel Names of the loaded Flow Dataset.
Protected Member Functions
void	initializeGL ()
	Initializes the OpenGL Context.
void	paintGL ()
	This method covers the OpenGL render loop.
void	resizeGL (int width, int height)
	Updates the Viewport and Projection if the widged is resized.