TFWidget Class Reference

#include <TFWidget.h>

List of all members.

Signals
void	functionChanged (float *data)
Public Member Functions
	TFWidget (QWidget *parent=0)
	Initializes TFWidget.
int	angle () const
void	addMode ()
	Sets mode to true so that vertex-add-mode is activated.
void	delMode ()
	Sets mode to false so that vertex-delete-mode is activated.
void	resetTF ()
	Resets all parameters in TFWidget to initial values.
void	save (QFile *file)
	Saves the current transfer function to a file.
void	load (QFile *file)
	Loads a transfer function file.
Public Attributes
QPoint	posi
Protected Member Functions
void	paintEvent (QPaintEvent *event)
	Paints a visualization of interpolated vertex colors.
void	mousePressEvent (QMouseEvent *event)
	Checks if the click area contains an existing vertex and stores the index of this vertex in poly.
void	mouseReleaseEvent (QMouseEvent *event)
	Draws or deletes vertices according to mode. Edits vertex colors in case of right click.
void	createClickArea (int x, int y)
	Creates polygon around click position with specified size (areaSize).
void	prepareTF ()
	Transforms the transfer function into a float array that can be directly used for generating the transfer function texture.
Private Attributes
int	currentAngle
int	currentAngley
QPolygon	poly
QPolygon	tempPoly
QSize	size
bool	drawn
bool	vertexSelected
QPoint	selectedVertex
QPolygon	clickArea
int	selectedIndex
int	areaSize
int	areaHeight
int	areaWidth
int	xcoord
int	ycoord
bool	mode
bool	dataSet
QVector< QColor >	vertexColors
QVector< QLine >	histoLines
float	data [4096 *3]
QMap< int, QVector< int > >	tf

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Constructor & Destructor Documentation

TFWidget::TFWidget

(

QWidget *

parent = 0

)

Initializes TFWidget.

Sets initial polyline at left and right border with black and white as vertex colors.

---

Member Function Documentation

void TFWidget::addMode

(

)

Sets mode to true so that vertex-add-mode is activated.

int TFWidget::angle

(

)

const [inline]

void TFWidget::createClickArea	(	int	x,
		int	y
	)			[protected]

Creates polygon around click position with specified size (areaSize).

Parameters:

	x	x-pos around which area is created.
	y	y-pos around which area is created.

void TFWidget::delMode

(

)

Sets mode to false so that vertex-delete-mode is activated.

void TFWidget::functionChanged

(

float *

data

)

[signal]

void TFWidget::load

(

QFile *

file

)

Loads a transfer function file.

Parameters:

file

Receives a pointer to a QFile.

A stream on the QFile is opened and loaded onto the QMap tf which stores all the data of the transfer function: vertex positions and their color values. This data is then restored to QPolygon poly and QVector <QColor> vertexColors. Finally the TFWidget gets updated to paint the loaded transfer function.

void TFWidget::mousePressEvent

(

QMouseEvent *

event

)

[protected]

Checks if the click area contains an existing vertex and stores the index of this vertex in poly.

Parameters:

event

contains information about mousePressEvent.

void TFWidget::mouseReleaseEvent

(

QMouseEvent *

event

)

[protected]

Draws or deletes vertices according to mode. Edits vertex colors in case of right click.

Parameters:

event

contains information about mouseReleaseEvent.

If mousePressEvent recognized an existing vertex at click position and the right mouse button was released a QColorDialog is opened and the chosen color replaces the old vertex color. Otherwise a new vertex is inserted at the specified position into the QPolygon poly if vertex-add-mode is active or an existing vertex is removed from poly if delete-mode is active.

void TFWidget::paintEvent

(

QPaintEvent *

event

)

[protected]

Paints a visualization of interpolated vertex colors.

void TFWidget::prepareTF

(

)

[protected]

Transforms the transfer function into a float array that can be directly used for generating the transfer function texture.

The values between vertices are interpolated and saved to an array that is returned to volGLWidget.

void TFWidget::resetTF

(

)

Resets all parameters in TFWidget to initial values.

void TFWidget::save

(

QFile *

file

)

Saves the current transfer function to a file.

Parameters:

file

points to a QFile object

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Member Data Documentation

int TFWidget::areaHeight [private]

int TFWidget::areaSize [private]

int TFWidget::areaWidth [private]

QPolygon TFWidget::clickArea [private]

int TFWidget::currentAngle [private]

int TFWidget::currentAngley [private]

float TFWidget::data[4096 *3] [private]

bool TFWidget::dataSet [private]

bool TFWidget::drawn [private]

QVector<QLine> TFWidget::histoLines [private]

bool TFWidget::mode [private]

QPolygon TFWidget::poly [private]

QPoint TFWidget::posi

int TFWidget::selectedIndex [private]

QPoint TFWidget::selectedVertex [private]

QSize TFWidget::size [private]

QPolygon TFWidget::tempPoly [private]

QMap<int, QVector <int> > TFWidget::tf [private]

QVector<QColor> TFWidget::vertexColors [private]

bool TFWidget::vertexSelected [private]

int TFWidget::xcoord [private]

int TFWidget::ycoord [private]

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

• Desktop/Visualisuerung/Bsp2/FlowVisFramework/header/TFWidget.h
• Desktop/Visualisuerung/Bsp2/FlowVisFramework/header/moc_TFWidget.cpp
• Desktop/Visualisuerung/Bsp2/FlowVisFramework/src/TFWidget.cpp