VTransferFunction Class Reference

#include <VTransferFunction.h>

List of all members.

Public Member Functions

VTransferFunction ()

~VTransferFunction ()

void draw1d ()

void setHistogram (std::vector< int > *volumeHistogram)

void setZoomPoint (bool zoom_active, float x, bool bigcanvas)

float getAlpha (int index)

void addTransferFunctionPoint (int density, vTransferFunctionPoint newPoint)

int transferFunctionPointInRange (int selectedDensity, float alpha, int range)

vTransferFunctionPoint getTransferFunctionPoint (int density)

void removeTransferFunctionPoint (int density)

std::vector
< vTransferFunctionPoint > getFullTransferFunction ()

unsigned int getGLHandle ()

void setMainCanvas (QVolRendCanvas *maincanvas)

void setMaxHist (float val)

bool load (std::string filename)

bool save (std::string filename)

void clear ()

Private Member Functions

void generateDisplayList ()

void generateDisplayList2D ()

void interpolateTransferPoints ()

double round (double Zahl, int Stellen)

Private Attributes

std::map< int,
vTransferFunctionPoint > m_FuncControlPoints

std::vector
< vTransferFunctionPoint > m_TransferFunction

std::vector< int > * m_VolumeHistogram

unsigned int m_VolumeHistogramDisplayList

unsigned int m_TransferFunctionHandle

bool m_hasChanged

QVolRendCanvas * m_MainCanvas

float m_maxdensity

VFramebufferObject * m_FramebufferObject

float zoom_ptx

bool m_zoom_active

bool bigzoom

Detailed Description

class representing a Transferfunction. includes Histogram

Definition at line 32 of file VTransferFunction.h.

Constructor & Destructor Documentation

VTransferFunction::VTransferFunction ( ) [inline]

default constructor

Definition at line 39 of file VTransferFunction.h.

VTransferFunction::~VTransferFunction ( )

default destructor

Definition at line 6 of file VTransferFunction.cpp.

References m_FuncControlPoints, m_MainCanvas, m_TransferFunction, m_VolumeHistogram, and m_VolumeHistogramDisplayList.

Member Function Documentation

void VTransferFunction::draw1d ( )

draws the Transferfunction

Definition at line 28 of file VTransferFunction.cpp.

References bigzoom, QVolRendCanvas::getLoaded(), m_FuncControlPoints, m_MainCanvas, m_VolumeHistogram, m_VolumeHistogramDisplayList, m_zoom_active, and zoom_ptx.

Referenced by QTFCanvas::paintGL().

void VTransferFunction::setHistogram ( std::vector< int > * volumeHistogram ) [inline]

sets the current Histogram

Parameters:

volumeHistogram

Histogram of current loaded Volume

Definition at line 63 of file VTransferFunction.h.

References clear(), generateDisplayList(), and m_VolumeHistogram.

Referenced by QTFCanvas::setHistogram().

void VTransferFunction::setZoomPoint	(	bool	zoom_active,
		float	x,
		bool	bigcanvas
	)			`[inline]`

sets the Point where the TF should be zoomed to

Parameters:

	zoom_active	if zoom is active
	x	zoom point
	bigcanvas	if the bigcanvas is shown

Definition at line 76 of file VTransferFunction.h.

References bigzoom, m_zoom_active, and zoom_ptx.

Referenced by QTFCanvas::mouseMoveEvent(), and QTFCanvas::mouseReleaseEvent().

float VTransferFunction::getAlpha ( int index ) [inline]

gets the alpha Value of a Point with a given density

Parameters:

index

equals the density of the point

Returns:: float containing the alpha value

Definition at line 89 of file VTransferFunction.h.

References m_FuncControlPoints.

Referenced by QTFCanvas::mouseDoubleClickEvent().

void VTransferFunction::addTransferFunctionPoint	(	int	density,
		vTransferFunctionPoint	newPoint
	)

adds a Point to the current Transferfunction

Parameters:

	density	densitiy value of new Point
	newPoint	Values of the new Point

Definition at line 137 of file VTransferFunction.cpp.

References m_FuncControlPoints, and m_hasChanged.

Referenced by QTFCanvas::mouseClickEvent(), QTFCanvas::mouseDoubleClickEvent(), and QTFCanvas::mouseMoveEvent().

int VTransferFunction::transferFunctionPointInRange	(	int	selectedDensity,
		float	alpha,
		int	range
	)			`[inline]`

checks if a current transferFunctionPoint is already set in the specified range

Parameters:

	selectedDensity	of selection in range [0,4095]
	alpha	Alpha Value of Point
	range	around the given density where it should be looked for a point

Returns:: integer containing the density, -1 if no point found

Definition at line 109 of file VTransferFunction.h.

References m_FuncControlPoints.

Referenced by QTFCanvas::mouseClickEvent(), QTFCanvas::mouseDoubleClickEvent(), and QTFCanvas::mouseMoveEvent().

vTransferFunctionPoint VTransferFunction::getTransferFunctionPoint ( int density ) [inline]

returns the Point at a given Density

Returns:: VTransferFunctionPoint

Definition at line 169 of file VTransferFunction.h.

References m_FuncControlPoints.

Referenced by QTFCanvas::mouseMoveEvent().

void VTransferFunction::removeTransferFunctionPoint ( int density )

removes the Transferfunction point with the given density

Parameters:

density

of Point to remove

Definition at line 146 of file VTransferFunction.cpp.

References m_FuncControlPoints, and m_hasChanged.

Referenced by QTFCanvas::mouseDoubleClickEvent(), and QTFCanvas::mouseMoveEvent().

std::vector<vTransferFunctionPoint> VTransferFunction::getFullTransferFunction ( ) [inline]

computes and returns the full TransferFunction

Returns:: vector containing the full TransferFunction

Definition at line 184 of file VTransferFunction.h.

References interpolateTransferPoints(), m_hasChanged, and m_TransferFunction.

unsigned int VTransferFunction::getGLHandle ( ) [inline]

gets the OpenGL Handle of the transferfunction

Returns:: unsigned int containing the handle

Definition at line 197 of file VTransferFunction.h.

References VFramebufferObject::getTextureHandle(), interpolateTransferPoints(), m_FramebufferObject, and m_hasChanged.

Referenced by QVolRendCanvas::paintGL().

void VTransferFunction::setMainCanvas ( QVolRendCanvas * maincanvas ) [inline]

sets the Main Canvas, used for switching to the right context

Parameters:

maincanvas

the Pointer to the Main Canvas

Definition at line 211 of file VTransferFunction.h.

References m_MainCanvas.

Referenced by QVolRendCanvas::setTransferFunctionPtr().

void VTransferFunction::setMaxHist ( float val ) [inline]

sets the maximum density of the histogram

Parameters:

val

maximum value

Definition at line 220 of file VTransferFunction.h.

References m_maxdensity.

Referenced by QVolRendCanvas::load_data().

bool VTransferFunction::load ( std::string filename )

loads a tf from the disc

Parameters:

filename

name of File

Definition at line 231 of file VTransferFunction.cpp.

References vTransferFunctionPoint::m_Alpha, vTransferFunctionPoint::m_Color, m_FuncControlPoints, and m_hasChanged.

Referenced by QTFCanvas::loadTf().

bool VTransferFunction::save ( std::string filename )

saves a tf from the disc

Parameters:

filename

name of File

Definition at line 271 of file VTransferFunction.cpp.

References m_FuncControlPoints.

Referenced by QTFCanvas::saveTf().

void VTransferFunction::clear ( ) [inline]

resets the tf

Definition at line 240 of file VTransferFunction.h.

References m_FuncControlPoints, m_hasChanged, m_TransferFunction, and m_TransferFunctionHandle.

Referenced by setHistogram().

void VTransferFunction::generateDisplayList ( ) [private]

generates the DisplayList

Definition at line 155 of file VTransferFunction.cpp.

References m_maxdensity, m_VolumeHistogram, and m_VolumeHistogramDisplayList.

Referenced by setHistogram().

void VTransferFunction::generateDisplayList2D ( ) [private]

void VTransferFunction::interpolateTransferPoints ( ) [private]

interpolates the Transferfunction Points

Definition at line 181 of file VTransferFunction.cpp.

References VFramebufferObject::bind(), VFramebufferObject::getFboHandle(), VFramebufferObject::init(), m_FramebufferObject, m_FuncControlPoints, m_hasChanged, and VFramebufferObject::unbind().

Referenced by getFullTransferFunction(), and getGLHandle().

double VTransferFunction::round	(	double	Zahl,
		int	Stellen
	)			`[inline, private]`

method for rounding a double to certain steps

Parameters:

	Zahl	the value to round
	Stellen	numbers behind the coma

Returns:: double containing the rounded value

Definition at line 267 of file VTransferFunction.h.

Member Data Documentation

std::map<int, vTransferFunctionPoint> VTransferFunction::m_FuncControlPoints [private]

Control Points of the Transferfunction.

Definition at line 273 of file VTransferFunction.h.

Referenced by addTransferFunctionPoint(), clear(), draw1d(), getAlpha(), getTransferFunctionPoint(), interpolateTransferPoints(), load(), removeTransferFunctionPoint(), save(), transferFunctionPointInRange(), and ~VTransferFunction().

std::vector<vTransferFunctionPoint> VTransferFunction::m_TransferFunction [private]

All computed Values of the Transferfunction.

Definition at line 274 of file VTransferFunction.h.

Referenced by clear(), getFullTransferFunction(), and ~VTransferFunction().

std::vector<int>* VTransferFunction::m_VolumeHistogram [private]

Histogram of Volume.

Definition at line 275 of file VTransferFunction.h.

Referenced by draw1d(), generateDisplayList(), setHistogram(), and ~VTransferFunction().

unsigned int VTransferFunction::m_VolumeHistogramDisplayList [private]

Handle for OpenGl DisplayList used when drawing the Histogram.

Definition at line 276 of file VTransferFunction.h.

Referenced by draw1d(), generateDisplayList(), and ~VTransferFunction().

unsigned int VTransferFunction::m_TransferFunctionHandle [private]

Handle to Texture where Transferfunction is Stored.

Definition at line 278 of file VTransferFunction.h.

Referenced by clear().

bool VTransferFunction::m_hasChanged [private]

If Transferfunction has changed since last Render to texture.

Definition at line 280 of file VTransferFunction.h.

Referenced by addTransferFunctionPoint(), clear(), getFullTransferFunction(), getGLHandle(), interpolateTransferPoints(), load(), and removeTransferFunctionPoint().

QVolRendCanvas* VTransferFunction::m_MainCanvas [private]

Pointer to Main Canvas.

Definition at line 281 of file VTransferFunction.h.

Referenced by draw1d(), setMainCanvas(), and ~VTransferFunction().

float VTransferFunction::m_maxdensity [private]

MaximumDensity of the Histogram.

Definition at line 282 of file VTransferFunction.h.

Referenced by generateDisplayList(), and setMaxHist().

VFramebufferObject* VTransferFunction::m_FramebufferObject [private]

FBO where tf is stored.

Definition at line 284 of file VTransferFunction.h.

Referenced by getGLHandle(), and interpolateTransferPoints().

float VTransferFunction::zoom_ptx [private]

Value where the zoom is applied.

Definition at line 286 of file VTransferFunction.h.

Referenced by draw1d(), and setZoomPoint().

bool VTransferFunction::m_zoom_active [private]

If Zoom is active.

Definition at line 287 of file VTransferFunction.h.

Referenced by draw1d(), and setZoomPoint().

bool VTransferFunction::bigzoom [private]

If Zoom is bigzoom.

Definition at line 288 of file VTransferFunction.h.

Referenced by draw1d(), and setZoomPoint().

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

Eigene Dateien/Vis/src/VTransferFunction.h
Eigene Dateien/Vis/src/VTransferFunction.cpp

Generated on Wed Dec 5 05:15:10 2007 for VolRendering by

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