TransferFunc Class Reference

#include <TransferFunc.h>

List of all members.

Public Member Functions
	TransferFunc (const float _x, const float _y, const float _width, const float _height, const int _numberBars, Volume *_volume, ColorChooser *_chooserColor, Shaders *_shader)
	~TransferFunc ()
void	setPointList (TfpList *_pointList)
TfpList *	getListPoints ()
void	render ()
bool	isTFClicked (const float xWorld, const float yWorld)
void	handleClick (const int button, const int state, const float xWorld, const float yWorld)
void	updateTFTextureData ()
Protected Member Functions
void	initHistogram ()
void	drawHistogram ()
void	drawTfpPolynom ()
void	drawTfPoint (TfPoint *prePoint, TfPoint *point)
void	drawDensityDistribution ()

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Detailed Description

The TransferFunction class

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Constructor & Destructor Documentation

TransferFunc::TransferFunc	(	const float	_x,
		const float	_y,
		const float	_width,
		const float	_height,
		const int	_numberBars,
		Volume *	_volume,
		ColorChooser *	_chooserColor,
		Shaders *	_shader
	)

Construct a new Transferfunction object

Parameters:

	_x	X-coordinate of the bottom left corner of the transfer function
	_y	Y-coordinate of the bottom left corner of the transfer function
	_width	Width of the transfer function
	_height	Height of the transfer function
	_numberBars	Number of bars that are used for drawing the visualisation of the densitiy function
	_volume	Pointer to the volume
	_chooserColor	Pointer to the colour chooser
	_shader	Pointer to the shader

TransferFunc::~TransferFunc

(

)

Destroy the object

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Member Function Documentation

void TransferFunc::drawDensityDistribution

(

)

[protected]

Draw the density distribution

void TransferFunc::drawHistogram

(

)

[protected]

Draw the histogram

void TransferFunc::drawTfPoint	(	TfPoint *	prePoint,
		TfPoint *	point
	)			[protected]

Draw a TfPoint and the background between the current and the last point, if the current point is not the head of the whole list

Parameters:

	prePoint	The predecessor of the current point
	point	The current processed point in the transfer point list

void TransferFunc::drawTfpPolynom

(

)

[protected]

Draw the Transfer Point polygon, that is the transfer point list connected by lines and shaded with the different colors of the points

TfpList * TransferFunc::getListPoints

(

)

Return a pointer to the transfer point list

Returns:

Pointer to the transfer point list

void TransferFunc::handleClick	(	const int	button,
		const int	state,
		const float	xWorld,
		const float	yWorld
	)

Handle clicks in the transfer function

Parameters:

	button	Value indicating which button was pressed on the mouse
	state	Value indicating if button was pressed or released
	xWorld	X-coordinate of the click relative to the bottom left corner of the viewport
	yWorld	Y-coordinate of the click relative to the bottom left corner of the viewport

void TransferFunc::initHistogram

(

)

[protected]

Initialize the histogram

bool TransferFunc::isTFClicked	(	const float	xWorld,
		const float	yWorld
	)

Return a boolean value indicating whether the current click was into the transferfunction or not

Parameters:

	xWorld	X-coordinate of the click relative to the bottom left corner of the viewport
	yWorld	Y-coordinate of the click relative to the bottom left corner of the viewport

Returns:

boolean Value indicating whether the current click was into the transfer function or not

void TransferFunc::render

(

)

Render the transfer function

void TransferFunc::setPointList

(

TfpList *

_pointList

)

Set the pointer to the transfer point list

Parameters:

_pointList

The pointer to the transfer point list

void TransferFunc::updateTFTextureData

(

)

Update the 1D transfer function texture according to the values currently set in the transfer function

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

• D:/C++/Visualisierung/vislab/src/TransferFunc.h
• D:/C++/Visualisierung/vislab/src/TransferFunc.cpp