iALookupTable Class Reference

Class representing a lookup table for color coding. More...

#include <iALookupTable.h>

Collaboration diagram for iALookupTable:

Public Member Functions
void	allocate (size_t numberOfColors)
	Allocate place for a given number of colors and fill with zeros. More...
void	copyFromVTK (vtkLookupTable *vtk_lut)
	Copies data from the existing VTK lookup table (vtkLookupTable). More...
void	getColor (double val, double *rgba_out) const
	Map a scalar value into an RGBA color. More...
QColor	getQColor (double val) const
	Map a scalar value into an QColor object. More...
const double *	getRange () const
	Get the mapped scalar range. More...
void	getTableValue (size_t index, double *rgba_out) const
	Get the RGBA color value for a given index in the table. More...
	iALookupTable ()
	Set up an empty (uninitialized) iALookupTable. More...
	iALookupTable (vtkLookupTable *vtk_lut)
	Initialize an iALookupTable from the given vtkLookupTable. More...
bool	initialized () const
	Check if the table has data (initialized). More...
size_t	numberOfValues () const
	Get the number of values in the table. More...
void	setColor (size_t colInd, double *rgba)
	Assign an RGBA color (every component 0..1) to a given index in the table. More...
void	setColor (size_t colInd, QColor const &col)
	Assign a color specified by a QColor to a given index in the table. More...
void	setData (size_t numberOfColors, double *rgba_data)
	Fill the lookup table using provided raw RBGA data for a given number of colors. More...
void	setOpacity (double alpha)
	Set a given alpha value for every color in the table. More...
void	setRange (double const *range)
	Set the mapped scalar range. More...
void	setRange (double from_val, double to_val)
	Set the mapped scalar range. More...

Protected Attributes
std::vector< double >	m_data
	lookup table raw color data, each color is 4 doubles (RGBA) More...
bool	m_isInitialized
	flag which is on if lookup table data is set More...
size_t	m_numColors
	number of colors stored in the lookup table More...
double	m_range [2]
	scalar range mapped by the lookup table More...
double	m_rangeLen
	length of the total scalar range that is mapped by the lookup table More...

Detailed Description

Class representing a lookup table for color coding.

Used for example in the scatter plot matrix iAQSplom. Has methods for importing an existing VTK lookup table, and for mapping scalar values to a corresponding QColor.

Constructor & Destructor Documentation

iALookupTable() [1/2]

iALookupTable::iALookupTable

(

)

Set up an empty (uninitialized) iALookupTable.

iALookupTable() [2/2]

iALookupTable::iALookupTable ( vtkLookupTable *  vtk_lut )

explicit

Initialize an iALookupTable from the given vtkLookupTable.

Member Function Documentation

allocate()

void iALookupTable::allocate

(

size_t

numberOfColors

)

Allocate place for a given number of colors and fill with zeros.

copyFromVTK()

void iALookupTable::copyFromVTK

(

vtkLookupTable *

vtk_lut

)

Copies data from the existing VTK lookup table (vtkLookupTable).

getColor()

void iALookupTable::getColor	(	double	val,
		double *	rgba_out
	)		const

Map a scalar value into an RGBA color.

getQColor()

QColor iALookupTable::getQColor

(

double

val

)

const

Map a scalar value into an QColor object.

getRange()

const double * iALookupTable::getRange

(

)

const

Get the mapped scalar range.

getTableValue()

void iALookupTable::getTableValue	(	size_t	index,
		double *	rgba_out
	)		const

Get the RGBA color value for a given index in the table.

initialized()

bool iALookupTable::initialized

(

)

const

Check if the table has data (initialized).

numberOfValues()

size_t iALookupTable::numberOfValues

(

)

const

Get the number of values in the table.

setColor() [1/2]

void iALookupTable::setColor	(	size_t	colInd,
		double *	rgba
	)

Assign an RGBA color (every component 0..1) to a given index in the table.

setColor() [2/2]

void iALookupTable::setColor	(	size_t	colInd,
		QColor const &	col
	)

Assign a color specified by a QColor to a given index in the table.

setData()

void iALookupTable::setData	(	size_t	numberOfColors,
		double *	rgba_data
	)

Fill the lookup table using provided raw RBGA data for a given number of colors.

setOpacity()

void iALookupTable::setOpacity

(

double

alpha

)

Set a given alpha value for every color in the table.

setRange() [1/2]

void iALookupTable::setRange

(

double const *

range

)

Set the mapped scalar range.

setRange() [2/2]

void iALookupTable::setRange	(	double	from_val,
		double	to_val
	)

Set the mapped scalar range.

Member Data Documentation

m_data

std::vector<double> iALookupTable::m_data

protected

lookup table raw color data, each color is 4 doubles (RGBA)

m_isInitialized

bool iALookupTable::m_isInitialized

protected

flag which is on if lookup table data is set

m_numColors

size_t iALookupTable::m_numColors

protected

number of colors stored in the lookup table

m_range

double iALookupTable::m_range[2]

protected

scalar range mapped by the lookup table

m_rangeLen

double iALookupTable::m_rangeLen

protected

length of the total scalar range that is mapped by the lookup table

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

• core/src/iALookupTable.h
• core/src/iALookupTable.cpp