QwtSaturationValueColorMap Class Reference

QwtSaturationValueColorMap varies the saturation and/or value for a given hue in the HSV color model. More...

#include <qwt_colormap.h>

Inheritance diagram for QwtSaturationValueColorMap:

Classes
class	PrivateData

Public Member Functions
	QwtSaturationValueColorMap ()
	Constructor.
void	setHue (int hue)
	Set the hue coordinate.
void	setSaturationInterval (int sat1, int sat2)
	Set the interval for the saturation coordinate.
void	setValueInterval (int value1, int value2)
	Set the interval for the value coordinate.
void	setAlpha (int alpha)
	Set the alpha coordinate.
int	hue () const
	Return hue coordinate.
int	saturation1 () const
	Return first saturation coordinate.
int	saturation2 () const
	Return second saturation coordinate.
int	value1 () const
	Return first value coordinate.
int	value2 () const
	Return second value coordinate.
int	alpha () const
	Return alpha coordinate.
virtual QRgb	rgb (double vMin, double vMax, double value) const override
	Map a value of a given interval into a RGB value.
Public Member Functions inherited from QwtColorMap
	QwtColorMap (Format=QwtColorMap::RGB)
	Constructor.
virtual	~QwtColorMap ()
	Destructor.
void	setFormat (Format)
	Set the format of the color map.
Format	format () const
virtual uint	colorIndex (int numColors, double vMin, double vMax, double value) const
	Map a value of a given interval into a color index.
QColor	color (double vMin, double vMax, double value) const
virtual QVector< QRgb >	colorTable (int numColors) const
	Build and return a color map of arbitrary number of colors.
virtual QVector< QRgb >	colorTable256 () const
	Build and return a color map of 256 colors.

Additional Inherited Members
Public Types inherited from QwtColorMap
enum	Format { RGB , Indexed }
	Format for color mapping. More...

Detailed Description

QwtSaturationValueColorMap varies the saturation and/or value for a given hue in the HSV color model.

Value and saturation are in the range of 0 to 255 while hue is in the range of 0 to 359.

See also

QwtHueColorMap

Constructor & Destructor Documentation

QwtSaturationValueColorMap()

QwtSaturationValueColorMap::QwtSaturationValueColorMap

(

)

Constructor.

The value interval is initialized by 0 to 255, saturation by 255 to 255. Hue to 0 and alpha to 255. So the default setting interpolates the value coordinate only.

See also

setHue(), setSaturationInterval(), setValueInterval(), setAlpha()

Member Function Documentation

alpha()

int QwtSaturationValueColorMap::alpha

(

)

const

Return alpha coordinate.

Returns

Alpha coordinate.

See also

setAlpha()

hue()

int QwtSaturationValueColorMap::hue

(

)

const

Return hue coordinate.

Returns

Hue coordinate.

See also

setHue()

rgb()

QRgb QwtSaturationValueColorMap::rgb ( double  vMin, double  vMax, double  value  ) const

overridevirtual

Map a value of a given interval into a RGB value.

Parameters

[in]	vMin	Minimum of the value interval.
[in]	vMax	Maximum of the value interval.
[in]	value	Value to map into a RGB value.

Returns

RGB value for value.

Implements QwtColorMap.

saturation1()

int QwtSaturationValueColorMap::saturation1

(

)

const

Return first saturation coordinate.

Returns

First saturation coordinate.

See also

setSaturationInterval()

saturation2()

int QwtSaturationValueColorMap::saturation2

(

)

const

Return second saturation coordinate.

Returns

Second saturation coordinate.

See also

setSaturationInterval()

setAlpha()

void QwtSaturationValueColorMap::setAlpha

(

int

alpha

)

Set the alpha coordinate.

alpha needs to be in the range 0 to 255, where 255 means opaque and 0 means transparent.

Parameters

[in]

alpha

Alpha coordinate.

See also

alpha()

setHue()

void QwtSaturationValueColorMap::setHue

(

int

hue

)

Set the hue coordinate.

Hue coordinates outside 0 to 359 will be interpreted as hue % 360.

Parameters

[in]

hue

Hue coordinate.

See also

hue()

setSaturationInterval()

void QwtSaturationValueColorMap::setSaturationInterval	(	int	saturation1,
		int	saturation2
	)

Set the interval for the saturation coordinate.

When saturation1 == saturation2 the map interpolates between the value coordinates only. saturation1/saturation2 need to be in the range 0 to 255.

Parameters

[in]	saturation1	First saturation.
[in]	saturation2	Second saturation.

See also

saturation1(), saturation2(), setValueInterval()

setValueInterval()

void QwtSaturationValueColorMap::setValueInterval	(	int	value1,
		int	value2
	)

Set the interval for the value coordinate.

When value1 == value2 the map interpolates between the saturation coordinates only. value1/value2 need to be in the range 0 to 255.

Parameters

[in]	value1	First value.
[in]	value2	Second value.

See also

value1(), value2(), setSaturationInterval()

value1()

int QwtSaturationValueColorMap::value1

(

)

const

Return first value coordinate.

Returns

First value coordinate.

See also

setValueInterval()

value2()

int QwtSaturationValueColorMap::value2

(

)

const

Return second value coordinate.

Returns

Second value coordinate.

See also

setValueInterval()

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

• /home/runner/work/QWT/QWT/src/core/qwt_colormap.h
• /home/runner/work/QWT/QWT/src/core/qwt_colormap.cpp