QwtSaturationValueColorMap Class Reference

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

#include <qwt_color_map.h>

Inheritance diagram for QwtSaturationValueColorMap:

Classes
class	PrivateData

Public Member Functions
	QwtSaturationValueColorMap ()
	Constructor.
virtual	~QwtSaturationValueColorMap ()
	Destructor.
void	setHue (int hue)
	Set the 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 the alpha coordinate.
int	hue () const
int	saturation1 () const
int	saturation2 () const
int	value1 () const
int	value2 () const
int	alpha () const
virtual QRgb	rgb (const QwtInterval &, double value) const QWT_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, const QwtInterval &interval, double value) const
	Map a value of a given interval into a color index.
QColor	color (const QwtInterval &, double value) const
	Map a value into a color.
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 259.

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

setHueInterval(), setSaturation(), setValue(), setValue()

Member Function Documentation

alpha()

int QwtSaturationValueColorMap::alpha

(

)

const

Returns

Alpha coordinate

See also

setAlpha()

hue()

int QwtSaturationValueColorMap::hue

(

)

const

Returns

Hue coordinate

See also

setHue()

rgb()

QRgb QwtSaturationValueColorMap::rgb ( const QwtInterval &  interval, double  value  ) const

virtual

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

Parameters

interval	Range for all values
value	Value to map into a RGB value

Returns

RGB value for value

Implements QwtColorMap.

saturation1()

int QwtSaturationValueColorMap::saturation1

(

)

const

Returns

First saturation coordinate

See also

setSaturationInterval()

saturation2()

int QwtSaturationValueColorMap::saturation2

(

)

const

Returns

Second saturation coordinate

See also

setSaturationInterval()

setAlpha()

void QwtSaturationValueColorMap::setAlpha

(

int

alpha

)

Set the the alpha coordinate.

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

Parameters

alpha

Alpha coordinate

See also

alpha()

setHue()

void QwtSaturationValueColorMap::setHue

(

int

hue

)

Set the the hue coordinate.

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

Parameters

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

saturation1	First saturation
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

value1	First value
value2	Second value

See also

value1(), value2(), setSaturationInterval()

value1()

int QwtSaturationValueColorMap::value1

(

)

const

Returns

First value coordinate

See also

setValueInterval()

value2()

int QwtSaturationValueColorMap::value2

(

)

const

Returns

Second value coordinate

See also

setValueInterval()

---

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

• /home/runner/work/QWT/QWT/src/qwt_color_map.h
• /home/runner/work/QWT/QWT/src/qwt_color_map.cpp