QwtSaturat...ueColorMap(3)

📦

version 6.3.0 · 2 versions

6.3.0 · alpine 3.24 (latest)
6.2.0 · epel 10, fedora 43, fedora 44

💅 QwtSaturationValueColorMap — like, the whole page, bestie

okay so real quick: this is page QwtSaturat...ueColorMap(3) from the Library Functions Manual, and it's all about the iconic QwtSaturationValueColorMap class. buckle up, we're going in 🎀

✨ NAME ✨

QwtSaturationValueColorMap — bestie, this class varies the saturation and/or the value for a given hue in the HSV color model. that's the whole vibe. 🌈

🌸 SYNOPSIS 🌸

#include <qwt_color_map.h>

it Inherits QwtColorMap, periodt. 👑

💖 Public Member Functions

QwtSaturationValueColorMap() — the Constructor, aka where it all begins ✨
virtual ~QwtSaturationValueColorMap() — the Destructor, we say bye 👋
void setHue(int hue) — sets the the hue coordinate (yes, "the the," the original said it, we love a legend 💀)
void setSaturationInterval(int sat1, int sat2) — sets the interval for the saturation coordinate 🎨
void setValueInterval(int value1, int value2) — sets the interval for the value coordinate ⭐
void setAlpha(int alpha) — sets the the alpha coordinate, transparency era 🫶
int hue() const — reads back the hue
int saturation1() const — first saturation, get it
int saturation2() const — second saturation, get it again
int value1() const — first value
int value2() const — second value
int alpha() const — the alpha, she's back
virtual QRgb rgb(const QwtInterval &, double value) const override — the main character function, maps ur stuff to an RGB 💅

🦋 Public Member Functions inherited from QwtColorMap

QwtColorMap(Format=QwtColorMap::RGB) — constructor with a default, slay
virtual ~QwtColorMap() — Destructor, again, bye
void setFormat(Format) — sets the format
virtual uint colorIndex(int numColors, const QwtInterval &interval, double value) const — maps a value of a given interval into a color index 🔢
QColor color(const QwtInterval &, double value) const — gives u a QColor
virtual QVector< QRgb > colorTable(int numColors) const — the color table, numColors of them
virtual QVector< QRgb > colorTable256() const — the color table, but make it 256 ✨

🧚 Additional Inherited Members

Public Types inherited from QwtColorMap:

enum Format { RGB, Indexed } — two formats, that's the whole menu 🍓

Public Attributes inherited from QwtColorMap:

Format const — a const Format attribute, she's not changing for anyone

👑 Detailed Description 👑

QwtSaturationValueColorMap varies the saturation and/or the value for a given hue in the HSV color model. literally its whole job and it ate. 💖

Value and saturation are in the range of 0 to 255 while hue is in the range of 0 to 259. (yes, we're quoting the original here, no cap — that's what it says 🫶)

See also: QwtHueColorMap — go look at her too, she's gorgeous 🌸

Definition at line 214 of file qwt_color_map.h.

🎀 Constructor & Destructor Documentation 🎀

`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. that's the default vibe check, and it passed ✅

See also: setHueInterval(), setSaturation(), setValue(), setValue()

Definition at line 972 of file qwt_color_map.cpp.

`QwtSaturationValueColorMap::~QwtSaturationValueColorMap() [virtual]`

Destructor. she's done, she's logging off 💅

Definition at line 978 of file qwt_color_map.cpp.

💜 Member Function Documentation 💜

`int QwtSaturationValueColorMap::alpha() const`

Returns: Alpha coordinate 🫶

See also: setAlpha()

Definition at line 1127 of file qwt_color_map.cpp.

`int QwtSaturationValueColorMap::hue() const`

Returns: Hue coordinate 🌈

See also: setHue()

Definition at line 1082 of file qwt_color_map.cpp.

`QRgb QwtSaturationValueColorMap::rgb(const QwtInterval & interval, double value) const [override], [virtual]`

Map a value of a given interval into a RGB value. this is the glow-up function ✨

Parameters:

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

Returns: RGB value for value 🎨

Implements QwtColorMap.

Definition at line 1140 of file qwt_color_map.cpp.

`int QwtSaturationValueColorMap::saturation1() const`

Returns: First saturation coordinate 🍓

See also: setSaturationInterval()

Definition at line 1091 of file qwt_color_map.cpp.

`int QwtSaturationValueColorMap::saturation2() const`

Returns: Second saturation coordinate 🍓

See also: setSaturationInterval()

Definition at line 1100 of file qwt_color_map.cpp.

`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. ghost mode vs. fully booked, iykyk 👻

Parameters:

alpha — Alpha coordinate

See also: alpha()

Definition at line 1067 of file qwt_color_map.cpp.

`void QwtSaturationValueColorMap::setHue(int hue)`

Set the the hue coordinate. Hue coordinates outside 0 to 359 will be interpreted as hue % 360.. (two dots, that's how the page says it, don't come for me 😭)

Parameters:

hue — Hue coordinate

See also: hue()

Definition at line 992 of file qwt_color_map.cpp.

`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. so if they're twins, the saturation just sits there being cute and the value does all the work 💅

saturation1/saturation2 need to be in the range 0 to 255.

Parameters:

saturation1 — First saturation
saturation2 — Second saturation

See also: saturation1(), saturation2(), setValueInterval()

Definition at line 1016 of file qwt_color_map.cpp.

`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. same twin energy, except now saturation's the one carrying the team 🧚

value1/value2 need to be in the range 0 to 255.

Parameters:

value1 — First value
value2 — Second value

See also: value1(), value2(), setSaturationInterval()

Definition at line 1043 of file qwt_color_map.cpp.

`int QwtSaturationValueColorMap::value1() const`

Returns: First value coordinate ⭐

See also: setValueInterval()

Definition at line 1109 of file qwt_color_map.cpp.

`int QwtSaturationValueColorMap::value2() const`

Returns: Second value coordinate ⭐

See also: setValueInterval()

Definition at line 1118 of file qwt_color_map.cpp.

🌟 Author 🌟

Generated automatically by Doxygen for Qwt User's Guide from the source code. yup, a robot wrote it, and honestly? she understood the assignment 🤖💖

that's the whole page bestie, no skips, no cuts, every single line number accounted for 🫶✨ this was Qwt User's Guide, and the page was dated QwtSaturat...ueColorMap(3) — ok bye, go build something gorgeous with it 💅🎀

📦 where this page comes from

alpine 3.24: qwt-doc 6.3.0-r0 · custom
💖 girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on 2026-11-04: a language model's rewrite of the original, under its terms