QwtHueColorMap - Man Page
QwtHueColorMap varies the hue value of the HSV color model.
Synopsis
#include <qwt_color_map.h>
Inherits QwtColorMap.
Public Member Functions
QwtHueColorMap (QwtColorMap::Format=QwtColorMap::RGB)
Constructor.
virtual ~QwtHueColorMap ()
Destructor.
void setHueInterval (int hue1, int hue2)
void setSaturation (int saturation)
Set the the saturation coordinate.
void setValue (int value)
Set the the value coordinate.
void setAlpha (int alpha)
Set the the alpha coordinate.
int hue1 () const
int hue2 () const
int saturation () const
int value () const
int alpha () const
virtual QRgb rgb (const QwtInterval &, double value) const override
Additional Inherited Members
Detailed Description
QwtHueColorMap varies the hue value of the HSV color model.
QwtHueColorMap can be used to set up a color map easily, that runs cyclic over all colors. Each cycle has 360 different steps.
The values for value and saturation are in the range of 0 to 255 and doesn't depend on the data value to be mapped.
- See also
QwtSaturationValueColorMap
Definition at line 180 of file qwt_color_map.h.
Constructor & Destructor Documentation
QwtHueColorMap::QwtHueColorMap (QwtColorMap::Format format = QwtColorMap::RGB) [explicit]
Constructor. The hue interval is initialized by 0 to 359. All other coordinates are set to 255.
- Parameters
format Format of the color map
- See also
setHueInterval(), setSaturation(), setValue(), setValue()
Definition at line 723 of file qwt_color_map.cpp.
Member Function Documentation
int QwtHueColorMap::alpha () const
- Returns
Alpha coordinate
- See also
setAlpha()
Definition at line 856 of file qwt_color_map.cpp.
int QwtHueColorMap::hue1 () const
- Returns
First hue coordinate
- See also
setHueInterval()
Definition at line 820 of file qwt_color_map.cpp.
int QwtHueColorMap::hue2 () const
- Returns
Second hue coordinate
- See also
setHueInterval()
Definition at line 829 of file qwt_color_map.cpp.
QRgb QwtHueColorMap::rgb (const QwtInterval & interval, double value) const [override], [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.
Definition at line 869 of file qwt_color_map.cpp.
int QwtHueColorMap::saturation () const
- Returns
Saturation coordinate
- See also
setSaturation()
Definition at line 838 of file qwt_color_map.cpp.
void QwtHueColorMap::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()
Definition at line 805 of file qwt_color_map.cpp.
void QwtHueColorMap::setHueInterval (int hue1, int hue2)
Set the interval for the hue coordinate
hue1/hue2 need to be positive number and can be > 360 to define cycles. F.e. 420 to 240 defines a map yellow/red/magenta/blue.
- Parameters
hue1 First hue coordinate
hue2 Second hue coordinate- See also
hue1(), hue2()
Definition at line 746 of file qwt_color_map.cpp.
void QwtHueColorMap::setSaturation (int saturation)
Set the the saturation coordinate. saturation needs to be in the range 0 to 255,
- Parameters
saturation Saturation coordinate
- See also
saturation()
Definition at line 764 of file qwt_color_map.cpp.
void QwtHueColorMap::setValue (int value)
Set the the value coordinate. value needs to be in the range 0 to 255,
- Parameters
value Value coordinate
- See also
value()
Definition at line 784 of file qwt_color_map.cpp.
int QwtHueColorMap::value () const
- Returns
Value coordinate
- See also
setValue()
Definition at line 847 of file qwt_color_map.cpp.
Author
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