Engauge Digitizer  2
ColorFilterStrategySaturation.cpp
1 /******************************************************************************************************
2  * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released *
3  * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
4  * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission. *
5  ******************************************************************************************************/
6 
7 #include "ColorConstants.h"
8 #include "ColorFilterStrategySaturation.h"
9 #include <QColor>
10 #include <qmath.h>
11 
13 {
14 }
15 
16 ColorFilterStrategySaturation::~ColorFilterStrategySaturation ()
17 {
18 }
19 
21  QRgb /* rgbBackground */) const
22 {
23  return pixel.saturationF();
24 }
25 
27 {
28  return SATURATION_MIN + s * (SATURATION_MAX - SATURATION_MIN);
29 }
virtual double pixelToZeroToOne(const QColor &pixel, QRgb rgbBackground) const
Return a normalized value of 0 to 1 given input pixel.
virtual int zeroToOneToValue(double s) const
Return the low value normalized to 0 to 1.