7 #include "ColorConstants.h"
8 #include "ColorFilterStrategyForeground.h"
16 ColorFilterStrategyForeground::~ColorFilterStrategyForeground ()
21 QRgb rgbBackground)
const
23 double distance = qSqrt (pow (
double (pixel.red()) - qRed (rgbBackground), 2) +
24 pow (
double (pixel.green()) - qGreen (rgbBackground), 2) +
25 pow (
double (pixel.blue()) - qBlue (rgbBackground), 2));
26 return distance / qSqrt (255.0 * 255.0 + 255.0 * 255.0 + 255.0 * 255.0);
31 return qFloor (FOREGROUND_MIN + s * (FOREGROUND_MAX - FOREGROUND_MIN));
ColorFilterStrategyForeground()
Single constructor.
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.