bool DeltaRGB::contains(const CColor &c1, const CColor &c2) const {
double rdiff = fabs(c1.getRed()-c2.getRed());
double gdiff = fabs(c1.getGreen()-c2.getGreen());
double bdiff = fabs(c1.getBlue()-c2.getBlue());
if (rdiff <= delta_red && gdiff <= delta_green && bdiff <= delta_blue)
return true;
return false;
}
CColor CColor::modulate ( const CColor& color ) const
{
unsigned char R = static_cast<unsigned char> ( getRed() * color.getRed() / 255 );
unsigned char G = static_cast<unsigned char> ( getGreen() * color.getGreen() / 255 );
unsigned char B = static_cast<unsigned char> ( getBlue() * color.getBlue() / 255 );
unsigned char A = static_cast<unsigned char> ( getAlpha() * color.getAlpha() / 255 );
return CColor ( R , G , B , A );
}
CColor CColor::operator - ( const CColor& color ) const
{
int R = getRed() - color.getRed();
int G = getGreen() - color.getGreen();
int B = getBlue() - color.getBlue();
int A = getAlpha() - color.getAlpha();
CColor newc;
newc.setInt ( R , G , B , A );
return newc;
}
double L2dist2(const CColor &c1, const CColor &c2) {
double dr = c1.getRed() - c2.getRed();
double dg = c1.getGreen() - c2.getGreen();
double db = c1.getBlue() - c2.getBlue();
return dr*dr + dg*dg + db*db;
}
double L1dist(const CColor &c1, const CColor &c2) {
return ((fabs(c1.getRed() - c2.getRed()) +
fabs(c1.getGreen() - c2.getGreen()) +
fabs(c1.getBlue() - c2.getBlue()))/3.0);
}