Yavg = Math.exp(Yavg) - DELTA;
double Ymid = 1.03 - 2.0 / (2.0 + Math.log10(Yavg + 1.0));
white = new CIExyY(1.0 / 3.0, 1.0 / 3.0, Yavg / Ymid);
double ySliderValue = Math.log(white.Y()) / Math.log(2.0);
suspendChangeEvents = true;
whiteLuminanceSlider.setValue(ySliderValue);
whiteXChromaticitySlider.setValue(MAX_CHROMATICITY_SLIDER_VALUE / 3);
whiteYChromaticitySlider.setValue(MAX_CHROMATICITY_SLIDER_VALUE / 3);