private void UpdateSelector()
{
double x = this.X;
double y = this.Y;
if (!double.IsNaN(x) && !double.IsNaN(y))
{
CIEXYZColour xyz = (CIEXYZColour) new CIEXYYColor(x, y, 0.5);
this.selector.Margin = new Thickness(
cieplot.Margin.Left + x * cieplot.ActualWidth - this.selector.ActualWidth / 2,
cieplot.Margin.Top + (1.0 - y) * cieplot.ActualHeight - this.selector.ActualHeight / 2,
0, 0);
this.selector.Fill = new SolidColorBrush(xyz.ToRGB(cieplot.cieRgbDefinition, limitGamut: false));
}
}
protected virtual RGBStruct ColourFunction(double x, double y)
{
CIEXYYColor xyy = new CIEXYYColor(x, y, 1.0);
CIEXYZColour xyz = (CIEXYZColour)xyy;
RGBColor rgb = xyz.ToRGB(cieRgbDefinition, false);
if (rgb.OutOfGamut)
{
return(new RGBStruct(rgb.Rb, rgb.Gb, rgb.Bb, 128)); // Values are clamped automatically
}
else
{
return(new RGBStruct(rgb.Rb, rgb.Gb, rgb.Bb, 255));
}
}