public Color GetColor(PredefinedColor color, LuminosityLevel luminosity = LuminosityLevel.Unspecified)
{
if (color == PredefinedColor.Random)
{
return(GetColor(RandomWithin(0, 359)));
}
var bounds = color == PredefinedColor.Monochrome ? s_Monochrome : s_ColorPalette[color];
return(GetColor(luminosity, bounds));
}
private ReadOnlySpan<LuminosityLevel> ComputeRelativeLuminosityLevels
(
ReadOnlySpan<double> neighbourDifferences
)
{
var darks = new List<double>();
var lights = new List<double>();
foreach (var difference in neighbourDifferences)
{
if (difference >= -this.NoiseCutoff && difference <= this.NoiseCutoff)
{
// This difference is considered a samey value.
continue;
}
if (difference < this.NoiseCutoff)
{
darks.Add(difference);
continue;
}
if (difference > this.NoiseCutoff)
{
lights.Add(difference);
}
}
var muchDarkerCutoff = darks.Count > 0 ? darks.Median() : -this.NoiseCutoff;
var muchLighterCutoff = lights.Count > 0 ? lights.Median() : this.NoiseCutoff;
Span<LuminosityLevel> luminosityLevels = new LuminosityLevel[neighbourDifferences.Length];
for (var i = 0; i < neighbourDifferences.Length; i++)
{
var difference = neighbourDifferences[i];
if (difference >= -this.NoiseCutoff && difference <= this.NoiseCutoff)
{
luminosityLevels[i] = LuminosityLevel.Same;
continue;
}
if (difference < 0.0)
{
luminosityLevels[i] = difference < muchDarkerCutoff ? LuminosityLevel.MuchDarker : LuminosityLevel.Darker;
continue;
}
luminosityLevels[i] = difference > muchLighterCutoff ? LuminosityLevel.MuchLighter : LuminosityLevel.Lighter;
}
return luminosityLevels;
}
private Color GetColor(LuminosityLevel luminosity, ColorBounds bounds)
{
// Pick Hue
var hue = PickHue(bounds.HueRange);
// Pick Saturation
var saturation = PickSaturation(bounds.SaturationRange, luminosity);
// Pick Brightness based on Saturation
var brightness = PickBrightness(bounds.BrightnessCurve, saturation, bounds.SaturationRange, luminosity);
// Convert to Color object
return(HSBtoColor(hue, saturation, brightness));
}
public Color GetColor(int hue, LuminosityLevel luminosity = LuminosityLevel.Unspecified)
{
var h = hue % 360;
foreach (var v in s_ColorPalette.Values)
{
if (v.HueRange.Min <= h && h <= v.HueRange.Max)
{
return(GetColor(luminosity, v));
}
}
return(GetColor(luminosity, s_ColorPalette[PredefinedColor.Red]));
}
int PickSaturation(Range range, LuminosityLevel luminosity)
{
if (range == null)
{
return(0);
}
switch (luminosity)
{
case LuminosityLevel.Random:
return(RandomWithin(0, 100));
case LuminosityLevel.Bright:
return(RandomWithin(55, range.Max));
case LuminosityLevel.Dark:
return(RandomWithin(range.Max - 10, range.Max));
case LuminosityLevel.Light:
return(RandomWithin(range.Min, 55));
}
return(RandomWithin(range));
}
int PickBrightness(AnimationCurve brightnessCurve, int saturation, Range saturationRange, LuminosityLevel luminosity)
{
if (luminosity == LuminosityLevel.Random)
{
return(RandomWithin(0, 100));
}
var t = saturationRange == null ? 0 : Mathf.InverseLerp(saturationRange.Min, saturationRange.Max, saturation);
var brightness = (int)brightnessCurve.Evaluate(t);
switch (luminosity)
{
case LuminosityLevel.Dark:
return(RandomWithin(brightness, brightness + 20));
case LuminosityLevel.Light:
return(RandomWithin((brightness + 100) / 2, 100));
}
return(RandomWithin(brightness, 100));
}
