public IList<PatternStart> RandomizeColoring()
{
//original color
Dictionary<PatternStart, IList<Color>> startToColor = new Dictionary<PatternStart, IList<Color>>();
//keep track of the active patterns. Will contain new color
List<PatternStart> active = new List<PatternStart>();
foreach (var start in _patternStarts)
{
IList<Color> colors = EffectsToColors(start.SampleEffect.ColorEffects);
startToColor[start] = colors;
OrderedSet<Color> distinct = new OrderedSet<Color>();
distinct.AddAll(colors);
IDictionary<Color, Color> oldToNew = OldToNew(startToColor, active);
Color randBase = distinct.FirstOrDefault(oldToNew.ContainsKey);
IList<Color> newColors = randBase == default(Color)
? ColorPicker.PickColors(distinct.Count)
: ColorPicker.PickColors(randBase, distinct.Count);
IEnumerator<Color> newEnum = newColors.GetEnumerator();
IEnumerator<Color> oldEnum = distinct.GetEnumerator();
while(oldEnum.MoveNext())
{
newEnum.MoveNext();
if (!oldToNew.ContainsKey(oldEnum.Current))
{
oldToNew[oldEnum.Current] = newEnum.Current;
}
}
start.ApplyColors(colors.Select(c=>oldToNew[c]).ToList());
active.RemoveAll(s => s.EndTime <= start.StartTime);
active.Add(start);
}
return _patternStarts;
}
