static public Color[] V3(Color[] llist, int ColorsCount)
{
List <RGB> list = new List <RGB>();
foreach (Color item in llist)
{
list.Add(new RGB(item));
}
List <List <Color> > Result = new List <List <Color> >();
List <Color> Part = new List <Color>();
List <RGB> temp = new List <RGB>();
list = ColorPalette.DistrictByHue(list);
list = ColorPalette.DeleteLowSaturated(list);
list.Sort(delegate(RGB left, RGB right)
{ return(right.Hue.CompareTo(left.Hue)); });
int KeyStep = list.Count / ColorsCount;
for (int i = 0; i < ColorsCount; i++)
{
temp = list.GetRange(KeyStep * i, KeyStep);
foreach (RGB item in temp)
{
Part.Add(item.Color);
}
Result.Add(Part.GetRange(0, Part.Count));
Part.Clear();
temp.Clear();
}
int cnt = Result.FindIndex(group => group.Count != 0);
for (int i = 0; i < Result.Count; i++)
{
if (Result[i].Count == 0)
{
Result[i] = Result[cnt];
}
}
return(ColorPalette.GetAverageColors(Result).ToArray());
}
static public Color[] V2(Color[] llist, int ColorsCount)
{
List <RGB> list = new List <RGB>();
foreach (Color item in llist)
{
list.Add(new RGB(item));
}
List <List <Color> > Result = new List <List <Color> >();
List <RGB> Part = new List <RGB>();
int maxLength = 0;
int emptyListCount = 0;
int[] groupLengths = new int[ColorsCount];
list = ColorPalette.DistrictByHue(list);
list = ColorPalette.DeleteLowSaturated(list);
list.Sort(delegate(RGB left, RGB right)
{ return(right.Hue.CompareTo(left.Hue)); });
float lower = (float)list[list.Count - 1].Hue;
float upper = (float)list[0].Hue;
float KeyStep = (upper - lower) / ColorsCount;
upper = KeyStep + lower;
for (int i = 0; i < ColorsCount; i++)
{
if (i == ColorsCount - 1)
{
upper = (float)list[0].Hue;
}
foreach (RGB item in list)
{
if ((float)item.Hue >= (float)lower && (float)item.Hue <= (float)upper)
{
Part.Add(item);
}
}
if (Part.Count > 2)
{
Part = ColorPalette.DistrictByHue(Part, true);
Part.Sort(delegate(RGB left, RGB right)
{ return(left.Brightness.CompareTo(right.Brightness)); });
}
if (maxLength < Part.Count)
{
maxLength = Part.Count;
}
if (Part.Count == 0)
{
emptyListCount += 1;
}
groupLengths[i] = Part.Count;
List <Color> temp = new List <Color>();
foreach (RGB item in Part)
{
temp.Add(item.Color);
}
Result.Add(temp.GetRange(0, temp.Count));
Part.Clear();
lower = lower + KeyStep;
upper = upper + KeyStep;
}
if (emptyListCount != 0)
{
List <Color> maxList = new List <Color>();
List <List <Color> > emptyLists = new List <List <Color> >();
Array.Sort(groupLengths);
maxList = Result.Find(group => group.Count == maxLength);
emptyLists = Result.FindAll(x => x.Count == 0);
int col = maxList.Count / (emptyListCount + 1);
for (int i = 1; i <= emptyLists.Count; i++)
{
emptyLists[i - 1].AddRange(maxList.GetRange(0, col));
maxList.RemoveRange(0, col);
}
}
int cnt = Result.FindIndex(group => group.Count != 0);
for (int i = 0; i < Result.Count; i++)
{
if (Result[i].Count == 0)
{
Result[i] = Result[cnt];
}
}
return(ColorPalette.GetAverageColors(Result).ToArray());
}