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[] V1(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.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;
}
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);
if (emptyListCount != 0 && maxLength > 1)
{
for (int i = 0; i < emptyLists.Count; i++)
{
int col = 0;
int LargestPartIndex = 0;
Array.Sort(groupLengths);
maxLength = groupLengths[groupLengths.Length - 1];
LargestPartIndex = Result.FindIndex(group => group.Count == maxLength);
col = Result[LargestPartIndex].Count / 2;
emptyLists[i].AddRange(Result[LargestPartIndex].GetRange(0, col));
Result[LargestPartIndex].RemoveRange(0, col);
groupLengths[groupLengths.Length - 1] = groupLengths[groupLengths.Length - 1] / 2;
}
int cnt = 0;
for (int i = 0; i < Result.Count; i++)
{
if (Result[i].Count == 0)
{
Result[i] = emptyLists[cnt];
cnt += 1;
}
}
}
int index = Result.FindIndex(group => group.Count != 0);
for (int i = 0; i < Result.Count; i++)
{
if (Result[i].Count == 0)
{
Result[i] = Result[index];
}
}
return(ColorPalette.GetAverageColors(Result).ToArray());
}
static public Color[] V44(Color[] llist, int ColorsCount)
{
List <RGB> RGB_AllColors = new List <RGB>();
for (int i = 0; i < llist.Length; i++)
{
RGB_AllColors.Add(new RGB(llist[i], K_means.AllWeights[i]));
}
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];
RGB_AllColors.Sort(delegate(RGB left, RGB right)
{ return(right.Hue.CompareTo(left.Hue)); });
for (int i = 0; i < ColorsCount; i++)
{
float currentHueValue = 0f;
if (i < 3)
{
foreach (RGB item in RGB_AllColors)
{
// элементы на границах попадают в обе группы
currentHueValue = item.Hue;
if ((float)currentHueValue >= (float)(120f * (float)i) && (float)currentHueValue <= (float)(120f * (float)(i + 1)))
{
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)); });
}
List <Color> temp = new List <Color>();
foreach (RGB item in Part)
{
for (int f = 0; f < item.Weight; f++)
{
temp.Add(item.Color);
}
}
if (maxLength < temp.Count)
{
maxLength = temp.Count;
}
if (temp.Count == 0)
{
emptyListCount += 1;
}
groupLengths[i] = temp.Count;
Result.Add(temp.GetRange(0, temp.Count));
Part.Clear();
}
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);
if (emptyListCount != 0 && maxLength > 1)
{
for (int i = 0; i < emptyLists.Count; i++)
{
int col = 0;
int LargestPartIndex = 0;
Array.Sort(groupLengths);
maxLength = groupLengths[groupLengths.Length - 1];
LargestPartIndex = Result.FindIndex(group => group.Count == maxLength);
col = Result[LargestPartIndex].Count / 2;
emptyLists[i].AddRange(Result[LargestPartIndex].GetRange(0, col));
Result[LargestPartIndex].RemoveRange(0, col);
groupLengths[groupLengths.Length - 1] = groupLengths[groupLengths.Length - 1] / 2;
}
int cnt = 0;
for (int i = 0; i < Result.Count; i++)
{
if (Result[i].Count == 0)
{
Result[i] = emptyLists[cnt];
cnt += 1;
}
}
}
for (int i = 0; i < Result.Count; i++)
{
if (Result[i].Count == 0)
{
Result[i].Add(maxList[0]);
}
}
return(ColorPalette.GetAverageColors(Result).ToArray());
}
static public Color[] V5(Color[] llist, int ColorsCount)
{
List <RGB> RGB_AllColors = new List <RGB>();
foreach (Color item in llist)
{
RGB_AllColors.Add(new RGB(item));
}
List <List <Color> > Result = new List <List <Color> >();
List <RGB> Part = new List <RGB>();
int maxLength = 0;
int emptyListCount = 0;
RGB_AllColors.Sort(delegate(RGB left, RGB right)
{ return(right.Hue.CompareTo(left.Hue)); });
for (int i = 0; i < ColorsCount; i++)
{
if (i < 3)
{
foreach (RGB item in RGB_AllColors)
{
if ((float)item.Hue >= (float)(120f * (float)i) && (float)item.Hue <= (float)(120f * (float)(i + 1)))
{
Part.Add(item);
}
}
}
if (Part.Count >= 2)
{
Part = ColorPalette.DistrictByHue(Part, true);
Part.Sort(delegate(RGB left, RGB right)
{ return(left.Hue.CompareTo(right.Hue)); });
}
if (maxLength < Part.Count)
{
maxLength = Part.Count;
}
if (Part.Count == 0)
{
emptyListCount += 1;
}
List <Color> temp = new List <Color>();
foreach (RGB item in Part)
{
temp.Add(item.Color);
}
Result.Add(temp.GetRange(0, temp.Count));
Part.Clear();
}
if (emptyListCount != 0 && maxLength > 1)
{
double E_value = 0d;
double E_valueMax = 0d;
int GroupIndex = 0;
while (emptyListCount != 0)
{
Result.Sort(delegate(List <Color> left, List <Color> right)
{ return(right.Count.CompareTo(left.Count)); });
E_value = 0d;
E_valueMax = 0d;
GroupIndex = 0;
for (int i = 0; i < ColorsCount; i++)
{
if (Result[i].Count > 1)
{
Color left = ColorPalette.GetAverageColor(Result[i].GetRange(0, Result[i].Count / 2));
Color right = ColorPalette.GetAverageColor(Result[i].GetRange(Result[i].Count / 2, Result[i].Count / 2));
CIELab CIE_left = CIELab.RGB_to_CIELab(left);
CIELab CIE_right = CIELab.RGB_to_CIELab(right);
E_value = CIELab.deltaE76(CIE_left, CIE_right);
if (E_value > E_valueMax)
{
GroupIndex = i;
E_valueMax = E_value;
}
}
}
maxLength = Result[GroupIndex].Count;
if (maxLength == 1)
{
break;
}
Result[ColorsCount - 1].AddRange(Result[GroupIndex].GetRange(0, maxLength / 2));
Result[GroupIndex].RemoveRange(0, maxLength / 2);
emptyListCount--;
}
}
int index = Result.FindIndex(group => group.Count != 0);
for (int i = 0; i < Result.Count; i++)
{
if (Result[i].Count == 0)
{
Result[i] = Result[index];
}
}
return(ColorPalette.GetAverageColors(Result).ToArray());
}