private void GeneratePalette()
{
//TODO: more ways to decide which color to get
//Like removing similar colors (with less than 5% similarity) if there is more than 256 colors, etc.
//I probably can do that, using the groupby method.
ColorTable = NonIndexedPixels.AsParallel().GroupBy(x => x)
.OrderByDescending(g => g.Count()) //Order by most frequent values
.Select(g => g.FirstOrDefault()) //take the first among the group
.Take(MaximumNumberColor).ToList();
#region Handle transparency
//Make sure that the transparent color is added to list.
if (TransparentColor.HasValue && (!IsFirstFrame || UseGlobalColorTable) && ColorTable.Count == MaximumNumberColor)
{
//Only adds if there is MaximumNumberColor colors, so I need to make sure that the color won't be ignored.
//If there is less than MaximumNumberColor selected colors, it means that the transparent color is already selected.
//If the color isn't on the list, add or replace.
if (ColorTable.AsParallel().All(x => x != TransparentColor.Value))
{
//Adds to the last spot, keeping it sorted. (Since all the colors are ordered by descending)
ColorTable.Insert(MaximumNumberColor - 1, TransparentColor.Value);
//Remove the exceding value at the last position.
ColorTable.RemoveAt(MaximumNumberColor);
}
}
//I need to signal the other method that I won't need transparency.
WillUseTransparency = !IsFirstFrame && TransparentColor.HasValue && ColorTable.Contains(TransparentColor.Value);
#endregion
}
private void HandleTransparency()
{
//ColorTable = NonIndexedPixels.AsParallel().GroupBy(x => x)
// .OrderByDescending(g => g.Count()) //Order by most frequent values
// .Select(g => g.FirstOrDefault()) //take the first among the group
// .Take(MaximumNumberColor).ToList();
//Make sure that the transparent color is added to list.
if (TransparentColor.HasValue && (!IsFirstFrame || UseGlobalColorTable))// && ColorTable.Count == MaximumNumberColor)
{
//Only adds if there is MaximumNumberColor colors, so I need to make sure that the color won't be ignored.
//If there is less than MaximumNumberColor selected colors, it means that the transparent color is already selected.
//If the color isn't on the list, add or replace.
if (ColorTable.AsParallel().All(x => x != TransparentColor.Value))
{
//Adds to the last spot, keeping it sorted. (Since all the colors are ordered by descending)
ColorTable.Insert(ColorTable.Count - 1, TransparentColor.Value);
//Remove the exceding value at the last position.
if (ColorTable.Count > MaximumNumberColor)
{
ColorTable.RemoveAt(MaximumNumberColor);
}
}
}
//I need to signal the other method that I won't need transparency.
WillUseTransparency = !IsFirstFrame && TransparentColor.HasValue && ColorTable.Contains(TransparentColor.Value);
}
private void GeneratePalette(string path)
{
var colorList = new List <Color>();
NonIndexedPixels = new List <Color>();
#region Get the Pixels
var image = path.SourceFrom();
var pixelUtil = new PixelUtil(image);
pixelUtil.LockBits();
for (int x = 0; x < image.PixelWidth; x++)
{
for (int y = 0; y < image.PixelHeight; y++)
{
colorList.Add(pixelUtil.GetPixel(x, y));
}
}
pixelUtil.UnlockBits();
#endregion
//Save all the pixels in a property.
NonIndexedPixels.AddRange(colorList);
//TODO: more ways to decide which color to get
//Like removing similar colors (with less than 5% similarity) if there is more than 256 colors, etc.
//I probably can do that, using the groupby method.
//if (NonIndexedPixels.Count == 100)
//{
// ColorTable = new List<Color>
// {
// Color.FromRgb(255, 255, 255),
// Color.FromRgb(255, 0, 0),
// Color.FromRgb(0, 0, 255)
// };
// return;
//}
ColorTable = colorList.GroupBy(x => x) //Grouping based on its value
.OrderByDescending(g => g.Count()) //Order by most frequent values
.Select(g => g.FirstOrDefault()) //take the first among the group
.Take(256).ToList();
//Make sure that the transparent color is added to list.
if (!IsFirstFrame && TransparentColor.HasValue && ColorTable.Count == 256)
{
//Only adds if there is 256 colors, so I need to make sure that the color won't be ignored.
//If there is less than 256 selected colors, it means that the transparent color is already selected.
//If the color isn't on the list, add or replace.
if (ColorTable.All(x => x != TransparentColor.Value))
{
//Adds to the last spot, keeping it sorted. (Since all the colors are ordered by descending)
ColorTable.Insert(255, TransparentColor.Value);
//Remove the exceding value at the last position.
ColorTable.RemoveAt(256);
}
}
//I need to signal the other method that I won't need transparency.
WillUseTransparency = TransparentColor.HasValue && ColorTable.Contains(TransparentColor.Value);
}
