public static void Merge(FileInfo src, ref Bitmap target, PaletteSet palette)
{
Bitmap img = new Bitmap(Image.FromFile(src.FullName));
if (target == null)
{
target = new Bitmap(img.Width, img.Height, img.PixelFormat);
var transPixel = Color.FromArgb(0, 0, 0, 0);
for (var y = 0; y < target.Height; y++)
{
for (var x = 0; x < target.Width; x++)
{
target.SetPixel(x, y, transPixel);
}
}
}
for (var y = 0; y < img.Height; y++)
{
for (var x = 0; x < img.Width; x++)
{
var pixel = img.GetPixel(x, y);
if (pixel.A > 0)
{
if (palette != null)
{
pixel = palette.GetColor(pixel);
}
target.SetPixel(x, y, pixel);
}
}
}
}
public static Bitmap Generate(
DirectoryInfo source,
string[] parts,
FileInfo paletteFile, // Can be null
string imageExtension = ".png" // Case insensitive, used for input
)
{
var rand = new System.Random();
// Enumerate all source files
var src = new Inputs(source, imageExtension);
// Read palette info
PaletteSet palette = null;
if (paletteFile != null)
{
palette = new PaletteSet(paletteFile);
}
// Select source files by random
var srcFiles = new FileInfo[parts.Length];
for (var i = 0; i < srcFiles.Length; i++)
{
var srcSet = src.GetParts(parts[i]);
srcFiles[i] = srcSet[rand.Next(0, srcSet.Length)];
}
// Draw the layers together OMG
Bitmap target = null;
for (var i = 0; i < srcFiles.Length; i++)
{
ImageMerger.Merge(srcFiles[i], ref target, palette);
}
return(target);
}