static public void Split(string fileName, string outDir, int countPerLine)
{
if (!Directory.Exists(outDir))
{
Directory.CreateDirectory(outDir);
}
var bmp = Bmp.FromFile(fileName);
var width = bmp.bmih.biWidth;
var height = Math.Abs(bmp.bmih.biHeight);
// 縦横ピクセル数同じ限定
var sx = width / countPerLine;
var sy = sx;
var index = 0;
for (var y = 0; y < height; y += sy)
{
for (var x = 0; x < width; x += sx)
{
var outfile = string.Empty;
if (x + sx == width)
{
// 右端の画像はインデックス用
outfile = Path.Combine(outDir, index.ToString() + "-index.bmp");
}
else
{
index++;
outfile = Path.Combine(outDir, index.ToString() + ".bmp");
}
var copiedBitmap = bmp.Copy(x, y, sx, sy);
copiedBitmap.ToFile(outfile);
Console.WriteLine("wrote {0} x={1} y={2}", outfile, x, y);
}
}
}
static public void Mux(string[] fileNames, string outFile, int countPerLine)
{
List <Bmp> bmps = new List <Bmp>();
var lines = (fileNames.Length + countPerLine - 1) / countPerLine;
var index = 0;
for (var y = 0; y < lines; ++y)
{
for (var x = 0; x < countPerLine; ++x)
{
bmps.Add(Bmp.FromFile(fileNames[index]));
index++;
}
}
bool palettable = IsPalettable(bmps);
List <RGBQUAD> colors = null;
if (palettable)
{
// パレット統合
colors = CombinePalettes(bmps);
if (colors.Count > 256)
{
palettable = false;
}
}
if (palettable)
{
ushort biBitCount = 8;
if (colors.Count <= 2)
{
biBitCount = 1;
}
if (colors.Count <= 16)
{
biBitCount = 4;
}
else
{
biBitCount = 8;
}
Bmp bmp = new Bmp();
bmp.bmih = bmps[0].bmih;
var width = bmps[0].bmih.biWidth;
var height = Math.Abs(bmps[0].bmih.biHeight);
bmp.bmih.biWidth = width * countPerLine;
bmp.bmih.biHeight = height * lines;
bmp.bmih.biBitCount = biBitCount;
if (bmp.bmih.biClrUsed == 0)
{
bmp.colorTable = new RGBQUAD[1 << biBitCount];
}
else
{
bmp.bmih.biClrUsed = (uint)(colors.Count);
bmp.colorTable = new RGBQUAD[bmp.bmih.biClrUsed];
}
for (int i = 0; i < colors.Count; ++i)
{
bmp.colorTable[i] = colors[i];
}
int lineStride = bmp.GetLineStride();
bmp.imageData = new byte[Math.Abs(lineStride * bmp.bmih.biHeight)];
index = 0;
for (var y = 0; y < lines; ++y)
{
for (var x = 0; x < countPerLine; ++x)
{
bmp.Paste(x * width, y * height, bmps[index]);
index++;
}
}
bmp.ToFile(outFile);
}
else
{
throw new NotImplementedException();
}
}