private void InitSprite(Bitmap bmp, int cols, int rows)
{
if (bmp.PixelFormat != PixelFormat.Format8bppIndexed)
throw new Exception("Image must be 8bpp indexed");
var image = bmp.Bitmap8ToPixels();
var paleta = bmp.Palette;
var imgsz = bmp.Size;
var sz = new Size(imgsz.Width / cols, imgsz.Height / rows);
var rect = new Rectangle(Point.Empty, sz);
for (var f = 0; f < rows; f++)
{
for (var g = 0; g < cols; g++)
{
rect.Location = new Point(g * sz.Width, f * sz.Height);
var img = new Bitmap(rect.Width, rect.Height, PixelFormat.Format8bppIndexed);
img.SetPalette(paleta.Entries);
img.PixelsToBitmap8(rect, image);
RawSprites.Add(img);
}
}
}
public void SetImage(byte[] image)
{
var img = new Bitmap(ImageWidth, ImageHeight, PixelFormat.Format8bppIndexed);
img.PixelsToBitmap8(image);
Frame = img;
SetImagePalette();
}
public static Bitmap ToIndexFormat(this Bitmap image, Color[] palette)
{
var sz = image.Size;
var res = new Bitmap(sz.Width, sz.Height, PixelFormat.Format8bppIndexed);
res.SetPalette(palette);
var bmpdataori = image.Bitmap32ToPixels();
var bmpdatadest = new byte[sz.Height][];
var dic = new Dictionary<int, int>();
for (var f = 0; f < sz.Height; f++)
{
var pixelsori = bmpdataori[f];
var pixeldest = ReduceLine(pixelsori, palette,dic);
bmpdatadest[f] = pixeldest;
Debug.Print($"Scanline {f} colors {dic.Count}");
}
res.PixelsToBitmap8(bmpdatadest);
return res;
}
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