private static int PaintRle(Painter painter, ImgSize size, byte[] imgBytes, int x, int y, int last_pos, int rleLength)
{
int rleCounter = 0;
while ((rleCounter < rleLength) && (y < size.Height))
{
if (size.InRange(x, y))
{
byte currentByte = imgBytes[last_pos];
painter[x, y] = currentByte;
}
else
{
throw new Exception("RLE length overrun on output");
}
y++;
rleCounter++;
}
return(rleCounter);
}
private static void ExecutePaintInstruction(Painter painter, ImgSize size, byte[] imgBytes, int x, int rle_val, int paintInstructionsLength, ref int y, ref int n_r)
{
if (imgBytes[n_r] >= rle_val)
{
// { Run Length Encoding }
int last_pos = n_r + 1;
int rleLength = CalculateRleLength(size, imgBytes, y, rle_val, n_r);
y += PaintRle(painter, size, imgBytes, x, y, last_pos, rleLength);
n_r += 2;
}
else
{
// { Regular single pixel }
if (size.InRange(x, y))
{
painter[x, y] = imgBytes[n_r];
}
n_r++;
y++;
}
}