public JavaMap(byte[] colors) : base(colors)
{
if (colors.Length != MAP_WIDTH * MAP_HEIGHT)
{
throw new ArgumentException($"Invalid image dimensions: {colors.Length} is not {MAP_WIDTH}*{MAP_HEIGHT}");
}
Image = new LockBitmap(MAP_WIDTH, MAP_HEIGHT);
Image.LockBits();
for (int y = 0; y < MAP_HEIGHT; y++)
{
for (int x = 0; x < MAP_WIDTH; x++)
{
byte color = colors[(MAP_WIDTH * y) + x];
if (ByteToColor.TryGetValue(color, out Color col))
{
Image.SetPixel(x, y, col);
}
else
{
Image.SetPixel(x, y, Color.Transparent);
}
}
}
Image.UnlockBits();
Original = Image.GetImage();
}
public static IEnumerable <BedrockMap> FromSettings(MapCreationSettings settings)
{
Bitmap original = ResizeImg(settings.Original, MAP_WIDTH * settings.SplitW, MAP_HEIGHT * settings.SplitH, settings.InterpMode);
LockBitmap final = new LockBitmap((Bitmap)original.Clone());
final.LockBits();
// first index = which map this is
var colors = new byte[settings.SplitW * settings.SplitH][];
for (int i = 0; i < colors.Length; i++)
{
colors[i] = new byte[MAP_WIDTH * MAP_HEIGHT * 4];
}
#region bedrock map algorithm
for (int y = 0; y < final.Height; y++)
{
for (int x = 0; x < final.Width; x++)
{
Color realpixel = final.GetPixel(x, y);
Color nearest = Color.FromArgb(realpixel.A < 128 ? 0 : 255, realpixel.R, realpixel.G, realpixel.B);
final.SetPixel(x, y, nearest);
int currentmap = y / MAP_HEIGHT * settings.SplitW + x / MAP_WIDTH;
int byteindex = MAP_WIDTH * 4 * (y % MAP_HEIGHT) + 4 * (x % MAP_WIDTH);
colors[currentmap][byteindex] = nearest.R;
colors[currentmap][byteindex + 1] = nearest.G;
colors[currentmap][byteindex + 2] = nearest.B;
// saving the alpha works just fine, but bedrock renders each pixel fully solid or transparent
// it rounds (<128: invisible, >=128: solid)
colors[currentmap][byteindex + 3] = nearest.A;
}
}
#endregion
final.UnlockBits();
var maps = new List <BedrockMap>();
for (int y = 0; y < settings.SplitH; y++)
{
for (int x = 0; x < settings.SplitW; x++)
{
Rectangle crop = new Rectangle(
x * original.Width / settings.SplitW,
y * original.Height / settings.SplitH,
original.Width / settings.SplitW,
original.Height / settings.SplitH);
maps.Add(new BedrockMap(
CropImage(original, crop),
CropImage(final.GetImage(), crop),
colors[settings.SplitW * y + x]));
}
}
return(maps);
}
private static void GiveError(LockBitmap img, int x, int y, int alpha, int red, int green, int blue, int proportion)
{
if (x >= 0 && y >= 0 && x < img.Width && y < img.Height)
{
Color old = img.GetPixel(x, y);
img.SetPixel(x, y, Color.FromArgb(
ByteClamp(old.A, (alpha * proportion) >> 4),
ByteClamp(old.R, (red * proportion) >> 4),
ByteClamp(old.G, (green * proportion) >> 4),
ByteClamp(old.B, (blue * proportion) >> 4)
));
}
}
public BedrockMap(byte[] colors) : base(colors)
{
if (colors.Length != MAP_WIDTH * MAP_HEIGHT * 4)
{
throw new ArgumentException($"Invalid image dimensions: {colors.Length} is not {MAP_WIDTH}*{MAP_HEIGHT}*4");
}
Image = new LockBitmap(MAP_WIDTH, MAP_HEIGHT);
Image.LockBits();
for (int y = 0; y < MAP_HEIGHT; y++)
{
for (int x = 0; x < MAP_WIDTH; x++)
{
int byteindex = (MAP_WIDTH * 4 * y) + (4 * x);
Image.SetPixel(x, y, Color.FromArgb(colors[byteindex + 3], colors[byteindex], colors[byteindex + 1], colors[byteindex + 2]));
}
}
Image.UnlockBits();
Original = Image.GetImage();
}
public static IEnumerable <JavaMap> FromSettings(MapCreationSettings settings)
{
Bitmap original = ResizeImg(settings.Original, MAP_WIDTH * settings.SplitW, MAP_HEIGHT * settings.SplitH, settings.InterpMode);
LockBitmap final = new LockBitmap((Bitmap)original.Clone());
final.LockBits();
// first index = which map this is
var colors = new byte[settings.SplitW * settings.SplitH][];
for (int i = 0; i < colors.Length; i++)
{
colors[i] = new byte[MAP_WIDTH * MAP_HEIGHT];
}
#region java map algorithm
for (int y = 0; y < final.Height; y++)
{
for (int x = 0; x < final.Width; x++)
{
Color oldpixel = final.GetPixel(x, y);
Color newpixel = Color.Empty;
// partial transparency is not allowed
if (oldpixel.A < 128)
{
newpixel = Color.FromArgb(0, 0, 0, 0);
}
else
{
if (!NearestColorCache.TryGetValue(oldpixel, out newpixel))
{
double mindist = Double.PositiveInfinity;
// find the color in the palette that is closest to this one
foreach (Color mapcolor in ColorToByte.Keys.Where(o => o.A == 255))
{
double distance = ColorDistance(oldpixel, mapcolor);
if (mindist > distance)
{
mindist = distance;
newpixel = mapcolor;
}
}
NearestColorCache[oldpixel] = newpixel;
}
}
final.SetPixel(x, y, newpixel);
if (settings.Dither)
{
// floyd-steinberg
int error_a = oldpixel.A - newpixel.A;
int error_r = oldpixel.R - newpixel.R;
int error_g = oldpixel.G - newpixel.G;
int error_b = oldpixel.B - newpixel.B;
GiveError(final, x + 1, y, error_a, error_r, error_g, error_b, 7);
GiveError(final, x - 1, y + 1, error_a, error_r, error_g, error_b, 3);
GiveError(final, x, y + 1, error_a, error_r, error_g, error_b, 5);
GiveError(final, x + 1, y + 1, error_a, error_r, error_g, error_b, 1);
}
int currentmap = y / MAP_HEIGHT * settings.SplitW + x / MAP_WIDTH;
int currentpixel = MAP_WIDTH * (y % MAP_HEIGHT) + (x % MAP_WIDTH);
if (newpixel == Color.FromArgb(0, 0, 0, 0))
{
colors[currentmap][currentpixel] = 0x00;
}
else
{
colors[currentmap][currentpixel] = ColorToByte[newpixel];
}
}
}
#endregion
final.UnlockBits();
var maps = new List <JavaMap>();
for (int y = 0; y < settings.SplitH; y++)
{
for (int x = 0; x < settings.SplitW; x++)
{
Rectangle crop = new Rectangle(
x * original.Width / settings.SplitW,
y * original.Height / settings.SplitH,
original.Width / settings.SplitW,
original.Height / settings.SplitH);
maps.Add(new JavaMap(
CropImage(original, crop),
CropImage(final.GetImage(), crop),
colors[settings.SplitW * y + x]));
}
}
return(maps);
}