public static void Feather(D2dFloodfillIsland island)
{
for (var i = island.Pixels.Count - 1; i >= 0; i--)
{
var pixel = island.Pixels[i];
var x = pixel.X;
var y = pixel.Y;
TryFeather(island, x - 1, y);
TryFeather(island, x + 1, y);
TryFeather(island, x, y - 1);
TryFeather(island, x, y + 1);
}
}
private static void TryFeather(D2dFloodfillIsland island, int x, int y)
{
if (x >= 0 && y >= 0 && x < width && y < height)
{
var i = x + y * width;
if (cells[i] == CELL_EMPTY)
{
cells[i] = CELL_CLAIM;
island.AddPixel(x, y);
}
}
else
{
island.AddPixel(x, y);
}
}
public static void Find(byte[] newData, int newWidth, int newHeight)
{
width = newWidth;
height = newHeight;
total = newWidth * newHeight;
spreadCount = 0;
if (cells == null || total > cells.Length)
{
cells = new byte[total];
}
for (var i = Islands.Count - 1; i >= 0; i--)
{
D2dPool <D2dFloodfillIsland> .Despawn(Islands[i], j => j.Clear());
}
Islands.Clear();
// Find all solid pixels
for (var i = 0; i < total; i++)
{
cells[i] = newData[i] > 127 ? CELL_SOLID : CELL_EMPTY;
}
for (var i = 0; i < total; i++)
{
if (cells[i] == CELL_SOLID)
{
currentIsland = D2dPool <D2dFloodfillIsland> .Spawn() ?? new D2dFloodfillIsland();
BeginFloodFill(i, i % newWidth, i / newWidth);
Islands.Add(currentIsland);
}
}
}
