public static void Test_FloodFill_01()
{
int[][] field = new int[][]
{
new int[] { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
new int[] { 1, 1, 1, 1, 1, 0, 1, 1, 1, 1 },
new int[] { 1, 1, 1, 1, 0, 0, 0, 1, 1, 1 },
new int[] { 1, 1, 0, 0, 0, 0, 1, 1, 1, 1 },
new int[] { 1, 1, 0, 0, 0, 1, 1, 1, 1, 1 },
new int[] { 1, 0, 1, 1, 0, 0, 1, 1, 1, 1 },
new int[] { 1, 1, 0, 1, 0, 0, 0, 0, 1, 1 },
new int[] { 1, 1, 0, 1, 1, 1, 1, 0, 0, 1 },
new int[] { 1, 1, 0, 1, 1, 1, 1, 1, 1, 1 },
new int[] { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
};
int pixelsWith0 = 0;
Math2D.FloodFill_4Neighbour(
5,
5,
(x, y) => field[y][x] == 0, (x, y) => ++ pixelsWith0,
0, 0, 10, 10
);
Assert.AreEqual(19, pixelsWith0);
}