static int Main(string[] args)
{
if (Debugger.IsAttached)
{
args = new[] { "255", "0", "0", "15", @"C:\Users\Ansis\Downloads\RGB_24bits_palette_color_test_chart.png" }
}
;
Vector targetColor;
float threshold;
VectorMap map;
try
{
targetColor = new Vector(byte.Parse(args[0]) / 255f, byte.Parse(args[1]) / 255f, byte.Parse(args[2]) / 255f);
threshold = byte.Parse(args[3]);
using (var bitmap = new Bitmap(args[4]))
{
map = new VectorMap(bitmap);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return(0);
}
map.ForEach(delegate(Vector i)
{
float m = Math.Max(Math.Max(i.X, i.Y), i.Z);
return(m > 0 ? new Vector(i.X / m, i.Y / m, i.Z / m) : new Vector(1, 1, 1));
});
var mark = new Vector(-1, 0, 0);
int max = 0;
for (int y = 0; y < map.Height; y++)
{
for (int x = 0; x < map.Width; x++)
{
if (map[x, y] == mark)
{
continue;
}
int count = FloodFill(map, new Point(x, y), new Sphere(targetColor, threshold), mark);
if (count > max)
{
max = count;
}
}
}
if (Debugger.IsAttached)
{
Console.WriteLine(max.ToString());
Console.ReadKey(true);
}
return(max);
}
static int FloodFill(VectorMap map, Point origin, Sphere target, Vector fillColor)
{
var queue = new Queue <Point>(map.Width + map.Height);
queue.Enqueue(origin);
int count = 0;
while (queue.Count > 0)
{
Point p = queue.Dequeue();
Vector v = map[p];
if (v == fillColor || !target.Contains(v))
{
continue;
}
map[p] = fillColor;
count++;
if (p.X > 0)
{
queue.Enqueue(new Point(p.X - 1, p.Y));
}
if (p.Y > 0)
{
queue.Enqueue(new Point(p.X, p.Y - 1));
}
if (p.X < map.Width - 1)
{
queue.Enqueue(new Point(p.X + 1, p.Y));
}
if (p.Y < map.Height - 1)
{
queue.Enqueue(new Point(p.X, p.Y + 1));
}
}
return(count);
}
public VectorMap(VectorMap vectorMap)
: this(vectorMap.Size)
{
Buffer.BlockCopy(vectorMap.pixels, 0, pixels, 0, pixels.Length);
}