Removes horizontal and vertical lines from tilesets (in.png -> out.png)

clean_lines.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;
using System.IO;

namespace fixs
{
    class Program
    {
        static void Main(string[] args)
        {
            Bitmap b = (Bitmap)Bitmap.FromFile("in.png");
            Bitmap o = new Bitmap(b.Width, b.Height);
            int r_x = 0, r_y = 0;
            for (int x = 0; x < b.Width; x++)
            {
                r_y = 0;
                for (int y = 0; y < b.Height; y++)
                {
                    if (b.GetPixel(x, y).A == 0) continue;
                    else
                    {
                        o.SetPixel(x, r_y, b.GetPixel(x, y));
                        r_y++;
                    }
                }
            }
            b = o;
            o = new Bitmap(o.Width, o.Height);
            r_x = 0; r_y = 0;
            for (int y = 0; y < b.Height; y++)
            {
                r_x = 0;
                for (int x = 0; x < b.Width; x++)
                {
                    if (b.GetPixel(x, y).A == 0) continue;
                    else
                    {
                        o.SetPixel(r_x, y, b.GetPixel(x, y));
                        r_x++;
                    }
                }
            }
            o.Save("out.png");
        }
    }
}