whyWontYouWork.cs

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;
using Processing;

namespace EDStatistics
{
    class Program
    {
        static void Main()
        {
            var image = new PSprite(16000, 16000);
            var pixels = image.Art.GetPixels();

            var i = new Coordinates() { x = -42213.81f, y = -29359.81f };
            var a = new Coordinates() { x = 40503.81f, y = 39518.34f };

            var count = 0;

            const int BufferSize = 4096;
            using (var fileStream = File.OpenRead("systemsWithCoordinates.json"))
            using (var streamReader = new StreamReader(fileStream, Encoding.UTF8, true, BufferSize))
            {
                string line;
                while ((line = streamReader.ReadLine()) != null)
                {
                    count++;

                    if (count % 5 != 0) { continue; }

                    line = line.Trim();
                    if (line.Length < 3) { continue; }
                    if (line.Substring(line.Length - 1, 1).Equals(","))
                    {
                        line = line.Substring(0, line.Length - 1);
                    }
                    var system = JsonConvert.DeserializeObject<StarSystem>(line);
                    if (system is null) { continue; }
                    var b = system.coords;

                    var c = new Coordinates((b.x - i.x) / (a.x - i.x), (b.y - i.y) / (a.y - i.y));
                    c.x *= image.Width;
                    c.y *= image.Height;

                    var x = (int)c.x;
                    var y = (int)c.y;

                    var address = (x + (y * image.Width)) * 4;
                    if (address >= pixels.Length || address < 0) { continue; }

                    pixels[address] = 255;
                    pixels[address + 1] = 0;
                    pixels[address + 2] = 0;
                    var old = pixels[address + 3];
                    pixels[address + 3] = 255;//(byte)(old == 255 ? old : old + 1);
                    var newP = pixels[address + 3];

                    if (count % 500000 == 0) { Console.Title = count.ToString(); }
                }
            }

            image.Art.SetPixels(pixels);
            image.Save("image.png");
            Console.WriteLine("Finished.");
            Console.Read();
        }
    }
}