Generate input file for OVITO

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

 namespace appbigdata
 {
     class ParticlesGenerator
     {

         public void GenerateParticles(int count)
         {
             String fileName = @"C:\opengl\data\random.xyz";
             int seed = (int)(System.DateTime.Now.Ticks / );
             Random random = new Random(seed);

             StreamWriter writer = new StreamWriter(fileName);
             try
             {
                 writer.WriteLine(count);
                 writer.WriteLine("Random Particles");
                 String[] particleTypes = new String[] { "C", "H" };
                 int maxValue = count;
                 for (int i = ; i < count; i++)
                 {
                     double x = random.Next(maxValue) * 0.01;
                     double y = random.Next(maxValue) * 0.01;
                     double z = random.Next(maxValue) * 0.001;
                     double v = random.NextDouble();
                     int index = v >= 0.5d ?  : ;
                     writer.WriteLine(String.Format("{0} {1} {2} {3}", particleTypes[index], x, y, z));
                 }
             }
             finally
             {
                 writer.Close();
             }
             System.Console.WriteLine(String.Format("save to:{0}", fileName));

         }
     }
 }