using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Phractal
{
    public partial class Form1 : Form
    {
        Graphics gfx;
        public Form1()
        {
            InitializeComponent();
        }

        private double[] Fractal(int iterations)
        {
            double[] map = new double[3] { 1, -2, 1 };
            for (int i = 0; i < iterations; i++)
                map = subdivide(map,iterations-i);
            return map;
        }

        private double[] subdivide(double[] previous, int amp)
        {
            Random rand = new Random();
            double[] returned = new double[previous.Length*2-1];
            for (int i = 0; i < returned.Length; i+=2)
            {
                returned[i] = previous[i / 2];
                if (i != returned.Length - 1)
                    returned[i + 1] = ((previous[i / 2] + previous[i / 2 + 1]) / 2) + (double)rand.Next(-amp, amp)/20d;
                /* change the 20d to something that suits you, the larger it is the smaller the amplifier's general strength*/
            }
            return returned;
        }

        private void OnPaint(object sender, PaintEventArgs e)
        {
            gfx = e.Graphics;
            gfx.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
            double[] subdivided = Fractal(8);
            Point[] poly = new Point[subdivided.Length];
            for (int i = 0; i < subdivided.Length; i++)
            {
                poly[i] = new Point(640/subdivided.Length*i, 300+(int)(subdivided[i] * 100));
            }
            gfx.FillPolygon(new System.Drawing.Drawing2D.LinearGradientBrush(new Point(0, 0), new Point(0, this.Size.Height), Color.Black, Color.CornflowerBlue),
                new Point[4]{
                    new Point(0,0),
                    new Point(this.Size.Width,0),
                    new Point(this.Size.Width,this.Size.Height),
                    new Point(0,this.Size.Height)});
            gfx.FillPolygon(new System.Drawing.Drawing2D.LinearGradientBrush(new Point(0, 0), new Point(0, this.Size.Height), Color.FromArgb(30,30,30), Color.Black), poly);


        }
    }
}