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

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            double A, B, h, x = 0, y = 0, t = 0;
            A = Convert.ToDouble(textBox1.Text);
            B = Convert.ToDouble(textBox2.Text);
            h = Convert.ToDouble(textBox3.Text);

            String str = comboBox1.SelectedItem.ToString();
            MessageBox.Show(str);
            if (str == "Коло")
            {
                for(t = A; t <= B + 0.1 * h; t += h)
                {
                    x = Math.Sin(t);
                    y = Math.Cos(t);
                    chart1.Series[0].Points.AddXY(x, y);
                    x = Math.Round(x, 2); y = Math.Round(y, 2);
                    listBox1.Items.Add((x + "\t\t " + y));
                }
            }
            if (str == "Спіраль")
            {
                for (t = A; t <= B + 0.1 * h; t += h)
                {
                    x = Math.Sin(t)*t;
                    y = Math.Cos(t)*t;
                    chart1.Series[0].Points.AddXY(x, y);
                    x = Math.Round(x, 5); y = Math.Round(y, 5);
                    listBox1.Items.Add((x + "\t\t " + y));
                }
            }
            if (str == "Дельтоїда")
            {
                for (t = A; t <= B + 0.1 * h; t += h)
                {
                    x = Math.Cos(t)*2 + Math.Cos(t + t);
                    y = Math.Sin(t)*2 - Math.Sin(t + t);
                    chart1.Series[0].Points.AddXY(x, y);
                    x = Math.Round(x, 2); y = Math.Round(y, 2);
                    listBox1.Items.Add((x + "\t\t " + y));
                }
            }
            if (str == "Астроїда")
            {
                for (t = A; t <= B + 0.1 * h; t += h)
                {
                    x = (Math.Sin(t) * Math.Sin(t) * Math.Sin(t))*2;
                    y = (Math.Cos(t) * Math.Cos(t) * Math.Cos(t))*2;
                    chart1.Series[0].Points.AddXY(x, y);
                    x = Math.Round(x, 2); y = Math.Round(y, 2);
                    listBox1.Items.Add((x + "\t\t " + y));
                }
            }
        }
    }
}