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;
using System.Diagnostics;

namespace lab2
{
    public partial class Form1 : Form
    {
        Point center = new Point(400, 300);
        PointF[] P = new PointF[4];
        Random r = new Random();

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            double w = 600;
            double h = 300;
            int a = 0;
            Random r = new Random();
            drawRectangle(w, h, 0,true);

            for (int i = 0; i < 3; i++)
            {
                w = w / 1.3;
                h = h / 1.3;
                drawRectangle(w, h, r.Next(0, 181),false);
            }

        }

        public void drawRectangle(double Width, double Height, int A, bool pre_defined)
        {
            Graphics g = pictureBox1.CreateGraphics();
            g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
            g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;

            System.Drawing.Brush brush = new System.Drawing.SolidBrush(Color.FromArgb(r.Next(0, 251), r.Next(0, 251), r.Next(0, 251)));
            Pen myPen = new Pen(brush, 2);
            myPen.Width = 2;
            int x = center.X;
            int y = center.Y;
            //top left
            P[0] = new PointF((float)Math.Round(x + (Width / 2) * Math.Cos(A) + (Height / 2) * Math.Sin(A)), (float)Math.Round(y - (Height / 2) * Math.Cos(A) + (Width / 2) * Math.Sin(A)));
            //top right
            P[1] = new PointF((float)Math.Round(x - (Width / 2) * Math.Cos(A) + (Height / 2) * Math.Sin(A)), (float)Math.Round(y - (Height / 2) * Math.Cos(A) - (Width / 2) * Math.Sin(A)));
            //bottom left
            P[2] = new PointF((float)Math.Round(x + (Width / 2) * Math.Cos(A) - (Height / 2) * Math.Sin(A)), (float)Math.Round(y + (Height / 2) * Math.Cos(A) + (Width / 2) * Math.Sin(A)));
            //bottom right
            P[3] = new PointF((float)Math.Round(x - (Width / 2) * Math.Cos(A) - (Height / 2) * Math.Sin(A)), (float)Math.Round(y + (Height / 2) * Math.Cos(A) - (Width / 2) * Math.Sin(A)));


            g.DrawLine(myPen, P[0], P[1]);
            g.DrawLine(myPen, P[1], P[3]);
            g.DrawLine(myPen, P[3], P[2]);
            g.DrawLine(myPen, P[2], P[0]);



        }


    }
}