//-----------------------------------------------//
//Program do symulowania efektów graficznych     //
//uzyskiwanych na ekranie urządzenia rastrowego  //
//poprzez odpowiednie adresowanie pamięci obrazu //
//                                               //
//Do wykorzystania w ramach przedmiotu           //
//Grafika komputerowa                            //
//                                               //
//Autor: Wojciech Sulej                          //
//Copyright: ITA WAT                             //
//Wersja: 1.10                                   //
//-----------------------------------------------//

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


namespace Graf_kom
{
    public partial class f_graf_kom : Form
    {
        readonly Bitmap m_obraz_w_pamieci;
        Bitmap m_ekran;

        int L;
        int K;
        int x;
        int rasterX;
        int rasterY;

        int p;

        Color N;

        public f_graf_kom()
        {
            InitializeComponent();

            N = Color.Blue;

            Bitmap im = new Bitmap("cat.bmp");

            m_obraz_w_pamieci = (Bitmap)im.Clone();

            L = m_obraz_w_pamieci.Height;
            K = m_obraz_w_pamieci.Width;

            m_ekran = (Bitmap)im.Clone();
        }

        private void MoveRaster()
        {
            if (rasterX == m_ekran.Width - 1)
            {
                rasterX = 0;
                if (rasterY == m_ekran.Height - 1)
                {
                    rasterY = 0;

                }
                else
                    rasterY++;
            }
            else
                rasterX++;
        }

        public void ReadPixel(int i, int j)
        {
            m_ekran.SetPixel(rasterX, rasterY, m_obraz_w_pamieci.GetPixel(i - 1, j - 1));

            MoveRaster();
        }

        public void ReadTlo(Color kolor_tla)
        {
            m_ekran.SetPixel(rasterX, rasterY, kolor_tla);

            MoveRaster();
        }

        public void SetBitMap(ref Bitmap image)
        {
            picbx_ekran.Image = image;
            picbx_ekran.Refresh();

            lb_nr_klatki.Text = "klatka = nr"   + p;
        }

        private void Work()
        {
            if (rb_zsuwanie.Checked) Efekt1();
            if (rb_przewijanie.Checked) Efekt2();
            if (rb_rozsuwanie.Checked) Efekt3();

            p++;
            x = p / L;
            if (x <= 100)
                progressBar1.Value = p;
            else
                progressBar1.Value = 0;

            SetBitMap(ref m_ekran);
        }
        public double GetBrightness()
        {
            double sum = 0;
            for (int j = 0; j < L; j++)
            {
                for (int i = 0; i < K; i++)
                {
                    sum += m_ekran.GetPixel(i, j).R;
                }
            }
            return sum / (m_ekran.Width * m_ekran.Height);
        }
        public double GetContrast(double brightness)
        {

            double sum = 0;
            for (int j = 0; j < L; j++)
            {
                for (int i = 0; i < K; i++)
                {
                    sum += Math.Pow(m_ekran.GetPixel(i, j).R - brightness, 2);
                }
            }
            sum /= (m_ekran.Width * m_ekran.Height);
            sum = Math.Sqrt(sum);
            return sum;
        }

        private void b_load_Click(object sender, EventArgs e)
        {
            p = 0;

            rasterX = 0;
            rasterY = 0;

            picbx_pamiec_obrazu.Image = m_obraz_w_pamieci;

            lb_roz_obrazu.Text = m_obraz_w_pamieci.Height.ToString() + " x " + m_obraz_w_pamieci.Width.ToString();

            for (int j = 1; j <= L; j++)
                for (int i = 1; i <= K; i++)
                    ReadTlo(N);

            picbx_ekran.Image = m_ekran;

            b_load.Enabled = false;
            b_reset.Enabled = true;

            b_start.Enabled = true;
            b_stop.Enabled = false;
            b_kolejna_klatka.Enabled = true;

            b_zmien_obraz.Enabled = true;
        }

        private void b_reset_Click(object sender, EventArgs e)
        {
            picbx_pamiec_obrazu.Image = null;
            lb_roz_obrazu.Text = "0 x 0";

            picbx_ekran.Image = null;
            lb_nr_klatki.Text = "klatka = 0";

            b_load.Enabled = true;
            b_reset.Enabled = false;

            b_start.Enabled = false;
            b_stop.Enabled = false;
            b_kolejna_klatka.Enabled = false;

            b_zmien_obraz.Enabled = false;
        }

        private void timer_automat_Tick(object sender, EventArgs e)
        {
            Work();
        }

        private void b_start_Click(object sender, EventArgs e)
        {
            timer_automat.Enabled = true;

            b_start.Enabled = false;
            b_stop.Enabled = true;
            b_kolejna_klatka.Enabled = false;

            b_reset.Enabled = false;
        }

        private void b_stop_Click(object sender, EventArgs e)
        {
            timer_automat.Enabled = false;

            b_start.Enabled = true;
            b_stop.Enabled = false;
            b_kolejna_klatka.Enabled = true;

            b_reset.Enabled = true;

        }

        private void b_kolejna_klatka_Click(object sender, EventArgs e)
        {
            Work();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Zmien_obraz();
        }

        private void rb_przewijanie_CheckedChanged(object sender, EventArgs e)
        {

        }

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void lb_obraz_w_pamieci_opis_Click(object sender, EventArgs e)
        {

        }

        private void progressBar1_Click(object sender, EventArgs e)
        {

        }

        private void button1_Click_1(object sender, EventArgs e)
        {
            Zadanie1A();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Zadanie1B();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            Zadanie1C();
        }

        private void label2_Click(object sender, EventArgs e)
        {

        }

        private void hScrollBar1_Scroll(object sender, ScrollEventArgs e)
        {
            ZmienObraz(hScrollBar1.Value);

            jasnosc.Text = "jasnosc= " + GetBrightness();
            kontrast.Text = "kontrast= " + GetContrast(GetBrightness());
            pj.Text = (GetBrightness() / 255.0 * 100).ToString("0.00") + "%";
            pk.Text = (GetContrast(GetBrightness()) / 127.5 * 100.0).ToString("0.00") + "%";
        }

        private void label3_Click(object sender, EventArgs e)
        {

        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }

        private void hScrollBar2_Scroll(object sender, ScrollEventArgs e)
        {
            zmienKontrast((float)(Math.Tan(hScrollBar2.Value * Math.PI / 181.0)));
            jasnosc.Text = "jasnosc= " + GetBrightness();
            kontrast.Text = "kontrast= " + GetContrast(GetBrightness());
            pj.Text = (GetBrightness() / 255.0 * 100).ToString("0.00") + "%";
            pk.Text = (GetContrast(GetBrightness()) / 127.5 * 100.0).ToString("0.00") + "%";
        }

        private void f_graf_kom_Load(object sender, EventArgs e)
        {

        }

        private void pj_TextChanged(object sender, EventArgs e)
        {

        }


    }
}