import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.swing.JPanel;
import javax.swing.Timer;

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author Klaudia
 */
public class Animacja extends javax.swing.JFrame implements ActionListener {

    Random r = new Random();
    final int X = 500, Y = 500;
    PanelGraficzny panel;
    Timer t;
    double d;
    double dm;
    List<Obiekt> LW = new ArrayList<>();
    static boolean ruch = true;

    public Animacja() {
        initComponents();
        setSize(550, 550);
        panel = new PanelGraficzny();
        panel.setBounds(25, 25, X, Y);
        add(panel);
        t = new Timer(10, this);
        t.start();
    }


    public void actionPerformed(ActionEvent ae) {
        panel.repaint();
    }

    class PanelGraficzny extends JPanel implements MouseListener {

        public PanelGraficzny() {
            addMouseListener(this);
        }

        protected void paintComponent(Graphics g) {
            g.clearRect(0, 0, X, Y);
            for (Obiekt o : LW) {
                //d=r.nextInt(70)+45;
                //dm = (1/3)*d;
                o.rysuj(g);
            }
        }

        @Override
        public void mouseClicked(MouseEvent me) {

        }

        @Override
        public void mousePressed(MouseEvent e) {
            if (e.isAltDown() || e.isShiftDown()) {
                ruch = false;
                return;
            }
            int x0 = e.getX();
            int y0 = e.getY();
            d = r.nextInt(70) + 45;
            dm = 0.3333333 * d;
            Color c = new Color(r.nextInt(256), r.nextInt(256), r.nextInt(256));
            Obiekt o = new Obiekt(x0, y0, d, dm);
            LW.add(o);
            o.start();
            ruch = true;
            panel.repaint();
        }

        @Override
        public void mouseReleased(MouseEvent me) {

        }

        @Override
        public void mouseEntered(MouseEvent me) {

        }

        @Override
        public void mouseExited(MouseEvent me) {

        }
    }

    public class Obiekt extends Thread {

        double d1, d2;
        Color k, k2;

        Random r = new Random();
        int dt;
        int x, y;

        public Obiekt(int x, int y, double d1, double d2) {
            this.x = x;
            this.y = y;
            this.d1 = d1;
            this.d2 = d2;

            k = new Color(r.nextInt(256), r.nextInt(256), r.nextInt(256)); // losowy kolor trojkata
            k2 = new Color(r.nextInt(256), r.nextInt(256), r.nextInt(256));
            dt = 550 + r.nextInt(900);
        }

        void rysuj(Graphics g) { // x0, y0 - współrzędne punktu zaczepienia wahadła
            g.setColor(k);
            //int x = x0 + (int) (d1 * Math.sin(alfa));
            //int y = y0 + (int) (d2 * Math.cos(alfa));
            // g.drawLine(x0, y0, x, y);
            int dx = (int) d1;
            int dy = (int) d2;
            g.fillOval(x, y, dx, dx);

            g.setColor(k2);
            g.fillOval(x + dy, y + dy, dy, dy);
        }

        public void run() {
            while (true) {
                if (Animacja.ruch) {
                    //d1=r.nextInt(70)+45;
                    //d2=(1/3)*d1;
                    k = new Color(r.nextInt(256), r.nextInt(256), r.nextInt(256)); // losowy kolor trojkata
                    k2 = new Color(r.nextInt(256), r.nextInt(256), r.nextInt(256));
                }
                try {
                    Thread.sleep(dt); //uśpienie wątku na 5 milisekund
                } catch (InterruptedException e) {
                }
            }
        }

    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 400, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 300, Short.MAX_VALUE)
        );

        pack();
    }// </editor-fold>//GEN-END:initComponents

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(Animacja.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Animacja.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Animacja.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Animacja.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Animacja().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    // End of variables declaration//GEN-END:variables
}