Rotacja obrazka

Question

package com.company;
import java.awt.*;
import java.awt.event.*;
import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.Graphics;
import java.awt.geom.Line2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.TreeSet;
import javax.swing.Timer;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;

import static sun.misc.PostVMInitHook.run;


public class Main {

    public static void main(String[] args) {
        Gui app = new Gui();
        app.buildGui();
    }
}

class Gui extends JPanel implements ActionListener {
    JFrame window = new JFrame();
    JButton startButton = new JButton();
    JButton exitButton = new JButton();
    JButton pushButton = new JButton();


    JLabel weightN = new JLabel("Masa");
    JLabel speedN = new JLabel("Szybkosc");
    JLabel countN = new JLabel("Kat");
   static public JTextField weight = new JTextField(5);
   static public JTextField speed = new JTextField(5);
   static public JTextField count = new JTextField(5);




    public void buildGui() {
        window = new JFrame();
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.setSize(600, 100);
        window.setTitle("Algortym łucznika");


        startButton = new JButton("Odswież");
        exitButton = new JButton("Koniec");
        pushButton = new JButton("Strzel");

        pushButton.addActionListener(this);
        exitButton.addActionListener(this);
        FlowLayout cp = new FlowLayout(FlowLayout.LEFT);

        window.setLayout(cp);
        window.getContentPane().add(startButton);
        window.getContentPane().add(pushButton);
        window.getContentPane().add(weightN);
        window.getContentPane().add(weight);
        window.getContentPane().add(speedN);
        window.getContentPane().add(speed);
        window.getContentPane().add(countN);
        window.getContentPane().add(count);



        window.getContentPane().add(exitButton);


        window.setVisible(true);
    }

    static public JTextField x = new JTextField(10);
    public void buildGui2() {

        window = new JFrame();
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.setSize(1200, 1000);
        window.setTitle("Algortym łucznika");

        GuiShow guiNew = new GuiShow();
        window.add(guiNew);
        JButton button = new JButton("Startuj");
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {

                guiNew.draw();

            }
        });
        window.add(button, BorderLayout.SOUTH);
//        window.add(x,BorderLayout.NORTH);

        window.setVisible(true);

    }





       public String getWeightDigitID(){
             return weight.getText();
        }


       public String getSpeedDigitID(){
                 return  speed.getText();
        }

        public String getCountDigitID(){
                return count.getText();
        }

        public void actionPerformed(ActionEvent e) {
        Object source = e.getSource();
        if (source == exitButton) {
            System.exit(0);
        }
        if (source == pushButton) {
            getWeightDigitID();
            getSpeedDigitID();
            getCountDigitID();

            buildGui2();


        }


    }
}
class GuiShow extends JPanel implements Runnable {


    private Thread runner = null;
    double x = 0;
    double y = 0;

    double R = 3.1415926 / 180.0;
    double vx, vy, t = 0.0;
    double dt = 0.003;
    double eps = 0.01;
    double c = 0.7;
    double g = 9.81;
    double m;




     @Override
    public void paintComponent(Graphics p) {



        BufferedImage arrow = LoadImage("C:\\Users\\Pawel Celuch\\Desktop\\arrow.png");





        super.paintComponent(p);
        Graphics2D g2d = (Graphics2D) p;

        g2d.drawImage(arrow, (int)x, (int)y+550, this);

    }


    BufferedImage LoadImage(String Filename){
        BufferedImage img = null;
        try{
            img = ImageIO.read(new File(Filename));
        } catch (IOException e){

        }

        return img;
    }

    double speed(){
        Gui s = new Gui();
        String x = s.getSpeedDigitID();

        double v=Double.parseDouble(s.getSpeedDigitID());

        return v;
    }

    double weight(){
        Gui s = new Gui();
        String x = s.getWeightDigitID();

        double v=Double.parseDouble(s.getWeightDigitID());

        return v;
    }


    double count(){
        Gui s = new Gui();
        String x = s.getCountDigitID();

        double v=Double.parseDouble(s.getCountDigitID());

        return v;
    }

    double alfaVX(double v, double alfa) {

        double co = Math.cos(R * alfa);

        vx = v * co;


        return vx;
    }

    double alfaVY(double v, double alfa) {

        double si = Math.sin(R * alfa);

        vy = v * si;

        return vy;
    }


    public void draw(){
        if (runner==null)
        {
            runner=new Thread(this);
            runner.start();
        }
    }

    public void run(){

        vx= alfaVX(speed(),count());
        vy= alfaVY(speed(),count());
        m = weight();

        double r = c / m;



        int n = 0;

        Thread ten=Thread.currentThread();
        while (y > -eps) {


            System.out.println(x + " " + y + " " + t);
            vx = vx - r * vx * dt;
            vy = vy - g * dt - r * vy * dt;
            x = x + vx * dt - 0.5 * r * vx * dt * dt;
            y = y + vy * dt - 0.5 * g * dt * dt + 0.5 * r * vy * dt * dt;
            double tmp = y;
            y=-y;


            t = t + dt;
            n = n + 1;
            try{
                Thread.sleep(5);
            }  catch (InterruptedException e) {
                e.printStackTrace();
            }
            repaint();
            y=tmp;
        }
        runner=null;
    }
}

Witam. Mam problem z obracaniem się obrazka. Próbowałem używać funkcji rotate, ale gdy używam jej to znika mi obrazek. Nie mam pojęcia jak zrobić by po każdej iteracji pętli zmieniał się kąt nachylenia strzały.

Answer 1

Sprawdź to:

https://www.youtube.com/watch?v=vHfGiTFWoc4