У меня проблемы с использованием AffineTransform в сочетании с Graphics2D.translate

Question

, поэтому прежде всего хочу сказать, что я новичок в использовании функции перевода AffineTranslation и Graphics2D. Прошу прощения, если мой вопрос непонятен! К сожалению, я не знаю, как сформулировать вопрос.

Чего я пытаюсь достичь: Я хочу иметь камеру, которая следует за игроком, и мне также нужен AffineTransform, который управляет вращение игрока. Поэтому мне в основном нужна классная камера c в сочетании с возможностью вращать игрока с помощью кнопок 'D' и 'A' . Пример этого "вращения" :

This is taken out of my game and the rotation works as intended. However when I tried adding a camera that follows the player something weird happened. This is the code inside my paintComponent class:

public void paintComponent(Graphics g) {        
    Graphics2D g2d = (Graphics2D) g;
    super.paintComponent(g2d);
    
    
    g2d.translate(playerCam.getX(), playerCam.getY());
    //Set font
    g2d.setFont(pixelFont_reg);
    //
    AffineTransform backup = g2d.getTransform();
    
    AffineTransform a = AffineTransform.getRotateInstance(player.getRotation(),player.getX() + (player.getWidth() / 2),player.getY() + (player.getHeight() / 2));

    
    
    //Paint grid of grass as a test of Assets class
    for(Tile tile : tiles) {

        tile.drawTile(g2d);
    
    }
    
    
    
    
    
    
    
    //Rotate player depending on rotation var
    g2d.transform(a);
    
    player.drawEntity(g2d);
    
    
    //Stop rotating player
    g2d.setTransform(backup);

    g2d.translate(-playerCam.getX(), -playerCam.getY());
    
    //Draw Font
    g2d.setColor(Color.white);
    g2d.drawString("FPS: " + Integer.toString(GameLoop.frameRate), 10, 40);
    //End of Draw Font
    
    
    
}

This code didn't affect the player at all. It only affected the tiles and the text I had displayed? I predict that my AffineTransform that handles the rotation has something to do with it but I have no clue on why? Does anyone have a solution to this issue? I searched the web but because I didn't know how to word the issue it resulted in zero results.

You can see the issue здесь .

Спасибо!

EDIT [ MRE]

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;


import javax.swing.JFrame;
import javax.swing.JPanel;

import javax.swing.Timer;

public class myPanel extends JPanel {

    private double rotation = Math.toRadians(45);
    private static final long serialVersionUID = 1L;
    private Rectangle2D.Double player = new Rectangle2D.Double(250,250,50,50);
    private double cameraX,cameraY;
    
    public myPanel() {
        
        timer.start();
    }
    public Dimension getPreferredSize() {
        return new Dimension(500,500);
    }
    
        public void paintComponent(Graphics g) {
    //TODO In this MRE I prove that the AffineTransformation that has an effect on the player Rectangle is not effected by the g2d.translate(). How do I fix this issue?
    
    Graphics2D g2d = (Graphics2D) g;
    super.paintComponent(g2d);
    AffineTransform backup = g2d.getTransform();
    AffineTransform rotationTransform = AffineTransform.getRotateInstance(rotation,player.getX() + (player.getWidth() / 2), player.getY() + (player.getHeight() / 2));
    rotationTransform.concatenate(g2d.getTransform());
    //Translate using Graphics2D
    cameraX++; 
    cameraY++;
    rotationTransform.translate(cameraX, cameraY);  
    g2d.setColor(Color.red);
    g2d.fillRect(0, 0, this.getWidth(), this.getHeight());
    
    g2d.setColor(Color.black);
    //Transform Player below
    g2d.setTransform(rotationTransform);
    g2d.fill(player);
    
    backup.concatenate(g2d.getTransform());
    g2d.setTransform(backup);
    
    //End of Transform Player
    
    //Translate back using Graphics2D
    rotationTransform.translate(-cameraX, -cameraY);    
}
    
     Timer timer = new Timer(60, new ActionListener() {

        @Override
        public void actionPerformed(ActionEvent e) {
            repaint();
            
            //Rotate player
            rotation += 0.1;
            
        }
        
        
    });
    public static void main(String[] args) {
        
    
        JFrame frame = new JFrame("Test");
        
        frame.add(new myPanel());
        frame.getPreferredSize();
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}

Любая помощь приветствуется!