I am new to Java programming and I am trying to rotate an image using the following code but nothing seems to be working, I searched a lot online but nothing helped. I saw people doing it using BufferedImage but don't want to use that. This code is rotating entire 2d object instead of just image which i want to rotate. I found out this by displaying rectangle as images were not aligned on top of each other. Thanks for your help.
package package3;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Rotate extends JPanel {
public static void main(String[] args) {
new Rotate().go();
}
public void go() {
JFrame frame = new JFrame("Rotate");
JButton b = new JButton("click");
MyDrawPanel p = new MyDrawPanel();
frame.add(p);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(1000, 1000);
frame.setVisible(true);
}
class MyDrawPanel extends JPanel{
@Override
protected void paintComponent(Graphics g) {
Graphics2D g2d = (Graphics2D) g;
Image image = new ImageIcon(
getClass()
.getResource("wheel.png"))
.getImage();
g2d.drawImage(image, 0, 0, 500, 500, this);
int x = image.getHeight(this);
int y = image.getWidth(this);
g2d.rotate(1, x/2, y/2);
g2d.setBackground(Color.black);
g2d.drawImage(image, 0, 0, 500, 500, this);
g2d.setColor(Color.BLACK);
g2d.fillRect(0, 0, this.getWidth(), this.getHeight());
}
}
}
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Main {
public static void main(String[] args) {
new Main();
}
public Main() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
JFrame frame = new JFrame();
frame.add(new MyDrawPanel());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
}
class MyDrawPanel extends JPanel {
private BufferedImage image;
public MyDrawPanel() throws IOException {
image = ImageIO.read(getClass().getResource("/images/MegaTokyo.png"));
}
@Override
public Dimension getPreferredSize() {
return new Dimension(1000, 1000);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
if (image == null) {
return;
}
Graphics2D g2d = (Graphics2D) g.create();
drawImageTopLeft(g2d);
drawImageBottomRight(g2d);
drawImageMiddle(g2d);
g2d.rotate(Math.toRadians(45), getWidth() / 2, getHeight() / 2);
g2d.setColor(Color.BLACK);
g2d.drawRect(0, 0, this.getWidth(), this.getHeight());
g2d.dispose();
}
protected void drawImageTopLeft(Graphics2D g2d) {
g2d = (Graphics2D) g2d.create();
int x = 0;
int y = 0;
g2d.rotate(Math.toRadians(135), image.getWidth() / 2, image.getHeight() / 2);
g2d.drawImage(image, x, y, this);
g2d.dispose();
}
protected void drawImageBottomRight(Graphics2D g2d) {
g2d = (Graphics2D) g2d.create();
int x = (getWidth() - image.getWidth());
int y = (getHeight() - image.getHeight());
g2d.rotate(Math.toRadians(-45), getWidth() - (image.getWidth() / 2), getHeight() - (image.getHeight() / 2));
g2d.drawImage(image, x, y, this);
g2d.dispose();
}
protected void drawImageMiddle(Graphics2D g2d) {
g2d = (Graphics2D) g2d.create();
int x = (getWidth() - image.getWidth()) / 2;
int y = (getHeight() - image.getHeight()) / 2;
g2d.rotate(Math.toRadians(45), getWidth() / 2, getHeight() / 2);
g2d.drawImage(image, x, y, this);
g2d.dispose();
}
}
}