I am trying to rotate an animated gif stored in an ImageIcon using an AffineTransform. The result is that the image does not get drawn.
Here's my code:
AffineTransform trans = AffineTransform.getRotateInstance(imgYaw, img.getImage().getWidth(null) / 2, img.getImage().getHeight(null) / 2);
AffineTransformOp transo = new AffineTransformOp(trans, AffineTransformOp.TYPE_BILINEAR);
BufferedImage bufferedimg = new BufferedImage(img.getImage().getWidth(null), img.getImage().getHeight(null), BufferedImage.TYPE_4BYTE_ABGR);
img.setImage(atransO.filter(bufferedimg, null));
img.paintIcon(null, g, x, y);
Not so much an answer, but an example of simplified workflow...
Basically, what this does is applies a AffineTransform
directly to the Graphics
context and paints the IconImage
to it...
Now, you could use the Graphics
context from BufferedImage
if that's what you need...
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.AffineTransform;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class TestImage {
public static void main(String[] args) {
new TestImage();
}
public static final String IMAGE_PATH = "C:\\Users\\shane\\Dropbox\\Ponies\\28490 - animated gif rainbow_dash_Small.gif";
public TestImage() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new GridLayout(1, 2));
frame.add(new JLabel(new ImageIcon(IMAGE_PATH)));
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
private ImageIcon img;
private float degrees;
public TestPane() {
img = new ImageIcon(IMAGE_PATH);
Timer timer = new Timer(16, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
degrees += 1;
repaint();
}
});
timer.start();
}
@Override
public Dimension getPreferredSize() {
return new Dimension(img.getIconWidth(), img.getIconHeight());
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g.create();
int x = getWidth() / 2;
int y = getHeight() / 2;
g2d.setTransform(AffineTransform.getRotateInstance(Math.toRadians(degrees), x, y));
x = (getWidth() - img.getIconWidth()) / 2;
y = (getHeight() - img.getIconHeight()) / 2;
img.paintIcon(this, g2d, x, y);
g2d.dispose();
}
}
}