use of Affine Transform
Tue Nov 11, 2008 8:17 pm
use of Affine Transform in java
- Code:
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.image.*;
import java.awt.geom.AffineTransform;
public class AffineTransformExample extends JFrame {
ShowLabel label;
JComboBox shearX, shearY;
String[] shear = { "0.00", "0.25", "0.50", "0.75", "1.00" };
public AffineTransformExample() {
super("Affine Transform Example");
Container container = getContentPane();
label = new ShowLabel();
container.add(label);
JPanel panel = new JPanel();
panel.setLayout(new GridLayout(2, 4, 5, 5));
shearX = new JComboBox(shear);
shearX.setSelectedItem("0.00");
panel.add(new JLabel("Shear X:"));
panel.add(shearX);
shearX.addActionListener(new ComboBoxListener());
shearY = new JComboBox(shear);
shearY.setSelectedItem("0.00");
panel.add(new JLabel("Shear Y:"));
panel.add(shearY);
shearY.addActionListener(new ComboBoxListener());
container.add(BorderLayout.NORTH, panel);
setSize(350,300);
setVisible(true);
}
public static void main(String arg[]) {
new AffineTransformExample();
}
class ComboBoxListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
JComboBox box = (JComboBox) e.getSource();
if (box == shearX) {
label.shearx = Double.parseDouble((String) box.getSelectedItem());
label.value(true);
label.filter();
label.repaint();
} else if (box == shearY) {
label.sheary = Double.parseDouble((String) box.getSelectedItem());
label.value(true);
label.filter();
label.repaint();
}
}
}
}
class ShowLabel extends JLabel {
Image image;
BufferedImage bufferedImage1, bufferedImage2;
BufferedImage bufferedImage;
Graphics2D g2d;
AffineTransform affineTransform;
double shearx = 1.0, sheary = 1.0;
ShowLabel() {
image = Toolkit.getDefaultToolkit().getImage("image4.jpg");
MediaTracker mediaTracker = new MediaTracker(this);
mediaTracker.addImage(image, 1);
try {
mediaTracker.waitForAll();
} catch (Exception e) {}
createImages();
affineTransform = new AffineTransform();
}
public void createImages() {
bufferedImage1 = new BufferedImage(image.getWidth(this), image
.getHeight(this), BufferedImage.TYPE_INT_RGB);
g2d = bufferedImage1.createGraphics();
g2d.drawImage(image, 0, 0, this);
bufferedImage = bufferedImage1;
bufferedImage2 = new BufferedImage(image.getWidth(this), image
.getHeight(this), BufferedImage.TYPE_INT_RGB);
}
public void value(boolean scale, boolean shear) {
if (shear) {
affineTransform.setToShear(shearx, sheary);
shear = true;
}
}
public void filter() {
AffineTransformOp affineTransformOp = new AffineTransformOp
(affineTransform, null);
Graphics2D G2D = bufferedImage2.createGraphics();
G2D.clearRect(0, 0, bufferedImage2.getWidth(this), bufferedImage2.
getHeight(this));
affineTransformOp.filter(bufferedImage1, bufferedImage2);
bufferedImage = bufferedImage2;
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2D = (Graphics2D) g;
g2D.drawImage(bufferedImage, 0, 0, this);
}
- Attachments
-
- Affine Transform in java
- affineTransform.gif (14.67 KiB) Viewed 7798 times
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