60 lines
1.7 KiB
Java
60 lines
1.7 KiB
Java
import java.awt.*;
|
|
import java.awt.event.ActionEvent;
|
|
import javax.swing.*;
|
|
|
|
public class SierpinskiCarpet extends JPanel {
|
|
private final int dim = 513;
|
|
private final int margin = 20;
|
|
|
|
private int limit = dim;
|
|
|
|
public SierpinskiCarpet() {
|
|
setPreferredSize(new Dimension(dim + 2 * margin, dim + 2 * margin));
|
|
setBackground(Color.white);
|
|
setForeground(Color.orange);
|
|
|
|
new Timer(2000, (ActionEvent e) -> {
|
|
limit /= 3;
|
|
if (limit <= 3)
|
|
limit = dim;
|
|
repaint();
|
|
}).start();
|
|
}
|
|
|
|
void drawCarpet(Graphics2D g, int x, int y, int size) {
|
|
if (size < limit)
|
|
return;
|
|
size /= 3;
|
|
for (int i = 0; i < 9; i++) {
|
|
if (i == 4) {
|
|
g.fillRect(x + size, y + size, size, size);
|
|
} else {
|
|
drawCarpet(g, x + (i % 3) * size, y + (i / 3) * size, size);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void paintComponent(Graphics gg) {
|
|
super.paintComponent(gg);
|
|
Graphics2D g = (Graphics2D) gg;
|
|
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
|
|
RenderingHints.VALUE_ANTIALIAS_ON);
|
|
g.translate(margin, margin);
|
|
drawCarpet(g, 0, 0, dim);
|
|
}
|
|
|
|
public static void main(String[] args) {
|
|
SwingUtilities.invokeLater(() -> {
|
|
JFrame f = new JFrame();
|
|
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
|
|
f.setTitle("Sierpinski Carpet");
|
|
f.setResizable(false);
|
|
f.add(new SierpinskiCarpet(), BorderLayout.CENTER);
|
|
f.pack();
|
|
f.setLocationRelativeTo(null);
|
|
f.setVisible(true);
|
|
});
|
|
}
|
|
}
|