WallClockAnimation.java

import javax.swing.*;
import java.awt.*;
import java.awt.geom.*;
import java.util.Calendar;

public class WallClockAnimation extends JPanel {
    private static final int WIDTH = 400;
    private static final int HEIGHT = 400;
    private static final int CLOCK_RADIUS = 150;
    private double scaleFactor = 1.0;
    private boolean growing = true;

    public WallClockAnimation() {
        Timer timer = new Timer(1000, e -> {
            updateTransformations();
            repaint();
        });
        timer.start();
    }

    private void updateTransformations() {
        // Scaling transformation
        if (growing) {
            scaleFactor += 0.01;
            if (scaleFactor >= 1.2) growing = false;
        } else {
            scaleFactor -= 0.01;
            if (scaleFactor <= 1.0) growing = true;
        }
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        int centerX = WIDTH / 2;
        int centerY = HEIGHT / 2;

        // Apply scaling transformation
        g2d.translate(centerX, centerY);
        g2d.scale(scaleFactor, scaleFactor);
        g2d.translate(-centerX, -centerY);

        // Draw clock face
        g2d.setColor(Color.WHITE);
        g2d.fillOval(centerX - CLOCK_RADIUS, centerY - CLOCK_RADIUS, CLOCK_RADIUS * 2, CLOCK_RADIUS * 2);
        g2d.setColor(Color.BLACK);
        g2d.drawOval(centerX - CLOCK_RADIUS, centerY - CLOCK_RADIUS, CLOCK_RADIUS * 2, CLOCK_RADIUS * 2);

        // Draw hour markers
        for (int i = 0; i < 12; i++) {
            double angle = Math.toRadians(i * 30 - 90);
            int x1 = (int) (centerX + (CLOCK_RADIUS - 20) * Math.cos(angle));
            int y1 = (int) (centerY + (CLOCK_RADIUS - 20) * Math.sin(angle));
            int x2 = (int) (centerX + CLOCK_RADIUS * Math.cos(angle));
            int y2 = (int) (centerY + CLOCK_RADIUS * Math.sin(angle));
            g2d.drawLine(x1, y1, x2, y2);
        }

        // Get current time
        Calendar cal = Calendar.getInstance();
        int hour = cal.get(Calendar.HOUR);
        int minute = cal.get(Calendar.MINUTE);
        int second = cal.get(Calendar.SECOND);

        // Draw clock hands
        drawHand(g2d, centerX, centerY, hour * 30 + minute / 2, CLOCK_RADIUS * 0.5, 6, Color.BLACK);
        drawHand(g2d, centerX, centerY, minute * 6, CLOCK_RADIUS * 0.7, 4, Color.BLUE);
        drawHand(g2d, centerX, centerY, second * 6, CLOCK_RADIUS * 0.9, 2, Color.RED);
    }

    private void drawHand(Graphics2D g2d, int centerX, int centerY, double angle, double length, int width, Color color) {
        // Rotation transformation
        AffineTransform oldTransform = g2d.getTransform();
        g2d.rotate(Math.toRadians(angle), centerX, centerY);

        // Translation transformation
        g2d.setColor(color);
        g2d.setStroke(new BasicStroke(width));
        g2d.drawLine(centerX, centerY, centerX, centerY - (int) length);

        g2d.setTransform(oldTransform);
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("Wall Clock Animation");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(WIDTH, HEIGHT);
        frame.add(new WallClockAnimation());
        frame.setVisible(true);
    }
}