// Sample program that animates a ball.

import java.awt.*;

public class Ball1 {
    public static void main(String[] args) {
        double velocity = 300;  // pixels per second
        double angle = 45;
        int seconds = 30;
				
        double xVelocity = velocity * Math.cos(Math.toRadians(angle));
        double yVelocity = -velocity * Math.sin(Math.toRadians(angle));
		
        DrawingPanel p = new DrawingPanel(600, 600);
        p.setBackground(Color.CYAN);
        Graphics g = p.getGraphics();
		
        g.fillOval(295, 295, 10, 10);
        p.sleep(1000);
        double x = 300.0;
        double y = 300.0;
        for (int i = 1; i <= 10 * seconds; i++) {
            g.setColor(Color.WHITE);
            g.fillOval((int) x - 5, (int) y - 5, 10, 10);
            x += xVelocity / 10.0;
            y += yVelocity / 10.0;
            g.setColor(Color.BLACK);
            g.fillOval((int) x - 5, (int) y - 5, 10, 10);
            p.sleep(100);
        }
    }
}