import java.awt.Color;
import java.awt.Graphics;
import java.awt.geom.Rectangle2D;
public class Ball {
    private int x;
    private int y;
    private int radius;
    private int rise;
    private int run;
    private boolean visable; 
    public Ball(int radius){
        x=randInt(350,450);
        y=randInt(250,350);
        this.radius=radius;
        rise=randInt(1,8);
        run=randInt(-8,8);
        setVisable(false);
    }
    public int randInt(int min, int max){
        return min+(int)((max-min)*Math.random());
    }
    public void move(){
        x+=run;
        y+=rise;
    }
    public void bounceVertical(){
        rise*=-1;
    }
    public void bounceHorizontal(){
        run*=-1;
    }
    public void draw(Graphics g){
        if (visable){
            Color c=g.getColor();
            g.setColor(Color.BLUE);
            g.fillOval(x-radius, y-radius, 2*radius, 2*radius);
            g.setColor(c);
        }        
    }
    public void setVisable(boolean visable) {
        this.visable = visable;
    }
    public boolean isVisable() {
        return visable;
    }
    public Rectangle2D area(){
        return new Rectangle2D.Double(x-radius, y-radius, 2*radius, 2*radius);
    }
    public void setRise(int rise){ this.rise=rise;}
    public void setRun(int run){ this.run=run;}
    public int getRise(){return rise;}
    public int getRun(){return run;}
}