import java.util.Scanner;

/**
 * An abstract geometric object.  Provides some, but not much, functionality.
 * Probably should have get/set accessors for color, name and filled
 * @author gtowell
 * Created: 10/12/2020
 */
public abstract class GeometricObject {
    /** The color of the object */
    protected String color;
    /** The name of the object */
    protected String name;
    /** When drawn, should the object get filled */
    protected boolean filled;
    /**
     * The perimiter of the object
     * @return the perimiter
     */
    abstract public int getPerimiter();
    /**
     * The area enclosed by the object
     * @return the enclosed area
     */
    abstract public int getArea();
    
    public String toString() {
        return "This is a " + (filled?"filled ":"") + color + " " + name + " with perimiter " + getPerimiter() + " and area " + getArea();
    }

    public static void main(String[] args) {
        try (Scanner scann = new Scanner(System.in);) {
            System.out.println("How many sides (0 to quit, -1 for circle)");
            int sides = scann.nextInt();
            while (sides!=0) {
                if (sides<0) {
                    System.out.println("Radius");
                    new Circle(scann.nextInt());
                } else {
                    System.out.print("side length: ");
                    new RegularPolygon(sides, scann.nextInt());
                }
                System.out.println("How many sides (0 to quit, -1 for circle)");
                sides = scann.nextInt();
            }
        }
    }
}