import java.io.Serializable;

import java.awt.Point;
import java.awt.Rectangle;


public abstract class Shape implements GraphicsObject,
                                       Serializable {


    final static int HORIZONTAL = 0;
    final static int VERTICAL   = 1;
    final static int BOTH       = 2;


    protected Point     corner_point;
    protected Point     center_point;

    protected Rectangle bounding_box;

    protected Shape( ) {
	corner_point = new Point( );
	center_point = new Point( );
	bounding_box = new Rectangle( );
    }


    public abstract void initialize(Object[] args);


    public void move(Point point) {
	move(point.x, point.y);
    }

    public void move(int x, int y) {
	int x_pt = corner_point.x + (x - center_point.x);
	int y_pt = corner_point.y + (y - center_point.y);

	corner_point.move(x_pt, y_pt);
	bounding_box.move(x_pt, y_pt);

	center_point.move(x, y);
    }

    public abstract void rotate(double theta);

    public abstract void reflect(int axis);

    
    public Rectangle getBoundingBox( ) {
	return new Rectangle(bounding_box);
    }

    public abstract float getPerimeter( );

    public abstract float getArea( );

}