import java.awt.*;
import java.awt.geom.*;

/**
   A scene shape that is composed of multiple geometric shapes.
*/
public abstract class CompoundShape extends SelectableShape
{
    public CompoundShape()
    {
	path = new GeneralPath();
	area = new Area();
    }

    /**
     * Adds the shape to the compound shape (unfilled by default).
     * @param s a Shape
     */
    protected void add(Shape s)
    {
	add(s, false);
    }
   
    /**
     * Adds the shape to the compound shape, with the caller
     * designating whether or not this shape should be filled.
     * @param s a shape
     * @param filled true to make this shape filled; false otherwise
     */
    protected void add(Shape s, boolean filled)
    {
	path.append(s, false);
	if (filled)
	    area.add(new Area(s));
    }

    public boolean contains(Point2D aPoint)
    {
	return path.contains(aPoint);
    }

    public void translate(double dx, double dy)
    {
	AffineTransform t = AffineTransform.getTranslateInstance(dx, dy);
	path.transform(t);
	area.transform(t);
    }

    public void draw(Graphics2D g2)
    {
	g2.fill(area);
	g2.draw(path);
    }
   
    private GeneralPath path;
    private Area area;
}