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

/**
   A shape that is a part of a scene.
*/
public interface SceneShape
{
    /**
       Draws this item.
       @param g2 the graphics context
    */
    void draw(Graphics2D g2);

    /**
       Draws the selection adornment of this item.
       @param g2 the graphics context
    */
    void drawSelection(Graphics2D g2);
   
    /**
       Sets the selection state of this item.
       @param b true if this item is selected
    */
    void setSelected(boolean b);
   
    /**
       Gets the selection state of this item.
       @return true if this item is selected
    */
    boolean isSelected();
   
    /**
       Translates this item by a given amount.
       @param dx the amount to translate in x-direction
       @param dy the amount to translate in y-direction
    */
    void translate(double dx, double dy);
   
    /**
       Tests whether this item contains a given point.
       @param p a point
       @return true if this item contains p
    */
    boolean contains(Point2D p);

}