    01: import java.awt.*;
    02: import java.awt.geom.*;
    03:
    04: /**
    05:    An inivisible node that is used in the toolbar to draw an
    06:    edge.
    07: */
    08: public class PointNode implements Node
    09: {
    10:    /**
    11:       Constructs a point node with coordinates (0, 0)
    12:    */
    13:    public PointNode()
    14:    {
    15:       point = new Point2D.Double();
    16:    }
    17:
    18:    public void draw(Graphics2D g2)
    19:    {
    20:    }
    21:
    22:    public void translate(double dx, double dy)
    23:    {
    24:       point.setLocation(point.getX() + dx,
    25:          point.getY() + dy);
    26:    }
    27:
    28:    public boolean contains(Point2D p)
    29:    {
    30:       return false;
    31:    }
    32:
    33:    public Rectangle2D getBounds()
    34:    {
    35:       return new Rectangle2D.Double(point.getX(),
    36:          point.getY(), 0, 0);
    37:    }
    38:
    39:    public Point2D getConnectionPoint(Point2D other)
    40:    {
    41:       return point;
    42:    }
    43:
    44:    public Object clone()
    45:    {
    46:       try
    47:       {
    48:          return super.clone();
    49:       }
    50:       catch (CloneNotSupportedException exception)
    51:       {
    52:          return null;
    53:       }
    54:    }
    55:
    56:    private Point2D point;
    57: }