line2d.java

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            throw new NoSuchElementException("line iterator out of bounds");
          }
        if (at != null)
          at.transform(coords, 0, coords, 0, 1);
        return result;
      }
    };
  }

  /**
   * Return a flat path iterator, possibly applying a transform on the result.
   * This iterator is not threadsafe.
   *
   * @param at the transform, or null
   * @param flatness ignored, since lines are already flat
   * @return a new path iterator
   * @see #getPathIterator(AffineTransform)
   */
  public PathIterator getPathIterator(AffineTransform at, double flatness)
  {
    return getPathIterator(at);
  }

  /**
   * Create a new line of the same run-time type with the same contents as
   * this one.
   *
   * @return the clone
   *
   * @exception OutOfMemoryError If there is not enough memory available.
   *
   * @since 1.2
   */
  public Object clone()
  {
    try
      {
        return super.clone();
      }
    catch (CloneNotSupportedException e)
      {
        throw (Error) new InternalError().initCause(e); // Impossible
      }
  }

  /**
   * This class defines a point in <code>double</code> precision.
   *
   * @author Eric Blake <[e-mail]>
   * @since 1.2
   * @status updated to 1.4
   */
  public static class Double extends Line2D
  {
    /** The x coordinate of the first point. */
    public double x1;

    /** The y coordinate of the first point. */
    public double y1;

    /** The x coordinate of the second point. */
    public double x2;

    /** The y coordinate of the second point. */
    public double y2;

    /**
     * Construct the line segment (0,0)-&gt;(0,0).
     */
    public Double()
    {
    }

    /**
     * Construct the line segment with the specified points.
     *
     * @param x1 the x coordinate of the first point
     * @param y1 the y coordinate of the first point
     * @param x2 the x coordinate of the second point
     * @param y2 the y coordinate of the second point
     */
    public Double(double x1, double y1, double x2, double y2)
    {
      this.x1 = x1;
      this.y1 = y1;
      this.x2 = x2;
      this.y2 = y2;
    }

    /**
     * Construct the line segment with the specified points.
     *
     * @param p1 the first point
     * @param p2 the second point
     * @throws NullPointerException if either point is null
     */
    public Double(Point2D p1, Point2D p2)
    {
      x1 = p1.getX();
      y1 = p1.getY();
      x2 = p2.getX();
      y2 = p2.getY();
    }

    /**
     * Return the x coordinate of the first point.
     *
     * @return the value of x1
     */
    public double getX1()
    {
      return x1;
    }

    /**
     * Return the y coordinate of the first point.
     *
     * @return the value of y1
     */
    public double getY1()
    {
      return y1;
    }

    /**
     * Return the first point.
     *
     * @return the point (x1,y1)
     */
    public Point2D getP1()
    {
      return new Point2D.Double(x1, y1);
    }

    /**
     * Return the x coordinate of the second point.
     *
     * @return the value of x2
     */
    public double getX2()
    {
      return x2;
    }

    /**
     * Return the y coordinate of the second point.
     *
     * @return the value of y2
     */
    public double getY2()
    {
      return y2;
    }

    /**
     * Return the second point.
     *
     * @return the point (x2,y2)
     */
    public Point2D getP2()
    {
      return new Point2D.Double(x2, y2);
    }

    /**
     * Set this line to the given points.
     *
     * @param x1 the new x coordinate of the first point
     * @param y1 the new y coordinate of the first point
     * @param x2 the new x coordinate of the second point
     * @param y2 the new y coordinate of the second point
     */
    public void setLine(double x1, double y1, double x2, double y2)
    {
      this.x1 = x1;
      this.y1 = y1;
      this.x2 = x2;
      this.y2 = y2;
    }

    /**
     * Return the exact bounds of this line segment.
     *
     * @return the bounding box
     */
    public Rectangle2D getBounds2D()
    {
      double x = Math.min(x1, x2);
      double y = Math.min(y1, y2);
      double w = Math.abs(x1 - x2);
      double h = Math.abs(y1 - y2);
      return new Rectangle2D.Double(x, y, w, h);
    }
  } // class Double

  /**
   * This class defines a point in <code>float</code> precision.
   *
   * @author Eric Blake <[e-mail]>
   * @since 1.2
   * @status updated to 1.4
   */
  public static class Float extends Line2D
  {
    /** The x coordinate of the first point. */
    public float x1;

    /** The y coordinate of the first point. */
    public float y1;

    /** The x coordinate of the second point. */
    public float x2;

    /** The y coordinate of the second point. */
    public float y2;

    /**
     * Construct the line segment (0,0)-&gt;(0,0).
     */
    public Float()
    {
    }

    /**
     * Construct the line segment with the specified points.
     *
     * @param x1 the x coordinate of the first point
     * @param y1 the y coordinate of the first point
     * @param x2 the x coordinate of the second point
     * @param y2 the y coordinate of the second point
     */
    public Float(float x1, float y1, float x2, float y2)
    {
      this.x1 = x1;
      this.y1 = y1;
      this.x2 = x2;
      this.y2 = y2;
    }

    /**
     * Construct the line segment with the specified points.
     *
     * @param p1 the first point
     * @param p2 the second point
     * @throws NullPointerException if either point is null
     */
    public Float(Point2D p1, Point2D p2)
    {
      x1 = (float) p1.getX();
      y1 = (float) p1.getY();
      x2 = (float) p2.getX();
      y2 = (float) p2.getY();
    }

    /**
     * Return the x coordinate of the first point.
     *
     * @return the value of x1
     */
    public double getX1()
    {
      return x1;
    }

    /**
     * Return the y coordinate of the first point.
     *
     * @return the value of y1
     */
    public double getY1()
    {
      return y1;
    }

    /**
     * Return the first point.
     *
     * @return the point (x1,y1)
     */
    public Point2D getP1()
    {
      return new Point2D.Float(x1, y1);
    }

    /**
     * Return the x coordinate of the second point.
     *
     * @return the value of x2
     */
    public double getX2()
    {
      return x2;
    }

    /**
     * Return the y coordinate of the second point.
     *
     * @return the value of y2
     */
    public double getY2()
    {
      return y2;
    }

    /**
     * Return the second point.
     *
     * @return the point (x2,y2)
     */
    public Point2D getP2()
    {
      return new Point2D.Float(x2, y2);
    }

    /**
     * Set this line to the given points.
     *
     * @param x1 the new x coordinate of the first point
     * @param y1 the new y coordinate of the first point
     * @param x2 the new x coordinate of the second point
     * @param y2 the new y coordinate of the second point
     */
    public void setLine(double x1, double y1, double x2, double y2)
    {
      this.x1 = (float) x1;
      this.y1 = (float) y1;
      this.x2 = (float) x2;
      this.y2 = (float) y2;
    }

    /**
     * Set this line to the given points.
     *
     * @param x1 the new x coordinate of the first point
     * @param y1 the new y coordinate of the first point
     * @param x2 the new x coordinate of the second point
     * @param y2 the new y coordinate of the second point
     */
    public void setLine(float x1, float y1, float x2, float y2)
    {
      this.x1 = x1;
      this.y1 = y1;
      this.x2 = x2;
      this.y2 = y2;
    }

    /**
     * Return the exact bounds of this line segment.
     *
     * @return the bounding box
     */
    public Rectangle2D getBounds2D()
    {
      float x = Math.min(x1, x2);
      float y = Math.min(y1, y2);
      float w = Math.abs(x1 - x2);
      float h = Math.abs(y1 - y2);
      return new Rectangle2D.Float(x, y, w, h);
    }
  } // class Float
} // class Line2D