/**
  * Writes the <code>shape</code>, <code>coords</code>, <code>href</code>,
  * <code>nohref</code> Attribute for the specified figure and ellipse.
  *
  * @return Returns true, if the circle is inside of the image bounds.
  */
 private boolean writeCircleAttributes(IXMLElement elem, SVGFigure f, Ellipse2D.Double ellipse) {
     AffineTransform t = TRANSFORM.getClone(f);
     if (t == null) {
         t = drawingTransform;
     } else {
         t.preConcatenate(drawingTransform);
     }
     
     if ((t.getType() &
             (AffineTransform.TYPE_UNIFORM_SCALE | AffineTransform.TYPE_TRANSLATION)) ==
             t.getType() &&
             ellipse.width == ellipse.height
             ) {
         
         Point2D.Double start = new Point2D.Double(ellipse.x, ellipse.y);
         Point2D.Double end = new Point2D.Double(ellipse.x + ellipse.width, ellipse.y + ellipse.height);
         t.transform(start, start);
         t.transform(end, end);
         ellipse.x = Math.min(start.x, end.x);
         ellipse.y = Math.min(start.y, end.y);
         ellipse.width = Math.abs(start.x - end.x);
         ellipse.height = Math.abs(start.y - end.y);
         
         elem.setAttribute("shape", "circle");
         elem.setAttribute("coords",
                 (int) (ellipse.x + ellipse.width / 2d)+","+
                 (int) (ellipse.y + ellipse.height / 2d)+","+
                 (int) (ellipse.width / 2d)
                 );
         writeHrefAttribute(elem, f);
         return bounds.intersects(ellipse.getBounds());
     } else {
         return writePolyAttributes(elem, f, (Shape) ellipse);
     }
 }
 /**
  * Writes the <code>shape</code>, <code>coords</code>, <code>href</code>,
  * <code>nohref</code> Attribute for the specified figure and rectangle.
  *
  * @return Returns true, if the rect is inside of the image bounds.
  */
 private boolean writeRectAttributes(IXMLElement elem, SVGFigure f, Rectangle2D.Double rect) {
     AffineTransform t = TRANSFORM.getClone(f);
     if (t == null) {
         t = drawingTransform;
     } else {
         t.preConcatenate(drawingTransform);
     }
     
     if ((t.getType() &
             (AffineTransform.TYPE_UNIFORM_SCALE | AffineTransform.TYPE_TRANSLATION)) ==
             t.getType()
             ) {
         
         Point2D.Double start = new Point2D.Double(rect.x, rect.y);
         Point2D.Double end = new Point2D.Double(rect.x + rect.width, rect.y + rect.height);
         t.transform(start, start);
         t.transform(end, end);
         Rectangle r = new Rectangle(
                 (int) Math.min(start.x, end.x),
                 (int) Math.min(start.y, end.y),
                 (int) Math.abs(start.x - end.x),
                 (int) Math.abs(start.y - end.y)
                 );
         
         elem.setAttribute("shape", "rect");
         elem.setAttribute("coords",
                 r.x + ","+
                 r.y + ","+
                 (r.x + r.width) + ","+
                 (r.y + r.height)
                 );
         writeHrefAttribute(elem, f);
         return bounds.intersects(r);
     } else {
         return writePolyAttributes(elem, f, (Shape) rect);
     }
 }