1 pv.SvgScene.rule = function(scenes) {
  2   var e = scenes.$g.firstChild;
  3   for (var i = 0; i < scenes.length; i++) {
  4     var s = scenes[i];
  5 
  6     /* visible */
  7     if (!s.visible) continue;
  8     var stroke = pv.color(s.strokeStyle);
  9     if (!stroke.opacity) continue;
 10 
 11     e = this.expect("line", e);
 12     e.setAttribute("cursor", s.cursor);
 13     e.setAttribute("x1", s.left);
 14     e.setAttribute("y1", s.top);
 15     e.setAttribute("x2", s.left + s.width);
 16     e.setAttribute("y2", s.top + s.height);
 17     e.setAttribute("stroke", stroke.color);
 18     e.setAttribute("stroke-opacity", stroke.opacity);
 19     e.setAttribute("stroke-width", s.lineWidth);
 20     e = this.append(e, scenes, i);
 21   }
 22   return e;
 23 };
 24