+ // depth
+ addChildToRoot("depth");
+ addNumber(lsystem->getDepth());
+
+ // initial segment diameter
+ addChildToRoot("diameter");
+ addNumber(lsystem->getDiameter());
+
+ // segment diameter factor
+ string diameterFactor = doubleToString(lsystem->getDiameterFactor());
+ addAttribute("factor", diameterFactor);