68 /** Event handler to be called just before a node is being destroyed: it will be removed from the internal list.
69 * \note At *addition we use a smart pointer to assure all the implied guys use the same smrt. pnt., but at destructors the objects don't know anything but "this", thus the usage of plain pointers.
73 /** Event handler to be called just before an arc is being destroyed: it will be removed from the internal list.
74 * \note At *addition we use a smart pointer to assure all the implied guys use the same smrt. pnt., but at destructors the objects don't know anything but "this", thus the usage of plain pointers.