question: private static void addLeafWithNonExistingParents ( Spatial root , Spatial leaf ) { if ( ! ( root instanceof Node ) ) { logger . log ( Level . WARNING , "Cannot add new Leaf {0} to {1}, is not a Node!" , new Object [ ] { leaf . getName ( ) , root . getName ( ) } ) ; return ; } for ( Spatial s = leaf ; s . getParent ( ) != null ; s = s . getParent ( ) ) { Spatial parent = s . getParent ( ) ; Spatial other = findTaggedSpatial ( root , parent ) ; if ( other == null ) { continue ; } if ( other instanceof Node ) { logger . log ( Level . INFO , "Attaching {0} to {1} in root {2} to add leaf {3}" , new Object [ ] { s , other , root , leaf } ) ; for ( Spatial spt = leaf ; spt != parent ; spt = spt . getParent ( ) ) { spt . setUserData ( ORIGINAL_NAME , spt . getName ( ) ) ; spt . setUserData ( ORIGINAL_PATH , getSpatialPath ( spt ) ) ; spt = spt . getParent ( ) ; } Node otherNode = ( Node ) other ; otherNode . attachChild ( s ) ; logger . log ( LogLevel . USERINFO , "Attached Node {0} with leaf {0}" , new Object [ ] { other . getName ( ) , leaf . getName ( ) } ) ; return ; } else { logger . log ( Level . WARNING , "Cannot attach leaf {0} to found spatial {1} in root {2}, not a node." , new Object [ ] { leaf , other , root } ) ; } } logger . log ( Level . WARNING , "Could not attach new Leaf {0}, no root node found." , leaf . getName ( ) ) ; }
target:  Adds a leaf to a spatial, including all nonexisting parents.