nl_tokens: Recursively finds a point in the octree and fetches the associated data .
pl_tokens: function fetch ( point , octree , octant ) { const children = octant . children ; let result = null ; let i , l ; let points ; if ( octant . contains ( point , octree . bias ) ) { if ( <mask> !== null ) { for ( i = 0 , l = children . length ; result === null && i < l ; ++ i ) { result = fetch ( point , octree , children [ i ] ) ; } } else if ( octant . points !== null ) { points = octant . points ; for ( i = 0 , l = points . length ; result === null && i < l ; ++ i ) { if ( point . equals ( points [ i ] ) ) { result = octant . data [ i ] ; } } } } return result ; }