public GeometryIndex getNextVertex ( GeometryIndex index ) { if ( index . hasChild ( ) ) { return new GeometryIndex ( index . getType ( ) , index . getValue ( ) , getNextVertex ( index . getChild ( ) ) ) ; } else { return new GeometryIndex ( GeometryIndexType . TYPE_VERTEX , index . getValue ( ) + 1 , null ) ; } }
Given a certain index find the next vertex in line .