InitiateNodeToNodes

This routine generate the node to nodes mapping

• In other words, it generates info of node-numbers in mesh surrounding a node number
• This mapping is stored inside obj%nodeData%globalNodeNum
• For a local node number i, obj%nodeData(i)%globalNodeNum denotes the global node data surrounding the local node number.
• This list does not include self node.
• The method needs node-to-elements data, therefore if this data is not initiated, then this method calls InitiateNodeToElements().

INTERFACE
  MODULE SUBROUTINE InitiateNodetoNodes(obj)
    CLASS(Mesh_), INTENT(INOUT) :: obj
    !! mesh data
  END SUBROUTINE InitiateNodetoNodes
END INTERFACE