FIX: surface was not calculated when boxSize became zero
FIX: surface was not calculated when boxSize became zero

arose/ngl,arose/ngl,j0kaso/ngl,j0kaso/ngl,fredludlow/ngl,fredludlow/ngl,j0kaso/ngl,fredludlow/ngl,arose/ngl,arose/ngl,fredludlow/ngl