const size_t nbGridNodes = _coords[0].size() * _coords[1].size() * _coords[2].size();
vector< bool > isNodeOut( nbGridNodes, false );
_nodes.resize( nbGridNodes, 0 );
const size_t nbGridNodes = _coords[0].size() * _coords[1].size() * _coords[2].size();
vector< bool > isNodeOut( nbGridNodes, false );
_nodes.resize( nbGridNodes, 0 );