std::string nomMaille(TYPE_MAILLE tm, int nl);
bool appartientVN(int n, std::vector<int> V);
float distance2(float x1, float y1, float z1, float x2, float y2, float z2);
std::string nomMaille(TYPE_MAILLE tm, int nl);
bool appartientVN(int n, std::vector<int> V);
float distance2(float x1, float y1, float z1, float x2, float y2, float z2);