简介
RT
code
friend std::ostream& operator<<(std::ostream& os, const Vertex& v){
os << "v " << v.X() << ", " << v.Y() << ", " << v.Z();
return os;
}
RT
friend std::ostream& operator<<(std::ostream& os, const Vertex& v){
os << "v " << v.X() << ", " << v.Y() << ", " << v.Z();
return os;
}