C++ Calling private constructor in own class

Question

Im using VCG library I have a private constructor since Trimesh cant be copied in my header file MyProcessing.h

class MyMesh    : public vcg::tri::TriMesh< std::vector<MyVertex>, std::vector<MyFace> , 

std::vector<MyEdge>  > {

private:
    MyMesh(const TriMesh &mesh);
    MyMesh operator= (const TriMesh &mesh);

};

And I have a lot of trouble calling it in my MeshProcessing.cpp file What im trying to do is create My mesh in there This is what ive tried

vcg::tri::TriMesh< std::vector<MyVertex>, std::vector<MyFace> , std::vector<MyEdge>  > *t_mesh;
MyMesh vcgMesh =MyMesh::MyMesh(*t_mesh);

but compiler is copmplaining abou inaccesible element

Any help how to create it will be appreciated

EDIT1

private:
// TriMesh cannot be copied. Use Append (see vcg/complex/append.h)


TriMesh operator =(const TriMesh &  /*m*/){assert(0);return TriMesh();}
    TriMesh(const TriMesh & ){}

};  // end class Mesh

Answer 1

Because the given constructor and assignment operator are private, you can only use them within member functions of MyMesh or its friend classes. You get a compiler error because

MyMesh vcgMesh =MyMesh::MyMesh(*t_mesh);

is not in a member function of MyMesh or any of its friends.

You will need to make a public constructor or some factory class to solve your problem.

Answer 2

You can't call them outside of the class because you've made them private.

It sounds like you don't want to restrict access, so just make them public :

public:
    MyMesh(const TriMesh &mesh);
    MyMesh operator= (const TriMesh &mesh);

and provide an appropriate implementation.