Re: Problem storing tvmet vector objects in an stl vector container

The following program demonstrates the problem:

#include <vector>
#include <iostream>
#include <tvmet/Vector.h>

typedef tvmet::Vector<double, 3> Vector3d;

class Mesh
{
public:
    Vector3d* addVertex(const Vector3d& tVertex);
private:
    std::vector<Vector3d> m_tVertices;
};

Vector3d* Mesh::addVertex(const Vector3d& tVertex)
{ m_tVertices.push_back(tVertex);
    return &m_tVertices.back();
}

int main()
{
    Mesh tMesh;
    Vector3d* pVertex0 = tMesh.addVertex(Vector3d(-1, 1, 1));
    std::cout << "Vertex0: " << (*pVertex0)(0) << ", " << (*pVertex0)
(1) << ", " << (*pVertex0)(2) << std::endl;
    Vector3d* pVertex1 = tMesh.addVertex(Vector3d( 1, 1, 1));
    std::cout << "Vertex0: " << (*pVertex0)(0) << ", " << (*pVertex0)
(1) << ", " << (*pVertex0)(2) << std::endl;
    std::cout << "Vertex1: " << (*pVertex1)(0) << ", " << (*pVertex1)
(1) << ", " << (*pVertex1)(2) << std::endl;
    return 0;
}

Which gives the following output:

Vertex0: -1, 1, 1
Vertex0: 0, 1, 1
Vertex1: 1, 1, 1

Instead of the expected output:

Vertex0: -1, 1, 1
Vertex0: -1, 1, 1
Vertex1: 1, 1, 1

It is interesting to note that the code behaves correctly if an stl
list is used instead. I can't work out why this is not working, and it
seems like such a trivial program! Could anyone explain to me what is
wrong?