public List<Vector3> getVertexList()
{
    List<Vector3> result = new List<Vector3>();
    Vector3[] resultarr = new Vector3[m_vertices.Keys.Count];
    foreach (KeyValuePair<Vertex, int> kvp in m_vertices)
    {
         Vertex v = kvp.Key;
         int i = kvp.Value;
         resultarr[i] = new Vector3(v.X, v.Y, v.Z);
                
     }
     return new List<Vector3>(resultarr);
            
}