public void generateMesh(int levels, bool addCollider = false)
    {
        gameObject.transform.position = Vector3.zero;

            MeshFilter meshFilter = gameObject.AddComponent(typeof(MeshFilter)) as MeshFilter;
            gameObject.AddComponent(typeof(MeshRenderer));

        List<Vector3> lvertices = new List<Vector3>();
        List<int> ltriangles = new List<int>();

        decomposeTriangles( lvertices, ltriangles);

            Mesh m = new Mesh();

            m.vertices = lvertices.ToArray();

            m.triangles = ltriangles.ToArray();
        m.Optimize();
            m.RecalculateNormals();
            m.RecalculateBounds();

            meshFilter.sharedMesh = m;

        if(addCollider) {
            gameObject.AddComponent<MeshCollider>().sharedMesh = m;
        }

    }