void create_model_indices(LaserDataSceneNode node, ushort sides, ushort slices)
        {
            // crear los indices
            MeshBuffer mbuffer = node.get_mesh_buffer();

            //uint ind_count =(uint)( (slices - 1) * (sides - 1) * 12);
            uint ind_count = (uint)((slices - 1) * (sides - 1) * 6);

            mbuffer.AllocateIndices(ind_count);


            m_buffer_index = 0;
            for (ushort i = 0; i < slices - 1; i++)
            {
                for (ushort j = 0; j < sides - 1; j++)
                {
                    //first triangle
                    mbuffer.SetIndex(m_buffer_index, (ushort)((i + 1) * sides + j));
                    m_buffer_index++;
                    mbuffer.SetIndex(m_buffer_index, (ushort)(i * sides + j));
                    m_buffer_index++;
                    mbuffer.SetIndex(m_buffer_index, (ushort)((i + 1) * sides + j + 1));
                    m_buffer_index++;
                    //second triangle
                    mbuffer.SetIndex(m_buffer_index, (ushort)((i + 1) * sides + j + 1));
                    m_buffer_index++;
                    mbuffer.SetIndex(m_buffer_index, (ushort)(i * sides + j));
                    m_buffer_index++;
                    mbuffer.SetIndex(m_buffer_index, (ushort)(i * sides + j + 1));
                    m_buffer_index++;

                    /*
                     * //third triangle
                     * mbuffer.SetIndex(m_buffer_index, (ushort)((i + 1) * sides + j));
                     * m_buffer_index++;
                     * mbuffer.SetIndex(m_buffer_index, (ushort)(i * sides + j));
                     * m_buffer_index++;
                     * mbuffer.SetIndex(m_buffer_index, (ushort)((i + 1) * sides + j + 1));
                     * m_buffer_index++;
                     *
                     * //fourth triangle
                     * mbuffer.SetIndex(m_buffer_index, (ushort)((i + 1) * sides + j + 1));
                     * m_buffer_index++;
                     * mbuffer.SetIndex(m_buffer_index, (ushort)(i * sides + j));
                     * m_buffer_index++;
                     * mbuffer.SetIndex(m_buffer_index, (ushort)(i * sides + j + 1));
                     * m_buffer_index++;*/
                }
            }
        }