proj_matrix = Matrix::ortho(left, right, bottom, top, clip_near, clip_far);
proj_matrix = Matrix::rotation(rotate, Vector3(0, 0, 1))*proj_matrix;
proj_matrix = Matrix::ortho(left, right, bottom, top, clip_near, clip_far);
proj_matrix = Matrix::rotation(rotate, Vector3(0, 0, 1))*proj_matrix;