glMatrixMode(GL_PROJECTION)
        glLoadIdentity()

        P = perspective(60, 1, .01, 20).transpose().getA()
        glMultMatrixf(P)

        glMatrixMode(GL_MODELVIEW)
        glLoadIdentity()

        V_up     = np.array([0, 1, 0])
        p_c      = np.array(movingCameraPos)
        p_lookup = np.array([0, 0, -(near+far)/2])
        N        = p_c - p_lookup

        x_c = np.cross(V_up, N)
        x_c = x_c / np.linalg.norm(x_c)
        z_c = N / np.linalg.norm(N)
        y_c = np.cross(z_c, x_c)

        R = np.eye(4)
        R[0][0:3] = x_c
        R[1][0:3] = y_c
        R[2][0:3] = z_c

        T = translate(p_c * -1)

        RT = (R * T).transpose().getA()
        glMultMatrixf(RT)

        drawScene()
        drawMovingViewVolume()