cairoMatrixInvert           package:RGtk2           R Documentation

_c_a_i_r_o_M_a_t_r_i_x_I_n_v_e_r_t

_D_e_s_c_r_i_p_t_i_o_n:

     Changes 'matrix' to be the inverse of it's original value. Not all
     transformation matrices have inverses; if the matrix collapses
     points together (it is degenerate), then it has no inverse and
     this function will fail.

_U_s_a_g_e:

     cairoMatrixInvert(matrix)

_A_r_g_u_m_e_n_t_s:

'matrix': ['CairoMatrix']  a 'CairoMatrix'

_V_a_l_u_e:

     ['CairoStatus']  If 'matrix' has an inverse, modifies 'matrix' to
     be the inverse matrix and returns 'CAIRO_STATUS_SUCCESS'.
     Otherwise, returns 'CAIRO_STATUS_INVALID_MATRIX'.

_A_u_t_h_o_r(_s):

     Derived by RGtkGen from GTK+ documentation

