cairoPatternCreateRadial        package:RGtk2        R Documentation

_c_a_i_r_o_P_a_t_t_e_r_n_C_r_e_a_t_e_R_a_d_i_a_l

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

     Creates a new radial gradient cairo_pattern_t between the two
     circles defined by (x0, y0, c0) and (x1, y1, c0).  Before using
     the gradient pattern, a number of color stops should be defined
     using 'cairoPatternAddColorStopRgb' or
     'cairoPatternAddColorStopRgba'.

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

     cairoPatternCreateRadial(cx0, cy0, radius0, cx1, cy1, radius1)

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

   'cx0': [numeric]  x coordinate for the center of the start circle

   'cy0': [numeric]  y coordinate for the center of the start circle

'radius0': [numeric]  radius of the start cirle

   'cx1': [numeric]  x coordinate for the center of the end circle

   'cy1': [numeric]  y coordinate for the center of the end circle

'radius1': [numeric]  radius of the end cirle

_D_e_t_a_i_l_s:

     Note: The coordinates here are in pattern space. For a new
     pattern, pattern space is identical to user space, but the
     relationship between the spaces can be changed with
     'cairoPatternSetMatrix'.

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

     ['CairoPattern']  the newly created 'CairoPattern' if succesful,
     or an error pattern in case of no memory.  The caller owns the
     returned object and should call 'cairo\Pattern\Destroy()' when
     finished with it.

     This function will always return a valid pointer, but if an error
     occurred the pattern status will be set to an error.  To inspect
     the status of a pattern use 'cairoPatternStatus'.

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

     Derived by RGtkGen from GTK+ documentation

