A virtual method for the #hb_paint_funcs_t to paint a radial
gradient everywhere within the current clip.
The color_line object contains information about the colors of the gradients.
It is only valid for the duration of the callback, you cannot keep it around.
The coordinates of the points are interpreted according
to the current transform.
See the OpenType spec COLR
section for details on how the points define the direction
of the gradient, and how to interpret the color_line.
A virtual method for the #hb_paint_funcs_t to paint a radial gradient everywhere within the current clip.
The color_line object contains information about the colors of the gradients. It is only valid for the duration of the callback, you cannot keep it around.
The coordinates of the points are interpreted according to the current transform.
See the OpenType spec COLR section for details on how the points define the direction of the gradient, and how to interpret the color_line.