Fetches the (X,Y) coordinates of a specified contour-point index
in the specified glyph ID in the specified font, with respect
to the origin in a text segment in the specified direction.
Calls the appropriate direction-specific variant (horizontal
or vertical) depending on the value of direction.
Fetches the (X,Y) coordinates of a specified contour-point index in the specified glyph ID in the specified font, with respect to the origin in a text segment in the specified direction.
Calls the appropriate direction-specific variant (horizontal or vertical) depending on the value of direction.