al_draw_ribbon - Allegro 5 API

       Draws  a  ribbon  given  an  array  of points.  The ribbon will go through all of the passed points.  The
       points buffer should consist of regularly spaced doublets of floats, corresponding to x and y coordinates
       of the vertices.

       Parameters:

       • points - An array of coordinate pairs (x and y) for each point

       • points_stride - Distance (in bytes) between starts of successive pairs of  coordinates  in  the  points
         buffer

       • color - Color of the spline

       • thickness - Thickness of the spline, pass <= 0 to draw hairline spline

       • num_segments - The number of segments

       al_draw_ribbon - Allegro 5 API

al_calculate_ribbon(3alleg5)

Allegro reference manual                                                                 al_draw_ribbon(3alleg5)

              #include <allegro5/allegro_primitives.h>

              void al_draw_ribbon(const float *points, int points_stride, ALLEGRO_COLOR color,
                 float thickness, int num_segments)