Provided by: allegro5-doc_5.0.10-2_all bug


       al_calculate_ribbon - Allegro 5 API


              #include <allegro5/allegro_primitives.h>

              void al_calculate_ribbon(float* dest, int dest_stride, const float *points,
                 int points_stride, float thickness, int num_segments)


       Calculates  a  ribbon  given  an  array  of points.  The ribbon will go through all of the
       passed points.  If thickness <= 0,  then  num_segments  of  points  are  required  in  the
       destination  buffer,  otherwise  twice as many are needed.  The destination and the points
       buffer should consist of regularly spaced doublets of floats, corresponding  to  x  and  y
       coordinates of the vertices.


       · dest - Pointer to the destination buffer

       · dest_stride  -  Distance (in bytes) between starts of successive pairs of coordinates in
         the destination buffer

       · points - An array of pairs of coordinates for each point

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

       · thickness - Thickness of the spline ribbon

       · num_segments - The number of points to calculate


       al_draw_ribbon(3alleg5), al_calculate_arc(3alleg5), al_calculate_spline(3alleg5)