Provided by: libdrawtk-dev_1.0b-1_amd64 bug


       dtk_create_line - Create and modify line shape


       #include <drawtk.h>

       dtk_hshape dtk_create_line(dtk_hshape shp,
                       float x1, float y1, float x2, float y2,
                       const float *color);


       dtk_create_line() creates a line between the points (x1,y1) and (x2,y2).

       shp and color have the same usage and meaning as for other shape creation function:

        * shp  can  be  used  to modify a previously created shape. If it is non-null, the handle
          will be used to modify the shape referenced by shp: no new shape  is  created  and  the
          returned value is ensured to be shp in case of success, NULL otherwise. If shp is NULL,
          the function will attempt to create a new shape.

        * color should point to a 4 float array containing a normalized  RGBA  value  (i.e.  each
          component is between 0.0 and 1.0).


       In  case  of  success  these  functions return the handle to the newly created or modified
       shape. If the shp argument is non-null, the handle returned is the same value. In case  of
       error, NULL is returned.