Provided by: libdrawtk-dev_2.0-2ubuntu1_amd64 bug


       dtk_create_arrow - Create and modify arrow shape


       #include <drawtk.h>

       dtk_hshape dtk_create_arrow(dtk_hshape shp,
                       float cx, float cy, float width, float height,
                       int filled, const float *color);


       dtk_create_arrow()  creates an arrow pointing to the left with the pointed pointed located
       at (cx,cy) with a total width of width, a hat of length width/3 , a total height of height
       and the width of the body being height/2.

       shp,  filled  and  color  have  the  same  usage  and  meaning as for other shape creation

        * 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.

        * filled  is  set  to  0 if the described shape should be a continuous line or a non-null
          value if the shape is supposed to be filled polygon.

        * 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.