NAME

       dtk_create_arrow - Create and modify arrow shape

SYNOPSIS

       #include <drawtk.h>

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

DESCRIPTION

       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 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.

        * 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).

RETURN VALUE

       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.

SEE ALSO

       dtk_destroy_shape(3)

EPFL                                                  2011                                   DTK_CREATE_ARROW(3)