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


       dtk_create_triangle - Create and modify triangle shape


       #include <drawtk.h>

       dtk_hshape dtk_create_triangle(dtk_hshape shp,
                       float x1, float y1,
                       float x2, float y2,
                       float x3, float y3,
                       int filled, const float *color);


       dtk_create_triangle()  creates  a  triangle  between  the  vertices  (x1,y1),  (x2,y2) and

       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  continous  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.