NAME

       dtk_create_triangle - Create and modify triangle shape

SYNOPSIS

       #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);

DESCRIPTION

       dtk_create_triangle() creates a triangle between the vertices (x1,y1), (x2,y2) and (x3,y3).

       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)