1DTK_CREATE_ARROW(3)           Draw Toolkit manual          DTK_CREATE_ARROW(3)
2
3
4

NAME

6       dtk_create_arrow - Create and modify arrow shape
7

SYNOPSIS

9       #include <drawtk.h>
10
11       dtk_hshape dtk_create_arrow(dtk_hshape shp,
12                       float cx, float cy, float width, float height,
13                       int filled, const float *color);
14

DESCRIPTION

16       dtk_create_arrow()  creates  an  arrow  pointing  to  the left with the
17       pointed pointed located at (cx,cy) with a total width of width,  a  hat
18       of  length width/3 , a total height of height and the width of the body
19       being height/2.
20
21       shp, filled and color have the same usage  and  meaning  as  for  other
22       shape creation function:
23
24        * shp  can be used to modify a previously created shape. If it is non-
25          null, the handle will be used to modify the shape referenced by shp:
26          no  new shape is created and the returned value is ensured to be shp
27          in case of success, NULL otherwise. If shp  is  NULL,  the  function
28          will attempt to create a new shape.
29
30        * filled  is  set  to  0 if the described shape should be a continuous
31          line or a non-null value if the shape is supposed to be filled poly‐
32          gon.
33
34        * color  should  point to a 4 float array containing a normalized RGBA
35          value (i.e. each component is between 0.0 and 1.0).
36

RETURN VALUE

38       In case of success these functions return the handle to the newly  cre‐
39       ated  or  modified  shape.  If the shp argument is non-null, the handle
40       returned is the same value. In case of error, NULL is returned.
41

SEE ALSO

43       dtk_destroy_shape(3)
44
45
46
47
48
49EPFL                                 2011                  DTK_CREATE_ARROW(3)
Impressum