source file of the GNU LilyPond music typesetter
- (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
LY_DEFINE (ly_stencil_rotate, "ly:stencil-rotate",
4, 0, 0, (SCM stil, SCM angle, SCM x, SCM y),
"Return a stencil @var{stil} rotated @var{angle} degrees around"
- " point (@var{x}, @var{y}).")
+ " the relative offset (@var{x}, @var{y}). E.g. an offset of"
+ " (-1, 1) will rotate the stencil around the left upper corner.")
{
Stencil *s = unsmob_stencil (stil);
LY_ASSERT_SMOB (Stencil, stil, 1);
return new_s;
}
+LY_DEFINE (ly_stencil_rotate_absolute, "ly:stencil-rotate-absolute",
+ 4, 0, 0, (SCM stil, SCM angle, SCM x, SCM y),
+ "Return a stencil @var{stil} rotated @var{angle} degrees around"
+ " point (@var{x}, @var{y}), given in absolute coordinates.")
+{
+ Stencil *s = unsmob_stencil (stil);
+ LY_ASSERT_SMOB (Stencil, stil, 1);
+ LY_ASSERT_TYPE (scm_is_number, angle, 2);
+ LY_ASSERT_TYPE (scm_is_number, x, 3);
+ LY_ASSERT_TYPE (scm_is_number, y, 4);
+ Real a = scm_to_double (angle);
+ Real x_off = scm_to_double (x);
+ Real y_off = scm_to_double (y);
+
+ SCM new_s = s->smobbed_copy ();
+ Stencil *q = unsmob_stencil (new_s);
+ q->rotate_degrees_absolute (a, Offset (x_off, y_off));
+ return new_s;
+}
+
LY_DEFINE (ly_round_filled_box, "ly:round-filled-box",
3, 0, 0,
(SCM xext, SCM yext, SCM blot),
}
LY_DEFINE (ly_round_filled_polygon, "ly:round-filled-polygon",
- 2, 0, 0,
- (SCM points, SCM blot),
- "Make a @code{Stencil} object that prints a black polygon with "
- "corners at the points defined by @var{points} (list of coordinate "
- "pairs) and roundness @var{blot}.")
+ 2, 0, 0,
+ (SCM points, SCM blot),
+ "Make a @code{Stencil} object that prints a black polygon with"
+ " corners at the points defined by @var{points} (list of coordinate"
+ " pairs) and roundness @var{blot}.")
{
SCM_ASSERT_TYPE (scm_ilength (points) > 0, points, SCM_ARG1, __FUNCTION__, "list of coordinate pairs");
LY_ASSERT_TYPE (scm_is_number, blot, 2);