source file of the GNU LilyPond music typesetter
- (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ (c) 2005--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "prob.hh"
+#include "skyline.hh"
LY_DEFINE (ly_prob_set_property_x, "ly:prob-set-property!",
2, 1, 0, (SCM obj, SCM sym, SCM value),
SCM_ASSERT_TYPE (ps, obj, SCM_ARG1, __FUNCTION__, "Prob");
SCM_ASSERT_TYPE (scm_is_symbol (sym), sym, SCM_ARG2, __FUNCTION__, "symbol");
- ps->internal_set_property (sym, value);
+ ps->set_property (sym, value);
return SCM_UNSPECIFIED;
}
SCM sym = scm_car (s);
SCM val = scm_cadr (s);
- pr->internal_set_property (sym, val);
+ pr->set_property (sym, val);
}
return pr->unprotect ();
{
return ly_prob_type_p (obj, ly_symbol2scm ("paper-system"));
}
+
+LY_DEFINE (ly_paper_system_minimum_distance, "ly:paper-system-minimum-distance",
+ 2, 0, 0, (SCM sys1, SCM sys2),
+ "Measure the minimum distance between these two paper-systems "
+ "using their stored skylines if possible and falling back to "
+ "their extents otherwise.")
+{
+ Real ret = 0;
+ Prob *p1 = unsmob_prob (sys1);
+ Prob *p2 = unsmob_prob (sys2);
+ Skyline_pair *sky1 = Skyline_pair::unsmob (p1->get_property ("skylines"));
+ Skyline_pair *sky2 = Skyline_pair::unsmob (p2->get_property ("skylines"));
+
+ if (sky1 && sky2)
+ ret = (*sky1)[DOWN].distance ((*sky2)[UP]);
+ else
+ {
+ Stencil *s1 = unsmob_stencil (p1->get_property ("stencil"));
+ Stencil *s2 = unsmob_stencil (p2->get_property ("stencil"));
+ Interval iv1 = s1->extent (Y_AXIS);
+ Interval iv2 = s2->extent (Y_AXIS);
+ ret = iv2[UP] - iv1[DOWN];
+ }
+ return scm_from_double (ret);
+}