/*
- paper-system-scheme.cc -- implement Paper_system bindings
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2008--2015 Han-Wen Nienhuys <hanwen@lilypond.org>
- (c) 2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
+
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
-#include "paper-system.hh"
+#include "prob.hh"
-LY_DEFINE (ly_paper_system_set_property_x, "ly:paper-system-set-property!",
- 2, 1, 0, (SCM system, SCM sym, SCM value),
- "Set property @var{sym} of @var{system} to @var{value}")
-{
- Paper_system *ps = unsmob_paper_system (system);
- SCM_ASSERT_TYPE (ps, system, SCM_ARG1, __FUNCTION__, "paper-system");
+#include "skyline-pair.hh"
- ps->internal_set_property (sym, value);
- return SCM_UNSPECIFIED;
+LY_DEFINE (ly_paper_system_p, "ly:paper-system?",
+ 1, 0, 0, (SCM obj),
+ "Is @var{obj} a C++ @code{Prob} object of type"
+ " @code{paper-system}?")
+{
+ return ly_prob_type_p (obj, ly_symbol2scm ("paper-system"));
}
-LY_DEFINE (ly_paper_system_property, "ly:paper-system-property",
- 2, 1, 0, (SCM system, SCM sym, SCM dfault),
- "Return the value for @var{sym}. Properties may be set by "
- "setting the @code{line-break-system-details} property of "
- "NonMusicalPaperColumn. If the property is not found, "
- "return @var{dfault}, "
- "or @code{'()} if undefined.")
+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.")
{
- Paper_system *ps = unsmob_paper_system (system);
- SCM_ASSERT_TYPE (ps, system, SCM_ARG1, __FUNCTION__, "paper-system");
- if (dfault == SCM_UNDEFINED)
- dfault = SCM_EOL;
-
- SCM retval = ps->internal_get_property (sym);
- if (retval == SCM_EOL)
- return dfault;
+ Real ret = 0;
+ Prob *p1 = unsmob<Prob> (sys1);
+ Prob *p2 = unsmob<Prob> (sys2);
+ Skyline_pair *sky1 = unsmob<Skyline_pair> (p1->get_property ("vertical-skylines"));
+ Skyline_pair *sky2 = unsmob<Skyline_pair> (p2->get_property ("vertical-skylines"));
+
+ if (sky1 && sky2)
+ ret = (*sky1)[DOWN].distance ((*sky2)[UP]);
else
- return retval;
+ {
+ 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);
}
-
-