/*
- spring.cc -- implement Spring
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1999--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1999--2008 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 "spring.hh"
#include "warn.hh"
-#include "ly-smobs.icc"
-IMPLEMENT_SIMPLE_SMOBS (Spring);
+
+
SCM
-Spring::mark_smob (SCM)
+Spring::equal_p (SCM a, SCM b)
+{
+ // TODO SCM: This could be made simpler.
+ return scm_is_eq (a, b) ? SCM_BOOL_T : SCM_BOOL_F;
+}
+
+LY_DEFINE (ly_make_spring, "ly:make-spring",
+ 2, 0, 0, (SCM ideal, SCM min_dist),
+ "Make a spring. @var{ideal} is the ideal distance of the"
+ " spring, and @var{min-dist} is the minimum distance.")
{
- return SCM_UNSPECIFIED;
+ LY_ASSERT_TYPE (scm_is_number, ideal, 1);
+ LY_ASSERT_TYPE (scm_is_number, min_dist, 2);
+
+ Spring s (scm_to_double (ideal), scm_to_double (min_dist));
+
+ return s.smobbed_copy ();
}
-int
-Spring::print_smob (SCM, SCM p, scm_print_state *)
+LY_DEFINE (ly_spring_set_inverse_compress_strength_x, "ly:spring-set-inverse-compress-strength!",
+ 2, 0, 0, (SCM spring, SCM strength),
+ "Set the inverse compress @var{strength} of @var{spring}.")
{
- scm_puts ("#<Spring smob>", p);
- return 1;
+ LY_ASSERT_SMOB (Spring, spring, 1);
+ LY_ASSERT_TYPE (scm_is_number, strength, 2);
+
+ Spring *s = unsmob<Spring> (spring);
+ s->set_inverse_compress_strength (scm_to_double (strength));
+ return s->smobbed_copy ();
}
-SCM
-Spring::equal_p (SCM a, SCM b)
+LY_DEFINE (ly_spring_set_inverse_stretch_strength_x, "ly:spring-set-inverse-stretch-strength!",
+ 2, 0, 0, (SCM spring, SCM strength),
+ "Set the inverse stretch @var{strength} of @var{spring}.")
{
- return a == b? SCM_BOOL_T : SCM_BOOL_F;
+ LY_ASSERT_SMOB (Spring, spring, 1);
+ LY_ASSERT_TYPE (scm_is_number, strength, 2);
+
+ Spring *s = unsmob<Spring> (spring);
+ s->set_inverse_stretch_strength (scm_to_double (strength));
+ return s->smobbed_copy ();
}
+const char * const Spring::type_p_name_ = "ly:spring?";