X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fspring-smob.cc;h=19a5eef4c5ff87ffc4fc18a84f2f0af14fce3286;hb=926115ff42def8bc1ce767029e4f03c8072994ba;hp=b3697549cdf0d1a711523bd2e7a63b9262baf0d5;hpb=2c22efe5a46a37065b10c3f51c5d7db00d07d318;p=lilypond.git

diff --git a/lily/spring-smob.cc b/lily/spring-smob.cc
index b3697549cd..19a5eef4c5 100644
--- a/lily/spring-smob.cc
+++ b/lily/spring-smob.cc
@@ -1,43 +1,70 @@
 /*
-  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--2005 Han-Wen Nienhuys <hanwen@cs.uu.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"
 
-Spring_smob::Spring_smob ()
-{
-  distance_ = 0.;
-  inverse_strength_ = 1.0;
-  expand_only_b_ = false;
-  other_ = 0;
-}
 
-IMPLEMENT_SIMPLE_SMOBS (Spring_smob);
+
 
 SCM
-Spring_smob::mark_smob (SCM x)
+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.")
 {
-  (void)x;
+  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 SCM_UNSPECIFIED;
+  return s.smobbed_copy ();
 }
 
-int
-Spring_smob::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_smob::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?";