X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fspring-smob.cc;h=f0e8a21f640eb9b9cab409395563f9fc1951abbc;hb=1d509b27723ea1c359b51c0f2fe623a32867d6f9;hp=5639a1cd0737446b8318f3c3a12b9712acc69007;hpb=deabe8e6c21ae6080e13b269bab24901f74a2254;p=lilypond.git

diff --git a/lily/spring-smob.cc b/lily/spring-smob.cc
index 5639a1cd07..f0e8a21f64 100644
--- a/lily/spring-smob.cc
+++ b/lily/spring-smob.cc
@@ -1,9 +1,20 @@
 /*
-  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--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
-  (c) 1999--2007 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"
@@ -13,10 +24,8 @@
 IMPLEMENT_SIMPLE_SMOBS (Spring);
 
 SCM
-Spring::mark_smob (SCM x)
+Spring::mark_smob (SCM)
 {
-  (void)x;
-
   return SCM_UNSPECIFIED;
 }
 
@@ -30,6 +39,44 @@ Spring::print_smob (SCM, SCM p, scm_print_state *)
 SCM
 Spring::equal_p (SCM a, SCM b)
 {
-  return a == b? SCM_BOOL_T : SCM_BOOL_F;
+  return 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.")
+{
+  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 ();
+}
+
+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}.")
+{
+  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 ();
+}
+
+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}.")
+{
+  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 ();
 }
 
+IMPLEMENT_TYPE_P (Spring, "ly:spring?");