From: Joe Neeman <joeneeman@gmail.com>
Date: Sat, 7 Jul 2007 02:14:44 +0000 (+1000)
Subject: try to avoid NaNs and infs in alignment and pure-height
X-Git-Tag: release/2.11.28-1~26
X-Git-Url: https://git.donarmstrong.com/?a=commitdiff_plain;h=cbf152f9dbdadd9af8b4c3bbbba0e5e0ce5b0fec;p=lilypond.git

try to avoid NaNs and infs in alignment and pure-height
---

diff --git a/lily/align-interface.cc b/lily/align-interface.cc
index 4d885b7a38..db71c32b8f 100644
--- a/lily/align-interface.cc
+++ b/lily/align-interface.cc
@@ -221,6 +221,9 @@ Align_interface::get_extents_aligned_translates (Grob *me,
 	  dy = down_skyline.distance (skylines[j][-stacking_dir]);
 	}
 
+      if (isinf (dy)) /* if the skyline is empty, maybe max_height is infinity_f */
+	dy = 0.0;
+
       dy = max (0.0, dy + padding + extra_space / elems.size ());
       down_skyline.raise (-stacking_dir * dy);
       where += stacking_dir * dy;
diff --git a/lily/grob.cc b/lily/grob.cc
index 495fe2437f..5962b9ff66 100644
--- a/lily/grob.cc
+++ b/lily/grob.cc
@@ -433,7 +433,8 @@ Grob::pure_height (Grob *refp, int start, int end)
   if (!iv.is_empty () && is_number_pair (min_ext))
     iv.unite (ly_scm2interval (min_ext));
 
-  iv.translate (offset);
+  if (!iv.is_empty ())
+    iv.translate (offset);
   return iv;
 }