NLA: Fix strip Sync Length moving animation data

Change the way Sync Length works so that it keeps keyframes at the same
key as before the sync. Now when the user exits tweak mode, the overall
NLA result is unchanged.

Reviewed By: sybren

Differential Revision: https://developer.blender.org/D7602

1 files changed, 1 insertions, 5 deletions

diff --git a/source/blender/editors/space_nla/nla_edit.c b/source/blender/editors/space_nla/nla_edit.c
index bc9bd0e18f2..dc8f616c5e6 100644
--- a/source/blender/editors/space_nla/nla_edit.c
+++ b/source/blender/editors/space_nla/nla_edit.c
@@ -1847,11 +1847,7 @@ static int nlaedit_sync_actlen_exec(bContext *C, wmOperator *op)
           continue;
         }
 
-        /* recalculate the length of the action */
-        calc_action_range(strip->act, &strip->actstart, &strip->actend, 0);
-
-        /* adjust the strip extents in response to this */
-        BKE_nlastrip_recalculate_bounds(strip);
+        BKE_nlastrip_recalculate_bounds_sync_action(strip);
 
         ale->update |= ANIM_UPDATE_DEPS;
       }