diff options
Diffstat (limited to 'source/blender/blenkernel/intern/group.c')
| -rw-r--r-- | source/blender/blenkernel/intern/group.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/group.c b/source/blender/blenkernel/intern/group.c index 6ea6bafaa14..ae3ab833a87 100644 --- a/source/blender/blenkernel/intern/group.c +++ b/source/blender/blenkernel/intern/group.c @@ -149,6 +149,10 @@ Group *BKE_group_copy(Group *group) groupn = BKE_libblock_copy(&group->id); BLI_duplicatelist(&groupn->gobject, &group->gobject); + if (group->id.lib) { + BKE_id_lib_local_paths(G.main, group->id.lib, &groupn->id); + } + return groupn; } @@ -215,6 +219,43 @@ static int group_object_unlink_internal(Group *group, Object *ob) return removed; } +static bool group_object_cyclic_check_internal(Object *object, Group *group) +{ + if (object->dup_group) { + Group *dup_group = object->dup_group; + if ((dup_group->id.flag & LIB_DOIT) == 0) { + /* Cycle already exists in groups, let's prevent further crappyness */ + return true; + } + /* flag the object to identify cyclic dependencies in further dupli groups */ + dup_group->id.flag &= ~LIB_DOIT; + + if (dup_group == group) + return true; + else { + GroupObject *gob; + for (gob = dup_group->gobject.first; gob; gob = gob->next) { + if (group_object_cyclic_check_internal(gob->ob, group)) { + return true; + } + } + } + + /* un-flag the object, it's allowed to have the same group multiple times in parallel */ + dup_group->id.flag |= LIB_DOIT; + } + + return false; +} + +bool BKE_group_object_cyclic_check(Main *bmain, Object *object, Group *group) +{ + /* first flag all groups */ + BKE_main_id_tag_listbase(&bmain->group, true); + + return group_object_cyclic_check_internal(object, group); +} + bool BKE_group_object_unlink(Group *group, Object *object, Scene *scene, Base *base) { if (group_object_unlink_internal(group, object)) { |