Multi-Object Editing

This adds initial multi-object editing support.

- Selected objects are used when entering edit & pose modes.
- Selection & tools work on all objects however many tools need porting
  See: T54641 for remaining tasks.

Indentation will be done separately.

See patch: D3101

1 files changed, 23 insertions, 0 deletions

diff --git a/source/blender/editors/undo/ed_undo.c b/source/blender/editors/undo/ed_undo.c
index d8b194e3336..0b77006afb7 100644
--- a/source/blender/editors/undo/ed_undo.c
+++ b/source/blender/editors/undo/ed_undo.c
@@ -36,6 +36,7 @@
 #include "CLG_log.h"
 
 #include "DNA_scene_types.h"
+#include "DNA_object_types.h"
 
 #include "BLI_utildefines.h"
 
@@ -46,6 +47,7 @@
 #include "BKE_global.h"
 #include "BKE_main.h"
 #include "BKE_screen.h"
+#include "BKE_layer.h"
 #include "BKE_undo_system.h"
 
 #include "ED_gpencil.h"
@@ -495,3 +497,24 @@ void ED_OT_undo_history(wmOperatorType *ot)
 }
 
 /** \} */
+
+/* -------------------------------------------------------------------- */
+/** \name Undo Helper Functions
+ * \{ */
+
+void ED_undo_object_set_active_or_warn(ViewLayer *view_layer, Object *ob, const char *info, CLG_LogRef *log)
+{
+	Object *ob_prev = OBACT(view_layer);
+	if (ob_prev != ob) {
+		Base *base = BKE_view_layer_base_find(view_layer, ob);
+		if (base != NULL) {
+			view_layer->basact = base;
+		}
+		else {
+			/* Should never fail, may not crash but can give odd behavior. */
+			CLOG_WARN(log, "'%s' failed to restore active object: '%s'", info, ob->id.name + 2);
+		}
+	}
+}
+
+/** \} */