[Bf-blender-cvs] [52f326ed484] master: Cleanup: add clarifying comment to ViewLayer->layer_collections

[Jacques Lucke]

Commit: 52f326ed4848e5ee48876ba81e210685dc7a1970
Author: Jacques Lucke
Date:   Thu Feb 13 16:33:39 2020 +0100
Branches: master
https://developer.blender.org/rB52f326ed4848e5ee48876ba81e210685dc7a1970

Cleanup: add clarifying comment to ViewLayer->layer_collections

===================================================================

M	source/blender/makesdna/DNA_layer_types.h

===================================================================

diff --git a/source/blender/makesdna/DNA_layer_types.h b/source/blender/makesdna/DNA_layer_types.h
index 4de98e0b684..7fc319b849a 100644
--- a/source/blender/makesdna/DNA_layer_types.h
+++ b/source/blender/makesdna/DNA_layer_types.h
@@ -87,7 +87,10 @@ typedef struct ViewLayer {
   /** Default allocated now. */
   struct SceneStats *stats;
   struct Base *basact;
-  /** LayerCollection. */
+
+  /** A view layer has one top level layer collection, because a scene has only one top level
+   * collection. The layer_collections list always contains a single element. ListBase is
+   * convenient when applying functions to all layer collections recursively. */
   ListBase layer_collections;
   LayerCollection *active_collection;