Geometry Nodes: Add the concept of an active modifier

This commit adds functions to set and get the object's active
modifier, which is stored as a flag in the ModifierData struct,
similar to constraints. This will be used to set the context in
the node editor. There are no visible changes in this commit.

1 files changed, 4 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_object.h b/source/blender/blenkernel/BKE_object.h
index 28c912a4c9a..a620d9af946 100644
--- a/source/blender/blenkernel/BKE_object.h
+++ b/source/blender/blenkernel/BKE_object.h
@@ -77,6 +77,10 @@ bool BKE_object_shaderfx_use_time(struct Object *ob, struct ShaderFxData *md);
 
 bool BKE_object_support_modifier_type_check(const struct Object *ob, int modifier_type);
 
+/* Active modifier. */
+void BKE_object_modifier_set_active(struct Object *ob, struct ModifierData *md);
+struct ModifierData *BKE_object_active_modifier(const struct Object *ob);
+
 bool BKE_object_copy_modifier(struct Object *ob_dst,
                               const struct Object *ob_src,
                               struct ModifierData *md);