Cleanup: Rename original curve object type enum

This commit renames enums related the "Curve" object type and ID type
to add `_LEGACY` to the end. The idea is to make our aspirations clearer
in the code and to avoid ambiguities between `CURVE` and `CURVES`.

Ref T95355

To summarize for the record, the plans are:
- In the short/medium term, replace the `Curve` object data type with
 `Curves`
- In the longer term (no immediate plans), use a proper data block for
  3D text and surfaces.

Differential Revision: https://developer.blender.org/D14114

1 files changed, 4 insertions, 4 deletions

diff --git a/source/blender/editors/object/object_edit.c b/source/blender/editors/object/object_edit.c
index e4a026d3205..58594affc05 100644
--- a/source/blender/editors/object/object_edit.c
+++ b/source/blender/editors/object/object_edit.c
@@ -568,7 +568,7 @@ static bool ED_object_editmode_load_free_ex(Main *bmain,
      */
     DEG_relations_tag_update(bmain);
   }
-  else if (ELEM(obedit->type, OB_CURVE, OB_SURF)) {
+  else if (ELEM(obedit->type, OB_CURVES_LEGACY, OB_SURF)) {
     const Curve *cu = obedit->data;
     if (cu->editnurb == NULL) {
       return false;
@@ -799,7 +799,7 @@ bool ED_object_editmode_enter_ex(Main *bmain, Scene *scene, Object *ob, int flag
 
     WM_main_add_notifier(NC_SCENE | ND_MODE | NS_EDITMODE_LATTICE, scene);
   }
-  else if (ELEM(ob->type, OB_SURF, OB_CURVE)) {
+  else if (ELEM(ob->type, OB_SURF, OB_CURVES_LEGACY)) {
     ok = true;
     ED_curve_editnurb_make(ob);
 
@@ -1023,7 +1023,7 @@ void ED_object_check_force_modifiers(Main *bmain, Scene *scene, Object *object)
   if (!md) {
     if (pd && (pd->shape == PFIELD_SHAPE_SURFACE) &&
         !ELEM(pd->forcefield, 0, PFIELD_GUIDE, PFIELD_TEXTURE)) {
-      if (ELEM(object->type, OB_MESH, OB_SURF, OB_FONT, OB_CURVE)) {
+      if (ELEM(object->type, OB_MESH, OB_SURF, OB_FONT, OB_CURVES_LEGACY)) {
         ED_object_modifier_add(NULL, bmain, scene, object, NULL, eModifierType_Surface);
       }
     }
@@ -1552,7 +1552,7 @@ static int shade_smooth_exec(bContext *C, wmOperator *op)
       BKE_mesh_batch_cache_dirty_tag(ob->data, BKE_MESH_BATCH_DIRTY_ALL);
       changed = true;
     }
-    else if (ELEM(ob->type, OB_SURF, OB_CURVE)) {
+    else if (ELEM(ob->type, OB_SURF, OB_CURVES_LEGACY)) {
       BKE_curve_smooth_flag_set(ob->data, use_smooth);
       changed = true;
     }