Unify all XYZ symmetry options using Mesh Symmetry

This adds XYZ symmetry as a property of meshes and updates all modes to
use the mesh symmetry by default to have a consistent tool behavior
between all modes and when switching objects.

Reviewed By: brecht, mano-wii, campbellbarton

Maniphest Tasks: T79785

Differential Revision: https://developer.blender.org/D8587

1 files changed, 9 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/versioning_290.c b/source/blender/blenloader/intern/versioning_290.c
index 1d4912db330..a8452887791 100644
--- a/source/blender/blenloader/intern/versioning_290.c
+++ b/source/blender/blenloader/intern/versioning_290.c
@@ -750,5 +750,14 @@ void blo_do_versions_290(FileData *fd, Library *UNUSED(lib), Main *bmain)
         }
       }
     }
+
+    /* Unify symmetry as a mesh property. */
+    if (!DNA_struct_elem_find(fd->filesdna, "Mesh", "char", "symmetry")) {
+      LISTBASE_FOREACH (Mesh *, mesh, &bmain->meshes) {
+        /* The previous flags used to store mesh symmery in edit mode match the new ones that are
+         * used in mesh->symmery. */
+        mesh->symmetry = mesh->editflag & (ME_SYMMETRY_X | ME_SYMMETRY_Y | ME_SYMMETRY_Z);
+      }
+    }
   }
 }