Transfer Data: add main core code and operators.

This add code needed to map a CD data layout from source mesh towards destination one,
and code needed to actually transfer data, using BKE's mesh remap generated data.

This allows to transfer most CD layers (vgroups, vcols, uvs...) as well as fake, boolean ones
(like smooth/sharp edges/faces, etc.). Some types are not yet transferable, mainly
shape keys, this is known TODO.

Data transfer can also use some advanced mixing in some cases (mostly, vgroups and vcols).

Notes:
* New transfer operators transfer data from active object towards selected ones.
* Modifier will be committed separately.
* Old weight transfer code (for vgroups) is kept for now, mostly because it is the only
  usable one in weightpaint mode (it transfers from selected object to active one,
  this is not sensible in Object mode, but needed in WeightPaint one). This will be addressed soon.

Again, heavily reviewed and enhanced by Campbell, thanks!

1 files changed, 8 insertions, 0 deletions

diff --git a/source/blender/makesrna/RNA_enum_types.h b/source/blender/makesrna/RNA_enum_types.h
index 3d4ed0d6f51..4d836601ac4 100644
--- a/source/blender/makesrna/RNA_enum_types.h
+++ b/source/blender/makesrna/RNA_enum_types.h
@@ -184,6 +184,14 @@ extern EnumPropertyItem linestyle_geometry_modifier_type_items[];
 
 extern EnumPropertyItem window_cursor_items[];
 
+extern EnumPropertyItem DT_method_vertex_items[];
+extern EnumPropertyItem DT_method_edge_items[];
+extern EnumPropertyItem DT_method_loop_items[];
+extern EnumPropertyItem DT_method_poly_items[];
+extern EnumPropertyItem DT_mix_mode_items[];
+extern EnumPropertyItem DT_layers_select_src_items[];
+extern EnumPropertyItem DT_layers_select_dst_items[];
+
 struct bContext;
 struct PointerRNA;
 struct PropertyRNA;