- got rid of DerivedMesh.drawMappedEdgeEM function, can be implemented with

   drawMappedEdges
 - added DerivedMesh.convertToDispListMeshMapped function which converts and
   also returns mapping information for use in editmode
 - updated DispListMesh derivedmesh to be able to function in editmode
 - update mirror modifier to support use as a cage
 - update mirror & subsurf modifiers to properly pass mapping information down
   modifier stack

It is now possible to have a mesh with mirror/subsurf modifiers where you
can edit with both as cage. Selecting the mirror'd part works, but of course
transform is flipped so it is a bit weird. Not the cleanest code in the
world and I can't say I am really happy with the architecture but it works for
now and supports the existing feature set.

1 files changed, 4 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_subsurf.h b/source/blender/blenkernel/BKE_subsurf.h
index 925ef15288f..dbcc2dd3e17 100644
--- a/source/blender/blenkernel/BKE_subsurf.h
+++ b/source/blender/blenkernel/BKE_subsurf.h
@@ -35,9 +35,13 @@ struct Mesh;
 struct Object;
 struct DerivedMesh;
 struct EditMesh;
+struct EditVert;
+struct EditEdge;
+struct EditFace;
 struct SubsurfModifierData;
 
 struct DerivedMesh *subsurf_make_derived_from_editmesh(struct EditMesh *em, struct SubsurfModifierData *smd, float (*vertexCos)[3]);
+struct DerivedMesh *subsurf_make_derived_from_dlm_em(struct DispListMesh *dlm, struct SubsurfModifierData *smd, float (*vertCos)[3], struct EditVert **vertMap, struct EditEdge **edgeMap, struct EditFace **faceMap);
 struct DerivedMesh *subsurf_make_derived_from_mesh(struct Mesh *me, struct DispListMesh *dlm, struct SubsurfModifierData *smd, int useRenderParams, float (*vertCos)[3], int isFinalCalc);
 
 void subsurf_calculate_limit_positions(Mesh *me, float (*positions_r)[3]);