- added DerivedMesh.drawUVEdges function & implementations

 - removed DerivedMesh.drawLooseEdges and replaced with much more
   general drawEdgesFlag function that draws based edge flags.
 - switch DerivedMesh.drawFacesTex to give user control over which
   faces are drawn
 - added object_uvs_changed and object_tface_flags_changed functions
   to do object recalc flag flush/redraw queueing and added calls
   in appropriate places
 - added various edge flags to mark TFace information. This is used
   by the drawEdgesFlag routine and was the best way I could come
   up with to deal with drawing TFace information from modifier stack.
   Unfortunate side effects are (1) uses a lot of MEdge flags (although
   not needed in file so thats fine) and (2) requires recalculation
   of modifier stack on UV selection changes. #2 is disappointing
   but I could not find a better solution.
 - update UV mesh shadow drawing to use modifier result. At the moment
   just uses the final result but probably should be integrated with
   the editmode cage option.
 - convert draw_tfaces3D to use drawEdgesFlag routine which cleaned
   up the code quite a bit.
 - convert draw_tface_mesh to draw using result of modifier stack.
   Same comment about which result actually gets draw in FACESELECT
   mode as for UV editor shadow drawing applies.

There is a still a bug in that selection is using the wrong
mesh to draw.

1 files changed, 7 insertions, 4 deletions

diff --git a/source/blender/blenkernel/BKE_DerivedMesh.h b/source/blender/blenkernel/BKE_DerivedMesh.h
index f221391d6f0..99d438743fa 100644
--- a/source/blender/blenkernel/BKE_DerivedMesh.h
+++ b/source/blender/blenkernel/BKE_DerivedMesh.h
@@ -127,15 +127,18 @@ struct DerivedMesh {
 			/* Draw all vertices as bgl points (no options) */
 	void (*drawVerts)(DerivedMesh *dm);
 
+			/* Draw edges in the UV mesh (if exists) */
+	void (*drawUVEdges)(DerivedMesh *dm);
+
 			/* Draw all edges as lines (no options) 
 			 *
 			 * Also called for *final* editmode DerivedMeshes
 			 */
 	void (*drawEdges)(DerivedMesh *dm, int drawLooseEdges);
-			
-			/* Draw all edges without faces as lines (no options) */
-	void (*drawLooseEdges)(DerivedMesh *dm);
-			
+	
+			/* Draw all edges for which (med->flag&mask)==value */
+	void (*drawEdgesFlag)(DerivedMesh *dm, unsigned int mask, unsigned int value);
+
 			/* Draw all faces
 			 *  o Set face normal or vertex normal based on inherited face flag
 			 *  o Use inherited face material index to call setMaterial