*** empty log message ***

TODO

-$Id: TODO,v 1.55 2004-07-02 02:40:43 geuzaine Exp $
+$Id: TODO,v 1.56 2004-07-02 16:34:00 geuzaine Exp $
 
 add an interactive way to choose the orientation of surfaces in
 surface loops and lines in line loops
@@ -7,38 +7,6 @@ surface loops and lines in line loops
 gauche", and all surface loops whould be oriented with exterior
 normals...)
 
-********************************************************************
-
-We could modify "Extrude Surface" to *always* create a new
-volume. This would make it consistent with "Extrude Point" and
-"Extrude Line", which always create new curves and surfaces,
-respectively. (with multi-layered exruded meshes, we could do exactly
-s we do with Extrude Line: if number==0, use the volume number...)
-
-I'm not sure if we should do it or not... This would introduce
-some incompatibilities in old geo files:
-
-- users could do a "Delete Volume" after the extrusion to fix the
-  old files (aa[] = Extrude Surface{..};; Delete{Volume aa[1];}
-
-- ...if the new volume creation didn't bork the automatic 
-  numbering. For this, we could use the following hack:
-
-  // FIXME: this is a really ugly hack for backward compatibility, so
-  // that we don't screw up the old .geo files too much. (Before
-  // version 1.54, we didn't always create new volumes during "Extrude
-  // Surface". Now we do, but with "CTX.geom.old_newreg==1", this
-  // bumps the NEWREG() counter, and thus changes the whole automatic
-  // numbering sequence.) So we locally force old_newreg to 0: in most
-  // cases, since we define points, curves, etc., before defining
-  // volumes, the NEWVOLUME() call below will return a fairly low
-  // number, that will not interfere with the other numbers...
-  int tmp = CTX.geom.old_newreg;
-  CTX.geom.old_newreg = 0;
-  Volume *v = Create_Volume(NEWVOLUME(), 0);
-  CTX.geom.old_newreg = tmp;
-
-
 ********************************************************************
 
 add ternary operator and <,>,<=,>=,== tests in MathEval