Non-uniform blocks

I use the following macro to 'flatten' 2D drawings (I find it less
destructive than the built in routine):

^C^Cm;all;;0,0,0;0,0,-10E99;^C^Cm;all;;0,0,-10E99;0,0,0;

It works very well, placing block insertion points as well as all
other objects (except objects within blocks) on z=0.

However, it also reduces the z-scale of blocks to 0. This is bad
because then the blocks are non-uniformly scaled and cannot therefore
be edited without their properties first being manually altered to z=1
(or whatever).

Is there an obvious solution to this problem?

 

2D drawings flattend for what use? Flatshot command?

Bob

 

Sometimes, either when working with a combination of 3D and 2D data in
one drawing or when using 3d survey data, polylines can end up on
something other than z=0. I use this routine to correct that. In
ACAD2008, this has the unfortunate side effect of changing the z-scale
of blocks to z=0 as well. I'd just like to avoid that.

 

I guess there are no other way, than to explode the blocks and before
that, save the block's sale factor. A block inserted at Z=0 can
contain entities on various Z . I came around that problem by using
the entity scale factor cought by Entget --- The block entity contain
that information, and it is possible to store that list , say (1.2.3)
meaning a xyz scale factor of one for the x 2 for the Y and 3 for the
Z, then Mapcar * that with the point information you can take from
each subentity after it is exploded , and that way insert each entity,
as a new one but with the block scale factor.
----- A sort of explode nessery in case a block contained several
uneven scaled entities, that othervise was just exploded into the
original 1.1.1 scale factor.

 

Per, very involved answer. Not sure how it pertains to my problem
however!

That aside, I should add that the behaviour I've described is
different to that of previous versions of AutoCAD (at least as far as
I can remember). In other words if I used that same macro in an older
version of AutoCAD, it would retain the block's z-scale factor.