Here's one that only does points, lines, arcs, circles, text,
lwpolylines and inserts, and another (attached) by Mark Middlebrook that
may be more comprehensive...
; FLT.lsp - Changes elevation of selected lines & arcs
;
; Written by: Randy Benson
; November, 1992
; Added text, inserts April, 1997
; Added LWPolylines Jan, 1999
(princ "\nLoading FLT - Changes ELEVATION of selected lines/arcs...")
(defun err (s)
(if (not (member s '("console break" "function cancelled")))
(princ (strcat "\nError: " s))
)
(command "UNDO" "E")
(setvar "CMDECHO" oldcmd)
(setq *error* olderr)
(princ)
)
(defun C:FLT (/ p newelv cnt n en ed typ oldelv new10 new11)
(setq olderr *error* *error* err)
(setq oldcmd (getvar "CMDECHO"))
(setvar "CMDECHO" 0)
(setq p (ssget)) ; Get selection set
(if p
(progn
(setq newelv (atof (getstring "\nEnter the new elevation: <0.0>")))
(if (null newelv)
(setq newelv 0.0)
);if
(setq cnt 0)
(while (< cnt (sslength p))
(setq en (ssname p cnt)
ed (entget en)
typ (cdr (assoc 0 ed))
)
(cond (
(= "LINE" typ)
(setq oldelv (cadddr (assoc 10 ed))
new10 (subst newelv oldelv (assoc 10 ed))
oldelv (cadddr (assoc 11 ed))
new11 (subst newelv oldelv (assoc 11 ed))
ed (subst new10 (assoc 10 ed) ed)
ed (subst new11 (assoc 11 ed) ed)
ed (entmod ed)
)
)
(
(or (= "CIRCLE" typ)
(= "ARC" typ)
(= "TEXT" typ)
(= "INSERT" typ)
(= "POINT" typ)
)
(setq oldelv (assoc 10 ed)
px (cadr oldelv)
py (caddr oldelv)
lst (list 10 px py newelv)
ed (subst lst (assoc 10 ed) ed)
ed (entmod ed)
)
)
(
(= "LWPOLYLINE" typ)
(setq oldelv (cdr (assoc 38 ed))
ed (subst (cons 38 newelv) (assoc 38 ed) ed)
ed (entmod ed)
)
)
(T (princ "\nNot a point, insert, text, line, lwpolyline,
arc or circle -- Changed nothing."))
);cond
(setq cnt (1+ cnt))
);while
);progn
);if p
(princ (strcat "\nChanged " (itoa cnt) " entities."))
(setq *error* olderr)
(setvar "CMDECHO" oldcmd)
(princ)
)
oro^^ wrote:
> i have a small express tools menu and i have no tools/flatten.. don't use AutoCAD so much lately (infact, didn't upgrade to latest rel) and my A2000 can't change Z prop on a multiple selection.. that's the reason why i've asked for this tool i remember.. if i'm not wrong it was a LSP and directly downloaded from adesk public ftp years ago (maybe it's about the same express tool implemented on express tools menu).
>
> maybe i'll check on some old archive CDs :o)
;;; FLATTEN.LSP version 2k.01f, 14-Jul-2000
;;;
;;; FLATTEN sets the Z-coordinates of these types of objects to 0
;;; in the World Coordinate System:
;;; "3DFACE" "ARC" "ATTDEF" "CIRCLE" "DIMENSION"
;;; "ELLIPSE" "HATCH" "INSERT" "LINE" "LWPOLYLINE"
;;; "MTEXT" "POINT" "POLYLINE" "SOLID" "TEXT"
;;;
;;;-----------------------------------------------------------------------
;;; copyright 1990-2000 by Mark Middlebrook
;;; Daedalus Consulting
;;; e-mail: mark@markcad.com
;;;
;;; Before you e-mail me with support questions, please make sure that
;;; you're using the current version. You can download it from
;;; http://markcad.com.
;;;
;;; This program is free software. You can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation: http://www.gnu.org/copyleft/gpl.html.
;;;
;;; Thanks to Vladimir Livshiz for improvements in polyline handling
;;; and the addition of several other object types.
;;;
;;;-----------------------------------------------------------------------
;;; Revision history
;;; v. 2k.0 25-May-1999 First release for AutoCAD 2000.
;;; v. 2k.01 25-Jun-1999 Fixed two globalization bugs ("_World" & "_X")
;;; and revised error handler.
;;; v. 2k.01f 14-Jul-1999 Added GNU GPL and download info to header.
;;;
;;;-----------------------------------------------------------------------
;;;*Why Use FLATTEN?
;;;
;;; FLATTENing is useful in at least two situations:
;;; 1) You receive a DXF file created by another CAD program and discover
;;; that all the Z coordinates contain small round-off errors. These
;;; round-off errors can prevent you from object snapping to
;;; intersections and make your life difficult in other ways as well.
;;; 2) In a supposedly 2D drawing, you accidentally create one object with
;;; a Z elevation and end up with a drawing containing objects partly
;;; in and partly outside the Z=0 X-Y plane. As with the round-off
;;; problem, this situation can make object snaps and other procedures
;;; difficult.
;;;
;;; Warning: FLATTEN is not for flattening the custom objects created by
;;; applications such as Autodesk's Architectural Desktop. ADT and similar
;;; programs create "application-defined objects" that only the
;;; application really knows what to do with. FLATTEN has no idea how
;;; to handle application-defined objects, so it leaves them alone.
;;;
;;;-----------------------------------------------------------------------
;;;*How to Use FLATTEN
;;;
;;; This version of FLATTEN works with AutoCAD R12 through 2000.
;;;
;;; To run FLATTEN, load it using AutoCAD's APPLOAD command, or type:
;;; (load "FLATTEN")
;;; at the AutoCAD command prompt. Once you've loaded FLATTEN.LSP, type:
;;; FLATTEN
;;; to run it. FLATTEN will tell you what it's about to do and ask you
;;; to confirm that you really want to flatten objects in the current
;;; drawing. If you choose to proceed, FLATTEN prompts you to select objects
;;; to be flattened (press ENTER to flatten all objects in the drawing).
;;; After you've selected objects and pressed ENTER, FLATTEN goes to work.
;;; It reports the number of objects it flattens and the number left
;;; unflattenened (because they were objects not recognized by FLATTEN; see
;;; the list of supported objects above).
;;;
;;; If you don't like the results, just type U to undo FLATTEN's work.
;;;
;;;-----------------------------------------------------------------------
;;;*Known limitations
;;; 1) FLATTEN doesn't support all of AutoCAD's object types. See above
;;; for a list of the object types that it does work on.
;;; 2) FLATTEN doesn't flatten objects nested inside of blocks.
;;; (You can explode blocks before flattening. Alternatively, you can
;;; WBLOCK block definitions to separate DWG files, run FLATTEN in
;;; each of them, and then use INSERT in the parent drawing to update
;;; the block definitions. Neither of these methods will flatten
;;; existing attributes, though.
;;; 3) FLATTEN flattens objects onto the Z=0 X-Y plane in AutoCAD's
;;; World Coordinate System (WCS). It doesn't currently support
;;; flattening onto other UCS planes.
;;;
;;;=======================================================================
(defun C:FLATTEN (/ tmpucs olderr oldcmd zeroz ss1 ss1len
i numchg numnot numno0 ssno0 ename elist
etype yorn vrt crz
)
(setq tmpucs "$FLATTEN-TEMP$") ;temporary UCS
;;Error handler
(setq olderr *error*)
(defun *error* (msg)
(if (or
(= msg "Function cancelled")
(= msg "quit / exit abort")
)
;;if user cancelled or program aborted, exit quietly
(princ)
;;otherwise report error message
(princ (strcat "\nError: " msg))
)
(setq *error* olderr)
(if (tblsearch "UCS" tmpucs)
(command "._UCS" "_Restore" tmpucs "._UCS" "_Delete" tmpucs)
)
(command "._UNDO" "_End")
(setvar "CMDECHO" oldcmd)
(princ)
)
;;Function to change Z coordinate to 0
(defun zeroz (key zelist / oplist nplist)
(setq oplist (assoc key zelist)
nplist (reverse (append '(0.0) (cdr (reverse oplist))))
zelist (subst nplist oplist zelist)
)
(entmod zelist)
)
;;Setup
(setq oldcmd (getvar "CMDECHO"))
(setvar "CMDECHO" 0)
(command "._UNDO" "_Group")
;;LCA - COMMENT: The UCS command has new options.
(command "._UCS" "_Delete" tmpucs "._UCS" "_Save" tmpucs "._UCS" "_World")
;set World UCS
;;Get input
(prompt
(strcat
"\nFLATTEN sets the Z coordinates of most objects to zero."
)
)
(initget "Yes No")
(setq yorn (getkword "\nDo you want to continue : "))
(cond ((/= yorn "No")
(graphscr)
(prompt "\nChoose objects to FLATTEN ")
(prompt
"[press return to select all objects in the drawing]"
)
(setq ss1 (ssget))
(if (null ss1) ;if enter...
(setq ss1 (ssget "_X")) ;select all entities in database
)
;;*initialize variables
(setq ss1len (sslength ss1) ;length of selection set
i 0 ;loop counter
numchg 0 ;number changed counter
numnot 0 ;number not changed counter
numno0 0 ;number not changed and Z /= 0 counter
ssno0 (ssadd) ;selection set of unchanged entities
) ;setq
;;*do the work
(prompt "\nWorking.")
(while (< i ss1len) ;while more members in the SS
(if (= 0 (rem i 10))
(prompt ".")
)
(setq ename (ssname ss1 i) ;entity name
elist (entget ename) ;entity data list
etype (cdr (assoc 0 elist)) ;entity type
)
;;*Keep track of entities not flattened
(if (not (member etype
'("3DFACE" "ARC" "ATTDEF"
"CIRCLE" "DIMENSION" "ELLIPSE"
"HATCH" "INSERT" "LINE"
"LWPOLYLINE" "MTEXT" "POINT"
"POLYLINE" "SOLID" "TEXT"
)
)
)
(progn ;leave others alone
(setq numnot (1+ numnot))
(if (/= 0.0 (car (reverse (assoc 10 elist))))
(progn ;add it to special list if Z /= 0
(setq numno0 (1+ numno0))
(ssadd ename ssno0)
)
)
)
)
;;Change group 10 Z coordinate to 0 for listed entity types.
(if (member etype
'("3DFACE" "ARC" "ATTDEF" "CIRCLE"
"DIMENSION" "ELLIPSE" "HATCH" "INSERT"
"LINE" "MTEXT" "POINT" "POLYLINE"
"SOLID" "TEXT"
)
)
(setq elist (zeroz 10 elist) ;change entities in list above
numchg (1+ numchg)
)
)
;;Change group 11 Z coordinate to 0 for listed entity types.
(if (member etype
'("3DFACE" "ATTDEF" "DIMENSION" "LINE" "TEXT" "SOLID")
)
(setq elist (zeroz 11 elist))
)
;;Change groups 12 and 13 Z coordinate to 0 for SOLIDs and 3DFACEs.
(if (member etype '("3DFACE" "SOLID"))
(progn
(setq elist (zeroz 12 elist))
(setq elist (zeroz 13 elist))
)
)
;;Change groups 13, 14, 15, and 16
;;Z coordinate to 0 for DIMENSIONs.
(if (member etype '("DIMENSION"))
(progn
(setq elist (zeroz 13 elist))
(setq elist (zeroz 14 elist))
(setq elist (zeroz 15 elist))
(setq elist (zeroz 16 elist))
)
)
;;Change each polyline vertex Z coordinate to 0.
;;Code provided by Vladimir Livshiz, 09-Oct-1998
(if (= etype "POLYLINE")
(progn
(setq vrt ename)
(while (not (equal (cdr (assoc 0 (entget vrt))) "SEQEND"))
(setq elist (entget (entnext vrt)))
(setq crz (cadddr (assoc 10 elist)))
(if (/= crz 0)
(progn
(zeroz 10 elist)
(entupd ename)
)
)
(setq vrt (cdr (assoc -1 elist)))
)
)
)
;;Special handling for LWPOLYLINEs
(if (member etype '("LWPOLYLINE"))
(progn
(setq elist (subst (cons 38 0.0) (assoc 38 elist) elist)
numchg (1+ numchg)
)
(entmod elist)
)
)
(setq i (1+ i)) ;next entity
)
(prompt " Done.")
;;Print results
(prompt (strcat "\n" (itoa numchg) " object(s) flattened."))
(prompt
(strcat "\n" (itoa numnot) " object(s) not flattened.")
)
;;If there any entities in ssno0, show them
(if (/= 0 numno0)
(progn
(prompt (strcat " ["
(itoa numno0)
" with non-zero base points]"
)
)
(getstring
"\nPress enter to see non-zero unchanged objects... "
)
(command "._SELECT" ssno0)
(getstring "\nPress enter to unhighlight them... ")
(command "")
)
)
)
)
(command "._UCS" "_Restore" tmpucs "._UCS" "_Delete" tmpucs)
(command "._UNDO" "_End")
(setvar "CMDECHO" oldcmd)
(setq *error* olderr)
(princ)
)
(prompt
"\nFLATTEN version 2k.01f loaded. Type FLATTEN to run it."
)
(princ)
;;;eof
