Re: [問題]如何將 autocad 檔案中，不同Z高程的線갠…
我自己寫的版本，寫到一半
想說，不可能寫到完整
就上網抓一個 別人寫好的，
非常完整的版本
請大家欣賞，如下
;;; 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")
(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 <Y>: "))
(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
※ 引述《sjgau (sjgau)》之銘言：
: 這個問題，已經處理完畢
: 就是 寫一個 LISP 程式去處理每一個物件
: 把 z- 座標設定成 0.0
: 有興趣想要了解 參考這個 LISP 程式的朋友，
: 可以 使用外面的 e-mail 跟我 求檔
: 我的 外面的 e-mail: sjgau4311@gmail.com
: 程式不大，303行
: 有詳細的注解的 原始程式碼
: ※ 引述《greenmonster (muddy)》之銘言：
: : 標題可能打的有點語焉不詳，請見諒。
: : 狀況是這樣的:
: : 手上拿到的是官方都市計劃的圖檔，要在這上面作建築設計的修改，
: : 由於原始圖檔上頭將各個物件線條等等，依照測量出來的高度直接在Z軸上用不同高度表示，
: : 這使得在平面上看到的連續線條實際上是好幾段處於不同高度的線段，
: : 常造成在平面(XY面)上要修改的時候抓不到點或者誤判，
: : 是否有辦法將這些位於Z軸上不同高度的線條等，一次壓回Z高度0的XY平面上?
: : 因為這是實際在執行的工作，有急切需要，願各位大大不吝指點。
: : 或有覺得問題不清楚的可在跟我說
: : 謝謝!!
--
※ 發信站: 批踢踢實業坊(ptt.cc)
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