请高手帮修改一个程序

zedcar · 发表于 2008-11-26 09:33:57

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　　　在网上找的一个删除重复图元的ＬＩＳＰ程序　加载使用后发现对重复线段的删除有时候无效　而且线段内部的线段无法删除　就是说如果一条线段长１００一条长５０　使用这个删除不掉！！请高手帮忙修改下！！
　以下是程序原文：（附件内容是程序源文件）
(defun c:ere()
  (setq m0 (getpoint "\n左下角："))
  (setq m1 (getpoint "\n右上角："))
  (setq x0 (car m0) x1 (car m1) y0 (cadr m0) y1 (cadr m1) m2 m0 x2 x0 y2 y0)
  (while (< x2 x1)
(setq y2 y0 m3 m2)
(while (< y2 y1)
   (setq m4 (polar m3 0.785398 70.72))
   (setq a (ssget "_C" m3 m4))
   (if (not a)(setq i 0)(setq i (sslength a)))
   (while (> i 1)
      (setq j (- i 1))
      (setq b (ssname a (setq i (1- i)))) ;(setq b (ssname a 1))
      (setq c (entget b))
      (setq d (cdr (assoc 0 c)))
      (while (> j 0)
      (setq b1 (ssname a (setq j (1- j))))
      (setq c1 (entget b1))
      (setq d1 (cdr (assoc 0 c1)))
      (if (= d d1)
         (if (= d "LINE")
            (if (and (= (rtos (cadr (assoc 10 c)) 2 4)(rtos (cadr (assoc 10 c1)) 2 4))
                     (= (rtos (caddr (assoc 10 c)) 2 4)(rtos (caddr (assoc 10 c1)) 2 4))
                     (= (rtos (cadr (assoc 11 c)) 2 4)(rtos (cadr (assoc 11 c1)) 2 4))
                     (= (rtos (caddr (assoc 11 c)) 2 4)(rtos (caddr (assoc 11 c1)) 2 4))
               )(command "erase" b1 "")
            )
            (if (= d "INSERT")
            (if (and (equal (assoc 2 c) (assoc 2 c1))
                     (= (rtos (cadr (assoc 10 c)) 2 4)(rtos (cadr (assoc 10 c1)) 2 4))
                     (= (rtos (caddr (assoc 10 c)) 2 4)(rtos (caddr (assoc 10 c1)) 2 4))
                  )(command "erase" b1 "")
            )
            (if (= d "LWPOLYLINE")
               (progn
                  (setq e (cddddr c) e1 (cddddr c1) e (cddddr e) e1 (cddddr e1))
                  (while (and e e1)
                  (progn
                  (setq f (car e) f1 (car e1) e (cdr e) e1 (cdr e1))
                  (while (and e (/= (car f) 10))(setq f (car e) e (cdr e)))
                  (while (and e1 (/= (car f1) 10))(setq f1 (car e1) e1 (cdr e1)))
                  (if (or (/= (rtos (cadr f) 2 4)(rtos (cadr f1) 2 4))
                           (/= (rtos (caddr f) 2 4)(rtos (caddr f1) 2 4)))(setq e1 nil)
                     (if (not e1) (command "erase" b1 "")(if (not e)
                        (progn (command "erase" b "")(setq b b1 b1 nil))))
               ) ) ) )
               (if (= d "SPLINE")
                  (progn
                  (setq e (cddddr c) e1 (cddddr c1) e (cddddr e) e1 (cddddr e1))
                  (while (and e e1)
                     (progn
                        (setq f (car e) f1 (car e1) e (cdr e) e1 (cdr e1))
                        (while (and e (/= (car f) 10))(setq f (car e) e (cdr e)))
                        (while (and e1 (/= (car f1) 10))(setq f1 (car e1) e1 (cdr e1)))
                        (if (or (/= (rtos (cadr f) 2 4)(rtos (cadr f1) 2 4))(/= (rtos (caddr f) 2 4)(rtos (caddr f1) 2 4)))(setq e1 nil)
                        (if (not e1 ) (command "erase" b1 "")(if (not e)(progn (command "erase" b "")(setq b b1 b1 nil))))
                  ) ) ) )
                  (if (= d "TEXT")
                  (if (and (= (rtos (cadr (assoc 10 c)) 2 4)(rtos (cadr (assoc 10 c1)) 2 4))
                           (= (rtos (caddr (assoc 10 c)) 2 4)(rtos (caddr (assoc 10 c1)) 2 4))
                        )(command "erase" b1 "")
                  )
                  (if (= d "CIRCLE")
                     (if (and (= (rtos (cadr (assoc 10 c)) 2 4)(rtos (cadr (assoc 10 c1)) 2 4))
                              (= (rtos (caddr (assoc 10 c)) 2 4)(rtos (caddr (assoc 10 c1)) 2 4))
                              (= (rtos (cdr (assoc 40 c)) 2 4)(rtos (cdr (assoc 40 c1)) 2 4))
                        )(command "erase" b1 "")
   ) ) ) ) ) ) ) ) ) )
   (setq m3 (polar m3 1.5708 50.0) y2 (+ y2 50.0))
)
(setq m2 (polar m2 0.0 50.0) x2 (+ x2 50.0))
  )
  (princ)
)
(princ "\n\"ere\"启动")

[ 本帖最后由 zedcar 于 2008-11-26 09:35 编辑 ]

maoyangmy · 发表于 2008-11-26 11:05:42

有没有中间使用变量得说明？做什么用得？

zedcar · 发表于 2008-11-26 12:40:25

原帖由 maoyangmy 于 2008-11-26 11:05 发表 http://www.3dportal.cn/discuz/images/common/back.gif
4 c$ ^6 _# _' E- c) M7 X; o! Z有没有中间使用变量得说明？做什么用得？

没有　这个程序用来删除多余的图元。程序特点，可以删除完全重合的直线、多段线、光滑曲线（程序中设置了4位小数，当坐标数值四舍五入精确到4位小数时认为重合），删除位置重合的文字，删除位置和半径相同的圆，删除位置和块名相同的块。

ljm68 · 发表于 2008-12-6 15:17:15

给你一个思路：
处理"LINE"时，增加一个判定函数，用于首先判定直线L1的两个端点是否在直线L2上面；若在，再判定直线L1的两个端点是否在直线L2的两个端点以内，则返回直线L1，否则返回直线L2。
判定直线L1的两个端点是否在直线L2上面：
可以逐点计算直线L1的两个端点到直线L2的距离是否小余你的精度要求，若小余，则判定为该点在直线L2上，否则，该点不在直线L2上。

SunVei · 发表于 2008-12-6 22:42:04

8 b4 [2 f# {2 v7 r: u
(defun dxg (code ele)
5 K3 n* C! C/ F& X: r% V! O S
(cdr (assoc code (entget ele)))$ I! x. ^$ V" ^$ r5 y2 B
)) D, g; M3 g) h# @4 m( b6 t
6 C5 |6 d$ ?% t* t5 A+ ~% U
9 f5 {' {9 p9 C
(defun vpt (a b c)5 C/ u5 T, e, w% G/ O
(equal
3 I) m$ k2 p" |" o
(if (caddr a) a (reverse (cons 0.0 (reverse a))))
3 I+ ^& W- F( B* c5 g- ]
(if (caddr b) b (reverse (cons 0.0 (reverse b))))
9 p& f% n" ]2 N3 M y
(expt 0.1 c)' y& j2 N, X) y% o
)
- G1 `) G% s7 [/ Z
): W, H) n+ j ~ E$ j
+ Z9 A0 f) v0 K
;;; =========== for Test only =========================================: w( i& P/ \8 S$ u- @
;;; 删除线段内的短线9 n" `( f% i7 r0 D9 G% k. n* w
;; ssen = Line Selection, Y% L7 O2 U( W
(setq nn (sslength ssen))
4 M0 {2 W/ {! y8 `/ K9 ]- B9 Q
(cond* D0 B( a. X: E$ _
((< nn 2) nil) ; Nothing to do
, C o3 [) r, a$ ]
(T/ ]6 r$ V( w2 y( V
(princ "\nProceeding with Line ....."
, J- U" c3 c" r+ h" F
(while (setq ee (ssname ssen (setq nn (1- nn)))) . W: }$ a" q/ A7 Z, n! i0 {- K# e( `" ?( z$ d
(cond4 Q4 Z" ~; K2 ^- p# \3 z% ^
((null (entget ee))) ; bypass
7 \ i% A1 Y1 S. S y. U% l$ H
(T
- V% g& B1 F6 E# g4 _
(setq p1 (dxg 10 ee)
' J& _* H5 m+ J7 S1 F
p2 (dxg 11 ee)
( h2 j8 `8 b; P, f- e) N+ c! @% K* @
v1 (angle p1 p2)
1 e- j; h) ]) V. J) O# }! E0 \
e1d (cdddr (cddr (entget ee)))
/ n. f R; D2 D0 Y6 `* H- F
sc (ssget "f" (list p1 p2) '((0 . "LINE")
, a# X* U: z8 L( P
sum (if sc (sslength sc))+ r8 X$ R9 g7 Z- u0 p5 {6 _
): X) f' f3 n1 [# ~/ M/ j6 G/ H. s2 w$ p
(while (and (entget ee) (> sum 0))
& g4 M+ H6 Q8 H0 j: D
(setq e1 (ssname sc (setq sum (1- sum)))); m v8 z4 [) a9 O9 F0 V
(cond0 ?$ Q# I' R8 G2 v6 I
((eq e1 ee) nil) ; Itself
2 j: C: ?3 h8 L2 L
((equal (cdddr (cdddr (entget e1))) e1d)1 i; m' O, z+ b2 O
(entdel e1)
- K: c% C2 Y1 X" q, y! l% N
)
! \# _& z; w }. O* ~7 j0 w N
(T
(setq p3 (dxg 10 e1)
3 j% ^' R- W; F* O
p4 (dxg 11 e1)
. w7 f; N. b: @9 v; A' C
v2 (if (vpt p1 p3 5)
* i/ _2 @8 B _
(angle p2 p3)
& a' W( w0 E( }) F: z u. [$ c
(angle p1 p3)
" b; K$ j0 f1 I
)7 t! w r( ?: u* [/ T
)( D, j1 s: h+ g& i! O$ U$ a0 t& I
(if (< (rem (abs (- v1 v2)) pi) 0.0001)
/ L1 n z# Q: G0 O- }) ?
(if (< (distance p3 p4) (distance p1 p2))
- ]8 b" U2 n A c
(entdel e1)
2 }1 ^6 y/ A% {- f( \/ n# I
(entdel ee)
; \8 O1 d) E8 B7 H8 J2 W
)
$ O/ T) n) e$ s' ^3 V8 P5 d- y
)) ^: T' s/ L: G* }
)
& U# X4 Q0 K& v1 C3 b
)
4 G. f2 C7 _. o$ `+ M/ d
)
/ U. ^7 Q4 L9 W
)
7 [! j. ~$ Q" Z7 P3 `
)
& X! P$ Z8 Z1 K v- n3 Q
)
8 ]! j3 \: ]7 B! p s* K
)+ W* }. k' N3 U; t5 }7 i* |
)
" R7 Y N: V9 f' ?" _
0 u7 \0 e) o9 P" P7 o6 r

复制代码

[ 本帖最后由 SunVei 于 2008-12-6 23:24 编辑 ]

cai813 · 发表于 2008-12-7 09:59:37

我认为对有利于促进论坛的发展,同时也激励会员多参与.但对于管理人员应该考虑工作需要,不收取流量.

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