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/ `" G8 U8 x8 O+ R2 A9 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

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(defun dxg (code ele)
6 P" @5 j- |; J( @& ]& y
(cdr (assoc code (entget ele)))6 O' M0 W, G2 \9 l* _1 @
)
5 p5 }& x- f7 U
8 Z. R# ~1 x0 \& W$ L5 u
6 {! r) [5 t+ L. a
(defun vpt (a b c)
5 w( [( k3 ^4 C
(equal( t: B, \2 H* Y
(if (caddr a) a (reverse (cons 0.0 (reverse a))))
' T/ W6 |( e: v' L' j
(if (caddr b) b (reverse (cons 0.0 (reverse b))))8 V' i s& l! E
(expt 0.1 c)
+ J0 K7 r! i4 ^" G3 M
)
0 [) k1 j! s+ X2 v
)7 S; A+ x2 u+ `# p* T2 T5 }
, o2 ^& P0 o/ ]( W
;;; =========== for Test only =========================================) p6 A. @, y, c i
;;; 删除线段内的短线( B7 R0 i0 b: a- B$ c
;; ssen = Line Selection" E/ k* y( s/ f0 Q) a1 h
(setq nn (sslength ssen))
/ @* \: T5 R( z& |
(cond
; \7 l" f- t0 G+ g* l
((< nn 2) nil) ; Nothing to do
: I8 l' S9 W& i1 R
(T! h% M# W; `- h
(princ "\nProceeding with Line ....."+ x# e' O* t/ I
(while (setq ee (ssname ssen (setq nn (1- nn)))) + M: O0 y. z7 }1 y
(cond
6 S4 [# P9 T" h: i+ H: ]* r
((null (entget ee))) ; bypass7 U5 F" @+ O& h( x6 o
(T- N* n! s7 A4 T; B
(setq p1 (dxg 10 ee)
& m# ]( o1 C1 E n7 ?: ]1 R# j/ _
p2 (dxg 11 ee)( D! c$ t) Z" k9 h. z) C9 f
v1 (angle p1 p2)% e* B# e* \: G+ _
e1d (cdddr (cddr (entget ee)))
+ V, P! ^/ e4 Z) |+ I$ q
sc (ssget "f" (list p1 p2) '((0 . "LINE")
7 ?) R$ D1 w! x! z0 [3 [
sum (if sc (sslength sc))- f; D+ s) Q3 e. a; F" Q: J7 T
)
* t" o! Q7 K6 f; }
(while (and (entget ee) (> sum 0))2 ~6 a$ E; m* d
(setq e1 (ssname sc (setq sum (1- sum))))
' G( O* P, c+ A) O: h1 n" E+ X5 U2 W) z
(cond
3 O# S" ^" @. a
((eq e1 ee) nil) ; Itself
, s' S/ w; Q: V; Y2 K
((equal (cdddr (cdddr (entget e1))) e1d)5 ], w8 }6 D; ]
(entdel e1)' S# n7 X* e, }3 R
)
6 A' d* F3 E' L* k( g
(T; ]5 k3 V5 W8 U/ g) `' z
(setq p3 (dxg 10 e1) A& K$ Y! u. e, f7 g
p4 (dxg 11 e1)
0 @1 \' J- Y# E3 k1 E9 W9 S# s
v2 (if (vpt p1 p3 5)! e0 ?; u4 L6 A% C1 C
(angle p2 p3)
/ k4 C! Q/ ~# C7 u2 |
(angle p1 p3). s/ B* t& y4 z: {3 Y" Y1 \
), p- {) C3 L8 ?& z9 u% j" K
)4 W3 r, X8 ^# @! O; a% ~
(if (< (rem (abs (- v1 v2)) pi) 0.0001), `7 w0 O8 u, M5 W* @) `) }
(if (< (distance p3 p4) (distance p1 p2))- N% H: _6 e& O4 F: n' c
(entdel e1)
) h; t* q% H' o2 Y" O8 b
(entdel ee)2 ` P# E. U# I' `* S& ?
)" `8 O$ ? `- t+ U7 u6 P7 o) L
)
% w, H* U: q: C& l
)
: q" y6 ]) T3 Z) ]6 k& e+ U
)+ `, B$ T3 Q, E" p0 x; z
)
5 \2 g! ^- R9 J
)
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)6 u, @9 O4 V- Z% c3 C0 u
)
/ r7 _/ C* i9 C, I. R& f- _
)9 |/ C5 O& n( l" N) {! @
)
( W+ \+ T9 d3 @7 U
. H4 w1 Y$ n) \: u6 ?

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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[求助] 请高手帮修改一个程序

马上注册，结识高手，享用更多资源，轻松玩转三维网社区。

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