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弹簧源程序
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/ p3 b! t$ J9 c% G; [9 K- (defun errMsg (s) ; 当命令执行时出现错误
9 l& A6 |0 a7 L6 |" c; H - ; 例如用户按下了CTRL + C/ w; I+ u4 |% H9 a' B% j
- (if (/= s "Function cancelled")6 L" D! D4 t3 q" R* ?, h* I
- (princ (strcat "" l4 ?, x% r2 e+ I8 g
- Error: " s))- J& U: W9 v3 o& ^" B$ b9 W2 k. {
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- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
$ H' ^- z+ k8 m! a - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值' p0 J v8 A/ ?" s: F& B
- (setq *error* olderror) ; 恢复旧的错误处理* ~+ q" @ U. M0 t1 y
- (princ)
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" ~, I; Y c& ^) ~- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
4 s$ n( F! m6 _! T; M - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
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2 N& w/ S5 g# ^7 _( D- (setvar "blipmode" 0) ; 关闭 blipmode
3 I) V7 V a; F3 I g/ y: @+ ~ - (setvar "cmdecho" 0) ; 关闭 cmdecho
, l/ E6 N8 L: R - (setq Pi2 (* 3.14159265 2)); o* F" t0 }1 `8 }) Q7 ]
- (setq aGrw (/ Pi2 lr))4 k1 c1 G% k* h) X o
- (setq dhGrw (/ bhfac lr))+ q9 T8 W( `& U0 x! N. _# d
- (if bvfac (setq dvGrw (/ bvfac lr)))- r; {9 ?/ Y! W- y( s% o
- (setq angle 0.0)7 {+ u$ P4 v/ U
- (if bvfac L! H! Y Q F% R6 Q; [- H
- (setq distnc strad dv 0.0)
2 q* I1 ]3 E3 i0 A - (setq distnc 0.0)# B U" X2 o5 U7 K7 M; y# a4 q y
- )
7 B9 y$ {2 X a' w0 ]; k5 ~: @ - (if bvfac
9 v& t+ U. j" k! R$ |. ` - (command "3dpoly") ; 开始绘制弹簧
6 }- h: S4 i, s- x - (command "pline" cntPoint) ; 从基点开始绘制弹簧
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% i" ]# M. U, s - (repeat nRepeat 7 L' ]8 s+ E2 D
- (repeat lr
. h9 D! t6 G/ C, J/ @0 y - (setq tp (polar cntPoint (setq angle (+ angle aGrw))+ ]) d$ o4 o* W R
- (setq distnc (+ distnc dhGrw))
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# l4 O1 z8 B! L0 Y& S$ l2 B& s - (if bvfac
' q! ^- V- y- t6 x0 I - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))$ H7 Q/ P6 Y/ @- u* x+ a8 m' j
- dv (+ dv dvGrw)8 |; U9 M' z* |, n1 x
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- (command tp) ; 继续输入下一点; a* u/ K1 A/ X
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7 s3 R, i0 i1 i2 u# R9 W - (command "") ; 输入结束
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- ;;;
( x4 n# G4 c& ]( W2 I/ N9 W9 | - ;;; 生成三维弹簧函数调用接口
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- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
5 P6 a, Y& m( [+ B0 j6 d6 r - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复, T2 V) _ B+ K& G i
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复, p1 w V0 r7 r
- (setvar "cmdecho" 0) ; 关闭 cmdecho ! }& V! P0 k6 X' H8 b) @2 [8 S
- (initget 1) ; cntPt 必须非空' e: O: Q V, ~/ M1 u+ U& k
- (setq cntPt (getpoint "
% G# {/ E6 ~3 @$ i - 请输入底部中心点: "))- }+ w) i1 k6 e
- (initget 7) ; RottCnt 必须非零、非空,不可忽略' V3 M* ~ c6 y/ l
- (setq RottCnt (getint "3 U a8 F( {" c' D4 Q- ^; T ^# P
- 旋转的圈数: "))' Y j" |* c; k# Y L3 H
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略% A% {* X3 F4 U6 ~! ~0 X+ f
- (setq bgnRdtn (getdist cntPt "1 j( Q" A& C% c2 I
- 起始半径: "))
# I0 Z: |1 V/ R. b& j' S - (initget 1) ; cf 必须非零、非空# a4 _) u# t9 V3 Y* j' _1 F; O5 b
- (setq horiGrw (getdist "
6 `# q4 `! l: x$ [ - 每一圈的水平增长距离: "))
, |( l1 f! U( a9 [8 {, I$ l0 v: i - (initget 3) ; cf 必须非零、非空' Y0 ]. a# @. s
- (setq vertGrw (getdist "/ t0 F. L! ^6 m' G1 A, B; P
- 每一圈的垂直增长距离: "))
. i+ \* f7 R$ L1 @4 Q4 s - (initget 6) ; ptCntPerCircle 必须非零、不可忽略/ H7 q- Q2 E" ?
- (setq ptCntPerCircle (getint "
5 D: G* p4 G B( X - 每一圈的插值点数<35>: "))
2 b+ p! Q' v# t1 }: H+ n+ G: q5 p - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
) N" p: z! h" j$ q u* Y" U9 K0 n - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
' o. V" f# `8 }; \7 Z - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
* s# K+ Q9 j/ F- T - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值! O, R/ u* l/ q7 [" ]
- (setq *error* olderror) ; Restore old *error* handler
+ b" R# v7 E7 H9 C) } - (princ)
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发表于 2010-3-13 11:12
楼主