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(defun errMsg (s) ; 当命令执行时出现错误
2 ~: z8 @. b! ?& Y: w' b# F; l! O ; 例如用户按下了CTRL + C
8 }7 r& K' _" H! m q7 q (if (/= s "Function cancelled")5 }5 i8 ^7 L) F# N
(princ (strcat "\nError: " s))! c) S3 l3 I6 H
)
* l0 ~: L1 U8 @5 M& @$ d (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值7 ?3 ?& O( {, p
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值+ J0 j2 u3 e; V, e% e0 T8 G
(setq *error* olderror) ; 恢复旧的错误处理
& Z4 J& ~- g9 y$ ]3 w0 s6 [ (princ)% t* b( Z. H0 d# ^% x' @
)( t; g# C) {% P; x
(defun spring (nRepeat cntPoint bhfac lr strad bvfac
2 l' `2 }6 z; I: Q, q7 O / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)$ G& F0 |: e6 G) [
(setvar "blipmode" 0) ; 关闭 blipmode
9 W4 S, V% i* F& }$ X$ i (setvar "cmdecho" 0) ; 关闭 cmdecho
5 T$ m4 D0 T: S3 G0 ? (setq Pi2 (* 3.14159265 2))
" C. C- l2 c/ Y* d! E6 h; X" o5 | (setq aGrw (/ Pi2 lr))
: _9 j, A! s4 D+ [, `, z- ^$ r! s (setq dhGrw (/ bhfac lr))
2 B$ a* i" a' c: g (if bvfac (setq dvGrw (/ bvfac lr)))) h) [( _8 l" _
(setq angle 0.0)
& X5 v b7 ?# u$ g8 O (if bvfac
2 x3 k! _6 u6 Q9 a* v (setq distnc strad dv 0.0)
8 v8 L& b# R3 L ^- [; \7 Y/ T (setq distnc 0.0)
7 q" z# X C! j ): |: }! L |5 a4 i4 n
(if bvfac ! ?! l+ z# A/ h* r3 R- Y6 x( T2 C9 b4 q
(command "3dpoly") ; 开始绘制弹簧$ m" X& Q& ]0 L* ^' Q
(command "pline" cntPoint) ; 从基点开始绘制弹簧. b( |! [* C$ y# ~ w; F6 B
)- t$ t2 p2 h- j" T
(repeat nRepeat % [$ p7 Z* ]" ~) E% S% \$ ]
(repeat lr
2 ~4 N2 N2 ]6 M4 x3 s! w* ] (setq tp (polar cntPoint (setq angle (+ angle aGrw))
' a4 c) G( t5 ^# n7 A7 Q& [ Q7 I (setq distnc (+ distnc dhGrw))
3 T. u, J# Q$ ] )4 d( Q/ ^/ b, \' l+ ^) b
)
/ x7 n1 L0 {7 V* u4 V/ u6 {* \5 f9 F (if bvfac
$ ?5 |2 v+ P% P- D (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
; P$ k! _9 i }/ l+ Y3 I6 T dv (+ dv dvGrw)
6 j2 L% V$ W' x$ y X2 n ) p8 ]% x# u( j3 Q$ U1 H! t. N
)$ F# k$ V0 S7 W* D
(command tp) ; 继续输入下一点) A: C8 P# I# ]+ E. W! X- u- U
)0 Z9 \$ x% v* k9 L+ K0 X
)
9 M! O E/ m2 T; K (command "") ; 输入结束
1 B, F, j) n8 |4 `# w% M3 e: _+ x (princ) _. a# M; T4 `; P2 H8 o
)
! p1 l: [% _+ _$ f& e" G `+ K* V;;;
! M- J! E( v: k' }" ~;;; 生成三维弹簧函数调用接口
) q8 G4 j: _4 j' e* @7 @* G5 w;;;
e0 B8 f& [* @9 \- R(defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
; ?" T4 R6 G" m8 L( M; E* r (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
/ R7 B1 i a: l' I: @ (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复8 U. m' k0 n+ [, A( n: N4 m) }
(setvar "cmdecho" 0) ; 关闭 cmdecho
6 d2 z2 I* [8 B) o, U+ ~ (initget 1) ; cntPt 必须非空
- `! I+ N2 c' A8 [ (setq cntPt (getpoint "\n请输入底部中心点: "))2 V7 a& K; h2 I% j5 Z& K
(initget 7) ; RottCnt 必须非零、非空,不可忽略# ~% c' ]. d' ^" j D
(setq RottCnt (getint "\n旋转的圈数: "))3 C( z D0 |) _5 G9 n& a b
(initget 7) ; bgnRdtn 必须非零、非空,不可忽略1 m& T3 N1 L( U* B$ d) [( f
(setq bgnRdtn (getdist cntPt "\n起始半径: "))
. Q& z! s& A* n L$ c (initget 1) ; cf 必须非零、非空2 U* ^2 |1 d3 K @) r; ?6 O9 T
(setq horiGrw (getdist "\n每一圈的水平增长距离: "))
) k; f' B/ q- U- G (initget 3) ; cf 必须非零、非空
( q7 v& F0 b' P! X0 b (setq vertGrw (getdist "\n每一圈的垂直增长距离: "))( _3 x5 w2 m7 J$ J1 q
(initget 6) ; ptCntPerCircle 必须非零、不可忽略
7 D6 h0 ~4 h% z) F (setq ptCntPerCircle (getint "\n每一圈的插值点数<35>: "))* s/ I5 F; h k
(cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
3 l6 a* h& C0 y, K6 ? d (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
6 O4 ` Q0 U# \' A (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值5 @- |2 s8 ]" Q8 V7 k3 r
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值* P* a+ R% }2 _4 I: R: l: ]
(setq *error* olderror) ; Restore old *error* handler
* `" F1 ]9 c. p q (princ)6 C9 E4 E2 b$ n. j- w) Q* |( X
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发表于 2007-2-27 20:32:35
