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弹簧源程序. A8 l" e6 H$ l( y& l. Q
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( S. K1 @5 g/ I% K/ {# C- (defun errMsg (s) ; 当命令执行时出现错误 ' F- l: I& `7 \# `1 b
- ; 例如用户按下了CTRL + C
# l$ `/ L# c* B3 t7 G, P - (if (/= s "Function cancelled")
6 @" g8 ~5 I; A' m ? - (princ (strcat "
- F5 K3 B- `/ |8 x S8 w( U0 J - Error: " s))& c& J' \6 @4 q" ~4 @; Z4 b8 l
- )
$ w7 Q6 w* E5 k, Y - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值7 B3 b$ B7 E3 T/ O3 F
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值8 Q+ v1 q7 B& K8 W1 ]
- (setq *error* olderror) ; 恢复旧的错误处理
u' I7 y/ p/ T" U( T" d - (princ)1 m4 V. ]3 D2 v% b1 P
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8 f) U, N* D0 [7 k: d- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
# r' h/ C1 g+ V ~7 L$ f - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)8 ~; W1 i) ~) `) I
$ A% X) i* X) U) X2 a- (setvar "blipmode" 0) ; 关闭 blipmode
0 f# {! }5 p+ {" R5 Z7 y - (setvar "cmdecho" 0) ; 关闭 cmdecho/ O; F$ G* g4 f% B# [7 w* d
- (setq Pi2 (* 3.14159265 2))
& Y0 y; ~$ p n5 X' q- a( N0 w - (setq aGrw (/ Pi2 lr))
; a9 A# ^; r0 ^+ d - (setq dhGrw (/ bhfac lr))7 A( k, }2 w5 d2 i5 v( X" A' ~3 ?
- (if bvfac (setq dvGrw (/ bvfac lr)))/ G+ W% X: f" d6 i" u# n% a- E
- (setq angle 0.0)+ M6 h7 O1 n+ m) ~- Q
- (if bvfac
6 g2 y% q8 h8 { - (setq distnc strad dv 0.0)& p: a ^0 Y) e; L& B7 {8 ]6 }( q2 c( E
- (setq distnc 0.0): h- n! p* p' s8 ]7 D
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* ?: V2 R- `7 r2 y9 ~, M - (if bvfac 9 i# H+ K* H' y3 v4 f
- (command "3dpoly") ; 开始绘制弹簧4 a- Z H B y4 V! p
- (command "pline" cntPoint) ; 从基点开始绘制弹簧
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- (repeat nRepeat
& F3 j$ A) o w0 C) y - (repeat lr 0 `. D5 w1 `2 ?; C, l
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))/ r: r- f. F0 [6 P+ |1 Z
- (setq distnc (+ distnc dhGrw))8 s, F6 r' S3 f" _( f* i
- )$ \; m- O2 I2 x! S2 [+ Y
- )
) w0 P4 N, L, U. h0 }+ b: z, |" } - (if bvfac
- v# x, g4 D; y1 `2 L V" _ - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))5 r2 C* L. y% n9 i2 W
- dv (+ dv dvGrw)
- L7 {# }! K) m' b2 [. L$ { - )% H3 `; C7 D! }# ?# J
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0 E0 k9 }1 g) a# z/ Q3 S, Q: h - (command tp) ; 继续输入下一点! b6 h, _) y, `) a
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5 J3 ]2 M# J- r8 m/ m& i: n/ X& x- @ - (command "") ; 输入结束. l' y* N5 H* v+ U5 [0 r
- (princ)
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- ;;;- ^/ Q! m' u- o
- ;;; 生成三维弹簧函数调用接口$ u, E3 C0 S0 B5 L
- ;;;$ l* e- a3 m( @7 ^$ k% S; {
- U: B( x) @6 H1 S- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
' Z* ?% _& i4 n: b! J! x# \: x - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复% G8 T( p2 R% ]8 ?& K7 N! t
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
0 l& J9 J7 C# f, d6 `" R: p - (setvar "cmdecho" 0) ; 关闭 cmdecho 4 e4 h6 c h0 T' }$ p* x5 ]
- (initget 1) ; cntPt 必须非空$ `6 E% {0 a4 T+ a# n3 k/ Q
- (setq cntPt (getpoint "
5 k& W. r8 i. b y. Q - 请输入底部中心点: "))1 z) a+ s3 d; S
- (initget 7) ; RottCnt 必须非零、非空,不可忽略
4 c8 V- h2 [0 x' J* N+ s: t' Q - (setq RottCnt (getint "5 h9 s7 c6 Y S( \5 j2 h. d
- 旋转的圈数: "))! j0 V8 U9 h5 M+ z; l
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略9 E* x0 t5 b1 b- o
- (setq bgnRdtn (getdist cntPt "& l5 A3 P; H) j, M
- 起始半径: "))
9 M9 X$ C" B0 \ - (initget 1) ; cf 必须非零、非空1 w: }! T+ @7 o
- (setq horiGrw (getdist "
8 B \ L2 V8 ]/ \ - 每一圈的水平增长距离: "))/ C- ]( {5 r- L; L4 i
- (initget 3) ; cf 必须非零、非空6 t% {# M# {: x$ a
- (setq vertGrw (getdist "
$ T/ p+ S# P7 O/ {) s - 每一圈的垂直增长距离: "))
2 Z* n: N8 L: V; X+ c3 X$ X - (initget 6) ; ptCntPerCircle 必须非零、不可忽略
9 Y& [ Y0 `# J# `5 Q - (setq ptCntPerCircle (getint "* R O6 @& p) @
- 每一圈的插值点数<35>: "))) V6 L) {' }% M/ f
- (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
( A+ h2 U) c' r' @6 G, m2 R8 i/ n0 L - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)6 [2 X3 X: W% Q% N( q
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值! Q' l+ ^) \6 @: H- @; r* H b
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
9 Z' E4 r" V$ T' J' u2 o6 R - (setq *error* olderror) ; Restore old *error* handler9 l3 v6 ?$ ?) c9 I( p
- (princ), |# }. Q# D3 P5 b
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发表于 2010-3-13 11:12
楼主