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发表于 2007-2-2 22:17:32
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来自： 中国黑龙江哈尔滨
Subject: Sample GRIP program to create polar points from file. ~5 E- ~+ R0 k
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$$ This program will read an ASCII data file consisting of polar point. e) _& H+ M* g1 I3 g1 u; r+ C2 A' ?
$$ data in two columns and create up to 1000 points. It will also3 H$ ^- |1 [* l+ U# C* I5 y
$$ optionally create a closed spline thru the points.
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# n0 A' y! g1 I STRING/ tfn(132), fmt(80)7 j2 g$ k3 W& ?- F% f/ e, `' k
NUMBER/ resp, r, theta; F& X) z8 }: c9 N8 o7 I4 r2 K
ENTITY/ pts(1000), zero* ^ N1 E. c7 `+ k. b
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fmt = '#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@' + $. M4 s+ H; j- v
'@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@'
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0 F: w5 u- }. u, B: l) ?a20: TEXT/'Enter full path to data file', tfn, resp, deflt& E1 \8 b7 W$ H) s% D* B) }
JUMP/ a90:, a90:, resp! Y5 ^- Q5 Z2 G4 l& l
7 C7 v8 V6 i# F, e+ b FETCH/ TXT, 2, tfn
- l: T( U, m- j' v. A2 d7 x tfn = &SFNAME(2,IFERR,a20： ）: x8 p* S; ?$ `) V" A* o0 S% x# Z; W6 ^
6 A0 j' `" o' j6 L# }6 S $$ Find the space between the columns and set up the format string
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, V6 ` N8 W5 r0 ~) m$ ?- Y READ/ 2, USING, fmt, tfn- v+ o: t H; \) J p6 H+ A
ii = 1% F1 i5 f8 r9 N: V
a25: jj = FNDSTR(tfn, ' ', ii + 1)
# y1 |# X! }6 G$ T1 s& h IFTHEN/ jj == (ii + 1) Z5 Z( ~2 S7 |6 X: \
ii = jj7 P8 P2 N" L/ M6 R
JUMP/ a25:
! @+ a# W- E: A! f! e5 j. K ELSEIF/ jj == 0
; f" D7 a z! x. d jj = FNDSTR(tfn, chrstr(9), ii + 1)
" ]. Z4 j: F5 L/ j$ n- B# S/ ^0 O ENDIF
7 l' h2 M$ o3 p! D5 p fmt = REPSTR(fmt, '@', '#', jj)
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zero = POINT/ 0,0,0
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7 L) O/ b9 W' ? RESET/ 2* d% H" u6 z% i- v. ]
ii = 0
! D' f0 Z/ r. H4 t, L; T/ fa30: READ/ 2, USING, fmt, IFEND, a70:, IFERR, a70:, r, theta6 Q% g: f- V' s& H# A
pts(ii = ii + 1) = POINT/ zero, POLAR, r, theta
+ a4 U: @8 W. ~" l if/ ii < 1000, JUMP/ a30:
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a70: DELETE/ zero
, K8 x5 m/ ]! C0 L FTERM/ TXT, 2
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VIEWE/ AUTO
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CHOOSE/ 'Create closed spline thru ' + istr(ii) + ' points?', $3 U3 |+ t% {9 I$ _$ o; {1 Y) N
'yes', 'no', deflt, 1, resp
/ b, r8 {3 X+ \" E. y: y0 { IFTHEN/ resp == 5
2 O9 `+ _" u; H/ t& T) u, B A BCURVE/ pts(1..ii), DEGREE, 3, CLOSED3 v: C8 h3 S5 d2 U, K
) x: ], j% s4 w, @2 {. r CHOOSE/'Delete points', 'yes', 'no', deflt, 1, resp
" M1 [( q: D) z2 l IF/ resp == 5, DELETE/ pts(1..ii)" K0 i3 D0 c0 `- N& S+ D
ENDIF) i, f: o* q) I {; u- O
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a90: HALT
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给你个例子，自己改造一下 |
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发表于 2006-11-2 21:57:28