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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
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$$ This program will read an ASCII data file consisting of polar point$ m5 G, H: f7 n; O
$$ data in two columns and create up to 1000 points. It will also! f5 _) D& q/ o! k, z, O
$$ optionally create a closed spline thru the points.
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1 l8 R. J/ [8 {. F STRING/ tfn(132), fmt(80)
# v- [" ~+ ]+ N0 I NUMBER/ resp, r, theta
7 i; m W' D9 ?- [& c ENTITY/ pts(1000), zero
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fmt = '#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@' + $
1 Z- }$ C* ~7 R4 \1 E, F* _6 m '@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@'* ~2 o( h% }/ p* G
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a20: TEXT/'Enter full path to data file', tfn, resp, deflt- _( `/ Y: ]8 Q6 S1 h
JUMP/ a90:, a90:, resp( |" x/ R: i8 C4 r) @, Q- W. g: ?
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FETCH/ TXT, 2, tfn
' ?$ `* ?7 T) X! o: S# D7 x tfn = &SFNAME(2,IFERR,a20： ）
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$ z" r7 Q3 o$ ?* h1 b Z $$ Find the space between the columns and set up the format string3 y- k+ s7 l: W4 v% j/ l
RESET/ 2
( m% m e) z# T0 ] READ/ 2, USING, fmt, tfn% V/ \5 F' p; G- f" c u
ii = 1
! p. m( S, V; i6 c- va25: jj = FNDSTR(tfn, ' ', ii + 1)
1 a4 j2 A# m) ]* Y IFTHEN/ jj == (ii + 1)
1 o9 P+ N2 K* Y3 m2 Z' a T; S ii = jj
4 r; Z& J6 v% o+ [1 G JUMP/ a25:
$ t: C: T7 ^# d, N ELSEIF/ jj == 0
: [3 Z) V( x2 R5 [/ z jj = FNDSTR(tfn, chrstr(9), ii + 1)
% K" j# r) J% T; h+ N ENDIF
. b4 K( P, d0 A0 Y4 d( N fmt = REPSTR(fmt, '@', '#', jj)7 v6 r* B9 N# z! p$ Q
! ~0 e8 l, g1 l) C) S" R% {2 z zero = POINT/ 0,0,0: r& h9 R, ? w& Y+ U6 E. U
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RESET/ 2
" ~0 N) H- |3 X ii = 02 S3 F1 s" i9 ^& _% x) e
a30: READ/ 2, USING, fmt, IFEND, a70:, IFERR, a70:, r, theta
" A6 Y6 ^4 R! d" x pts(ii = ii + 1) = POINT/ zero, POLAR, r, theta! U# |) N3 @: D4 l# S
if/ ii < 1000, JUMP/ a30:. s, \3 v/ n! J& R( `9 L: F
; p2 b. M2 _4 ]! K: N2 Da70: DELETE/ zero
" r( \0 _! D* w! ?% M$ V" l3 S FTERM/ TXT, 2! M/ u0 _3 }* k: R0 f, l8 n* `$ s
( J! G9 H% L# V+ } VIEWE/ AUTO
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4 l: P/ `6 a! J8 Y& e7 f1 i7 D5 B CHOOSE/ 'Create closed spline thru ' + istr(ii) + ' points?', $
6 _) |6 h+ n+ R+ e 'yes', 'no', deflt, 1, resp. D- D3 Y# ]+ N$ c1 E/ f4 h8 o& D
IFTHEN/ resp == 5, p9 J7 T6 G4 z& U& Y( B7 p. s) {
BCURVE/ pts(1..ii), DEGREE, 3, CLOSED
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" s4 F: l: ^ b9 N" } CHOOSE/'Delete points', 'yes', 'no', deflt, 1, resp1 q) t# W: y. Y" u$ w& p
IF/ resp == 5, DELETE/ pts(1..ii)* ?- s. B& u. c$ u$ E$ M: n
ENDIF
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a90: HALT7 P( g, C( Y5 j- ?" }3 ?
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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