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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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: V( Z+ P' G" [; c $$ This program will read an ASCII data file consisting of polar point
0 v1 @" k. v, u& m $$ data in two columns and create up to 1000 points. It will also
$ R8 s6 N# _& q( e $$ optionally create a closed spline thru the points.
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STRING/ tfn(132), fmt(80)6 b8 @- {) R; j6 ~, o& T
NUMBER/ resp, r, theta
4 }- w9 I& l" Y) m1 A ENTITY/ pts(1000), zero( i# g, R/ E! @5 ^% T
- @* A" Q/ `9 M" w4 o! l fmt = '#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@' + $0 o- a! {% U! j2 b" o: |; Y) _* E
'@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@'
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a20: TEXT/'Enter full path to data file', tfn, resp, deflt
( O# G( L3 k! H6 } JUMP/ a90:, a90:, resp
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FETCH/ TXT, 2, tfn- ?: q. q( j; p
tfn = &SFNAME(2,IFERR,a20： ）
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$$ Find the space between the columns and set up the format string
8 M/ F% U% c3 @- M+ z+ O/ @; [ RESET/ 2
4 N1 f7 A' T+ O READ/ 2, USING, fmt, tfn
5 d$ F ?( [" \3 G; s ii = 1
8 w |% z. c% O) `4 Z5 o# na25: jj = FNDSTR(tfn, ' ', ii + 1)
5 Z1 H% i' k2 T7 {8 ~. y% Q IFTHEN/ jj == (ii + 1)
3 e- i3 {! @, J8 Y ii = jj
' g* o" M( }5 M& n$ c2 s$ A9 ^ JUMP/ a25:
" F f% b# Y* k9 a- |( t ELSEIF/ jj == 01 Q# Q h1 X5 I
jj = FNDSTR(tfn, chrstr(9), ii + 1)
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fmt = REPSTR(fmt, '@', '#', jj)
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zero = POINT/ 0,0,0
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ii = 0
o5 N% G5 c4 c8 Q# Qa30: READ/ 2, USING, fmt, IFEND, a70:, IFERR, a70:, r, theta
7 c5 q& e) q. b- P, Z" p pts(ii = ii + 1) = POINT/ zero, POLAR, r, theta* P5 r8 _; G \5 X* k1 I
if/ ii < 1000, JUMP/ a30:6 o6 [' J* k' F
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a70: DELETE/ zero
7 e# |; h2 d# B: S- e! k/ p G6 {. u# i FTERM/ TXT, 2
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% z; c5 k7 ~$ ~: L$ O VIEWE/ AUTO. j( r$ A1 f2 e3 {9 o: W
+ t; x9 R3 ^7 K0 P/ z H& G CHOOSE/ 'Create closed spline thru ' + istr(ii) + ' points?', $
" j4 h( v- Z) B F8 {1 D3 R 'yes', 'no', deflt, 1, resp" ?3 E- {. r8 H( |! k
IFTHEN/ resp == 5# j9 k( R1 z3 p% h+ @0 t
BCURVE/ pts(1..ii), DEGREE, 3, CLOSED
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CHOOSE/'Delete points', 'yes', 'no', deflt, 1, resp' v: I2 a/ g- n' \/ j
IF/ resp == 5, DELETE/ pts(1..ii)9 d5 _) H7 i/ e0 G- s
ENDIF
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- s* {" O3 ]8 s" }/ V* Sa90: 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