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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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$$ This program will read an ASCII data file consisting of polar point8 z6 o' X6 O. y5 G
$$ data in two columns and create up to 1000 points. It will also
' ^, H/ c8 ?- W( C $$ optionally create a closed spline thru the points.$ ?9 h' \' \9 d+ d& t. |
, U2 D2 M* p6 q# C6 H3 \8 a STRING/ tfn(132), fmt(80)
u `7 A' c7 u# }/ H1 C* d NUMBER/ resp, r, theta4 J8 {: Q2 g9 \! w# }
ENTITY/ pts(1000), zero
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fmt = '#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@' + $
* N0 d$ f/ ], V5 b '@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@'
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2 ~1 I2 `( ?* t( R- F! k( la20: TEXT/'Enter full path to data file', tfn, resp, deflt ^+ I3 |+ J; W0 ]% c- A* q: F
JUMP/ a90:, a90:, resp) b" V% G0 I, }' C- W4 g# S7 ~
+ {& {2 }/ z2 P7 p4 g- w
FETCH/ TXT, 2, tfn/ f/ K$ ~1 W7 N3 r8 F3 W7 H* s# E5 c
tfn = &SFNAME(2,IFERR,a20： ）
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- s/ [+ n4 i3 V8 j2 B+ @ $$ Find the space between the columns and set up the format string& R2 N U4 G& Q
RESET/ 2: b6 [$ W# Y- K3 f, i; m1 F
READ/ 2, USING, fmt, tfn
( V! [1 F" x: s; e9 e+ [7 \ ii = 17 |& i( s( s5 Y. c
a25: jj = FNDSTR(tfn, ' ', ii + 1)
* R, T4 U! U, n IFTHEN/ jj == (ii + 1)0 C9 W; u2 t: |2 |9 r$ n
ii = jj8 ^) \+ n$ `. ]7 |! [
JUMP/ a25:: X/ G: c9 D7 R: V4 m! B
ELSEIF/ jj == 0! ^, ^8 B, g& c7 [( I
jj = FNDSTR(tfn, chrstr(9), ii + 1)
' U$ D/ k, Z& f ENDIF' ^( H! ?7 x# Q$ w) Z- X# {7 I
fmt = REPSTR(fmt, '@', '#', jj)
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zero = POINT/ 0,0,0
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RESET/ 2
) ? ]) t, E' |0 a- g ii = 0
, v, m+ u" g/ p9 ]# ^2 Y# \a30: READ/ 2, USING, fmt, IFEND, a70:, IFERR, a70:, r, theta
# O% T4 ?( v3 h pts(ii = ii + 1) = POINT/ zero, POLAR, r, theta0 A4 I M* r* F2 ^8 B
if/ ii < 1000, JUMP/ a30:# K, u; J, _% z8 W) z
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a70: DELETE/ zero
+ a$ [+ L% I8 w- Q* z. g% J: P- P FTERM/ TXT, 2( K7 P7 Z/ h; ^" s. @; U
3 Q. j6 a! M5 W P$ i" e- j t VIEWE/ AUTO8 M) c5 y% F# ]& o5 E
! m/ p) `7 F% S* c6 C# r; i CHOOSE/ 'Create closed spline thru ' + istr(ii) + ' points?', $, z7 Q: K/ D3 T. D/ x
'yes', 'no', deflt, 1, resp- A- A* R. [1 h. R U
IFTHEN/ resp == 5
) C1 u$ L3 X1 f5 h) t BCURVE/ pts(1..ii), DEGREE, 3, CLOSED
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CHOOSE/'Delete points', 'yes', 'no', deflt, 1, resp; J# P1 d6 X( j1 f* L2 e4 {
IF/ resp == 5, DELETE/ pts(1..ii)
( x# Q4 `) L1 D ENDIF U. \, k4 ^9 Q) C; x6 C
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a90: HALT
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- X3 u4 Y- L; H% K, e! [" M# Y v$ U给你个例子，自己改造一下 |
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发表于 2006-11-2 21:57:28