求教怎样用GRIP编写一个在ug中提取曲线(直线和圆弧)起始点的小程序

ranran_01

求教怎样用GRIP编写一个在ug中提取曲线(直线和圆弧)起始点的小程序
   我对照书写了一个,但不能循环,请各位大虾帮忙改一下,或重新编一个简单的,谢谢!!

8 s4 d) F3 ?" w$ q% j# B$$实体变量声明
entity/cur1,cur2
( I% f& C" J3 m" A9 e( ]) [9 Mnumber/a(3),b(3),c(3),d(3),e(3)
! t. v) ?0 J& c0 p, k. gstring/str1(30),str2(30)
" j0 Q% h. X4 n9 |$ k- b, gnumber/lgth,arclgth,r,sa,ea,cr1,cr2

7 u" [$ s: o# z* g+ H- q) fl10:
' e9 ]0 z7 h% p; vIDENT/'pick many curve',cur1,cur2,resp
- \6 Z9 l& m% |' ]1 d- VJUMP/l10:,trm:,,resp
l20:
a(1..3)=&spoint(cur1)
b(1..3)=&epoint(cur1)
8 h: V9 s6 ^5 }$ K+ i. _/ F. g# ^lgth=&length(cur1)
9 Q* E1 W: I( ]5 ^cr1=&color(cur1)
% _8 A! O# ~. i6 P0 U! Ml30:
c(1..3)=&spoint(cur2)
e(1..3)=&center(cur2)
4 E% G/ P# m, \% q$ f1 C# _d(1..3)=&epoint(cur2)
arclgth=&length(cur2)
r=&radius(cur2)
/ n: Z2 |! e& K- s# z' Ssa=&sang(cur2)
ea=&eang(cur2)
; G. p5 n" ?& f  M+ ?7 tcr2=&color(cur2)
Print/'Information on object # 1.'
+ o1 P/ s# t* {9 OPrint/'Type'+BLSTR(13)+'Line'
/ o% }2 Z  b% b7 ~3 R9 [$ SPrint/'Color'+BLSTR(12)+FSTRL(cr1)
Print/'length'+BLSTR(11)+'='+FSTRL(lgth)
# g$ T4 c, }+ l* e- jPrint/'Start Point'+BLSTR(6)+'XC='+FSTRL(a(1))
( J& w) h4 C5 w5 x+ @Print/BLSTR(17)+'YC='+FSTRL(a(2))
5 W' ^! Z/ p: P7 A" o5 E, d- UPrint/BLSTR(17)+'ZC='+FSTRL(a(3))
Print/'End Point'+BLSTR(8)+'XC='+FSTRL(b(1))
Print/BLSTR(17)+'YC='+FSTRL(b(2))
Print/BLSTR(17)+'ZC='+FSTRL(b(3))
Print/'------------------------------------------'
# i) i! R) o- h% y( O7 E/ i, NPrint/'Information on object # 2.'
Print/'Type'+BLSTR(13)+'Arc'
Print/'Color'+BLSTR(12)+FSTRL(cr2)
Print/'Arclength'+BLSTR(8)+'='+FSTRL(arclgth)
Print/'Radius'+BLSTR(11)+'='+FSTRL(r)
: w, m9 C, ~- h* a+ w$ G2 `Print/'Start Angle'+BLSTR(6)+'='+FSTRL(sa)
* s# Y% B& |  q/ Q* bPrint/'End Angle'+BLSTR(8)+'='+FSTRL(ea)
Print/'Start Point'+BLSTR(6)+'XC='+FSTRL(c(1))
5 x7 w: |" v2 {- \' s2 j9 UPrint/BLSTR(17)+'YC='+FSTRL(c(2))
$ J* F2 N/ O9 g; r" _4 x3 K( ?Print/BLSTR(17)+'ZC='+FSTRL(c(3))
Print/'Center Point'+BLSTR(5)+'XC='+FSTRL(e(1))
Print/BLSTR(17)+'YC='+FSTRL(e(2))
* Y, u7 P. `) {. B/ V6 sPrint/BLSTR(17)+'ZC='+FSTRL(e(3))
Print/'End Point'+BLSTR(8)+'XC='+FSTRL(d(1))
4 i! l4 k" l8 N* xPrint/BLSTR(17)+'YC='+FSTRL(d(2))
Print/BLSTR(17)+'ZC='+FSTRL(d(3))
& ?6 K# f& S, b+ P* n" }! Y) qJUMP/trm:
$$程序结束。
9 J6 O! U% m$ D: U. {( ~5 B- btrm:
HALT

danyfer

要想循环就将倒数第四行的"JUMP/TRM:“改为”JUMP/L10:“