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我看了,求曲线程度的UF_CURVE_ask_arc_length这个函数,但是我写了后却没有用啊,求指教,我是新手,也不知道程序对还是不对,3 A. j6 H% G) E ^" O- y6 a1 t% S
UpdateData(true);
0 C7 m. I* x1 W tag_t part_tag;
0 b! d* |" r' o UF_PART_new("1",1,&part_tag);; G( \% _+ l8 [
tag_t line_tag;; ]2 ^- B2 n! l, T$ Z4 [
UF_CURVE_line_t line_coords; ' j( i8 Z' N( ~7 x* y! a, {
line_coords.start_point[0]=x0;
/ W& p: \( f3 Z line_coords.start_point[1]=y0;* _7 G! |% u1 c: ? Y- `. H
line_coords.start_point[2]=z0; n8 C! R3 D% n+ ?* ~3 G
line_coords.end_point[0]=x1;
3 r6 a) V$ Z( k* i line_coords.end_point[1]=y1;1 I1 ^. F) H3 L
line_coords.end_point[2]=z1;
. K- e, y# R I; q" T$ C% u UF_CURVE_create_line(&line_coords,&line_tag);//生成直线
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& j/ d8 _# }+ p( g char buffer[UF_UI_MAX_STRING_LEN];% \7 }& t9 Z+ Y2 _2 V3 t+ r' a
double parm;5 a0 ~9 l/ W3 n, a. S- ^
parm=0;
% y O. \9 j7 ]! ~- u1 ^* | double point[3];9 S% B& {. q: r
point[0]=x0;
$ W: V( Q- O, F4 w point[1]=y0;
! B9 k$ V9 L( G# M2 U! } point[2]=z0;
) a/ O$ T) c# v' g0 p double tangent[3], p_norm[3], b_norm[3], torsion, rad_of_cur;
. n; n3 M; `1 e UF_MODL_ask_curve_props(line_tag,parm,point,tangent,p_norm,b_norm,&torsion,&rad_of_cur);
1 Z9 m3 Y* Z5 Q _4 v+ {1 b: d double point1[3];' k, G: n8 P( ?! J0 d# I( a7 I3 Y
point1[0]=x1;
, ?; H5 N# r% _1 S- B: p5 ~# O point1[1]=y1;
9 m+ n( p5 F! P- [4 f point1[2]=z1;
2 @& [ Y$ s( c; a; E5 R9 x1 W% @ UF_MODL_ask_curve_props(line_tag,parm,point1,tangent,p_norm,b_norm,&torsion,&rad_of_cur);
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tag_t curve_tag;; c. ^1 y3 h& M) d
curve_tag=line_tag;
6 p- {) {. W) @- a0 _7 w double start_param;' Y8 {+ t! L6 o, ?5 c+ L: K J
start_param=0.0;! v9 |. I* \2 r6 j" B
double end_param;
, s' y$ e8 d4 E. }. ?3 C7 c end_param=1.0;
% E, p7 { D# ?; J. p# z UF_MODL_units_t unit_flag;5 w; z. q- q( B3 d, g) E; h
unit_flag=UF_MODL_UNITS_PART;* P& ?- w0 S$ d, m7 }
double *arc_length;
% s& H$ ?5 I: n! H' s, d' H7 e UF_CURVE_ask_arc_length(curve_tag,start_param,end_param,unit_flag,arc_length);//计算曲线长度' N F+ X2 g7 i# n4 d; {& [
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char meassage[133];
2 I+ @5 a6 i4 q' w$ Q1 M- U1 o% j sprintf(meassage, "%f\n",arc_length); $ {7 K6 ]' S6 K9 X$ W- d/ @
UF_UI_write_listing_window(meassage);
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ShowWindow(SW_MINIMIZE); |
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