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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,
2 A; J; V! z* | \$ O) K9 ] UpdateData(true);# K# U7 E$ _. ^& }* U3 k( A
tag_t part_tag;9 l) ]4 J) \! g; i, V) ?
UF_PART_new("1",1,&part_tag);
: Q; r! h) ~+ c# q4 V' e) Z tag_t line_tag;3 B6 d' V* ~- }( j
UF_CURVE_line_t line_coords;
+ L: Z) R5 {, q) C line_coords.start_point[0]=x0;$ ^& A' b' H! E6 G1 C" e; Q: |( I9 t
line_coords.start_point[1]=y0;
& }# E5 ^- f: x line_coords.start_point[2]=z0;
! J- S8 n8 r# M. r7 E, Q line_coords.end_point[0]=x1;" f5 A% ]& R% k! \$ F3 x
line_coords.end_point[1]=y1;
6 R0 t. e7 w3 J5 a8 w. L* L line_coords.end_point[2]=z1;# U T& u2 q) G$ a
UF_CURVE_create_line(&line_coords,&line_tag);//生成直线
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$ M# b4 A; f! o% a, [" ?/ k% G( y char buffer[UF_UI_MAX_STRING_LEN];
8 R0 i" J- d7 b: T5 e1 b double parm;
5 c+ i! U! u/ i5 T0 [$ \) J parm=0;) T+ b( u9 l1 z/ j! o" C; \+ f* Y
double point[3];
" \+ {) ?" u7 X4 P) t2 O point[0]=x0;
$ m7 Y, e3 n! j& D, H- o2 r6 x3 P- X point[1]=y0;
' v8 e0 e/ B: s0 ^ point[2]=z0;
2 J* D% ^' E7 g: G( A double tangent[3], p_norm[3], b_norm[3], torsion, rad_of_cur;
2 i+ {# O# W3 @* Z UF_MODL_ask_curve_props(line_tag,parm,point,tangent,p_norm,b_norm,&torsion,&rad_of_cur); 8 p Q, r( h7 ` a9 H
double point1[3];: W$ P; U H/ U* D: \/ e8 K$ Q" r
point1[0]=x1;
% \% `8 W& ]( ~5 r. L( E4 e point1[1]=y1;& ]# K) I1 \! k: D; W( A* A6 k
point1[2]=z1;
$ R1 p* E! {, p+ n& V! ^ UF_MODL_ask_curve_props(line_tag,parm,point1,tangent,p_norm,b_norm,&torsion,&rad_of_cur); # x% b) [9 J8 M8 R: S2 t' N% b |: m# B
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tag_t curve_tag;8 A0 Q2 w6 X* @2 K/ k7 j
curve_tag=line_tag;6 L' }+ G+ I4 Q. |9 v: o! t1 ]% k
double start_param;
/ W. [9 a O3 n; l+ b7 m% c0 k9 d- ^8 W start_param=0.0;
1 f* h4 ?' g8 |$ j% n double end_param;3 u7 t) }; M' n$ x _
end_param=1.0;
1 N" ^0 m* g( L* J5 U UF_MODL_units_t unit_flag;
$ T; h/ R" ?; e5 t9 e/ i unit_flag=UF_MODL_UNITS_PART;) z9 u: b( E1 ~1 M# J# k
double *arc_length;
; v7 A) R( o/ z$ w6 W+ @ UF_CURVE_ask_arc_length(curve_tag,start_param,end_param,unit_flag,arc_length);//计算曲线长度
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/ }% Y3 p) z( ?- @ char meassage[133]; 6 [3 @; J' X/ y9 M/ ?( ?
sprintf(meassage, "%f\n",arc_length);
7 R O3 G p" {0 Z5 o# {: G& R UF_UI_write_listing_window(meassage); r* h, z2 h$ d4 Q0 \( i9 b& }
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ShowWindow(SW_MINIMIZE); |
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