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& P% l6 @, y' K$ m# N7 n【NX二次开发源码分享】Specify Circle 指定一个圆选择屏幕点
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6 Q# F% X8 x8 H& u) Z[mw_shl_code=c,true]static void map_arc_center_from_abs(UF_CURVE_arc_t *adata)
3 ~6 h- I) \: u" ?+ p{) S" h6 x5 Q$ `
int2 r( [& A5 c9 O9 n
irc;
1 x$ h2 v+ R. k5 h# k double: M) A, I; _' S4 A& ~6 F) `' w
abs_mx[9] = { 0,0,0, 1,0,0, 0,1,0 },
3 z0 e) G# d5 ~' X$ @4 {8 u" Q csys[12] = { 0,0,0,0,0,0,0,0,0,0,0,0},7 r1 ?! W5 L7 p) Z. ^& t
mx[12];
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UF_CALL(UF_CSYS_ask_matrix_values(adata->matrix_tag, &csys[3]));$ S4 m) i; Z: e$ B% d5 t& f* l4 Y
FTN(uf5940)(abs_mx, csys, mx, &irc);! H% D! F' d% q7 {. i4 {; p/ E# t
FTN(uf5941)(adata->arc_center, mx);0 \: ], P% m% V% n' _8 d
}
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% m/ s' l# Z7 S+ U( W0 h1 ]static void map_point_to_matrix(tag_t matrix, double *pos)! [; {+ P h! \# u
{. H4 |. g4 i* n0 H3 U% z$ H5 h1 {
int
. W6 f' @% I' L) }2 i5 s irc;
: u7 T1 l6 d0 F5 Z double
4 ^: H; z3 l. x- \) B" Y. ]0 s abs_mx[9] = { 0,0,0, 1,0,0, 0,1,0 },
" S: F' F2 L0 F csys[12] = { 0,0,0,0,0,0,0,0,0,0,0,0},
5 V$ |$ b" q# Y& R% O9 t mx[12];
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UF_CALL(UF_CSYS_ask_matrix_values(matrix, &csys[3]));6 ]% \7 I3 h8 D0 E2 @
FTN(uf5940)(abs_mx, csys, mx, &irc);
, l, ]9 T& P2 L9 y0 E7 e' V FTN(uf5941)(pos, mx);
" H: Y I! `# g4 b; z, b `}
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/ V, E3 d8 d! h2 t+ U+ ?+ w& D/* This motion callback emulates the rubberbanding circle seen when
7 g+ E! J# ~# q using the interactive option Insert->Curve->Basic Curves...->Circle */
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1 u+ R% o; Q" B% G: A) Astatic void rubberband_circle_cb(double *screen_pos,5 }3 B6 ~2 t# o! n& ^( P# y
UF_UI_motion_cb_data_p_t motion_cb_data, void *client_data): X F. J1 I) Q6 T; k% u
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double3 B9 N1 \9 F/ K& H! e/ z
axes[9];" A. e# T. S, \( j" [
UF_CURVE_arc_p_t
7 p) I- S" Y' z+ c+ I/ l my_data = (UF_CURVE_arc_p_t) client_data;. n- v+ _; i* O1 w9 k7 C% ^
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map_point_to_matrix(my_data->matrix_tag, screen_pos);
7 J1 J: F( I3 K8 o/ E' Y8 k UF_VEC3_distance(my_data->arc_center, screen_pos, &my_data->radius);5 e5 c' g/ u) M' b% F- D
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if (my_data->radius > 0)
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UF_CALL(UF_CSYS_ask_matrix_values(my_data->matrix_tag, axes));
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# ]0 _( `6 i+ C8 `: f+ X) } UF_CALL(UF_DISP_display_ogp_circle(motion_cb_data->view_tag,% e! Z( m9 e. N
axes, my_data->arc_center, my_data->radius));9 U$ p4 K4 r+ @& ?. @
}
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static logical specify_circle(char *prompt, UF_CURVE_arc_p_t the_data)0 v1 `6 |- r9 i8 x# B; [
{
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resp;
- p0 O: o7 n3 w/ W/ k7 Z- L! e- I tag_t
9 h) N5 l4 `! m v' N3 R1 h view;
' q' |5 q0 I2 _ E/ w char
5 p0 h% t) e9 J" d; I+ Q msg[133];
5 }% L4 U% ]" ?+ _. u1 { double
% Z" G5 V. s2 [) _ on_arc[3];, r4 v4 @8 `0 \% S+ b
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sprintf(msg, "%s center", prompt);( P( h$ Z5 c) G- X9 ~' _& M
UF_CALL(UF_UI_specify_screen_position(msg, NULL, NULL,$ P* @* o( D# g+ X6 ?4 `8 b
the_data->arc_center, &view, &resp));
* m6 V8 f! G5 |$ G7 w; I( _ if (resp != UF_UI_PICK_RESPONSE) return FALSE;
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the_data->matrix_tag = ask_wcs_matrix_tag();
, i A$ Z% c5 e( I8 I3 H7 P map_arc_center_from_abs(the_data);5 Q7 D9 o7 n# m- u9 b1 `, H
. p" e! G8 B1 h$ ~& H sprintf(msg, "%s point on arc", prompt);3 r7 u! s0 B- z
UF_CALL(UF_UI_specify_screen_position(msg, rubberband_circle_cb,
$ n Z# i4 B/ t1 w( ? (void *)the_data, on_arc, &view, &resp));2 O+ }0 W9 j& t5 F+ D/ N1 s
if (resp != UF_UI_PICK_RESPONSE) return FALSE;
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map_point_to_matrix(the_data->matrix_tag, on_arc);
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UF_VEC3_distance(the_data->arc_center, on_arc, &the_data->radius);
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: m% R u, A6 M return TRUE;
) P( k- ~2 j- B0 A6 C}[/mw_shl_code] d# e! q7 M# @) W* k
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