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# l$ m% o( H' @, S【NX二次开发源码分享】Specify Circle 指定一个圆选择屏幕点! s6 H9 [+ Z. ~& k
u }9 s7 L* f9 H4 T/ K, q) n[mw_shl_code=c,true]static void map_arc_center_from_abs(UF_CURVE_arc_t *adata)
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irc;
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abs_mx[9] = { 0,0,0, 1,0,0, 0,1,0 },4 X5 q3 ^' h. x* Z0 H3 C& y0 o' P
csys[12] = { 0,0,0,0,0,0,0,0,0,0,0,0},& T- w9 U" s$ r3 j5 ]7 J
mx[12];
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UF_CALL(UF_CSYS_ask_matrix_values(adata->matrix_tag, &csys[3]));
$ F! U6 U0 Y1 Y- U0 \" h( {1 P FTN(uf5940)(abs_mx, csys, mx, &irc);/ ?- L( _5 d7 B- l( M6 O
FTN(uf5941)(adata->arc_center, mx);6 _% t# X. [- z2 V& ]9 `& y F% [
}
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' |( U, ]: ~* }) Xstatic void map_point_to_matrix(tag_t matrix, double *pos)
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irc;* i3 |: ]/ V. Y6 Q o
double
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csys[12] = { 0,0,0,0,0,0,0,0,0,0,0,0},0 R3 f: y. M0 I2 B5 [
mx[12];
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UF_CALL(UF_CSYS_ask_matrix_values(matrix, &csys[3]));
% W$ w F% i9 s+ \ FTN(uf5940)(abs_mx, csys, mx, &irc);
4 w, U, ~* r- l0 F5 N FTN(uf5941)(pos, mx);; E2 B2 h# x# M1 a
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, c" ~ }, `& I, Q% S/* This motion callback emulates the rubberbanding circle seen when
: B' u/ z) D9 @ G1 c0 F using the interactive option Insert->Curve->Basic Curves...->Circle */, N8 L$ v8 r/ U( b- }. O" Q! V
( O% B$ P, T+ }8 Z) g8 @# d- q2 ~1 Estatic void rubberband_circle_cb(double *screen_pos,
' }' c7 U3 e- \& E5 A& ? UF_UI_motion_cb_data_p_t motion_cb_data, void *client_data)7 n& V9 `3 ^/ W+ V
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axes[9];
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4 `5 ~) B- @7 S$ ` my_data = (UF_CURVE_arc_p_t) client_data;
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; O% S2 o+ p/ i" T# c5 P map_point_to_matrix(my_data->matrix_tag, screen_pos);
% E8 a. s& K* l2 S UF_VEC3_distance(my_data->arc_center, screen_pos, &my_data->radius);
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if (my_data->radius > 0), _) u5 ~# |: T0 E l
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UF_CALL(UF_CSYS_ask_matrix_values(my_data->matrix_tag, axes));
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UF_CALL(UF_DISP_display_ogp_circle(motion_cb_data->view_tag,
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}
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static logical specify_circle(char *prompt, UF_CURVE_arc_p_t the_data)* _5 Y j4 a/ [) D5 a+ F
{
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view;
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msg[133];4 G( }0 A1 H2 [; U3 m) Q
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on_arc[3];" M- Q4 c7 w2 n$ J6 D* O
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sprintf(msg, "%s center", prompt);
; L9 A3 n8 n& @7 R UF_CALL(UF_UI_specify_screen_position(msg, NULL, NULL,
% u" C; c( u0 R. k the_data->arc_center, &view, &resp));/ b3 B! x. `: W: Q
if (resp != UF_UI_PICK_RESPONSE) return FALSE;7 [0 D% @/ |. V6 O+ H: A. C$ y+ a1 E
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the_data->matrix_tag = ask_wcs_matrix_tag();
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5 ~! K9 T4 N& R$ ?( | sprintf(msg, "%s point on arc", prompt);8 y. u: ^7 v& F. ]3 Q! Q
UF_CALL(UF_UI_specify_screen_position(msg, rubberband_circle_cb,( ^$ f, u$ ^* c7 Q! W
(void *)the_data, on_arc, &view, &resp));! t1 B9 g# L/ I. `5 v3 R1 a
if (resp != UF_UI_PICK_RESPONSE) return FALSE; P' Q! ~' N0 O6 u: Z
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map_point_to_matrix(the_data->matrix_tag, on_arc);9 Q+ A* m+ @5 u Q& k- j4 k4 f
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UF_VEC3_distance(the_data->arc_center, on_arc, &the_data->radius);
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/ w% G1 H0 _) @8 F) m return TRUE;
' f2 q6 c+ g( U4 i' t}[/mw_shl_code]
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