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( ^$ O) k8 s: J+ R【NX二次开发源码分享】Specify Circle 指定一个圆选择屏幕点/ N3 M* U( `* f
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[mw_shl_code=c,true]static void map_arc_center_from_abs(UF_CURVE_arc_t *adata)& P8 a% j& V& Q+ ]2 h" E1 }3 l
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int
0 i& k0 R1 L8 e7 S/ J1 J& |- n irc;% l3 W: r* h! F2 u; m
double
& x, U* F/ S/ ]3 G$ H abs_mx[9] = { 0,0,0, 1,0,0, 0,1,0 },
0 [3 f) ]5 {8 J" W- w; j; @2 R: ` csys[12] = { 0,0,0,0,0,0,0,0,0,0,0,0},, P3 E5 C R, ?/ J: ]* } @/ }# p! x
mx[12];: g; a9 q" s' ?! u" G+ P
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UF_CALL(UF_CSYS_ask_matrix_values(adata->matrix_tag, &csys[3]));) s: \* [7 M) d e. q
FTN(uf5940)(abs_mx, csys, mx, &irc);
. I0 Q& ~1 i: C0 `. i FTN(uf5941)(adata->arc_center, mx);9 p, ~- m( \8 H8 ~6 T
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static void map_point_to_matrix(tag_t matrix, double *pos)% k7 K C9 @" [
{
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irc;
( r5 _9 F; l; f; I8 [ double
6 s+ x) G1 c. r# Q9 A7 ] abs_mx[9] = { 0,0,0, 1,0,0, 0,1,0 },
, e8 a% e9 [0 { csys[12] = { 0,0,0,0,0,0,0,0,0,0,0,0},
9 ]* ?& f7 P' t6 K/ t) K mx[12];* N' }7 m; N m% T
! R3 n# f7 j! O; m+ @) C UF_CALL(UF_CSYS_ask_matrix_values(matrix, &csys[3]));
6 F" D# z( a: E5 z+ }, t FTN(uf5940)(abs_mx, csys, mx, &irc);
% ]) N( v. A" V FTN(uf5941)(pos, mx);$ G# C8 M" I" _4 P' I" p; w
}
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: m, d# \# k1 {# K1 W/* This motion callback emulates the rubberbanding circle seen when
) h0 U/ ~5 s) \) y using the interactive option Insert->Curve->Basic Curves...->Circle */( {4 m, d+ C# s
9 e7 j; s4 e* f9 ^6 B& Ustatic void rubberband_circle_cb(double *screen_pos,# O v# T" G7 s6 x# M* }
UF_UI_motion_cb_data_p_t motion_cb_data, void *client_data), t3 V6 d; U3 |/ | g
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double1 K1 k9 X0 [* c! @- N/ \
axes[9];/ l) X/ H4 C( b0 X; Q
UF_CURVE_arc_p_t3 l7 ]1 G5 w$ e/ \" ?- S3 j% K. p
my_data = (UF_CURVE_arc_p_t) client_data;3 K: a% O$ d% x5 u
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map_point_to_matrix(my_data->matrix_tag, screen_pos);7 W6 N2 x( r/ {( i, ]+ B
UF_VEC3_distance(my_data->arc_center, screen_pos, &my_data->radius);
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$ E% e" G$ }7 |- y5 N0 E+ R if (my_data->radius > 0)7 m: T, M$ y1 l) m% k7 M5 [0 q
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UF_CALL(UF_CSYS_ask_matrix_values(my_data->matrix_tag, axes));
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7 p6 l$ m) d7 o UF_CALL(UF_DISP_display_ogp_circle(motion_cb_data->view_tag,
* O \# z6 T' T9 H axes, my_data->arc_center, my_data->radius));
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9 `9 g# y, o K$ [' ^8 hstatic logical specify_circle(char *prompt, UF_CURVE_arc_p_t the_data)+ c" b% r1 I; x3 n3 ~7 S
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int
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tag_t3 v D" M$ c& V4 |3 Z- ?
view;
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msg[133];
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on_arc[3];- a) c7 d& y( {
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sprintf(msg, "%s center", prompt);
- Q$ { d0 L; j `) u UF_CALL(UF_UI_specify_screen_position(msg, NULL, NULL, a; V M6 L2 J3 W3 v
the_data->arc_center, &view, &resp));0 j" c; i& s" t0 P( d
if (resp != UF_UI_PICK_RESPONSE) return FALSE;
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the_data->matrix_tag = ask_wcs_matrix_tag();! ~ i4 h5 Y, C. a' K2 c0 J
map_arc_center_from_abs(the_data);; |0 |, H4 ^+ e f% M7 I- ]; r* Q
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sprintf(msg, "%s point on arc", prompt);( X/ `6 r+ D9 h3 Y- \. u1 c, Z; @* T
UF_CALL(UF_UI_specify_screen_position(msg, rubberband_circle_cb,6 f5 w% s% y# n# U" O
(void *)the_data, on_arc, &view, &resp));
, x# j9 L X- K, D& W$ ? if (resp != UF_UI_PICK_RESPONSE) return FALSE;' r8 y i' w% g( e
7 ~6 X/ |9 T( m5 R& G, m map_point_to_matrix(the_data->matrix_tag, on_arc);
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6 P+ J9 _% X. D T UF_VEC3_distance(the_data->arc_center, on_arc, &the_data->radius);. d% w# T' l6 a3 e1 j I" p
$ p$ C9 c, k' ^; V% ^ return TRUE; x% {" a3 Z* ]$ }$ S) H$ {; G
}[/mw_shl_code]4 o; W- _8 j0 m9 g) E) X3 Y
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