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对的,UGDOC里就有。我帮忙贴出来吧。
# g- G; W# w) r: q E稍修改一下就可以实现动态圆的功能。
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#include <stdio.h>( U8 i! H0 z7 `
#include <uf_defs.h>
' u# Q* q5 o z0 K#include <uf.h>8 H3 u2 a- J& T5 C+ V
#include <uf_ui.h>, f- y+ ?- }' d9 \# d5 ^! v& H \5 H& s
#include <uf_csys.h>! z$ O& h' c0 x. l" ?
#include <uf_vec.h> m% Z# o3 _; L3 t: o5 t+ s
#include <uf_disp.h>) b- J- G8 g* z) D/ u# [
#include <uf_curve.h>2 Q& F; t+ q" X
#include <uf_mtx.h>' U6 l6 U6 I1 X# w1 R
#include <uf_obj.h>/ l8 A4 u7 s3 {, h
typedef struct
, R* p- _2 ]+ |! C { UF_CURVE_arc_t *arc;
6 l% E$ ~( c$ W+ s+ N double abs_ctr[3];# n- l5 l, ^" k/ z2 V6 }5 G. \
double matrix[9];/ Z/ K7 m. E/ M! E2 U4 g' G
double x_axis[3];1 R! p+ O( W1 {8 g! ^& Q
double y_axis[3];
. a" t$ t# _8 R7 F' t } my_motion_data_t;# T6 k+ E9 z; S& D+ X- p
/* Define a motion callback to render a visual representation of5 k9 C8 J6 m @ O9 [
* the circle to be created, along with a bounding box around the
. Z7 R) x6 Z2 q9 g. u; z * circle, an arc of radius 1.0, and a "rubberband" line from the
; m2 u. G: }- K* G+ f1 ^, D * center to the cursor position.! q# r+ T# ~" @$ Z6 j; d/ w
*/$ V6 F' d/ a0 f' f
static void motion_cb( double *screen_pos,
, ~! c4 i, O* t UF_UI_motion_cb_data_p_t motion_cb_data,9 W h; L# t# w3 e9 Z" J
my_motion_data_t *my_data )# y3 t: k+ U" P4 k( Q# r
{: T: J; ]8 ~4 Q: p$ k
double radius, pos_array[5][3];
/ u% L2 d8 ^3 r7 ^ double xrad[3], yrad[3], x_y_vec[3], x_ny_vec[3];: k# ~, [# T6 o6 c. n1 {% X' ?
/* Calculate the arc radius: the distance from the arc center/ J$ A* B1 u) }) d" {
* to the current screen position.
) G, {9 x6 \' @ */% J8 t5 C3 w* |7 D8 J* i
UF_VEC3_distance( my_data->abs_ctr, screen_pos, &radius );( d3 U6 P) |$ c
/* Map the arc center to the "csys of the arc".4 f, ^! r& l; @5 _" V1 k! c
*/
1 {1 C+ F, b+ [6 r0 x$ ^ UF_MTX3_vec_multiply( my_data->abs_ctr,: ~1 Q8 p0 u w" M; p& V! z
my_data->matrix,
% A* [9 }0 K' L" t/ f% t my_data->arc->arc_center );
' `6 ?/ ^) i9 R5 O# f0 T /* Draw a circle and an arc in the view of the cursor.- R5 g$ k; E) V
*/
5 j5 x8 n$ L+ g( E UF_DISP_display_ogp_circle( motion_cb_data->view_tag,: s4 S* ?6 V( |: Z% y
my_data->matrix,) f# \3 r. S( n: z) y
my_data->arc->arc_center,
+ o9 x4 z% Q( Z" [) Z6 G0 M2 V0 B radius );. B% G8 X# p" ` ?0 f
UF_DISP_display_ogp_arc( motion_cb_data->view_tag,$ t& x7 {& b# e4 V Y
my_data->matrix,
. L1 S* l- M" a! L5 m P( c 15.0*DEGRA, 345.0*DEGRA,- Q* q! c. I4 d6 d2 [& I3 S
my_data->arc->arc_center,* i& M1 l3 P4 s& `4 |; ?5 R
1.0 );1 I: k+ ~# e& z: v3 h7 z3 I
/* Draw a bounding box around the circle.
; I: o4 v3 |9 q- a( i! N */
: L0 C X% P: g UF_VEC3_scale( radius, my_data->x_axis, xrad );
! I* a9 I8 i; `- H" _ X' S. i UF_VEC3_scale( radius, my_data->y_axis, yrad );' w* Z7 E6 F* E2 u
UF_VEC3_add( xrad, yrad, x_y_vec );" {, e, G: Q# m% B$ p
UF_VEC3_sub( xrad, yrad, x_ny_vec );
" m, Y8 ^# g8 F* B+ g4 l UF_VEC3_add( my_data->abs_ctr, x_y_vec, pos_array[0] );' ^2 B) g4 G1 T
UF_VEC3_sub( my_data->abs_ctr, x_ny_vec, pos_array[1] );
9 o1 j6 Y6 o H0 _- @7 P6 M. C4 t UF_VEC3_sub( my_data->abs_ctr, x_y_vec, pos_array[2] );7 U; r" g7 A' v+ a* {1 K
UF_VEC3_add( my_data->abs_ctr, x_ny_vec, pos_array[3] );
( E i& N& c. i2 a' k9 \$ g$ C1 ] UF_VEC3_add( my_data->abs_ctr, x_y_vec, pos_array[4] );
8 t5 m! w4 J C r7 d/ O3 h. ~ j UF_DISP_display_ogp_polyline( motion_cb_data->view_tag,
$ T* _. j4 Y z/ b2 V% e pos_array, 5 );5 v( T6 p! k! T2 X% c6 B+ L
/* Draw a "rubberband" line from the circle center to the1 ~+ ?" F5 Q- \% u: a
* cursor position. a+ p# A3 O& D) t
*/
c" U) f& M" W/ x UF_DISP_display_ogp_line( motion_cb_data->view_tag,
; ^, q6 q* O) y, V my_data->abs_ctr,
1 A; C- y& T$ I screen_pos );
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#define UF_CALL(X) (report( __FILE__, __LINE__, #X, (X)))
* n% F- ~0 `( T& Y- Y* Y1 ?8 m. ]# ?! ^static int report( char *file, int line, char *call, int irc)
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if (irc)
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char messg[133];& ^8 [0 z& X, A9 Q$ Y
printf("%s, line %d: %s\n", file, line, call);
, \( e4 [% |, ~5 }2 C- X$ b- c6 B5 R (UF_get_fail_message(irc, messg)) ?
0 H" k2 o1 I& u printf(" returned a %d\n", irc) :
0 p! H# H4 { b& n+ K1 H printf(" returned error %d: %s\n", irc, messg);& @7 W; X) x& G4 l" k0 ]
}
- `, l4 V9 v4 r2 L3 @ return(irc);
3 O( `9 {! J& l# h! A3 G. x* K8 [}
$ `" u# u& D) S8 [+ U$ Qstatic void do_ugopen_api(void)
; k8 A2 a' g2 L! h{
9 [9 ^5 i6 ?6 e( N3 v4 T0 R; G$ C int default_plane;
2 R( ?8 Z% Q& j' N7 N' d int plane_resp, ctr_resp, pos_resp;
. H$ ]) @5 ?& h, Y' H6 q" m tag_t plane_tag, saved_wcs, mtx_id, csys_id,8 i k" M$ j& t+ K1 h
arc_id, view_tag;! w+ Y- y' [9 [3 i: c* I% e. w7 h
double plane_matrix[9], plane_origin[3],- }, J# S/ p/ F% d
x_vec[3], y_vec[3], arc_edge_pos[3];" Q: z+ k' S5 Z3 I& d D
double root_origin[3] = {0.0, 0.0, 0.0};
0 O# N. w& ~' Z$ o. G v double work_origin[3];! f8 L' l# f6 W( \. v
UF_CURVE_arc_t arc;
, r6 b8 z; f% N) L* j* C* X. } my_motion_data_t my_data;
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my_data.arc = &arc;
, ^. ~ Q9 `, }# w& `. w arc.start_angle = 0.0;
/ T( E r' n: A' F1 u# E arc.end_angle = TWOPI; /* Create a full circle. */
/ P1 D, J: h/ w; \ default_plane = 5; /* Default plane = WCS */
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{ t9 @# Y* e( l% C! ?. o
/* Specify the plane on which the circle is to be created.
* Q; d3 k- l4 z/ @- i */8 j( f6 A6 T8 T! b
UF_CALL(UF_UI_specify_plane(
( Q" ^/ U5 c& `* q+ t$ b3 u' m "Specify plane for circle creation",
: H; P4 b$ r* E &default_plane,
9 v, T" s) J! @3 q: s/ w! } 1,% L0 j8 y W, w3 E9 N2 P0 z5 y
&plane_resp,6 T' L3 a2 S( B
plane_matrix,$ I. ], ]" i" [9 F% N% t* ]
plane_origin,( [. O5 z: d9 g) Y% ~
&plane_tag ));9 Y7 R6 B3 y e D+ b4 q
if (plane_resp ==3)
: l7 F5 c1 f, Q4 l. p I3 s L, W2 G {
/ m& E" j4 p: O; F, X K /* Save the current WCS for future restoration.% R2 C8 k1 _9 e$ d
*/
8 c, A/ Z+ H* w* i" {' S' M& N; j UF_CSYS_ask_wcs( &saved_wcs );
6 N7 k- |( A, v& Q /* Move the WCS to the specified plane. This is
9 V) z8 t+ Y+ _( s. F * necessary because the position passed to the motion
: I3 E8 P' V4 I0 Y- P * callback, and the position returned by' g8 Q5 y p' O. k% B% Q
* UF_UI_specify_screen_position, is the screen+ L$ ~0 H) H# v: E8 _
* position projected onto the WCS XY plane." ]. }; T7 ?9 ]' z) ]3 n+ f, g/ X
*/
+ h0 q# J/ a. Y: w& T if (default_plane != 5)
6 U* X4 |8 H, y& h8 Z9 W% x {! I: g0 b- O! d- J+ Y
UF_CSYS_create_matrix( plane_matrix, &mtx_id );
+ F7 @. j+ w3 ]4 v UF_CSYS_create_csys( plane_origin, mtx_id,
7 { v F5 A w. A/ J' e &csys_id );
# t8 D0 b4 Z/ V. s UF_CSYS_set_wcs( csys_id );
( }5 _- \7 U3 [+ b! z+ {% G" O }. d ^% x) D" H8 T
/* Obtain unit vectors and the arc matrix relative to
3 p- R i$ P# P4 u * the Work Part coordinate system.
- [0 P# ^% ?. }; H) @6 u( n */3 e% Q7 G: B# A. N
UF_MTX3_x_vec( plane_matrix, x_vec );4 D1 ?4 a4 Z; n/ ?! N) d4 `
UF_MTX3_y_vec( plane_matrix, y_vec );( S8 C' d; L" ~9 o9 L" I
UF_CSYS_map_point( UF_CSYS_ROOT_COORDS, x_vec,7 @$ A, u+ N* i1 D
UF_CSYS_WORK_COORDS, x_vec );8 Z. O m. d- T r) i6 C
UF_CSYS_map_point( UF_CSYS_ROOT_COORDS, y_vec,
@3 `& \+ R( u" b8 W UF_CSYS_WORK_COORDS, y_vec );
# e( t; y0 [& {" w' v UF_CSYS_map_point( UF_CSYS_ROOT_COORDS, root_origin,
7 j) H" ?7 W9 q* i/ D# V3 M UF_CSYS_WORK_COORDS, work_origin );* a, o2 y9 C* J+ b: f
UF_VEC3_sub( x_vec, work_origin, my_data.x_axis );
3 v$ V4 \( y% q. T6 } UF_VEC3_sub( y_vec, work_origin, my_data.y_axis ); k; W) c$ J% ^9 r- `
UF_MTX3_initialize( my_data.x_axis, my_data.y_axis,$ I }3 ?& F/ @( \2 h6 l+ |/ v; V
my_data.matrix );5 G# C0 v5 A5 f* u
UF_CSYS_create_matrix( my_data.matrix,
* u R$ l$ j; G+ [1 k5 L! w &arc.matrix_tag );
- t8 B* q2 g, S9 y$ B- { do4 ^6 h% N( A n
{5 e$ _4 M( b& @/ R$ M% j& q
UF_CALL(UF_UI_specify_screen_position(% F! g& R. l- }+ V! R! b3 C1 ]
"Specify arc center",# A. E( q! N; ~8 ^& l$ v% R3 W8 n
NULL,& }2 [$ J0 b/ ?, q5 t7 Y v' U
NULL,
6 p; p# O. b9 Y; h% Z my_data.abs_ctr,& u( I; n7 H8 ]8 o5 N; C% ]( i, {
&view_tag,- e7 S: Z3 m3 X& ~
&ctr_resp ));
: ?' J. F6 ]( |( |' q6 j! q if (ctr_resp == UF_UI_PICK_RESPONSE). e6 @' e" P4 G' L
{" |/ S- C$ p, ~( I
/* Map the arc center to the arc csys.
% w7 b) e9 [8 ?# [3 ] */1 f' @/ n0 ~9 J+ U* _
UF_MTX3_vec_multiply( my_data.abs_ctr,
% q+ E1 m0 D) @+ _) P) c& X; j my_data.matrix,+ y0 v( M& B: ^
arc.arc_center );9 p! x/ x! T! q3 o
UF_CALL(UF_UI_specify_screen_position(
8 v/ T* n! r, I* [. c# g "Indicate arc radius",
& E/ P- M6 B* |7 X( T$ b3 @- ] (UF_UI_motion_fn_t)motion_cb,
4 H2 q. l, O' c& w3 A (void *)&my_data,. w @8 f* m9 k& `- o
arc_edge_pos,
5 `+ b- b5 q# L" I) X4 k& W& a1 z &view_tag,, U6 B2 @9 m, `- n# \) \ F3 K
&pos_resp ));
' k. ~: m- ?8 H; V1 B a9 |- ] /* If a position was obtained, create the7 y/ p4 I+ F8 i8 v) E* ~
* circle.
& ]+ h" z% s7 R% P */
" J2 v' e$ k% e6 O9 n7 K if (pos_resp == UF_UI_PICK_RESPONSE)
- g3 @/ C% X! P {
/ a# |8 [+ \6 U u UF_VEC3_distance( my_data.abs_ctr,
2 a, u5 O) ~7 P- S5 @: B2 u arc_edge_pos,
. j- T, n. G9 {1 F &arc.radius );
* A5 {2 D0 J5 v7 n& u5 b6 V; u. J. @ UF_CURVE_create_arc( &arc, &arc_id );
5 `4 D2 m- T6 N, c: X0 ^1 { }: ~! E3 w. \ R% Y7 I8 E u$ }
}# e. j* U- D- @& |. p( l7 P
} while ( (ctr_resp == UF_UI_PICK_RESPONSE) &&- X- T8 N1 N# B! L6 H
(pos_resp != UF_UI_CANCEL) );
2 A( o# `0 y+ H: i /* Restore the WCS if it was altered above.
3 v9 ?; b2 p- c, K X */
! g* ?, d/ l$ j if (default_plane != 5)* Q* u- X3 |. e; @+ B6 o& \
{
9 o- z! [! O: v# m UF_CSYS_set_wcs( saved_wcs );* @$ c4 `1 }+ v' i
UF_OBJ_delete_object( csys_id );5 e/ w0 ^" t. c
}
3 n% q, n" S* _/ o. m$ |* Z: D" j2 e }: L, x _: c- B3 Z; Q- q8 B2 w
} while (ctr_resp == UF_UI_BACK && plane_resp == 3);
( @8 A Q& ^$ J. Z}1 C7 P! X6 \ j! `0 S) _
/*ARGSUSED*/
8 [- v) o( y) ^( d$ ^void ufusr(char *param, int *retcode, int param_len)# s, E' o0 q1 [$ b! A2 M" F" f0 U& V
{ s- H, c- b& D8 ?. g
if (!UF_CALL(UF_initialize()))
6 f& \- y. J5 n2 S+ T; Z {8 x- I% f E' ?: g! P9 \% L8 q
do_ugopen_api();
. ` _2 O5 B! I7 ?4 _9 A& R UF_CALL(UF_terminate());/ ~& u7 F. Y) H5 w' N d5 s5 J
}
; e9 G/ g! F7 Y7 h}
4 N$ L+ f4 e7 Z' {2 W3 B, \* z/ gint ufusr_ask_unload(void)
3 c% g6 p1 ^4 R{
4 G1 G! y Z' y7 }1 h return (UF_UNLOAD_IMMEDIATELY);
+ p @$ D9 l! |5 G}
0 r. l7 `* x3 I2 C( T7 a# _9 X+ k. L5 j* v3 z' j; j o
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