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对的,UGDOC里就有。我帮忙贴出来吧。- M. M4 r, y3 a2 f8 h2 ~
稍修改一下就可以实现动态圆的功能。) n" e) q( ]& o0 a/ Q
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#include <stdio.h>
1 X+ r! `5 ~* f0 C* m' u# g#include <uf_defs.h>$ |# s( Q+ g1 u9 T/ y+ R
#include <uf.h>" I5 T' \0 ^& W$ n
#include <uf_ui.h>
! Z: C0 Q$ s- t- c1 l" b1 a" o#include <uf_csys.h># r% O7 ^+ m2 x" b- J
#include <uf_vec.h>
" L# T. t" u6 H#include <uf_disp.h>& ~* w" j# F/ \ s$ H3 \
#include <uf_curve.h>
% [& w5 k; T7 p0 H#include <uf_mtx.h>
+ V$ v7 Z1 @' x' s2 k/ r. P#include <uf_obj.h>
( c% O& |+ V* [# ]1 p U& Rtypedef struct8 d) D( x, T* H5 y' c# l4 q
{ UF_CURVE_arc_t *arc;. f k! e' B1 j
double abs_ctr[3];
: k* `5 }9 h" K double matrix[9];
9 Y- a A) L/ f" q1 g( n double x_axis[3];
% D) b: \% c7 L, G double y_axis[3];$ o+ U& F9 N/ F N# l5 @" H
} my_motion_data_t;: }- t: f7 i l. L5 b
/* Define a motion callback to render a visual representation of
- V$ b% N. D0 Y: @( P * the circle to be created, along with a bounding box around the8 N2 T4 B5 u* D2 I
* circle, an arc of radius 1.0, and a "rubberband" line from the
, W6 V2 K4 G$ P * center to the cursor position.3 ^! G: g! m. f
*/
1 }* }8 E; F; r0 @! T' q% Hstatic void motion_cb( double *screen_pos,
6 x, z, x% u/ d& N# q UF_UI_motion_cb_data_p_t motion_cb_data, C6 `: o' u/ I. c
my_motion_data_t *my_data ), m S: e, M4 B! c+ \
{
2 S. V! a X; q* F double radius, pos_array[5][3];( X# k0 l- j7 b* t' Z' `
double xrad[3], yrad[3], x_y_vec[3], x_ny_vec[3];
/ w% H; z* N7 h/ `9 J4 _7 ] /* Calculate the arc radius: the distance from the arc center! S/ F! E2 P) \, J* o
* to the current screen position.6 k+ f: H3 F1 I4 O! L0 l e& H+ f
*/: |, ]: J; J. o; C, y
UF_VEC3_distance( my_data->abs_ctr, screen_pos, &radius );
( m. D- c7 Z' x4 Y7 A, u /* Map the arc center to the "csys of the arc".
% S2 N; V9 B5 v! ~ */0 z+ u9 |: o. t1 C' z6 J
UF_MTX3_vec_multiply( my_data->abs_ctr,1 c Z2 ?% A& i+ ]
my_data->matrix,
4 w; ^, a. D" \5 v' I5 _ my_data->arc->arc_center );
1 [- ]/ Z! @4 z( Q6 x& _* z /* Draw a circle and an arc in the view of the cursor.
; H# R' [, r3 E */4 A1 Q/ w3 H/ d: H; d
UF_DISP_display_ogp_circle( motion_cb_data->view_tag,
1 q+ `- x. H; T0 J3 O my_data->matrix,: Y" ?" M; x$ P( W* H
my_data->arc->arc_center,
Q' c6 X }9 y# A9 u/ A( a radius );
8 d8 [% o5 V/ @9 `3 n" i& V; p5 Q( { UF_DISP_display_ogp_arc( motion_cb_data->view_tag,% q x& J f) L( K, @3 u' @
my_data->matrix,) G1 I" [+ s# c7 Z8 o" v
15.0*DEGRA, 345.0*DEGRA,5 d' h! S ^; X0 t! K
my_data->arc->arc_center,. B) n$ W3 s! s7 D* a
1.0 );
8 H/ Y% N2 a1 D3 m& \ _ /* Draw a bounding box around the circle.
$ r' E/ W& Z5 p+ d */
' P. C) r5 U/ R4 D4 A$ U8 ] UF_VEC3_scale( radius, my_data->x_axis, xrad );7 u$ \* W: }! k( P$ M5 Q
UF_VEC3_scale( radius, my_data->y_axis, yrad );
4 O0 x, t- U" H5 R, g; j( |+ K/ n UF_VEC3_add( xrad, yrad, x_y_vec );
& t2 n) I4 i8 j9 N( Q; S% t# Q* Y UF_VEC3_sub( xrad, yrad, x_ny_vec );
( a3 c; v) S) b" c UF_VEC3_add( my_data->abs_ctr, x_y_vec, pos_array[0] );6 n% v9 B- Z- A' b0 k/ Y- B
UF_VEC3_sub( my_data->abs_ctr, x_ny_vec, pos_array[1] );
7 } j6 ?. `+ p ` Z; |/ T UF_VEC3_sub( my_data->abs_ctr, x_y_vec, pos_array[2] );+ f0 W/ c$ l: o3 b: w' @! w
UF_VEC3_add( my_data->abs_ctr, x_ny_vec, pos_array[3] );' `5 }( g5 G3 H, K, E) D
UF_VEC3_add( my_data->abs_ctr, x_y_vec, pos_array[4] );3 T/ \) i. l% A( C1 ?
UF_DISP_display_ogp_polyline( motion_cb_data->view_tag,/ C8 j7 N' r. g
pos_array, 5 );
2 w1 d. k' \8 W2 y D. Y. e /* Draw a "rubberband" line from the circle center to the9 W C# |( {3 a
* cursor position.
- a" c0 ]0 l A( X4 x) C) R */9 I. n8 u: b' _/ ^
UF_DISP_display_ogp_line( motion_cb_data->view_tag,
8 p P, _8 d/ l$ Q my_data->abs_ctr,
5 k: A9 F) B; i screen_pos );
4 J8 L; z* a; K}
4 A! v% \9 U. A#define UF_CALL(X) (report( __FILE__, __LINE__, #X, (X)))" {: f, \1 }, j1 x5 l% Q1 v" u
static int report( char *file, int line, char *call, int irc)3 f8 [% \% p- D7 Q. c
{" D4 o4 f: G( m0 H
if (irc)
$ S t: }; h4 ^2 l7 v$ c# A {( y1 c8 f' Y3 n1 B* A
char messg[133];# M$ w C3 h; M2 u
printf("%s, line %d: %s\n", file, line, call);
# y7 I9 |# V3 W. ^6 v3 W( y5 X (UF_get_fail_message(irc, messg)) ?+ [0 h6 M) @- p1 k! O) T! F/ `
printf(" returned a %d\n", irc) :2 ^. T+ r* Q8 y6 [' L& h) e
printf(" returned error %d: %s\n", irc, messg);
9 C1 s8 f( k8 K) q, s }
: K0 o7 p% X, N9 O0 L0 l return(irc);
# O$ V, w( I9 V9 D l E1 V) N}
% x/ j8 v" y9 J6 E1 xstatic void do_ugopen_api(void)9 D$ O0 O X8 J; l8 n: W; p
{
: u: u8 y; |/ R& q int default_plane;
* }1 `; X) ~+ S Z! H: {$ d! ] int plane_resp, ctr_resp, pos_resp;
% r# |; J2 p" K1 m8 B" g tag_t plane_tag, saved_wcs, mtx_id, csys_id,
+ f5 U- ]& _$ l arc_id, view_tag;; J& U- r6 T2 ?9 J1 _) k6 V, |
double plane_matrix[9], plane_origin[3],0 R0 K- K2 C, X2 p) ^/ B
x_vec[3], y_vec[3], arc_edge_pos[3];
9 @9 }; \3 m _0 ?4 w+ ^0 g double root_origin[3] = {0.0, 0.0, 0.0};
4 g: S W/ l- ~; ^; H; \ double work_origin[3];
0 c- r* C" E8 M6 P: L UF_CURVE_arc_t arc; @) f5 Z0 j0 a+ ^
my_motion_data_t my_data;
0 a5 T1 C/ B" Z6 E: k
$ A7 [ E6 b' }9 l) m- A6 {7 g my_data.arc = &arc;( I/ k8 P: @0 i$ |8 k# ~) F
arc.start_angle = 0.0;
0 ^, M1 I0 D; q* \' { D arc.end_angle = TWOPI; /* Create a full circle. */$ p) I; `" o$ Q: O/ K* R' ~
default_plane = 5; /* Default plane = WCS */
1 W7 R- @3 C/ V T# r; p do- N- B: u* ^2 h+ g+ J; c7 z
{5 `* M7 Z- G! [+ U
/* Specify the plane on which the circle is to be created.( W$ [' Y5 J9 q0 d( p
*/3 G9 z1 z& H, D
UF_CALL(UF_UI_specify_plane(" {% r) P) k5 N; f. ~
"Specify plane for circle creation",
7 Z7 v9 K0 f# ~/ L$ w &default_plane,9 g& D8 w3 W1 T" @, l! A0 h
1,
" ^& N* W. X/ D& [ &plane_resp,
7 N3 E/ E9 t& Z plane_matrix,
\. \' W, _( X K3 T6 D4 k& p* g plane_origin,2 i# R% n: K, O2 g* s
&plane_tag ));( l" ]1 H2 D$ Z) ?2 n+ R
if (plane_resp ==3)
* `4 g. C3 y! v5 S {0 h1 D- O4 O0 L! Q. l& r
/* Save the current WCS for future restoration.: r: y: M+ N% S9 m9 \) u0 a+ A
*/
4 v; W; b8 c2 Z7 l# } UF_CSYS_ask_wcs( &saved_wcs );
; m; C3 T+ {7 z; O- X /* Move the WCS to the specified plane. This is4 J/ \! U; c2 ^+ G0 W3 P/ x8 P
* necessary because the position passed to the motion
. N I* e ?% B) Y% y" Q/ i( _ * callback, and the position returned by8 ?$ b5 ]+ n( \# u" Y0 ~
* UF_UI_specify_screen_position, is the screen
: T! z5 e* u, G: t! z, c# G1 S * position projected onto the WCS XY plane. k5 x. y! p' O" p3 {- h- ~
*/9 R& b& x8 i- ]
if (default_plane != 5)! a4 }# P5 K" s$ Y9 \0 l7 x/ ]" T
{3 G4 b' G* A) x" z r% `% b
UF_CSYS_create_matrix( plane_matrix, &mtx_id );
; D6 |( N; I& _% D0 u/ H: `! Y/ } UF_CSYS_create_csys( plane_origin, mtx_id,
5 q: z8 A# \- B! U; v! n/ j &csys_id );
8 j9 \- u2 Q2 K# z) Z# `4 M+ I UF_CSYS_set_wcs( csys_id );, Z& j) K- `- N& h/ O
}
( I+ b1 h6 s- J8 k! O# G /* Obtain unit vectors and the arc matrix relative to0 ^& @7 i% L! E) `; I N# G
* the Work Part coordinate system.0 w- _9 ^: |' f% i& f
*/
) \8 K: i$ S. L/ q UF_MTX3_x_vec( plane_matrix, x_vec );* ~ G# O2 y: Y$ G
UF_MTX3_y_vec( plane_matrix, y_vec );
. b- G8 K, Y* H$ W Q, x5 f UF_CSYS_map_point( UF_CSYS_ROOT_COORDS, x_vec,, y8 e3 h7 K0 x8 ]! N. K0 i
UF_CSYS_WORK_COORDS, x_vec );& c( X" f, M, d1 m# q& L
UF_CSYS_map_point( UF_CSYS_ROOT_COORDS, y_vec,
& M( p$ t) Z9 c# ^( J7 ] UF_CSYS_WORK_COORDS, y_vec );
+ I. `4 n' a1 _! e UF_CSYS_map_point( UF_CSYS_ROOT_COORDS, root_origin," ^% v, l7 r9 R' {
UF_CSYS_WORK_COORDS, work_origin );' P) k" [4 G, R- V. M6 d4 x
UF_VEC3_sub( x_vec, work_origin, my_data.x_axis );
8 B4 K& f3 U# y4 w# ~; j UF_VEC3_sub( y_vec, work_origin, my_data.y_axis );
0 A4 S) f% z5 P5 `; Y& ~. K2 E UF_MTX3_initialize( my_data.x_axis, my_data.y_axis, d( R+ Z7 g5 m: S4 u2 ?
my_data.matrix );
' g: C1 i% G0 K+ k( j% l) {6 } UF_CSYS_create_matrix( my_data.matrix,
$ x( `. m/ d" Z6 Z &arc.matrix_tag );
5 D9 E+ u4 z9 i% E R do
% M: j8 n% e7 u2 ~# k) f- O5 E% u {1 d1 e1 ]% O3 w i( O, S
UF_CALL(UF_UI_specify_screen_position(
+ B1 ]8 W; J3 M! O$ ]" B "Specify arc center",
0 F! e+ f3 N/ ` k0 y NULL,
( K) ?0 M# j" R1 l9 r- @ NULL,1 k4 M& y9 g; N+ [5 s; T/ M+ M! _7 b
my_data.abs_ctr,2 D; Z, _9 u; ~- I- L
&view_tag,
/ z/ R v$ R* H1 Q! z &ctr_resp ));) `; k0 Y& }0 Z; g- \
if (ctr_resp == UF_UI_PICK_RESPONSE)2 W* [% I1 }/ S8 D( N
{* _; j- b6 _6 ~6 Z" z+ h. O' R# ^
/* Map the arc center to the arc csys.1 D7 [/ t) V9 f; w5 m, c! j |! v
*/7 t2 j" y% K) [; p4 o
UF_MTX3_vec_multiply( my_data.abs_ctr,
/ t8 M+ B7 r: Q3 t& ~6 v( Q my_data.matrix,
4 S; C# s; o* Y' X- I% a" H arc.arc_center );
! S3 b& o, t; S) |7 I; U7 w ^0 {8 Q UF_CALL(UF_UI_specify_screen_position($ P! M3 U5 n' Q3 e" L! E
"Indicate arc radius",9 o& {: b* s6 y& g+ d ~1 h7 Q6 R
(UF_UI_motion_fn_t)motion_cb,
- Q0 f; s) L* l7 |. M, V (void *)&my_data,
) J) l3 h E! b) O arc_edge_pos,
* N& [2 V. R6 s &view_tag,( t. @! y. V4 S% d
&pos_resp ));
; }0 W s7 r1 g, m$ f6 j /* If a position was obtained, create the- u. u/ c8 q! H3 X" r5 Z7 m
* circle.
' o8 ~7 A1 V7 P( a */
9 g( t- y a* y( S% c if (pos_resp == UF_UI_PICK_RESPONSE)3 X0 L. r5 j1 {% w( O
{6 n, Y9 `6 l8 o( {
UF_VEC3_distance( my_data.abs_ctr,
, C- g5 }( m: _; D0 u& z arc_edge_pos,5 [8 P+ T% L7 y& w8 {( b
&arc.radius );2 g q3 Y1 w! r4 r7 H$ h
UF_CURVE_create_arc( &arc, &arc_id );
9 C! `1 [4 ?5 ]( l( M/ p, V }
5 l" K: x* ^" ]9 X9 D! w }; h2 I! A. n, J- r9 {, c4 T# ^! d
} while ( (ctr_resp == UF_UI_PICK_RESPONSE) &&1 R4 f! P: Z5 Q/ E$ C, U1 c8 k5 b
(pos_resp != UF_UI_CANCEL) );3 j* F5 P( ~7 W, ^
/* Restore the WCS if it was altered above.+ J5 f, S, K: l# R% f
*/
5 [' P; a6 J# _ if (default_plane != 5)3 Q7 V) o0 N/ Q% C
{
. Z. U! X. Y3 [9 m' D% |+ z7 F UF_CSYS_set_wcs( saved_wcs );( v/ R! ~! H% ~
UF_OBJ_delete_object( csys_id );
1 U/ f( U% V. Q: |+ u }* z0 I: {3 Z) e. b7 e: X* p2 l
}
8 |* Q$ b- R5 z% O6 Q. f' D } while (ctr_resp == UF_UI_BACK && plane_resp == 3);: Y0 P- J% N+ F' A/ N" j( i) J$ x' p
}
1 f4 n4 F8 N1 x% _9 C/*ARGSUSED*/4 g- T( \! b P( ?/ e/ M
void ufusr(char *param, int *retcode, int param_len)
) f; {+ v1 |+ L# R& @ \, O{2 m8 o+ j7 Y# b' n5 u9 W
if (!UF_CALL(UF_initialize()))
5 N. o) V. G7 C {
9 b: E' W( x5 X3 ] do_ugopen_api();2 D# u$ a7 ^3 _! N: K3 o
UF_CALL(UF_terminate());! m! X( O# E* L) H* | m! h
}9 C' j5 F+ |* F) i. O
}
% U3 ?1 A. V u" ~2 Q+ Q# U! ?int ufusr_ask_unload(void)3 i- }. o' a. i0 s- [
{6 S x1 ^% M7 q3 b: o) ~& J
return (UF_UNLOAD_IMMEDIATELY);: M2 z, Y; y( b) F$ K7 I
}" u# x' U& J! ~( c' [% B
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