UGNX二次开发源码分享：关于显示UG NX临时箭头功能

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) T2 j4 y0 ]: X2 z这功能其实很好用，比如选择面，自动显示面的法线等等。

static void do_UGopen_api(void)
{
1 o* i% |. ~. E8 D: m  double pt1[3] = {0.0, 0.0, 0.0};
0 ~' F$ W/ a* a) A  double pt2[3] = {2.0, 2.0, 2.0};
  double pt3[3] = {-2.0,-2.0,-2.0};
% D( h. `! x. L" s, K1 }  double vect1[3] = {1.0, 1.0, 1.0};
  UF_DISP_conehead_attrb_s attrb;
. d/ U+ N0 a3 `  _' W$ H  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
                   pt1, vect1, 1);
# u# U  m4 ~4 J- _' F- c   /* Example to draw the vector with the base of its staff
      anchored at the origin so that the vector appears to point
: |0 t1 K6 T) J# a9 _      away from the origin
   */
  [! S& h( o- G) S  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
: j! B# Y  J8 [1 Z/ t  X6 `                   pt2, vect1, 0);
8 i, _0 e- Y4 n/ B  UF_DISP_labeled_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
                           pt3, vect1, 0, "Normal");
. c- ~; C1 J0 \) ?" _6 `" L  UF_DISP_get_conehead_attrb(&attrb);
* f, P0 K5 c9 v: U# L+ q' C4 C: }5 G  /* Use color index three */
$ [8 e4 B! |, W, ~  e$ R  attrb.color = 3;
; x! y$ K. I' f  /* Update the current attribute settings */
( C2 G3 `$ W% w" d  UF_DISP_set_conehead_attrb(&attrb);
( g2 y) q. u# s6 c' U- P) j+ q  printf("\nCurrent conhead display settings:\n");
; e" \+ S9 F7 V) u! [7 C  printf("\tLength of Staff: %g\n", attrb.staff_length);
  \+ K8 _* S$ }7 x  printf("\tTotal Length: %g\n", attrb.total_length);
) w9 p1 ~/ A' d3 K1 r  printf("\tRadius of Cone Base: %g\n", attrb.cone_radius);
" w7 [! Z9 T& @6 o- y/ l- o  printf("\TColor Index: %d\n", attrb.color);
. j8 q0 {7 Q: b  printf("\tFont Index: %d\n", attrb.font);
+ v8 N& G  }1 |- q# c* I$ J) T  printf("\tDensity Index: %d\n", attrb.density);
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