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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这功能其实很好用，比如选择面，自动显示面的法线等等。
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# ]% k1 R# ^+ O' ^% |) Astatic void do_UGopen_api(void)
{
5 Z& O0 G6 s3 @7 g3 H$ {  double pt1[3] = {0.0, 0.0, 0.0};
! ?1 o6 r2 S/ @  double pt2[3] = {2.0, 2.0, 2.0};
  double pt3[3] = {-2.0,-2.0,-2.0};
  double vect1[3] = {1.0, 1.0, 1.0};
: o. ]2 l; N- b1 `/ Q9 U  UF_DISP_conehead_attrb_s attrb;
, j7 R* u1 w9 }  n+ L  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
                   pt1, vect1, 1);
   /* Example to draw the vector with the base of its staff
      anchored at the origin so that the vector appears to point
" Q. @# ]0 ~4 k; T' B+ z* u      away from the origin
   */
8 g+ b, ~( ^6 x/ M' R# k1 |  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
                   pt2, vect1, 0);
. V/ l& x9 d9 c. h* o  UF_DISP_labeled_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
# `# c) U3 c, s+ i5 ?. H  j; Y                           pt3, vect1, 0, "Normal");
  UF_DISP_get_conehead_attrb(&attrb);
9 N; ?" L4 a& l. d1 u* ]  /* Use color index three */
  attrb.color = 3;
  /* Update the current attribute settings */
; @& W7 b! `' g  UF_DISP_set_conehead_attrb(&attrb);
  printf("\nCurrent conhead display settings:\n");
- R/ j4 V8 t! ~- X) d, g& A; C: l  printf("\tLength of Staff: %g\n", attrb.staff_length);
  printf("\tTotal Length: %g\n", attrb.total_length);
  printf("\tRadius of Cone Base: %g\n", attrb.cone_radius);
2 `# \7 d1 T' d6 d, z  printf("\TColor Index: %d\n", attrb.color);
8 F1 ~/ O% k0 j7 C. Y, F9 i  printf("\tFont Index: %d\n", attrb.font);
' i7 E2 T* X$ Z% @. p& ^6 h* B  printf("\tDensity Index: %d\n", attrb.density);
, C3 G4 P; C; o}
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