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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3 j1 p  x+ m  E" n6 C, |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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static void do_UGopen_api(void)
{
7 T! d# f$ [- x; F! E  double pt1[3] = {0.0, 0.0, 0.0};
  double pt2[3] = {2.0, 2.0, 2.0};
  double pt3[3] = {-2.0,-2.0,-2.0};
2 A- x- {0 \3 z  R( l! t% G  double vect1[3] = {1.0, 1.0, 1.0};
  UF_DISP_conehead_attrb_s attrb;
  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
- R5 _! y) ~3 a+ e' ~                   pt1, vect1, 1);
, F* L* D* V. y& @; B, H   /* Example to draw the vector with the base of its staff
      anchored at the origin so that the vector appears to point
$ ^& m# p- }$ h# D* ^      away from the origin
   */
  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
% z- m4 r7 M3 w& q6 {1 ?1 o( w# A                   pt2, vect1, 0);
: o/ B& d) b4 \4 W, y' c  UF_DISP_labeled_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
) s' h: M, E3 T                           pt3, vect1, 0, "Normal");
  UF_DISP_get_conehead_attrb(&attrb);
  /* Use color index three */
  attrb.color = 3;
  /* Update the current attribute settings */
  UF_DISP_set_conehead_attrb(&attrb);
  printf("\nCurrent conhead display settings:\n");
1 U3 j9 E1 E1 F* N; C+ K3 e. {  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);
9 C) K2 w, l% O% J6 \1 Q1 k  printf("\TColor Index: %d\n", attrb.color);
& q1 S+ y/ ]5 M  printf("\tFont Index: %d\n", attrb.font);
  printf("\tDensity Index: %d\n", attrb.density);
}
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