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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6 F+ ^8 v; L/ k5 w. J. q这功能其实很好用，比如选择面，自动显示面的法线等等。

7 R" m. ^4 j5 C% `8 o7 Gstatic void do_UGopen_api(void)
{
* n% `( Y5 e" s: p* {  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};
+ J0 i) I* t& M* S  T0 e  double vect1[3] = {1.0, 1.0, 1.0};
  UF_DISP_conehead_attrb_s attrb;
  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
                   pt1, vect1, 1);
   /* Example to draw the vector with the base of its staff
) k" U  L$ B6 ?0 R1 F& i) ~/ M8 G      anchored at the origin so that the vector appears to point
- k' a' u( ~, q6 f, z5 d7 T5 X      away from the origin
/ _2 f' M( R3 o   */
  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
+ F# w# c0 m+ Q% z8 P5 o8 q                   pt2, vect1, 0);
, Q4 ~  F0 M+ F5 k  UF_DISP_labeled_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
                           pt3, vect1, 0, "Normal");
% X' E/ v. @8 J/ ^- ?0 |1 B6 J  UF_DISP_get_conehead_attrb(&attrb);
5 T0 z% a4 W- R/ A; d& q: j: j' H  /* Use color index three */
  attrb.color = 3;
  /* Update the current attribute settings */
& C8 m; J& y$ J4 O  UF_DISP_set_conehead_attrb(&attrb);
  printf("\nCurrent conhead display settings:\n");
  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);
; x; U# o+ x( s, S2 B  printf("\TColor Index: %d\n", attrb.color);
8 c5 k+ ^! e; P) I. Q) Y/ ~  printf("\tFont Index: %d\n", attrb.font);
  printf("\tDensity Index: %d\n", attrb.density);
}
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