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。

static void do_UGopen_api(void)
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: ^5 D% z) g  ?. ~2 a: x6 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};
  double vect1[3] = {1.0, 1.0, 1.0};
/ p6 a" t, ]" g' D: ^7 O) b  UF_DISP_conehead_attrb_s attrb;
4 f" M, k1 `, k7 A  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
# V' e3 K& H7 `! S6 j& F                   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
: G1 e% t/ d6 e      away from the origin
   */
) `+ t! b1 Z. r7 U2 r% r  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
3 X+ y# x" T! l. E                   pt2, vect1, 0);
1 J- [8 y- a! S" X, j6 ]' |  UF_DISP_labeled_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
% b8 x, R5 P$ Y6 @                           pt3, vect1, 0, "Normal");
/ L7 q  C0 {5 ?+ j% C9 W5 a  UF_DISP_get_conehead_attrb(&attrb);
  /* Use color index three */
0 G8 P8 B$ z! i6 `' m  attrb.color = 3;
  /* Update the current attribute settings */
7 U' L2 |+ q" P& D  UF_DISP_set_conehead_attrb(&attrb);
- k$ Q2 }- N- K# T  printf("\nCurrent conhead display settings:\n");
1 `# K1 O6 b, _& _( |8 X2 y7 R* i  printf("\tLength of Staff: %g\n", attrb.staff_length);
+ \) S/ A7 [/ o# e3 _2 p1 t  printf("\tTotal Length: %g\n", attrb.total_length);
  printf("\tRadius of Cone Base: %g\n", attrb.cone_radius);
7 l5 J. g" R0 l! H  printf("\TColor Index: %d\n", attrb.color);
  printf("\tFont Index: %d\n", attrb.font);
0 i+ ]/ g) G2 d  printf("\tDensity Index: %d\n", attrb.density);
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