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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) D: e$ ?; ]9 P+ v2 A/ R这功能其实很好用，比如选择面，自动显示面的法线等等。

$ ^/ G" Y' q! U" Q: A1 t3 f5 Rstatic void do_UGopen_api(void)
{
  double pt1[3] = {0.0, 0.0, 0.0};
! x. |0 |9 P+ i( s8 `/ @% `  D  double pt2[3] = {2.0, 2.0, 2.0};
1 }+ I  T, J# `  C. ]0 w  double pt3[3] = {-2.0,-2.0,-2.0};
  double vect1[3] = {1.0, 1.0, 1.0};
# I- S6 R# }+ c4 `4 Y7 K8 y  UF_DISP_conehead_attrb_s attrb;
0 |2 u. ?4 p/ e" t3 q0 T' P" v  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. S$ z- E" M: g# o8 f      away from the origin
8 ^7 K( h% F6 m: _  b( ?8 j1 x   */
9 t  w5 H' L- T! K; I7 [  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
                   pt2, vect1, 0);
( C7 \6 u- M6 L- k: E  UF_DISP_labeled_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
                           pt3, vect1, 0, "Normal");
+ z! ~3 B( b, ~  UF_DISP_get_conehead_attrb(&attrb);
7 d$ ]) V/ y, w, H" Z7 Z9 S, q  /* Use color index three */
  attrb.color = 3;
  /* Update the current attribute settings */
/ @) M. m1 T, X6 ~2 o* i  UF_DISP_set_conehead_attrb(&attrb);
3 c/ x( g1 A+ z: _  printf("\nCurrent conhead display settings:\n");
  printf("\tLength of Staff: %g\n", attrb.staff_length);
8 E; p# \# y& ?' l0 q: F: F  printf("\tTotal Length: %g\n", attrb.total_length);
  printf("\tRadius of Cone Base: %g\n", attrb.cone_radius);
  printf("\TColor Index: %d\n", attrb.color);
( l6 m& S7 U6 P: p) s3 h  printf("\tFont Index: %d\n", attrb.font);
* f+ W( F2 V8 g' d& ]. Y# Y  printf("\tDensity Index: %d\n", attrb.density);
}

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