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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% a1 H6 C8 k. f; M! q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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0 T2 {. t1 c5 @) L+ y- W$ o1 M  double pt1[3] = {0.0, 0.0, 0.0};
  double pt2[3] = {2.0, 2.0, 2.0};
1 G2 U3 n* n1 i: R: m' o  double pt3[3] = {-2.0,-2.0,-2.0};
6 K/ _, K& x  ~  double vect1[3] = {1.0, 1.0, 1.0};
+ o6 A, j; [( R6 b* z* p  UF_DISP_conehead_attrb_s attrb;
2 G3 C" q2 B0 v1 ~2 g- {( w5 _, O! ?  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
                   pt1, vect1, 1);
   /* Example to draw the vector with the base of its staff
( z8 V0 q; \- R0 k8 i' q      anchored at the origin so that the vector appears to point
      away from the origin
% s' U( ]% v+ w   */
' t0 I& ?; U% ]. }2 w1 N/ e9 n9 n) D3 i  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
- ~* @0 W8 S0 v7 x6 P                   pt2, vect1, 0);
- b# X5 C3 E! B0 [  UF_DISP_labeled_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
  f# X0 ^1 v6 }+ n: M, A4 G                           pt3, vect1, 0, "Normal");
5 }" z% C' B5 a! \" D  UF_DISP_get_conehead_attrb(&attrb);
9 t( p; \. n0 q% I! P  /* Use color index three */
  attrb.color = 3;
  /* Update the current attribute settings */
  UF_DISP_set_conehead_attrb(&attrb);
  printf("\nCurrent conhead display settings:\n");
9 I4 x* V& v+ V2 M$ d  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);
  printf("\TColor Index: %d\n", attrb.color);
1 t% ^( w$ ?/ U6 w5 D& Z  printf("\tFont Index: %d\n", attrb.font);
' J; U1 Q! f! }1 Q' z$ u  printf("\tDensity Index: %d\n", attrb.density);
% `1 H0 G, y% [1 I6 f7 W; P9 W0 d}
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