UGNX二次开发源码分享：关于显示UG NX临时箭头功能

admin

9 S" |' q* q3 _$ j5 q6 d
这功能其实很好用，比如选择面，自动显示面的法线等等。
, {: ]# o0 P0 x2 ?% X8 j5 U, j5 Y
1 i& s" E' x# h" wstatic void do_UGopen_api(void)
/ z9 @& M& Y6 H{
5 T* v# C- Z# R1 V; t  double pt1[3] = {0.0, 0.0, 0.0};
  double pt2[3] = {2.0, 2.0, 2.0};
0 a# N. P) {2 o4 ^, T  double pt3[3] = {-2.0,-2.0,-2.0};
  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);
% K% p4 [% @2 A" C5 E# w   /* Example to draw the vector with the base of its staff
/ x; j/ O0 ~/ R6 R$ |" x  N& V      anchored at the origin so that the vector appears to point
$ g3 L" ?% p4 U  [8 Y; X( Y      away from the origin
   */
, G1 R% `0 `9 ^7 @6 M  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
6 r! e' A- U0 e" l                   pt2, vect1, 0);
  UF_DISP_labeled_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
                           pt3, vect1, 0, "Normal");
! n+ s2 h' t0 s) t$ K  UF_DISP_get_conehead_attrb(&attrb);
2 f- H8 C# j  w# k" @4 ~  /* Use color index three */
) T' Z' Y" g" L3 [8 A  S0 m  attrb.color = 3;
3 {, O5 A! [) I) l  /* Update the current attribute settings */
  UF_DISP_set_conehead_attrb(&attrb);
* V; O& a0 y+ c  F3 Q  printf("\nCurrent conhead display settings:\n");
  printf("\tLength of Staff: %g\n", attrb.staff_length);
+ g- V. l; M3 q5 ]; z  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);
  printf("\tFont Index: %d\n", attrb.font);
  printf("\tDensity Index: %d\n", attrb.density);
% [  q" [9 `6 E7 J}

- M- L5 {& b4 G3 t# F: K2 S9 [. R& ^$ n