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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1 _- W4 {0 Z/ u# b; Q5 W这功能其实很好用，比如选择面，自动显示面的法线等等。
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0 P# v  G1 S  x+ Pstatic void do_UGopen_api(void)
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5 I' G  I; v6 h2 c" ~  double pt1[3] = {0.0, 0.0, 0.0};
$ I! i7 o( r: e- @5 a2 E' ?  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};
  UF_DISP_conehead_attrb_s attrb;
" X9 r7 i$ W  i4 s9 Q) n  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
1 y% [- t' Y3 W% ^                   pt1, vect1, 1);
% [- C+ C! h5 F( i: w2 t5 \( _   /* Example to draw the vector with the base of its staff
" a) u8 T2 b* U7 l' W) |' G1 u      anchored at the origin so that the vector appears to point
      away from the origin
   */
3 j* q. s* D. [# b8 {  UF_DISP_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
                   pt2, vect1, 0);
" U/ Z2 L, }  l/ e  UF_DISP_labeled_conehead(UF_DISP_ALL_ACTIVE_VIEWS,
: f$ ]  ~# C& c3 x, B. m                           pt3, vect1, 0, "Normal");
  UF_DISP_get_conehead_attrb(&attrb);
  /* Use color index three */
  attrb.color = 3;
: D1 Q( ?6 g* K9 E8 N) D  /* Update the current attribute settings */
2 x& M0 G$ x3 @  UF_DISP_set_conehead_attrb(&attrb);
  printf("\nCurrent conhead display settings:\n");
/ [% e# K8 H: R! Z  printf("\tLength of Staff: %g\n", attrb.staff_length);
4 \8 S) t9 Q: f5 D' S$ \  printf("\tTotal Length: %g\n", attrb.total_length);
: H) g) w2 [( e$ Q8 u( m3 A. ~  printf("\tRadius of Cone Base: %g\n", attrb.cone_radius);
  printf("\TColor Index: %d\n", attrb.color);
: k, p" v( X3 j. G2 g  printf("\tFont Index: %d\n", attrb.font);
5 k" p" b6 K+ }$ p( ?5 ?  printf("\tDensity Index: %d\n", attrb.density);
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