UF_SF_find_minimum_distance

ccx8301

UF_SF_find_minimum_distance这个函数怎么用啊？有没有例子。
: I% s: l$ y* A! u$ s我创建了两个正方体，来求两个实体的最小距离，好像不行，且我已经把，feature转换成body的tag了。代码如下：
  int ret;
, `  t9 V6 y3 h0 U# S  tag_t body_tag_1;
% L6 K5 J' p; B. }  tag_t body_tag_2;
7 }. H9 ?" U" v5 B5 h  tag_t cyl_tag;
  char *edge_lens[3]={"10","10","10"};
   ret=UF_MODL_create_block1(UF_UNITE ,origin,edge_lens,&cyl_tag);
$ C# r9 @3 _; l1 x$ M6 f  tag_t part_1;
( y& a0 [& X. N* @0 o  double origin1[3]={0,0,20};
, z4 E8 w* W- h3 ^" W7 O: ~  char h1[256]="20";
# ]* F* Y' o8 N" Q3 J3 ?2 J  char d1[256]="40";
0 D  U' Z. n3 c) C' q' R
  ret=UF_MODL_create_block1(UF_UNITE ,origin1,edge_lens,&part_1);
- ]! B8 F. l) O$ o) ?! G9 lUF_MODL_ask_feat_body(cyl_tag,&body_tag_1);
UF_MODL_ask_feat_body(part_1,&body_tag_2);
5 }3 n6 X. u) P5 L+ K  double point[3],point1[3];
& C# L; o' Q' B1 b/ p- m2 q  data.value.real=3.14;
  double min_dist;
   UF_SF_find_minimum_distance(body_tag_1,body_tag_2,&min_dist,point,point1);
  data.value.real=min_dist;
   UF_STYLER_set_value(dialog_id,&data);
谢谢！！！！