int type; //面的类型

double box[6];//x，y，z向最大，最小值

double radius;

double rad_data;

int norm_dir ;//法向

UF_MODL_ask_face_data(face,&type,center,

dir,box,&radius,&rad_data,&norm_dir);

16，UF_MODL_ask_minimum_dist_2//查询两物体间距离

double dis,accuracy;// accuracy:准确度

double point1[ 3 ]={0};

double point2[ 3 ]={0};

UF_CALL(UF_MODL_ask_minimum_dist_2 ( obj1, obj2, 0, NULL, 0, NULL,

& dis, point1, point1, &accuracy ));