请教UF_MODL_create_rect_slot的用法：

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请那位大侠讲解一下UF_MODL_create_rect_slot的用法：
extern int UF_MODL_create_rect_slot (
double location[ ],  
double tool_axis[ ],  
double direction[ ],  
char * width,  
char * depth,  
char * distance,  
tag_t face_li,  
tag_t face_t1,  
tag_t face_t2,  
tag_t * feature_tag );
  
double  location[ ] Input Rectangular slot location.  
double  tool_axis[ ] Input Rectangular slot tool axis.  
double  direction[ ] Input Rectangular slot direction.  
char *  width Input Rectangular slot width.  
char *  depth Input Rectangular slot depth.  
char *  distance Input Rectangular slot distance.  
tag_t  face_li Input Face for the RPO constraint.  
tag_t  face_t1 Input Face for thru face 1.  
tag_t  face_t2 Input Face for thru face 2.  
tag_t *  feature_tag Output Feature object identifier of created rectangular slot  
里面的location[ ]，tool_axis[ ]，direction[ ]怎么取得呀

KangKang

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