/* Last edited on 2011-09-13 02:08:24 by stolfilocal */
/* _*_ latin-1 _*_  */
/* Bezier model of human body */
/* Coordinate axes are X = forwards, Y = right, Z = up. */

#ifndef bzb_limb_H
#define bzb_limb_H

#include <bzb_patch.h>

typedef struct bzb_model_limb_t
  { int nlip;                       /* Number of patches in lip ring. */
    bzb_cquad_t **lip;              /* Control quads for first ring. */
    bzb_fork_type_t ftype;          /* Fork type. */
    int nsub;                       /* Number of sub-limbs. */
    struct bzb_model_limb_t **sub;  /* Sub-limbs. */
  } bzb_model_limb_t;
  /* A branched tube structure made of Bézier patches joined with 
    C1 continuity.  
    
    The tube is a ring of {nlip} Bézier patches, whose proximal edge 
    is open and unspecified, and whose distal edge is attached to zero or more sub-limbs.
    
    Fields {lip[0..nlip]} are the control quads for the first ring.  Control points
    {lip[j].cp[0]} and {lip[j].cp[2]} lie closer to the free edge,
    {lip[j].cp[1]} and {lip[j].cp[3]} lie closer to thesub-limbs.  
    Control points {lip[j].cp[2]} and {lip[j].cp[3]} are the ones
    closest {lip[j+1].cp[0]} and {lip[j+1].cp[1]}, respectively.
    
    Fields {sub[0..nsub]} are the sub-limbs. If {nsub} is zero, the
    limb is a cap; in that case {lip[j].cp[1]} and {lip[j].cp[3]} 
    are irrelevant.  Othwewise, the limbs are connected to the 
    ring according to the {ftype} code. */ 

#endif