// Filename: geomCacheEntry.I
// Created by:  drose (21Mar05)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001 - 2004, Disney Enterprises, Inc.  All rights reserved
//
// All use of this software is subject to the terms of the Panda 3d
// Software license.  You should have received a copy of this license
// along with this source code; you will also find a current copy of
// the license at http://etc.cmu.edu/panda3d/docs/license/ .
//
// To contact the maintainers of this program write to
// panda3d-general@lists.sourceforge.net .
//
////////////////////////////////////////////////////////////////////


////////////////////////////////////////////////////////////////////
//     Function: GeomCacheEntry::Constructor
//       Access: Public
//  Description: 
////////////////////////////////////////////////////////////////////
INLINE GeomCacheEntry::
GeomCacheEntry() {
#ifndef NDEBUG
  _next = NULL;
  _prev = NULL;
#endif
}

////////////////////////////////////////////////////////////////////
//     Function: GeomCacheEntry::remove_from_list
//       Access: Private
//  Description: Removes a GeomCacheEntry record from the
//               doubly-linked list.
////////////////////////////////////////////////////////////////////
INLINE void GeomCacheEntry::
remove_from_list() {
  nassertv(_prev->_next == this && _next->_prev == this);
  _prev->_next = _next;
  _next->_prev = _prev;
#ifndef NDEBUG
  _next = NULL;
  _prev = NULL;
#endif
}

////////////////////////////////////////////////////////////////////
//     Function: GeomCacheEntry::insert_before
//       Access: Private
//  Description: Adds a GeomCacheEntry record before the indicated
//               node in the doubly-linked list.
////////////////////////////////////////////////////////////////////
INLINE void GeomCacheEntry::
insert_before(GeomCacheEntry *node) {
  nassertv(node->_prev->_next == node && node->_next->_prev == node);
  nassertv(_prev == (GeomCacheEntry *)NULL &&
           _next == (GeomCacheEntry *)NULL);
  _prev = node->_prev;
  _next = node;
  _prev->_next = this;
  node->_prev = this;
}

INLINE ostream &
operator << (ostream &out, const GeomCacheEntry &entry) {
  entry.output(out);
  return out;
}