// Filename: eggGroupNode.I
// Created by:  drose (16Jan99)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) Carnegie Mellon University.  All rights reserved.
//
// All use of this software is subject to the terms of the revised BSD
// license.  You should have received a copy of this license along
// with this source code in a file named "LICENSE."
//
////////////////////////////////////////////////////////////////////


////////////////////////////////////////////////////////////////////
//     Function: EggGroupNode::is_right
//       Access: Private, Static
//  Description: Returns true if the 2-d v1 is to the right of v2.
////////////////////////////////////////////////////////////////////
INLINE bool EggGroupNode::
is_right(const LVector2d &v1, const LVector2d &v2) {
  return (v1[0] * v2[1] - v1[1] * v2[0]) > 0;
}

////////////////////////////////////////////////////////////////////
//     Function: EggGroupNode::TBNVertexValue::operator <
//       Access: Public
//  Description: 
////////////////////////////////////////////////////////////////////
bool EggGroupNode::TBNVertexValue::
operator < (const TBNVertexValue &other) const {
  if (_facing != other._facing) {
    return (int)_facing < (int)other._facing;
  }
  int compare = _pos.compare_to(other._pos);
  if (compare != 0) {
    return compare < 0;
  }
  compare = _normal.compare_to(other._normal);
  if (compare != 0) {
    return compare < 0;
  }
  compare = _uv.compare_to(other._uv);
  if (compare != 0) {
    return compare < 0;
  }
  return _uv_name < other._uv_name;
}