BaseNode.cc

/*===========================================================================*\
 *                                                                           *
 *                              OpenFlipper                                  *
 *      Copyright (C) 2001-2009 by Computer Graphics Group, RWTH Aachen      *
 *                           www.openflipper.org                             *
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 *---------------------------------------------------------------------------*
 *  This file is part of OpenFlipper.                                        *
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 *  OpenFlipper is free software: you can redistribute it and/or modify      *
 *  it under the terms of the GNU Lesser General Public License as           *
 *  published by the Free Software Foundation, either version 3 of           *
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 *  following exceptions:                                                    *
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 *  If other files instantiate templates or use macros                       *
 *  or inline functions from this file, or you compile this file and         *
 *  link it with other files to produce an executable, this file does        *
 *  not by itself cause the resulting executable to be covered by the        *
 *  GNU Lesser General Public License. This exception does not however       *
 *  invalidate any other reasons why the executable file might be            *
 *  covered by the GNU Lesser General Public License.                        *
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 *  OpenFlipper is distributed in the hope that it will be useful,           *
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 *  You should have received a copy of the GNU LesserGeneral Public          *
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\*===========================================================================*/

/*===========================================================================*\
 *                                                                           *
 *   $Revision: 6743 $                                                       *
 *   $Author: moebius $                                                      *
 *   $Date: 2009-08-05 11:03:10 +0200 (Mi, 05. Aug 2009) $                   *
 *                                                                           *
\*===========================================================================*/




//=============================================================================
//
//  CLASS BaseNode - IMPLEMENTATION
//
//=============================================================================


//== INCLUDES =================================================================

#include "BaseNode.hh"
#include "DrawModes.hh"


//== NAMESPACES ===============================================================

namespace ACG {
namespace SceneGraph {


//== IMPLEMENTATION ==========================================================


unsigned int BaseNode::last_id_used__ = 0;


//----------------------------------------------------------------------------


BaseNode::
BaseNode(BaseNode* _parent, std::string _name)
  : parent_(_parent),
    name_(_name),
    status_(Active),
    drawMode_(DrawModes::DEFAULT),
    depth_func_(GL_LESS),
    pickingEnabled_(true),
    dirty_ (false),
    traverseMode_ (BaseNode::NodeFirst)
{
  id_ = ++last_id_used__;
  if (_parent!=0) _parent->push_back(this);

  DrawModes::initializeDefaultDrawModes();
}


//----------------------------------------------------------------------------


BaseNode::
BaseNode(BaseNode* _parent, BaseNode* _child, std::string _name)
  : parent_(_parent),
    name_(_name),
    status_(Active),
    drawMode_(DrawModes::DEFAULT)
{
  assert(_parent != 0 && _child != 0);

  id_ = ++last_id_used__;

  _parent->push_back(this);
  _child->set_parent(this);

  DrawModes::initializeDefaultDrawModes();
}


//----------------------------------------------------------------------------


BaseNode::~BaseNode()
{
  // remove myself from parent's children
  if (parent_!=0)
  {
    ChildIter me(parent_->find(this));
    assert(me != parent_->childrenEnd());
    parent_->remove(me);
  }


  // remove me (as parent) from my children
  for (BaseNode::ChildIter cIt=childrenBegin(); cIt!=childrenEnd(); ++cIt)
    (*cIt)->parent_ = 0;
}


//----------------------------------------------------------------------------


void
BaseNode::
set_parent(BaseNode* _parent)
{
  if (parent_)
  {
    ChildIter me(parent_->find(this));
    if (me != parent_->childrenEnd())
      parent_->remove(me);
  }

  parent_ = _parent;

  if (parent_)
  {
    ChildIter me(parent_->find(this));
    if (me == parent_->childrenEnd())
      parent_->push_back(this);
  }
}


//----------------------------------------------------------------------------


void
BaseNode::delete_subtree()
{
  while (!children_.empty())
    children_.front()->delete_subtree();
  delete this;
}

//----------------------------------------------------------------------------

void
BaseNode::enterPick(GLState& _state, PickTarget /*_target*/, unsigned int _drawMode)
{
  enter (_state, _drawMode);
}

//----------------------------------------------------------------------------

void
BaseNode::leavePick(GLState& _state, PickTarget /*_target*/, unsigned int _drawMode)
{
  leave (_state, _drawMode);
}

//=============================================================================
} // namespace SceneGraph
} // namespace ACG
//=============================================================================