//
//  Filename         : ScenePrettyPrinter.h
//  Author(s)        : Stephane Grabli, Emmanuel Turquin
//  Purpose          : Class to display textual information
//                     about a scene graph.
//  Date of creation : 26/04/2003
//
///////////////////////////////////////////////////////////////////////////////


//
//  Copyright (C) : Please refer to the COPYRIGHT file distributed 
//   with this source distribution. 
//
//  This program is free software; you can redistribute it and/or
//  modify it under the terms of the GNU General Public License
//  as published by the Free Software Foundation; either version 2
//  of the License, or (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
//
///////////////////////////////////////////////////////////////////////////////

#ifndef  SCENE_PRETTY_PRINTER_H
# define SCENE_PRETTY_PRINTER_H

# include <iostream>
# include <fstream>
# include <string>
# include "SceneVisitor.h"

using namespace std;

class ScenePrettyPrinter : public SceneVisitor
{
public:

  ScenePrettyPrinter(const string filename = "SceneLog.txt")
    : SceneVisitor() {
    if (!filename.empty())
      _ofs.open(filename.c_str());
    if (!_ofs.is_open())
      cerr << "Warning, unable to open file \"" << filename << "\"" << endl;
    _space = "";
  }

  virtual ~ScenePrettyPrinter() {
    if (_ofs.is_open())
      _ofs.close();
  }


  //
  // visitClass methods
  //
  //////////////////////////////////////////////

  VISIT_DECL(Node)
  VISIT_DECL(NodeShape)
  VISIT_DECL(NodeGroup)
  VISIT_DECL(NodeLight)
  VISIT_DECL(NodeDrawingStyle)
  VISIT_DECL(NodeTransform)

  VISIT_DECL(LineRep)
  VISIT_DECL(OrientedLineRep)
  VISIT_DECL(TriangleRep)
  VISIT_DECL(VertexRep)
  VISIT_DECL(IndexedFaceSet)

  virtual void visitNodeShapeBefore(NodeShape&);
  virtual void visitNodeShapeAfter(NodeShape&);
  virtual void visitNodeGroupBefore(NodeGroup&);
  virtual void visitNodeGroupAfter(NodeGroup&);
  virtual void visitNodeDrawingStyleBefore(NodeDrawingStyle&);
  virtual void visitNodeDrawingStyleAfter(NodeDrawingStyle&);
  virtual void visitNodeTransformBefore(NodeTransform&);
  virtual void visitNodeTransformAfter(NodeTransform&);

 protected:
  
  void increaseSpace()
  {
    _space += "  ";
  }

  void decreaseSpace()
  {
    _space.erase(0, 2);
  }

 private:

  ofstream	_ofs;
  string	_space;
};

#endif // SCENE_PRETTY_PRINTER_H