text: /* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2008 Robert Osfield 
   *
   * This library is open source and may be redistributed and/or modified under  
   * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
   * (at your option) any later version.  The full license is in LICENSE file
   * included with this distribution, and on the openscenegraph.org website.
   * 
   * This library 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 
   * OpenSceneGraph Public License for more details.
  */
  
  
  #include "Exception.h"
  #include "Locator.h"
  #include "Object.h"
  #include "EllipsoidModel.h"
  
  using namespace ive;
  
  void Locator::write(DataOutputStream* out)
  {
      // Write Locator's identification.
      out->writeInt(IVELOCATOR);
  
      // If the osg class is inherited by any other class we should also write this to file.
      osg::Object*  object = dynamic_cast<osg::Object*>(this);
      if (object)
          ((ive::Object*)(object))->write(out);
      else
          throw Exception("Layer::write(): Could not cast this osgLayer::Layer to an osg::Object.");
          
      out->writeInt(getCoordinateSystemType());
      out->writeString(getFormat());
      out->writeString(getCoordinateSystem());
      
      out->writeBool(getEllipsoidModel()!=0);
      if(getEllipsoidModel())
      {
          ((ive::EllipsoidModel*)(getEllipsoidModel()))->write(out);
      }
      
      out->writeBool(getDefinedInFile());
      out->writeBool(getTransformScaledByResolution());
      out->writeMatrixd(getTransform());
  }
  
  void Locator::read(DataInputStream* in)
  {
      // Peek on Locator's identification.
      int id = in->peekInt();
      if(id != IVELOCATOR)
      {
          throw Exception("Locator::read(): Expected Locator identification.");
      }
      
      // Read Locator's identification.
      id = in->readInt();
  
      // If the osg class is inherited by any other class we should also read this from file.
      osg::Object*  object = dynamic_cast<osg::Object*>(this);
      if(object)
          ((ive::Object*)(object))->read(in);
      else
          throw Exception("Locator::read(): Could not cast this osgLocator::Locator to an osg::Group.");
  
      setCoordinateSystemType(static_cast<osgTerrain::Locator::CoordinateSystemType>(in->readInt()));
      setFormat(in->readString());
      setCoordinateSystem(in->readString());
      
      bool readEllipsoidModel = in->readBool();
      if (readEllipsoidModel)
      {
          osg::EllipsoidModel* em = new osg::EllipsoidModel();
          ((ive::EllipsoidModel*)(em))->read(in);
          setEllipsoidModel(em);
      }
      
      setDefinedInFile(in->readBool());
      setTransformScaledByResolution(in->readBool());
      setTransform(in->readMatrixd());
  
  }
  