source: osgVisual/trunk/include/dataIO/visual_dataIO.h @ 215

#pragma once
/* -*-c++-*- osgVisual - Copyright (C) 2009-2010 Torben Dannhauer
 *
 * This library is based on OpenSceneGraph, 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.
 *
 * osgVisual requires for some proprietary modules a license from the correspondig manufacturer.
 * You have to aquire licenses for all used proprietary modules.
 * 
 * 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 <osg/Notify>
#include <osg/Referenced>
#include <osg/ArgumentParser>

#include <osgViewer/Viewer>

// osgVisual specifiy includes
#include <visual_util.h>

// Cluster
#include <dataIO_clusterDummy.h>
#ifdef USE_CLUSTER_ASIO_TCP_IOSTREAM
        #include <dataIO_clusterAsioTcpIostream.h>
#endif
#ifdef USE_CLUSTER_ENET
        #include <dataIO_clusterENet.h>
#endif
        



//ExtLink 
#include <dataIO_extLinkDummy.h>
#ifdef USE_EXTLINK_VCL
        #include <dataIO_extLinkVCL.h>
#endif


// Slot and transportContainer definitions
#include <dataIO_slot.h>
#include <dataIO_transportContainer.h>

// XML Parser
#include <stdio.h>
#include <libxml/parser.h>
#include <libxml/tree.h>

// C++ stl libraries
#include <vector>




namespace osgVisual {

/**
 * \brief Zentrale Klasse für Datenanbindung des Sichtsystemnodes an das Gesamtsichtsystem bzw. dem Simulator.
 * 
 * Damit nur eine Klasse instantiiert werden kann, ist diese Klasse als Singleton realisiert.
 * 
 * 
 * @author Torben Dannhauer
 * @date  Nov 2009
 */ 
class visual_dataIO : public osg::Referenced
{
        #include <leakDetection.h>
private:
        class dataIO_eventCallback : public osg::NodeCallback
        {
        public: 
                /**
                 * \brief Constructor, for setting the member variables.
                 * 
                 * @param viewer_ : Pointer to the viewer.
                 * @param sceneCamera_ : Pointer to the scene camera.
                 */ 
                dataIO_eventCallback(visual_dataIO* dataIO_):dataIO(dataIO_){};

                /**
                 * \brief This function is execute d as callback during update traversal.
                 * 
                 */ 
                virtual void operator()(osg::Node* node, osg::NodeVisitor* nv);
        private:
                visual_dataIO* dataIO;
        };
        osg::ref_ptr<dataIO_eventCallback> eventCallback;

        class dataIO_finalDrawCallback : public osg::Camera::DrawCallback
        {
        public:
                /**
                 * \brief Constructor
                 * 
                 */ 
                dataIO_finalDrawCallback(visual_dataIO* dataIO_):dataIO(dataIO_){};
                
                /**
                 * \brief Operator executed at callback
                 * 
                 */ 
                virtual void operator () (const osg::Camera& camera) const;
        private:
                visual_dataIO* dataIO;
        };

        osg::ref_ptr<dataIO_finalDrawCallback> finalDrawCallback;

        /**
         * \brief Constructor: It is private to prevent creating instances via ptr* = new ..().
         * 
         */ 
        visual_dataIO();

        /**
         * \brief Copy-Constuctor: It is private to prevent getting instances via copying dataIO instance.
         * 
         * @param cc : Instance to copy from.
         */ 
        visual_dataIO(const visual_dataIO& cc);

        /**
         * \brief This function parses the XML config file for dataIO relevant parameters.
         * 
         * @return : True if parsing was successful.
         */ 
        bool processXMLConfiguration(); 

        /**
         * \brief Todo: required?
         * 
         * @return 
         */ 
        osg::Matrixd calcViewMatrix();

        /**
         * Pointer to the base class of the extLink implementation.
         */ 
        osg::ref_ptr<dataIO_extLink> extLink;

        /**
         * Pointer to the base class of the cluster implementation.
         */ 
        osg::ref_ptr<dataIO_cluster> cluster;

        /**
         * Referenced pointer to the applications viewer.
         */ 
        osg::ref_ptr<osgViewer::Viewer> viewer;

        /**
         * Referenced pointer transport contained user to transport the set of all slots to all rendering machines.
         */ 
        osg::ref_ptr<osgVisual::dataIO_transportContainer> slotContainer;

        /**
         * List of SLOT variables dataIO provides.
         */ 
        std::vector<dataIO_slot*> dataSlots;

        /**
         * Flag to indicate if dataIO is initialized.
         */ 
        bool initialized;

        /**
         * Curent clustermode of the application. Can be MASTER, SLAVE or STANDALONE.
         */ 
        osgVisual::dataIO_cluster::clustermode clusterMode;

        /**
         * XML config filename
         */ 
        std::string configFileName;

        /**
         * The eventCallback-class is friend to be able to work with all dataIO members without setters/getters.
         */ 
        friend class dataIO_eventCallback;

        /**
         *  The FinalDrawCallback-class is friend to be able to work with all dataIO members without setters/getters.
         */ 
        friend class dataIO_finalDrawCallback;

public:
        /**
         * \brief Public destructor to allow singleton cleanup from extern
         * 
         */ 
        ~visual_dataIO();

        /**
         * \brief This function returns an pointer to the singleton instance of dataIO. If no instance exist, it will be instantiated silently.
         * 
         * After instantiation, dataIO still needs to bei initiialized to configure working mode etc!
         * 
         * @return : Pointer to the instance. 
         */ 
        static visual_dataIO* getInstance();

        void init(osgViewer::Viewer* viewer_, std::string configFileName);
        void shutdown();
        bool isMaster(){if (clusterMode==osgVisual::dataIO_cluster::MASTER) return true; else return false;};
        bool isSlave(){if (clusterMode==osgVisual::dataIO_cluster::SLAVE) return true; else return false;};
        bool isStandalone(){if (clusterMode==osgVisual::dataIO_cluster::STANDALONE) return true; else return false;};

// SLOT Access functions
        void* getSlotPointer(std::string slotName_, osgVisual::dataIO_slot::dataDirection direction_, osgVisual::dataIO_slot::varType variableTyp_ );
        double getSlotDataAsDouble(std::string variableName_, osgVisual::dataIO_slot::dataDirection direction_ );
        std::string getSlotDataAsString(std::string variableName_, osgVisual::dataIO_slot::dataDirection direction_ );
        osgVisual::dataIO_slot* setSlotData(std::string variableName_, osgVisual::dataIO_slot::dataDirection direction_, std::string sValue_ );
        osgVisual::dataIO_slot* setSlotData(std::string variableName_, osgVisual::dataIO_slot::dataDirection direction_, double value_ );

        int getSlotNum() {return dataSlots.size();}

};


} // END namespace osgVisual