source: osgVisual/include/vista2D/visual_vista2D.h @ 32

#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 "VistaView.h"

#include <osg/Drawable>
#include <osg/Geode>
#include <osg/Projection>
#include <osg/MatrixTransform>
#include <osg/CoordinateSystemNode>

#include <osgDB/FileUtils>


namespace osgVisual
{

/**
 * \brief This class integrates Vista2D by Wetzel Technology into OSG.
 * 
 * It wraps vista2D's OpenGL interface to be usable as a standart OSG Node. The Vista2D nodekit performs auto-linking
 * againt the Vista2D library, therefore only three shared libraries have to be copied to the binary folder of the project.
 * 
 * Vista2D ist a software to design HID. This Nodekit enables OSG to display Vista2D project files.
 * 
 * Please copy the following files to the binary folder of you application if you intend to use this nodekit:
 * libView.dll
 * fontLib.dll
 * freetype6.dll
 * 
 * The implementation of this class is based on osg::Drawable. The drawimplementations contains the Vista2D wrap.
 *  
 * @author Torben Dannhauer
 * @date  Sep 2009
 */ 
class visual_vista2D : public osg::Drawable
{
public:
        /**
         * \brief Construtor: Creates a Vista2D environment which should be wrapt by this node.
         * 
         */ 
        visual_vista2D(void);

        /**
         * \brief Empty destructor.
         * 
         */ 
        ~visual_vista2D(void);

        /**
         * \brief This static function must be called to instantiate a vista2D project.
         * 
         * @param vista2DFilename_ : Vista2D project file to display.
         * @param sceneGraphRoot_ : Scenegraph to add the vista2D note as child.
         * @return : True if successful.
         */ 
        static bool createVistaOverlay( std::string vista2DFilename_, osg::CoordinateSystemNode *sceneGraphRoot_ );

        /**
         * \brief This function is requiered by subclassing osg::Drawable.
         * 
         * @return : Cloned object.
         */ 
        osg::Object* cloneType() const;

        /**
         * \brief This function is requiered by subclassing osg::Drawable.
         * 
         * @param : Copyoperator how to copy the object
         * @return : Cloned object.
         */ 
        osg::Object* clone(const osg::CopyOp&) const;

private:
        /**
         * \brief This function initialized the visual_vista2D object after instantiation by createVistaOverlay()
         * 
         * @param vista2DFilename_ : Vista2D project file to instantiate.
         */ 
        void init(std::string vista2DFilename_);

        /**
         * \brief This function implements the pure OpenGL draw by calling Vista2D's draw funtion.
         * 
         * Because Visrta2D manipulates OpenGLs stateset, this function saves the
         * OSG statset at the beginning and restores it after the drawing of Vista2D 
         * 
         * @param renderInfo : Renderinfo of the drawing
         */ 
        void drawImplementation(osg::RenderInfo& renderInfo) const;
        
        /**
         * Pointer to Vista2D's view instance.
         */ 
        Vista2D::VistaView* view;
}; 

}       // END NAMESPACE