DtGlStudioDrawable.h

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/******************************************************************************
** Copyright (c) 2021 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvGlStudioShared/DtGlStudioShared.h>
#include <vrvGlStudioShared/DtOsgGlStudioCockpit.h>

#include <vrvCore/DtUniqueID.h>
#include <osg/Drawable>

#include <vrvGraphicsUtils/DtGlRenderToTexture.h>

//forward defs
class DtString;

namespace osgGA
{
   class GUIEventAdapter;
}

namespace osgViewer
{
   class Viewer;
}
namespace disti
{
   class ComponentBase;
   class DisplayEvent;
}

namespace makVrv 
{ 

class DtDe;
class DtMouseEvent;

class DtGlRenderTexture;
class DtGlScreenQuad;

class DT_DLL_VRVGLSTUDIOSHARED DtGlStudioDrawable : public osg::Drawable
{
public:
   DtGlStudioDrawable();

   DtGlStudioDrawable(disti::ComponentBase *component);

   DtGlStudioDrawable(const DtGlStudioDrawable& other, 
                      const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);

   virtual ~DtGlStudioDrawable();

   virtual osg::Object* cloneType() const;
   virtual osg::Object* clone(const osg::CopyOp& copyop) const;
   virtual bool isSameKindAs(const osg::Object* obj) const;
   virtual const char* libraryName() const;
   virtual const char* className() const;

   virtual bool loadLiveComponent(const std::string& fileName, const std::string& className);

   virtual void destroyComponent();

   virtual void setComponent(disti::ComponentBase* comp);

   virtual disti::ComponentBase* component();

   virtual bool handleMouseInput(const DtMouseEvent& ea);

   virtual osg::BoundingBox computeBoundingBox() const;

   virtual bool supports(osg::PrimitiveFunctor&) const;

   virtual void accept(osg::PrimitiveFunctor& functor) const;

   virtual void update(unsigned int frameNumber);

   virtual bool cull(osg::NodeVisitor* visitor, osg::Drawable* drawable, osg::State* state=NULL) const;

   virtual void drawImplementation(osg::RenderInfo& state) const;

   virtual void setProperty(const std::string& prop, const std::string& val);

   virtual void setDe(DtDe* de);
   virtual void setCockpitObject(DtOsgGlStudioCockpit* cockpitObject);

   virtual void releaseGLObjects(osg::State* state=0) const;

   virtual void dirtyRenderObjects();

protected:

   virtual void initQuadRendering(const osg::Camera* camera) const;

   virtual void deinitQuadRendering() const;

   virtual void initRTT(const osg::Camera* camera) const;

   virtual void deinitRTT() const;

   virtual void slot_reloadShaders();

   virtual float calculateHdrOutputScale(const osg::Camera* camera) const;

   virtual bool calculateSkyEnabled(const osg::Camera* camera) const;

protected:

   DtOsgGlStudioCockpit* myCockpitObject;
   disti::ComponentBase* myComponent;
   DtDe* myDe;

   mutable std::map<const osg::Camera *, DtGlRenderTexture*> myGLRenderTextures;
   mutable std::map<const osg::Camera *, DtGlScreenQuad*> myGLScreenQuads;
   
   mutable osg::ref_ptr<osg::Program> myProgram;

   mutable std::vector<osg::Vec3> myBoundingBoxVertices;

   DtSignalConnectionManager myConnections;

   unsigned int myLastUpdateFrameNumber;
};

} //makVrv::