DtEnsureUniqueVirtualProgramVisitor.h

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/*****************************************************************************
 * Copyright (c) 2022 MAK Technologies, Inc.
 * All rights reserved.
 *****************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>

#include <osg/NodeVisitor>

#include <set>

namespace osg
{ 
   class Node;
   class Geode;
   class StateSet;
}

namespace makVrv
{
   class DtEnsureUniqueVirtualProgramVisitor : public osg::NodeVisitor
   {
   public:
      DtEnsureUniqueVirtualProgramVisitor();

      virtual ~DtEnsureUniqueVirtualProgramVisitor();

      DtEnsureUniqueVirtualProgramVisitor(const DtEnsureUniqueVirtualProgramVisitor& rhs) = delete;

      DtEnsureUniqueVirtualProgramVisitor& operator=(const DtEnsureUniqueVirtualProgramVisitor& rhs) = delete;
   public: // osg::NodeVisitor overrides

      virtual void apply(osg::Node& node) override;

      virtual void apply(osg::Geode& geode) override;

      virtual void apply(osg::StateSet* stateSet);

   protected:
      std::set< osg::StateSet* > myStateSets;
   };
}