DtTextureVisitor.h

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


#pragma once

#include <vrvOsg/vrvOsg.h>

#include <osg/NodeVisitor>

#include <string>
#include <unordered_map>

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

namespace makVrv
{
   class DT_DLL_VRVOSG DtTextureVisitor : public osg::NodeVisitor
   {
   public:
      typedef std::unordered_map<int, std::string> TextureMap;

   public:
      DtTextureVisitor();

      virtual ~DtTextureVisitor();
   public:
      virtual void apply(osg::Node& node);

      virtual void apply(osg::Geode& geode);
#if 0
      virtual void apply(osg::ProxyNode& node);
#endif
      virtual const TextureMap& foundTextures() const;

   protected:

      virtual void checkTextures( osg::StateSet& ss, osg::Node& node );

      virtual void addTextureKeyToNode( osg::Node& node, int key );
   protected:

      TextureMap myFoundTextures;
      // used for uniqueness tests
      std::unordered_map<std::string, int> myFoundTextureNames;
      int myTextureKey;
   };

}