DtOsgEarthMemoryFeatureSource.h

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/****************************************************************************** 
** Copyright (c) 2020 MAK Technologies, Inc. 
** All rights reserved. 
******************************************************************************/ 

#pragma once

#include <vrvOsg/vrvOsg.h>

#include <vrvUtil/DtVirtualBaseClassCreator.h>

#include <osgEarth/FeatureSource>
#include <osgEarth/Feature>
#include <osgEarth/Threading>

#include <unordered_map>

namespace osgEarth
{
   class LandCoverDictionary;
}

namespace makVrv
{
   class DT_DLL_VRVOSG DtOsgEarthMemoryFeatureSource : public osgEarth::FeatureSource
   {
   public:
       class DT_DLL_VRVOSG Options : public osgEarth::FeatureSource::Options {
           META_LayerOptions(makVrv, Options, osgEarth::FeatureSource::Options);
           void fromConfig(const osgEarth::Config&) { }
       };

   public:
       META_Layer(makVrv, DtOsgEarthMemoryFeatureSource, Options, osgEarth::FeatureSource, DtOsgEarthMemoryFeatureSource);

      ~DtOsgEarthMemoryFeatureSource();

   protected:
      virtual void init() override;

      virtual osgEarth::Status openImplementation() override;

      virtual osgEarth::FeatureCursor* createFeatureCursorImplementation(
          const osgEarth::Query& query,
          osgEarth::ProgressCallback* progress) const override;

   public:

      DtOsgEarthMemoryFeatureSource(const DtOsgEarthMemoryFeatureSource &other) = delete;
      DtOsgEarthMemoryFeatureSource &operator=(const DtOsgEarthMemoryFeatureSource &other) = delete;

      void setFeatures(const osgEarth::FeatureList& features);

   public: // FeatureSource API

      virtual const osgEarth::GeoExtent& getExtent() const override;

      virtual bool insertFeature(osgEarth::Feature* feature) override;

      virtual bool deleteFeature(osgEarth::FeatureID fid) override;

      virtual bool deleteAllFeatures();

      virtual bool isWritable() const override;

   protected:
      mutable osgEarth::Threading::Mutex myMutex;
      osgEarth::GeoExtent myExtent;
      osgEarth::FeatureList myFeatures;
      std::atomic_int myFidgen;

      void recalculateExtent();
   };
}