DtCellIndirectGeo.h

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/******************************************************************************
** Copyright (c) 2019 VT-MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>

#include <vrvOsg/DtOsgThreadingUtils.h>
#include <vrvOsg/DtIndirectSwitchManager.h>
#include <vrvOsg/DtIndirectLodManager.h>

#include <vrvIndirectRendering/DtGeometrySpecification.h>

#include <osg/Matrixd>
#include <osg/Group>

#include <tbb/atomic.h>

#define DTCELLINDIRECTGEO_CONSTRUCT_DESTRUCT_DEBUG 0

namespace makVrv
{
   class DtDe;
   class DtIndirectGeometryCreator;
   class DtIndirectGeoComputeBoundCallbackCreator;
   class DtIndirectVisitorControlGroupCreator;
   class DtCullShaderConfig;
   class DtIndirectModelsContainer;
   class DtIndirectGeometry;
   struct DtIndirectFadeParameters;

   class DT_DLL_VRVOSG DtCellIndirectGeo
   {
   public:
      DtCellIndirectGeo(DtDe& de,
         DtIndirectGeometryCreator& indirectGeometryCreator,
         DtIndirectGeoComputeBoundCallbackCreator& indirectGeoComputeCallbackCreator,
         DtIndirectVisitorControlGroupCreator& indirectGeoIntersectionGroupCreator,
         bool includeIntersectionGeoInNodePath,
         bool terrainPatch,
         const DtIndirectFadeParameters& fadeParameters);

      virtual ~DtCellIndirectGeo();

   private:
      DtCellIndirectGeo();
      DtCellIndirectGeo(const DtCellIndirectGeo &other);
      DtCellIndirectGeo &operator=(const DtCellIndirectGeo &other);

   public:

      virtual void setModelsContainer(DtIndirectModelsContainer* modelsContainer, bool ownsModelsContainer);

      virtual void setCullShaderConfig(const DtCullShaderConfig& cullShaderConfig);

      virtual void setParent(const osg::Group* parent);


      virtual const osg::BoundingBoxd& boundingBox(void) const;

      virtual const DtIndirectGeometry* indirectGeometry(void) const;
      virtual DtIndirectGeometry* indirectGeometry(void);

      virtual osg::Group*  indirectIntersectionGroup();

   protected:
      virtual void expandBoundingBox(const osg::Node* modelNode, const osg::Matrixd& instanceXForm);

      virtual void addInstanceInternal(const osg::Matrixd& instanceXForm,
         const int modelId,
         const osg::Node* modelNode,
         const osg::NodePath& nodePath,
         const DtIndirectLodManager::DequeIndirectLodInfos& lodInfo = DtIndirectLodManager::DequeIndirectLodInfos(),
         bool addToIntersectionGroup = true,
         const DtIndirectSwitchManager::DequeNodeSwitchInfoPairs& switchStack =
         DtIndirectSwitchManager::DequeNodeSwitchInfoPairs());

   protected:
      DtIndirectModelsContainer* myModelsContainer;
      bool myOwnsModelsContainer;

#if DTCELLINDIRECTGEO_CONSTRUCT_DESTRUCT_DEBUG
      static tbb::atomic<int> myBaseRefCount;
#endif

      osg::ref_ptr<DtIndirectGeometry> myIndirectGeometry;
      osg::ref_ptr<osg::Group> myIndirectGeoIntersectionGroup;

      osg::BoundingBoxd myBoundingBox;
      mutable Threading::Mutex myMutableBoundingBoxMutex;

      DtDe& myDe;
      bool myFirstInstance;

      DtIndirectVisitorControlGroupCreator& myIndirectGeoIntersectionGroupCreator;
      bool myIncludeIntersectionGeoInNodePath;
   };
}