DtInstanceContainer.h

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


#pragma once

#include <vrvIndirectRendering/vrvIndirectRendering.h>
#include <vrvIndirectRendering/DtPerGeomInstance.h>
#include <vrvIndirectRendering/DtIndirectOffsetAndSize.h>

#include <vrvGraphicsUtils/DtMatrix4.h>

#include <unordered_map>

namespace makVrv
{
   typedef std::vector<Matrix4_64> VectorMatrix4_64;
   
   struct DtAggregateModelInfo;

   class DT_DLL_VRVINDIRECTRENDERING DtInstanceContainer
   {
   public:
      DtInstanceContainer();

      virtual ~DtInstanceContainer();

   private:
      DtInstanceContainer(const DtInstanceContainer&) = delete;
      DtInstanceContainer& operator=(const DtInstanceContainer&) = delete;

   public:

      virtual void addInstance(const int modelId
         , const DtPerGeomInstances& perGeomInstancesTemplate
         , int geometryLocations, int lightSourceCount
         , int &outPerGeomTemplateOffset, int& outNumGeoms, int& outInstanceIndex);

      virtual bool removeInstance(int instanceId);

      virtual bool hasInstance(int instanceId) const;

      virtual const DtReusablePerGeomInstances& perGeomInstances(void) const;
      
      virtual DtReusablePerGeomInstances& perGeomInstances(void);

      virtual void printPerGeomInstances() const;

      virtual int numValidInstances(void) const;

      virtual int numUniqueGeometriesForModel(int modelId) const;

      virtual int numUniqueGeometries() const;

      virtual bool instanceEverAdded(void) const;

      virtual const DtIndirectOffsetAndSize& perGeomInstanceOffsetAndSize(int instanceId) const;


      virtual void incrementNumUniqueGeometries(int number);

      virtual const std::vector<int>& modelAddedOrder() const;
      
      virtual unsigned int maxNumLightSources() const;

   protected:
      MapIntToInt myModelIdToGeomOffset;
      SetInts myUniqueModels;
      VectorInts myModelAddedOrder;
      MapIntToInt myModelIdToGeometryCount;

      int myNumUniqueGeometries;

      typedef std::unordered_map<int, DtIndirectOffsetAndSize> MapInstanceIdToPerGeomInstanceOffsetAndSize;
      MapInstanceIdToPerGeomInstanceOffsetAndSize myMapInstanceIdToPerGeomInstanceOffsetAndSize;
      
      typedef std::unordered_map<int, int> MapInstanceIdToNumLightSources;
      MapInstanceIdToNumLightSources myMapInstanceIdToNumLightSources;

      int myRunningInstanceId;

      int myNumValidInstances;

      DtReusablePerGeomInstances myPerGeomInstances;
      unsigned int myMaxNumLightSources;
   };
}