DtTextRenderer.h

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/*****************************************************************************
 * Copyright (c) 2023 MAK Technologies, Inc.
 * All rights reserved.
 *****************************************************************************/


#pragma once

#include <vrvGraphics/vrvGraphics.h>
#include <vrvGraphics/DtPrimitiveRenderer.h>
#include <vrvCore/DtBoundingBox.h>
#include <vrvGraphics/DtTextured2DRenderer.h>
#include <vrvCore/DtAltitudeBasedConfiguration.h>
#include <vrvCore/DtAltitudeBasedBoundingBoxConfiguration.h>

#include <vrvGraphics/DtFont.h>

#include <vrvUtil/DtVirtualBaseClassCreator.h>

#include <vrvUtil/DtUnicode.h>

#include <matrix/vlMath.h>

#include <utility>
#include <vector>
#include <limits>

namespace makVrv
{

   class DtDe;
   class Dt2DEffect;
   class DtTextProxy;
   class DtTextLayoutInterface;
   class DtTexturedGlyphRenderer;
   class DtOverlayResourceProvider;
   class DtProjected2DTexturedEffect;
   class DtTextProxyGroup;
   struct DtObserverRenderData;
   struct DtOverlayRenderData;
   class DtBufferObject;

   class DtTextRenderer;

   typedef DtVirtualBaseClassCreator<DtTextRenderer, DtOverlayResourceProvider&> DtTextRendererCreator;

   template <>
   inline const char* creatorTypeName<DtTextRenderer>(void) { return "DtTextRendererCreator"; }

   class DT_DLL_VRVGRAPHICS DtTextRenderer : public DtPrimitiveRenderer
   {
      friend DtTextRendererCreator;

   public:
      
      virtual ~DtTextRenderer();

      DtTextRenderer() = delete;

      DtTextRenderer(
         const DtTextRenderer &other) = delete;

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

   public:

      virtual DtTextProxy* createProxy();

      virtual DtTextProxy* cloneProxy( const DtTextProxy* );

      virtual int numberOfPrimitives() const;

      virtual void releaseResources();

      virtual bool isRenderModeSupported( int mode );

      virtual bool forceTextShaping(void) const;

      virtual void render(const DtOverlayRenderData& overlayRenderData,
         const DtObserverRenderData& channelRenderData,
         const double projectionMatrix[16]);

      virtual void addGroupRef( unsigned int );

      virtual void removeGroupRef( unsigned int );

      virtual void removeProxy( const  DtTextProxy* );

      virtual void setAltitudeBasedConfigurationsForProxy(DtTextProxy*, const DtAltitudeBasedConfigurationCollection&);

      virtual bool getAltitudeBasedConfigurationsForProxy(const DtTextProxy*, DtAltitudeBasedConfigurationCollection&) const;

      virtual void clearAltitudeSpecificConfigurationsForProxy(DtTextProxy*);

   protected:

      DtTextRenderer(DtDe& de, DtOverlayResourceProvider& provider);

      virtual void resizeNumOfBufferObjectsIfNecessary(int newNumber);

      virtual void uploadData(DtBufferObject* bufferObject, size_t sizeInBytes, const void* data);

      virtual void deleteBufferObjectsAndClearList(void);

   protected:

      std::map<const DtTextProxy*, DtTextProxyGroup*> myTextProxyToGroupMap;
      std::map<const DtTextProxyGroup*, DtTexturedGlyphRenderer*> myGlyphRenderers;
      std::vector<DtTextProxyGroup*> myTextProxyGroups;
      DtProjected2DTexturedEffect* myEffect;

      struct BuffersContainer
      {
         BuffersContainer();
         ~BuffersContainer();

         DtBufferObject* myQuadPositions = nullptr;
         DtBufferObject* myQuadVertices = nullptr;
         DtBufferObject* myQuadIndexOffsets = nullptr;
         
         DtBufferObject* myQuadTextureIndexes = nullptr;
         DtBufferObject* myGpuTexturesBuffer = nullptr;
      };
      typedef std::vector< BuffersContainer* > BufferObjectList;
      BufferObjectList myBufferObjectList;
   };
}