DtOverlayRenderer.h

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


#pragma once

#include <vrvGraphics/vrvGraphics.h>

#include <vrvCore/DtOverlayRendererInterface.h>

#include <vrvMath/DtMatrix4.h>


namespace makVrv
{
   class DtDe;
   class DtDecalProjectorRenderer;
   class DtDecalProjectorLineRenderer;
   struct DtDecalProjectorRendererDrawSettings;
   class DtQuadProxyInterface;
   class DtTextProxyInterface;
   class DtLineRenderer;
   class DtQuadRenderer;
   class DtTriangleRenderer;
   class DtTextRenderer;
   class DtOverlayResourceProvider;
   struct DtObserverRenderData;
   struct DtOverlayRenderData;


   class DT_DLL_VRVGRAPHICS DtOverlayRendererCreator : public DtOverlayRendererInterfaceCreator
   {
   public:
      DtOverlayRendererCreator(DtDe& de);

      // Unimplemented Copy CTOR
      DtOverlayRendererCreator(const DtOverlayRendererCreator& orig) = delete;

      // Unimplemented Assignment Operator
      DtOverlayRendererCreator& operator=(const DtOverlayRendererCreator& rhs) = delete;

      virtual ~DtOverlayRendererCreator();

   public:

      virtual DtOverlayRendererInterface* create(DtOverlayResourceProvider*);

   };

   class DT_DLL_VRVGRAPHICS DtOverlayRenderer : public DtOverlayRendererInterface
   {
      friend DtOverlayRendererCreator;

   public:
      
      virtual ~DtOverlayRenderer();

      DtOverlayRenderer() = delete;

      DtOverlayRenderer(
         const DtOverlayRenderer &other) = delete;

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

   public:

      virtual bool render(const DtOverlayRenderData& overlayRenderData,
         const DtObserverRenderData& channelRenderData,
         const double* currentProjectionMatrix);

      virtual void releaseResources();

      virtual void setProjectCameraIs3D(bool is3D);
      virtual bool projectCameraIs3D() const;

      virtual void setProjectCameraIsNormalized( bool isNormalize);
      virtual bool projectCameraIsNormalized() const;

      virtual DtOverlayResourceProvider& resourceProvider();
      virtual DtLineRenderer& lineRenderer() const;
      virtual DtQuadRenderer& quadRenderer() const;
      virtual DtTriangleRenderer& triangleRenderer() const;
      virtual DtTextRenderer& textRenderer() const;

      virtual DtQuadProxyInterface* createQuadProxyInterface(DtQuadProxyInterface::FillType type = DtQuadProxyInterface::Fill_Solid) override;
      virtual DtTextProxyInterface* createTextProxyInterface() override;
      virtual DtLineSegmentInterface* createLineSegmentInterface() override;
      virtual DtTexturedLineSegmentInterface* createTexturedLineSegmentInterface() override;
      virtual DtDecalProjectorComponentInterface* createDecalProjectorComponentInterface(
         DtDecalProjectorComponentInterface::RenderingType type) override;


      virtual bool somethingToRender(
         DtOverlayResourceRequirements& resourceRequirements) const;

   protected:

      DtOverlayRenderer(DtDe& de, DtOverlayResourceProvider& provider);

      // Computes the draw settings required for decal projectors.
      virtual void computeDecalProjectorDrawSetting(
         const DtOverlayRenderData& overlayRenderData,
         const DtObserverRenderData& channelRenderData,
         DtDecalProjectorRendererDrawSettings& outDrawSettings);

      static void fillInNormalizedProjectionMatrix(const int viewport[4], double mat[16] );

      static void fillInTextProjectionMatrix(const int viewport[4], double mat[16] );

   protected:      

      DtOverlayResourceProvider& myProvider;      
      DtLineRenderer* myLinesRenderer;
      DtQuadRenderer* myQuadsRenderer;
      DtTriangleRenderer* myTrianglesRenderer;
      DtTextRenderer* myTextRenderer;
      DtDecalProjectorRenderer* myDecalProjectorTriangleRenderer;
      DtDecalProjectorLineRenderer* myDecalProjectorLineRenderer;
      bool myProjectCameraIs3D;
      bool myProjectCameraIsNormalized;
   };
}