DtProjected2DFlatEffect.h

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


#pragma once

#include <vrvGraphics/Dt2DEffect.h>

namespace makVrv
{

   class DT_DLL_VRVGRAPHICS DtProjected2DFlatEffect : public Dt2DEffect
   {
   public:

      DtProjected2DFlatEffect(const std::string& dataPath, const std::string& defines);

      virtual ~DtProjected2DFlatEffect();

      virtual void releaseResources() override;

      virtual void setCamera( bool geocentric, float occluded,
         const double position[3]
       , const double positionMatrix[16]
       , const double projectionMatrix[16]
       , const int viewport[4]) override;

      //Set the number of groups.
      virtual void setGroupCount( unsigned int count ) override;

      // Enables or disables the stipple pattern.
      // \param enable - enables or disables the use of stipple
      // \param stipplePattern - an array of 32 unsigned int values representing the stipple bit pattern
      // \param tileRate - (0.0 - 1.0) the rate to tile the stipple pattern (min/max in shader)
      virtual void setStipple(bool enable,
         const unsigned int* stipplePattern, float tileRate);

      // Sets the given attributes to the OpenGL context.
      virtual void setVertexAttribPointers( size_t stride,
         const VertexAttribPtrInfo& positionAddress,
         const VertexAttribPtrInfo& colorAddress,
         const VertexAttribPtrInfo& offsetAddress,
         const VertexAttribPtrInfo& rotationAddress );

      virtual void unsetVertexAttribPointers();

      virtual void setIsNormalisedScreenCoordinates( bool isNormalisedScreenCoords );
   protected:

      virtual void updateUniformLocations() override;

      virtual void updateUniforms() override;

      virtual void initializeShaderSource() override;

      virtual void updateOtherUniforms();

   protected:

      int myUniform_CameraPos;
      int myUniform_CameraMat;
      int myUniform_ProjectionMat;
      int myUniform_GroupCount;
      int myUniform_Sphere;
      int myUniform_OccludedAlpha;
      int myUniform_Stipple;
      int myUniform_Tex;
      int myUniform_NormalisedScreenSpace;

      unsigned int myUnit;
      unsigned int myGroupCount;
      double myCameraPos[3];
      double myMatrix[16];
      double myProjectionMatrix[16];
      double myChannelWidthHeight[2];
      bool myIsNormalisedScreenCoords;
      bool myGeocentricFlag;
      float myGeocentricAlpha;

      struct StippleKey
      {
         unsigned int key[32];
         bool operator<(const StippleKey& b) const;
      };

      typedef std::map< StippleKey, int > StippleTextureMap;
      StippleTextureMap myStippleTextureMap;
   };


   class DT_DLL_VRVGRAPHICS DtProjected2DFlatQuadEffectCreator : public DtEffectCreator
   {
   public:

      virtual DtEffect* create(const std::string& dataPath, const std::string& defines, CreateParameters* params = 0)
      {
         return new DtProjected2DFlatEffect(dataPath, defines);
      }

   };

}