DtProjected2DTexturedEffect.h

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/*****************************************************************************
 * Copyright (c) 2017 MAK Technologies, Inc.
 * All rights reserved.
 *****************************************************************************/


#pragma once

#include <vrvGraphics/Dt2DEffect.h>

namespace makVrv
{

   class DT_DLL_VRVGRAPHICS DtProjected2DTexturedEffect : public Dt2DEffect
   {
   public:

      DtProjected2DTexturedEffect(const std::string& dataPath, bool textureIsAlpha);

      virtual ~DtProjected2DTexturedEffect();

      virtual void setCamera( bool geocentric, float geocentricAlpha,
         const double position[3]
       , const double positionMatrix[16]
       , const double projectionMatrix[16]);


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

      virtual void setBackgroundImageTextureUnit( unsigned int unit );

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

      virtual void unsetVertexAttribPointers();

   protected:

      virtual void updateUniformLocations();

      virtual void updateUniforms();

      virtual void initializeShaderSource( void );

   protected:

      int myUniform_Texture;
      int myUniform_CameraPos;
      int myUniform_PositionMat;
      int myUniform_ProjectionMat;
      int myUniform_GroupCount;
      int myUniform_Sphere;
      int myUniform_OccludedAlpha;

      unsigned int myUnit;
      unsigned int myGroupCount;
      double myCameraPos[3];
      double myPositionMatrix[16];
      double myProjectionMatrix[16];
      bool myTextureIsAlpha;
      bool myGeocentricFlag;
      float myGeocentricAlpha;

      void updateGroupCountAndTextureUniforms();
      void updateOtherUniforms();
   };


   class DT_DLL_VRVGRAPHICS DtProjected2DTexturedEffectCreator : public DtEffectCreator
   {
   public:

      DtProjected2DTexturedEffectCreator( bool textureIsAlpha )
         : myTextureIsAlpha( textureIsAlpha )
      {
      }

      virtual DtEffect* create(const std::string& dataPath, CreateParameters* params = 0)
      {
         return new DtProjected2DTexturedEffect( dataPath, myTextureIsAlpha );
      }

   protected:

      bool myTextureIsAlpha;

   };

}