DtIndirectVerticesHelper.h

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


#pragma once

#include <vrvOsg/vrvOsg.h>

#include <vrvOsg/DtIndirectBindlessVertexFormat.h>
#include <vrvOsg/DtIndirectGeometryTextures.h>

#include <osg/Geometry>

#include <string>
#include <vector>

namespace osg
{
   class Geometry;
}

namespace makVrv
{
   class DtDe;

   class DT_DLL_VRVOSG DtIndirectVerticesHelper
   {
   public:
      DtIndirectVerticesHelper(DtDe& de);

      virtual ~DtIndirectVerticesHelper();

      DtIndirectVerticesHelper(const DtIndirectVerticesHelper&) = delete;

      DtIndirectVerticesHelper& operator=(const DtIndirectVerticesHelper&) = delete;
   public:
      virtual void copyVertices(std::vector<DtIndirectBindlessVertexFormat>& destinationVertices, const osg::Geometry& srcGeometry, const osg::Matrix& transform) const;

      virtual void copyNormals(std::vector<DtIndirectBindlessVertexFormat>& destinationVertices, const osg::Geometry& srcGeometry) const;

      virtual void copyColors(std::vector<DtIndirectBindlessVertexFormat>& destinationVertices, const osg::Geometry& srcGeometry) const;

      virtual void copyTextureCoords(std::vector< std::vector<Vector2_32> > & destinationCoordinates
         , const osg::Geometry& srcGeometry
         , const DtIndirectGeometryTextures& texturesForThisGeometry
         , const std::vector<DtIndirectBindlessVertexFormat>& destinationVertices) const;

      virtual void setModelName(const std::string& modelname);

      virtual bool degenerate(void) const;

      virtual void setCopyRange(int startVertex, int endVertex);

   protected:

      virtual bool checkSrcTextureCoordsOk(const osg::Geometry& srcGeometry) const;

   protected:
      // used only for outputting debug messages
      std::string myModelFileName;
      mutable bool myDegenerateVertices;

      DtDe& myDe;

      int myStartVertex = -1;
      
      int myEndVertex = -1;
   };
}