DtCdbEffectTextureUtils.h

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/******************************************************************************
** Copyright (c) 2019 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>
#include <string>
#include <map>
#include <vector>

namespace osg
{
   class Texture;
}

namespace makVrv
{
   enum DtCdbEffectTextureType
   {
      //The bump map and normal map is the same in CDB, they are both tangent-space normal map
      CDB_ETT_NORMAL_MAP,
      CDB_ETT_NIGHT_MAP,
      CDB_ETT_LIGHT_MAP,
      CDB_ETT_CONTAMINANT_MAP,
      CDB_ETT_SKIDMARK_MAP,
      CDB_ETT_DETAIL_MAP,
      CDB_ETT_SPC_MAP,
      CDB_ETT_AO_MAP,
      CDB_ETT_CONFIGURABLE_MAP,
      CDB_ETT_UNSUPPORTED_MAP,
      CDB_ETT_INVALID
   };

   struct DT_DLL_VRVOSG DtCdbEffectTextureTuple
   {
      DtCdbEffectTextureTuple();
      bool isEffectTexture() const;
      DtCdbEffectTextureType effectTextureType;
      std::string effectTextureName;
   };

   class DtCdbEffectTextureCode
   {
   public:
      DtCdbEffectTextureCode(int CS1, int CS2Min, int CS2Max);

      DtCdbEffectTextureCode(const std::string& effectSuffix);

      int CS1();

      int CS2Min();

      int CS2Max();

      bool isSupportedbyCdb();

      const std::string& effectTextureSuffix() const;

      bool match(const std::string& texName) const;
   private:
      int myCS1;
      int myCS2Min;
      int myCS2Max;
      bool myIsSupportedByCdb;
      std::string myEffectTextureSuffix;
   };

   class DT_DLL_VRVOSG DtCdbEffectTextureUtils
   {
   public:
      //check if the texture matches the CDBEffectTextureCode
      static DtCdbEffectTextureTuple isEffectTexture(const osg::Texture* tex);

      static DtCdbEffectTextureTuple isEffectTexture(const std::string& textureFileName);

   private:
      //EffectTextureType-->a list of the cdb effect texture code for backwards compatibility
      typedef std::map<DtCdbEffectTextureType, std::vector<DtCdbEffectTextureCode> > DtCdbEffectTextureTypeCodeMap;
      static const DtCdbEffectTextureTypeCodeMap myEffectTextureTypeCodeMap;
      static DtCdbEffectTextureTypeCodeMap initEffectTextureTypeCodeMap();
   };
}