#pragma once
#include <osgTerrain/TerrainTile>


namespace osgTerrain {

template <class T>
class  GeometryTechniquePrototypeWorkaroundTLC : public TerrainTile::TileLoadedCallback
{
public:
	//! Constructor: Nothing to do.
	GeometryTechniquePrototypeWorkaroundTLC() {};

	//! Destructor: Nothing to do.
	virtual ~GeometryTechniquePrototypeWorkaroundTLC() {};

	/**
	 * \brief This function must be implemented. 
	 * 
	 * @return : Extrnal layer loading status.
	 */ 
	virtual bool deferExternalLayerLoading() const {return true;}

	/**
	 * \brief This function is performed after every tile loading.
	 * 
	 * It is used to install a custom geometryTechnique on every tile, because VPB databases older VPB 0.10 have a hardcoded geometryTechnique which ignores the GeometryTechniquePrototype of osgTerrain.
	 * 
	 * @param tile : Loaded tile.
	 * @param options : Reader writer options. Defined in the base class, but here not used.
	 */ 
	virtual void loaded(osgTerrain::TerrainTile* tile, const osgDB::ReaderWriter::Options* options) const {tile->setTerrainTechnique( new T() );}; 
};

}	// Namespace end.