#pragma once

//disable inheritance warning caused by multiple inheritance
#if _WIN32
#if _MSC_VER
#pragma warning(disable: 4250)
#endif
#endif

#include "OgreRenderTechnique.h"
#include "CausticCasterRenderTechnique.h"

/**
	@brief CausticCasterRenderTechnique used in an OGRE environment.
*/
class OgreCausticCasterRenderTechnique : public OgreRenderTechnique,
											public CausticCasterRenderTechnique	
{
public:
	/**
		@brief Constructor.

		@param startFrame					adds an offset to the current frame number to help evenly distribute updates between frames
		@param photonMapUpdateInterval		photon map and caustic cubemap update frequency
		@param photonMapResolution			photon map resolution
		@param causticCubeMapResolution		caustic cubemap resolution
		@param photonMapMaterialName		the name of the material should be used when rendering the choton hit map
		@param causticMapMaterialName		the name of the material that should be used when rendering the caustic cubemap
		@param photonMapTexID				the texture unit state id of the caustic map generation material where the photonhit map should be bound to
		@param updateAllFace				defines if all cubemap faces should be updated in a frame or only one face per frame
		@param useDistance					tells if a distance cubemap impostor should be used in photon hit calculation (recommended)
		@param pass							the pass to operate on
		@param parentRenderable				the object to operate on
		@param parentTechniqueGroup			the TechniqueGroup this RenderedTechnique is attached to
	*/
	OgreCausticCasterRenderTechnique( unsigned long startFrame,
							unsigned long photonMapUpdateInterval,
							unsigned int photonMapResolution,
							unsigned int custicCubeMapResolution,
							String photonMapMaterialName,
							String causticMapMaterialName,
							unsigned char photonMapTexID,
							bool updateAllFace,
							bool useDistance,
							float attenuation,
							bool useTriangles,
							bool blurCauCubeMap,
							Pass* pass,
							OgreRenderable* parentRenderable,
							OgreTechniqueGroup* parentTechniqueGroup
							);
	/**
		@brief Destructor.
	*/
	~OgreCausticCasterRenderTechnique();	
	/**
		@brief Returns the name of the created caustic cubemap.

		@return name of the caustic cubemap texture
	*/
	const String& getCausticCubeMapName();
	float getAttenuation(){return attenuation;}

protected:
	
	/**
		@brief name of the created photon hit map texture
	*/
    String photonMapMaterialName;
	/**
		@brief name of the created caustic cubemap texture
	*/
	String causticMapMaterialName;
	/**
		@brief the texture unit state id of the caustic map generation material where the photonhit map should be bound to.
	*/
	unsigned char photonMapTexID;
	float attenuation;
	bool useTriangles;
	bool blurCauCubeMap;
	
	//inherited
	void photonMapRunChanged(RenderingRun* run);
	//inherited	
	void causticCubeMapRunChanged(RenderingRun* run);
	//inherited
	void distanceCubeMapRunChanged(RenderingRun* run);
	//inherited
	void distanceCubeMapRunUpdated(RenderingRun* run);
	//inherited
	RenderingRun* createPhotonMapRun();
	//inherited
	RenderingRun* createCausticCubeMapRun();
	//inherited
	RenderingRun* createDistanceCubeMapRun();
};


class OgreCausticCasterRenderTechniqueFactory : public RenderTechniqueFactory
{
public:
	
	OgreCausticCasterRenderTechniqueFactory();

	OgreRenderTechnique* createInstance(IllumTechniqueParams* params,
										Pass* pass,
										OgreRenderable* parentRenderable,
										OgreTechniqueGroup* parentTechniqueGroup);


	float attenuation;
	unsigned long startFrame;
	unsigned long photonMapUpdateInterval;
	unsigned int photonMapResolution;
	unsigned int causticCubeMapResolution;
	String photonMapMaterialName;
	String causticMapMaterialName;
	unsigned char photonMapTexID;
	bool updateAllFace;
	bool useDistance;
	bool useTriangles;
	bool blurCauCubeMap;
	

};