#pragma once

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

#include "OgreRenderingRun.h"
#include "OgreSharedRuns.h"


/**
	@brief Weight computing rendering run.

	This run is used in the pathmap technique. 
	It creates a texture for a light source that stores the weights that should be used for each cluster of entry points.
*/
class OgrePMWeightComputeRenderingRun : public OgreRenderingRun									
{	
public:

	/**
		@brief Constructor.

        @param name the name of the weight texture to be created
		@param LightName the name of the light source to use
	*/	
	OgrePMWeightComputeRenderingRun(String name, String LightName);
	/**
		@brief returns the name of the weight texture
	*/
	String getPMWeightTetureName(){return weightTexture->getName();}
	//not used
	float* getWeights(){return weights;}
	
protected:
	/**
		@brief light view-projection matrix
	*/
	Matrix4 lightMatrix;
	/**
		@brief light view matrix
	*/
	Matrix4 lightViewMatrix;
	/**
		@brief the name of the weight texture that was created by this run
	*/
	String name;
	/**
		@brief a pointer to the weight texture that was created by this run
	*/
	Texture* weightTexture;
	/**
		@brief A pointer to a texture that stores weights for all the entry point.

		This texture will be used to determine the weights of the clusters.
	*/
	Texture* allWeightsTexture;
	/**
		@brief A pointer to the light source.
	*/
	Light* light;
	//not used
	float* weights;
	//inherited
	void updateFrame(unsigned long frameNum);	
	/**
		@brief Creates the weight texture.

		It also creates the texture storing all weights. @see allWeightsTexture
	*/
	inline void createWeightMap();
};