#pragma once

/***********************************************************************************/
/**	\file				PSSM.h
**	\brief				Header File zur Klasse PSSM
*************************************************************************************
**	Autor:				Christian Roesch
*************************************************************************************
**	_tut nichts_
**
*//*********************************************************************************/

#ifndef _PSSM_H
#define _PSSM_H

// includes
#include <d3dx9.h>

#include <cassert>

// Klassen-Deklaration
extern IDirect3DDevice9* g_d3d_device;

/***********************************************************************************/
/** \brief	PSSM _tut nichts_
*************************************************************************************
**	Genau genommen _tut dies nichts_
**
*//*********************************************************************************/

class	PSSM
{
public:
	static const int MaxSplitCount = 16;

	void Init();

	void UpdateSplits(const D3DXVECTOR3 &vLightDir, const D3DXMATRIX &mView, const D3DXMATRIX &mProj);

	int m_iSplitCount;
	float m_fRange;

	D3DXMATRIX m_ViewMatrices[MaxSplitCount];
	D3DXMATRIX m_ProjMatrices[MaxSplitCount];
	D3DXVECTOR3 m_ViewPos[MaxSplitCount];
	D3DXVECTOR3 m_ViewDir[MaxSplitCount];

private:
	void ComputeCornerPoints(D3DXVECTOR3 *pCorners,
		float fNear, float fFar, float fFTanHalfFOVX, float fTanHalfFOVY,
		const D3DXVECTOR3 &vCamPos, const D3DXVECTOR3 &vCamRight,
		const D3DXVECTOR3 &vCamUp, const D3DXVECTOR3 &vCamLook,
		float fOverlap);
};

#endif//_PSSM_H

class	PSSM;


/************************************************************************************
**	Ende der Datei:		PSSM.h
************************************************************************************/