#pragma once

#include "K3DTypes.h"
#include "SGameEnv.h"
#include "KPrimitiveSprite.h"

class K3DCamera;
struct K3DLight;

const int LENS_FLARE_NUM = 13;	///< 렌즈 플레어.

class SGameFlare : public SGameEnv
{
public:
	SGameFlare();
	~SGameFlare();

	virtual void Init( K3DRenderDevice *pDevice, K3DIndexBuffer * pIndexBuf=NULL );

	virtual void Process( DWORD dwTime );
	virtual void Render( KViewportObject *viewport );
	
	void SetLinePos( float fLinePos ) { m_fLinePos = fLinePos; }
	void SetSize( float fSize ) { m_fSize = fSize; }
	void CalsPos( float fRealIntensity, int nScreenX, int nScreenY, int nDistanceX, int nDistanceY );
		
protected:
	float m_fLinePos;
	float m_fSize;
	KColor m_Color;
	KSpritePrimitive	m_prSprite;
//	KWireUtilPrimitive	m_prViewWire;

	K3DVERTEX_LENS		m_Vertex[SLensPrimitive::NUM_VERTEX];
};


class SGameLensFlare
{
public:
	SGameLensFlare();
	~SGameLensFlare();

	void Init( K3DRenderDevice *pDevice );

	void SetRenderFlag( BOOL bRenderFlag ) { m_bRenderFlag = bRenderFlag; }

	void Process( DWORD dwTime );
	void Render( KViewportObject *viewport );
	
	void SetCamera( K3DCamera*  pCamera );
	void SetLight( const K3DLight* pLight );
	void SetProjMatrix( const K3DMatrix* pProjMatrix )
	{ 
		m_pProjMatrix = pProjMatrix; 
	}

	void SetExtent( int nWidth, int nHeight ) 
	{
		m_nScreenWidth  = nWidth;
		m_nScreenHeight = nHeight;
	}

	void SetPosition( K3DVector & pos, K3DVector & vSun )
	{
		m_Pos		= pos;
		m_vSunDir	= vSun - m_Pos;
		m_vSunDir.Normalize();
	}

	static void SetForceRenderFlag( bool bFlag )
	{
		s_bRenderFlag = bFlag;
	}

	static bool GetForceRenderFlag()
	{
		return s_bRenderFlag;
	}
protected:

	static bool s_bRenderFlag;

	void CalsFlarePos();

	float m_fIntensityBorder;

	K3DVector		 m_Pos;
	K3DVector		 m_vSunDir;

	K3DCamera*		 m_pCamera;
	const K3DLight*	 m_pLight;
	const K3DMatrix* m_pProjMatrix;

	K3DTextureSPtr		m_spTextureArray[3];

	int				 m_nScreenWidth;
	int				 m_nScreenHeight;

		
	K3DMaterial*     m_pMat;
	SGameFlare *	 m_pFlare[LENS_FLARE_NUM];

	BOOL			 m_bRenderFlag;
};