/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
///////////////////////////////////////////////////////////////////////////////
//																			 //
//	plStaticEnvLayer - Static EnvironmentMap MAX Layer						 //
//	Cyan, Inc.																 //
//																			 //
//// Version History //////////////////////////////////////////////////////////
//																			 //
//	8.17.2001 mcn - Created.												 //
//																			 //
///////////////////////////////////////////////////////////////////////////////

#ifndef _plStaticEnvLayer_h
#define _plStaticEnvLayer_h

#include "Max.h"
#include "plPlasmaMAXLayer.h"
#include "../resource.h"

class ClassDesc2;
class IParamBlock2;
class Bitmap;

ClassDesc2* GetStaticEnvLayerDesc();

extern TCHAR *GetString(int id);
extern HINSTANCE hInstance;


//// Class Definition /////////////////////////////////////////////////////////

class plStaticEnvLayer : public plPlasmaMAXLayer
{
protected:
	// Parameter block
	IParamBlock2	*fBitmapPB;
	UVGen			*fUVGen;

	IMtlParams		*fIMtlParams;

	TexHandle *fTexHandle;
	TimeValue fTexTime;

	Bitmap			*fBitmaps[ 6 ];
	Interval		fIValid;
	TCHAR			fBaseFileName[ MAX_PATH ];
   
	friend class SELBitmapDlgProc;


	Matrix3		IGetViewTM( int i );
	int			IWriteBM( BitmapInfo *bi, Bitmap *bm, TCHAR *name );

public:
	// Ref nums
	enum
	{
		kRefUVGen,
		kRefBitmap,
	};

	// Block ID's
	enum
	{
		kBlkBitmap,
	};

	// Faces
	enum
	{
		kFrontFace,
		kBackFace,
		kLeftFace,
		kRightFace,
		kTopFace,
		kBottomFace
	};

	plStaticEnvLayer();
	~plStaticEnvLayer();
	void DeleteThis() { delete this; }		

	//From MtlBase
	ParamDlg* CreateParamDlg(HWND hwMtlEdit, IMtlParams *imp);
	BOOL SetDlgThing(ParamDlg* dlg);
	void Update(TimeValue t, Interval& valid);
	void Reset();
	Interval Validity(TimeValue t);
	ULONG LocalRequirements(int subMtlNum);

	//From Texmap
	RGBA EvalColor(ShadeContext& sc);
	float EvalMono(ShadeContext& sc);
	Point3 EvalNormalPerturb(ShadeContext& sc);

	// For displaying textures in the viewport
	BOOL SupportTexDisplay() { return TRUE; }
	void ActivateTexDisplay(BOOL onoff);
	BITMAPINFO *GetVPDisplayDIB(TimeValue t, TexHandleMaker& thmaker, Interval &valid, BOOL mono=FALSE, int forceW=0, int forceH=0);
	DWORD GetActiveTexHandle(TimeValue t, TexHandleMaker& thmaker);
protected:
	void IChanged();
	void IDiscardTexHandle();

public:
	void GetUVTransform(Matrix3 &uvtrans) { fUVGen->GetUVTransform(uvtrans); }
	int GetTextureTiling() { return  fUVGen->GetTextureTiling(); }
	int GetUVWSource() { return fUVGen->GetUVWSource(); }
	virtual int GetMapChannel () { return fUVGen->GetMapChannel(); }	// only relevant if above returns UVWSRC_EXPLICIT
	UVGen *GetTheUVGen() { return fUVGen; }
	
	//TODO: Return anim index to reference index
	int SubNumToRefNum(int subNum) { return subNum; }
	
	
	// Loading/Saving
	IOResult Load(ILoad *iload);
	IOResult Save(ISave *isave);

	//From Animatable
	Class_ID ClassID() { return STATIC_ENV_LAYER_CLASS_ID; }		
	SClass_ID SuperClassID() { return TEXMAP_CLASS_ID; }
	void GetClassName(TSTR& s) { s = GetString(IDS_STATIC_ENVMAP_LAYER); }

	RefTargetHandle Clone( RemapDir &remap );
	RefResult NotifyRefChanged(Interval changeInt, RefTargetHandle hTarget, 
		PartID& partID,  RefMessage message);

	int NumSubs();
	Animatable* SubAnim(int i); 
	TSTR SubAnimName(int i);

	// TODO: Maintain the number or references here 
	int NumRefs();
	RefTargetHandle GetReference(int i);
	void SetReference(int i, RefTargetHandle rtarg);

	int	NumParamBlocks();	// return number of ParamBlocks in this instance
	IParamBlock2* GetParamBlock(int i); // return i'th ParamBlock
	IParamBlock2* GetParamBlockByID(BlockID id); // return id'd ParamBlock

	const char *GetTextureName( int which );

	void		SetBaseFilename( const TCHAR *name, TimeValue t );
	const TCHAR	*GetBaseFilename( TimeValue t );

	void	RenderCubicMap( INode *node );


	/// ParamBlock accessors
	enum
	{
		kScalingAny,
		kScalingHalf,
		kScalingNone
	};

	// Param ID's
	enum
	{
		kBmpFrontBitmap,
		kBmpBackBitmap,
		kBmpLeftBitmap,
		kBmpRightBitmap,
		kBmpTopBitmap,
		kBmpBottomBitmap,

		// Misc
		kBmpDiscardColor,
		kBmpInvertColor,
		kBmpDiscardAlpha,
		kBmpInvertAlpha,

		// Texture quality
		kBmpNonCompressed,
		kBmpScaling,

		// Max only
		kBmpMonoOutput,
		kBmpRGBOutput,

		// Detail
		kBmpUseDetail,
		kBmpDetailStartSize,
		kBmpDetailStopSize,
		kBmpDetailStartOpac,
		kBmpDetailStopOpac,

		// Texture generation
		kBmpBaseFilename,
		kBmpTextureSize,
		kBmpGenerateFaces,
		kBmpLastTextureSize,		// Annoying, but necessary to clamp texture sizes to powers of 2
		kBmpUseMAXAtmosphere,
		kBmpFarDistance,

		// Just a hack to simulate refraction instead of reflection
		kBmpRefract
	};

		// Pure virtual accessors for the various bitmap related elements
		virtual Bitmap *GetMaxBitmap(int index = 0) { return fBitmaps[ index ]; }
		virtual PBBitmap *GetPBBitmap( int index = 0 );
		virtual int		GetNumBitmaps( void ) { return 6; }

	protected:
		virtual void ISetMaxBitmap(Bitmap *bitmap, int index = 0) { fBitmaps[ index ] = bitmap; }
		virtual void ISetPBBitmap( PBBitmap *pbbm, int index = 0 );


};

#endif // _plStaticEnvLayer_h