/*==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/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.

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==*/
#include "hsTypes.h"
#include "plStaticEnvLayer.h"

#include "iparamb2.h"
#include "iparamm2.h"
#include "stdmat.h"

#include "plBMSampler.h"
#include "../MaxMain/plPlasmaRefMsgs.h"

class plStaticEnvLayerClassDesc : public ClassDesc2
{
public:
	int 			IsPublic()		{ return TRUE; }
	void*			Create(BOOL loading = FALSE) { return TRACKED_NEW plStaticEnvLayer(); }
	const TCHAR*	ClassName()		{ return GetString(IDS_STATIC_ENVMAP_LAYER); }
	SClass_ID		SuperClassID()	{ return TEXMAP_CLASS_ID; }
	Class_ID		ClassID()		{ return STATIC_ENV_LAYER_CLASS_ID; }
	const TCHAR* 	Category()		{ return TEXMAP_CAT_ENV; }
	const TCHAR*	InternalName()	{ return _T("PlasmaStaticEnvMapLayer"); }
	HINSTANCE		HInstance()		{ return hInstance; }
};
static plStaticEnvLayerClassDesc plStaticEnvLayerDesc;
ClassDesc2* GetStaticEnvLayerDesc() { return &plStaticEnvLayerDesc; }

#include "plStaticEnvLayerBitmapPB.cpp"

plStaticEnvLayer::plStaticEnvLayer() :
	fBitmapPB(NULL),
	fUVGen(NULL),
	fTexHandle(NULL),
	fTexTime(0),
	fIValid(NEVER)
{
	int	i;

	for( i = 0; i < 6; i++ )
	{
		fBitmaps[ i ] = NULL;
	}

	plStaticEnvLayerDesc.MakeAutoParamBlocks(this);
	ReplaceReference(kRefUVGen, GetNewDefaultUVGen());	
}

plStaticEnvLayer::~plStaticEnvLayer()
{
	int		i;


	for( i = 0; i < 6; i++ )
	{
		if( fBitmaps[ i ] )
			fBitmaps[ i ]->DeleteThis();
	}

	IDiscardTexHandle();
}

//From MtlBase
void plStaticEnvLayer::Reset() 
{
	GetStaticEnvLayerDesc()->Reset(this, TRUE);	// reset all pb2's
	for( int i = 0; i < 6; i++ )
	{
		SetBitmap( NULL, i );
	}

	fIValid.SetEmpty();
}

void plStaticEnvLayer::Update(TimeValue t, Interval& valid) 
{
	if (!fIValid.InInterval(t))
	{
		fIValid.SetInfinite();

        fUVGen->Update(t,fIValid);
		fBitmapPB->GetValidity(t, fIValid);
	}

	// Gonna need to do this when we support animated bm's
#if 0
	if (fBM)
	{
		if (bi.FirstFrame()!=bi.LastFrame())
			ivalid.SetInstant(t);
	}
#endif

	valid &= fIValid;
}

Interval plStaticEnvLayer::Validity(TimeValue t)
{
	//TODO: Update fIValid here

	// mf horse - Hacking this in just to get animations working.
	// No warranty on this not being stupid.
	Interval v = FOREVER;
	fBitmapPB->GetValidity(t, v);
	v &= fUVGen->Validity(t);
	return v;
}

ParamDlg* plStaticEnvLayer::CreateParamDlg(HWND hwMtlEdit, IMtlParams *imp) 
{
	fIMtlParams = imp;
	IAutoMParamDlg* masterDlg = plStaticEnvLayerDesc.CreateParamDlgs(hwMtlEdit, imp, this);

	SELBitmapDlgProc *paramDlg =  (SELBitmapDlgProc *)gBitmapParamBlk.GetUserDlgProc();
	if( paramDlg )
		paramDlg->fMtlParams = imp;

	return masterDlg;	
}

BOOL plStaticEnvLayer::SetDlgThing(ParamDlg* dlg)
{	
	return FALSE;
}

int plStaticEnvLayer::NumRefs()
{
	return 2;
}

//From ReferenceMaker
RefTargetHandle plStaticEnvLayer::GetReference(int i) 
{
	switch (i)
	{
		case kRefUVGen:		return fUVGen;
		case kRefBitmap:	return fBitmapPB;
		default: return NULL;
	}
}

void plStaticEnvLayer::SetReference(int i, RefTargetHandle rtarg) 
{
	Interval	garbage;

	switch (i)
	{
		case kRefUVGen:  
			fUVGen = (UVGen *)rtarg; 
			if( fUVGen )
				fUVGen->Update( TimeValue( 0 ), garbage );
			break;
		case kRefBitmap:
			fBitmapPB = (IParamBlock2 *)rtarg;
			// KLUDGE: If the paramblock is being set chances are we are being created or
			// loaded.  In the case of load, we want to refresh our textures.
			if (fBitmapPB)
				RefreshBitmaps();
			break;
	}
}

int	plStaticEnvLayer::NumParamBlocks()
{
	return 1;
}

IParamBlock2* plStaticEnvLayer::GetParamBlock(int i)
{
	switch (i)
	{
	case 0:	return fBitmapPB;
	default: return NULL;
	}
}

IParamBlock2* plStaticEnvLayer::GetParamBlockByID(BlockID id)
{
	if (fBitmapPB->ID() == id)
		return fBitmapPB;
	else
		return NULL;
}

//From ReferenceTarget 
RefTargetHandle plStaticEnvLayer::Clone(RemapDir &remap) 
{
	plStaticEnvLayer *mnew = TRACKED_NEW plStaticEnvLayer();
	*((MtlBase*)mnew) = *((MtlBase*)this); // copy superclass stuff
	mnew->ReplaceReference(kRefBitmap, remap.CloneRef(fBitmapPB));
	mnew->ReplaceReference(kRefUVGen, remap.CloneRef(fUVGen));
	BaseClone(this, mnew, remap);
	return (RefTargetHandle)mnew;
}

int plStaticEnvLayer::NumSubs()
{
	return 2;
}

Animatable* plStaticEnvLayer::SubAnim(int i) 
{
	//TODO: Return 'i-th' sub-anim
	switch (i)
	{
		case kRefUVGen:		return fUVGen;
		case kRefBitmap:	return fBitmapPB;
		default: return NULL;
	}
}

TSTR plStaticEnvLayer::SubAnimName(int i) 
{
	switch (i)
	{
		case kRefUVGen:		return "UVGen";
		case kRefBitmap:	return fBitmapPB->GetLocalName();
		default: return "";
	}
}

RefResult plStaticEnvLayer::NotifyRefChanged(Interval changeInt, RefTargetHandle hTarget, 
   PartID& partID, RefMessage message) 
{
	switch (message)
	{
	case REFMSG_CHANGE:
		{
			fIValid.SetEmpty();

			if (hTarget == fBitmapPB)
			{
				// see if this message came from a changing parameter in the pblock,
				// if so, limit rollout update to the changing item and update any active viewport texture
				ParamID changingParam = fBitmapPB->LastNotifyParamID();
				fBitmapPB->GetDesc()->InvalidateUI(changingParam);

				if (changingParam != -1)
					IChanged();
			}
		}
		break;

	case REFMSG_UV_SYM_CHANGE:
		IDiscardTexHandle();  
		break;
	}

	return REF_SUCCEED;
}

void plStaticEnvLayer::IChanged()
{
	IDiscardTexHandle();
	// Texture wasn't getting updated in the viewports, and this fixes it.
	// Don't know if it's the right way though.
	NotifyDependents(FOREVER, PART_ALL, REFMSG_CHANGE);

	// And this is so the SceneWatcher gets notified that the material on some of it's
	// referenced objects changed.
	NotifyDependents(FOREVER, PART_ALL, REFMSG_USER_MAT);
}

#define TEX_HDR_CHUNK 0x5000
#define MAX_ASS_CHUNK 0x5500

IOResult plStaticEnvLayer::Save(ISave *isave) 
{
	IOResult res;

	isave->BeginChunk(TEX_HDR_CHUNK);
	res = MtlBase::Save(isave);
	if (res != IO_OK)
		return res;
	isave->EndChunk();

	return IO_OK;
}	

IOResult plStaticEnvLayer::Load(ILoad *iload) 
{
	IOResult res;
	while (IO_OK == (res = iload->OpenChunk()))
	{
		if (iload->CurChunkID() == TEX_HDR_CHUNK)
		{
			res = MtlBase::Load(iload);
		}
		iload->CloseChunk();
		if (res != IO_OK) 
			return res;
	}

	return IO_OK;
}

inline Point2 CompUV(float x, float y, float z) 
{
	return Point2( 0.5f * ( x / z + 1.0f ), 0.5f * ( y / z + 1.0f ) );
}

AColor plStaticEnvLayer::EvalColor(ShadeContext& sc)
{
	if (!sc.doMaps) 
		return AColor(0.0f, 0.0f, 0.0f, 1.0f);

	AColor color;
	if (sc.GetCache(this, color)) 
		return color;

	if (gbufID) 
		sc.SetGBufferID(gbufID);

	// Evaluate the Bitmap

//	Point3	v = sc.VectorTo( sc.V(), REF_OBJECT );//WORLD );
	Point3	v = sc.VectorTo( sc.Normal(), REF_OBJECT );
	float	wx,wy,wz;
	Color	rcol;
	Bitmap	*refmap = NULL;
	Point3	rv;
	Point2	uv;
	int		size;

	wx = (float)fabs( v.x );  
	wy = (float)fabs( v.y );
	wz = (float)fabs( v.z ); 
	if( wx >= wy && wx >= wz )
	{
		if( v.x < 0 )
		{
			refmap = fBitmaps[ kLeftFace ];
			uv = CompUV( -v.y, -v.z,  v.x );
		}
		else
		{
			refmap = fBitmaps[ kRightFace ];
			uv = CompUV( v.y, -v.z, -v.x );
		}
	}
	else if( wy >= wx && wy >= wz ) 
	{
		if( v.y > 0 )
		{
			refmap = fBitmaps[ kBackFace ];
			uv = CompUV( -v.x, -v.z, -v.y );
		}
		else
		{
			refmap = fBitmaps[ kFrontFace ];
			uv = CompUV(  v.x, -v.z,  v.y );
		}
	}
	else if( wz >= wx && wz >= wy ) 
	{
		if( v.z < 0 )
		{	
			refmap = fBitmaps[ kBottomFace ];
			uv = CompUV( -v.x, -v.y,  v.z );
		}
		else     
		{	
			refmap = fBitmaps[ kTopFace ];
			uv = CompUV( -v.x,  v.y, -v.z );
		}
	}

	if( refmap == NULL )
		color.White();
	else
	{
		if( uv.x < 0.0f )
			uv.x = 0.0f; 
		else if( uv.x > 1.0f )
			uv.x = 1.0f;
		if( uv.y < 0.0f )
			uv.y = 0.0f; 
		else if( uv.y > 1.0f )
			uv.y = 1.0f;
		size = refmap->Width();
		int x = (int)( uv.x * (float)( size - 1 ) );
		int y = (int)( ( 1.0f - uv.y ) * (float)( size - 1 ) );

		BMM_Color_64 c;
		refmap->GetLinearPixels( x, y, 1, &c );
		color = AColor( c.r / 65535.f, c.g / 65535.f, c.b / 65535.f, c.a / 65535.f );
	}

	// Invert color if specified
	if( fBitmapPB->GetInt( kBmpInvertColor ) )
	{
		color.r = 1.0f - color.r;
		color.g = 1.0f - color.g;
		color.b = 1.0f - color.b;
	}
	// Discard color if specified
	if( fBitmapPB->GetInt( kBmpDiscardColor ) )
		color.r = color.g = color.b = 1.0f;

	// Invert alpha if specified
	if( fBitmapPB->GetInt( kBmpInvertAlpha ) )
		color.a = 1.0f - color.a;
	// Discard alpha if specified
	if( fBitmapPB->GetInt( kBmpDiscardAlpha ) )
		color.a = 1.0f;

	// If RGB output is set to alpha, show RGB as grayscale of the alpha
	if( fBitmapPB->GetInt( kBmpRGBOutput ) == 1 )
		color = AColor( color.a, color.a, color.a, 1.0f );

	sc.PutCache(this, color); 
	return color;
}

float plStaticEnvLayer::EvalMono(ShadeContext& sc)
{
	if (fBitmapPB->GetInt(kBmpMonoOutput) == 1)
		return EvalColor(sc).a;

	return Intens(EvalColor(sc));
}

Point3 plStaticEnvLayer::EvalNormalPerturb(ShadeContext& sc)
{
	// Return the perturbation to apply to a normal for bump mapping
	return Point3(0, 0, 0);
}

ULONG plStaticEnvLayer::LocalRequirements(int subMtlNum)
{
	if( fBitmapPB->GetInt( kBmpUseMAXAtmosphere ) )
		return MTLREQ_VIEW_DEP;

	return MTLREQ_VIEW_DEP | MTLREQ_NOATMOS;
}

void plStaticEnvLayer::IDiscardTexHandle() 
{
	if (fTexHandle)
	{
		fTexHandle->DeleteThis();
		fTexHandle = NULL;
	}
}

void plStaticEnvLayer::ActivateTexDisplay(BOOL onoff)
{
	if (!onoff)
		IDiscardTexHandle();
}

BITMAPINFO *plStaticEnvLayer::GetVPDisplayDIB(TimeValue t, TexHandleMaker& thmaker, Interval &valid, BOOL mono, BOOL forceW, BOOL forceH)
{
						// FIXME
	fTexTime = 0;//CalcFrame(t);
//	texValid = clipValid;
	BITMAPINFO *bmi = NULL;
	int xflags = 0;

	if (fBitmapPB->GetInt(kBmpRGBOutput) == 1)
		xflags |= EX_RGB_FROM_ALPHA;
	bmi = thmaker.BitmapToDIB(fBitmaps[ 0 ], fUVGen->SymFlags(), xflags, forceW, forceH);

	return bmi;
}

DWORD plStaticEnvLayer::GetActiveTexHandle(TimeValue t, TexHandleMaker& thmaker) 
{
	// FIXME: ignore validity for now
	if (fTexHandle && fIValid.InInterval(t))// && texTime == CalcFrame(t)) 
		return fTexHandle->GetHandle();
	else
	{
		IDiscardTexHandle();
		
		fTexTime = 0;//CalcFrame(t);
		fTexHandle = thmaker.MakeHandle(GetVPDisplayDIB(t, thmaker, fIValid));
		if (fTexHandle)
			return fTexHandle->GetHandle();
		else
			return 0;
	}
}

const char *plStaticEnvLayer::GetTextureName( int which )
{
//	if (fBitmapPB->GetInt(kBmpUseBitmap))
	{
		PBBitmap *pbbm = fBitmapPB->GetBitmap( kBmpFrontBitmap + which );
		if (pbbm)
			return pbbm->bi.Name();
	}

	return NULL;
}

//// Set/GetBaseFilename //////////////////////////////////////////////////////

void	plStaticEnvLayer::SetBaseFilename( const TCHAR *name, TimeValue t )
{
	fBitmapPB->SetValue( kBmpBaseFilename, t, (TCHAR *)name );
}

const TCHAR	*plStaticEnvLayer::GetBaseFilename( TimeValue t )
{
	Interval		valid;
	TCHAR			*buffer;

	fBitmapPB->GetValue( kBmpBaseFilename, t, buffer, valid );
	return (const TCHAR *)buffer;
}

//// IGetViewTM ///////////////////////////////////////////////////////////////

Matrix3	plStaticEnvLayer::IGetViewTM( int i )
{
	Matrix3 m;
	m.IdentityMatrix();
	switch( i ) 
	{
		case kTopFace:
			m.RotateX( -PI );	
			break;
		case kBottomFace:
			break;
		case kLeftFace:
			m.RotateX( -.5f * PI );	
			m.RotateY( -.5f * PI );
			break;
		case kRightFace:
			m.RotateX( -.5f * PI );	
			m.RotateY( +.5f * PI );
			break;
		case kFrontFace:
			m.RotateX( -.5f * PI );	
			m.RotateY( PI );
			break;
		case kBackFace:
			m.RotateX( -.5f * PI );	
			break;
	}
	return m;
}

//// IWriteBM /////////////////////////////////////////////////////////////////

int	plStaticEnvLayer::IWriteBM( BitmapInfo *bi, Bitmap *bm, TCHAR *name )
{
	bi->SetName( name );
	if( bm->OpenOutput( bi ) == BMMRES_SUCCESS )
	{
		if( bm->Write( bi, BMM_SINGLEFRAME ) == BMMRES_SUCCESS ) 
		{
			bm->Close( bi );
			return 1;
		}
	}

	return 0;
}

//// RenderCubicMap ///////////////////////////////////////////////////////////
//	Generates the 6 faces for a cubic map based on a picked node

void	plStaticEnvLayer::RenderCubicMap( INode *node )
{
	int			res, size;
	BOOL		success = 0;
	TSTR		fname, fullname;
	Bitmap		*bm = NULL;
	TSTR		path, filename, ext, thisFilename;
	BitmapInfo	biOutFile;

	static TCHAR	suffixes[ 6 ][ 4 ] = { "_FR", "_BK", "_LF", "_RT", "_UP", "_DN" };


	Interface *ip = GetCOREInterface();
	size = fBitmapPB->GetInt( kBmpTextureSize, ip->GetTime() );
	if( size <= 0 ) 
	{
		return;
	}

	thisFilename = fBitmapPB->GetStr( kBmpBaseFilename, ip->GetTime() );
	if( thisFilename.isNull() )
	{
		return;
	}

	SplitFilename( thisFilename, &path, &filename, &ext );

	BOOL	wasHid = node->IsNodeHidden();
	node->Hide( TRUE );

	// Create a blank bitmap
	biOutFile.SetWidth( size );
	biOutFile.SetHeight( size );
	biOutFile.SetType( BMM_TRUE_64 );
	biOutFile.SetAspect( 1.0f );
	biOutFile.SetCurrentFrame( 0 );
	bm = TheManager->Create( &biOutFile );

	Matrix3 nodeTM = node->GetNodeTM( ip->GetTime() );
	Matrix3 tm;	
	INode *root = ip->GetRootNode();		
	bm->Display( GetString( IDS_CUBIC_RENDER_TITLE ) );

	/// Set up rendering contexts
	ViewParams vp;
	vp.projType = PROJ_PERSPECTIVE;
	vp.hither = .001f;
	vp.yon = 1.0e30f;
	vp.fov = PI/2.0f;
	if( fBitmapPB->GetInt( kBmpUseMAXAtmosphere ) )
	{
		vp.nearRange = 0;
		vp.farRange = fBitmapPB->GetFloat( kBmpFarDistance );
	}
	else
	{
		vp.nearRange = vp.farRange = 1.0e30f;
	}
	BOOL	saveUseEnvMap = ip->GetUseEnvironmentMap();
	ip->SetUseEnvironmentMap( false );

	res = ip->OpenCurRenderer( &vp ); 
	for( int i = 0; i < 6; i++ )
	{
		tm = IGetViewTM( i );
		tm.PreTranslate( -nodeTM.GetTrans() ); 
		vp.affineTM = tm;

		// Construct filename
		thisFilename.printf( _T( "%s\\%s%s%s" ), path, filename, suffixes[ i ], ext );

		res = ip->CurRendererRenderFrame( ip->GetTime(), bm, NULL, 1.0f, &vp );
		if( !res ) 
			goto fail;

		if( !IWriteBM( &biOutFile, bm, thisFilename ) ) 
			goto fail;
	}

	success = 1;
fail:
	ip->CloseCurRenderer();	
	ip->SetUseEnvironmentMap( saveUseEnvMap );

	bm->DeleteThis();
	node->Hide( wasHid );
	if( success )
	{
		for(int i = 0; i < 6; i++ )
		{
			BitmapInfo	bi;
			thisFilename.printf( _T( "%s\\%s%s%s" ), path, filename, suffixes[ i ], ext );
			bi.SetName( thisFilename );

			PBBitmap	pbBitmap( bi );
			fBitmapPB->SetValue( kBmpFrontBitmap + i, ip->GetTime(), &pbBitmap );
		}
		fBitmapPB->GetMap()->UpdateUI( ip->GetTime() );
	}
}

PBBitmap *plStaticEnvLayer::GetPBBitmap(int index /* = 0 */)
{ 
	return fBitmapPB->GetBitmap( ParamID( kBmpFrontBitmap + index ) ); 
}

void plStaticEnvLayer::ISetPBBitmap( PBBitmap *pbbm, int index )
{
	fBitmapPB->SetValue( ParamID( kBmpFrontBitmap + index ), 0, pbbm );
}