/*==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,
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 or by snail mail at:
      Cyan Worlds, Inc.
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*==LICENSE==*/
///////////////////////////////////////////////////////////////////////////////
//																			 //
//	plRTProjDirLight.cpp - Functions for the Projected Directional MAX light //
//	Cyan, Inc.																 //
//																			 //
//// Version History //////////////////////////////////////////////////////////
//																			 //
//	8.2.2001 mcn - Created.													 //
//																			 //
///////////////////////////////////////////////////////////////////////////////

#include "HeadSpin.h"
#include "plRTProjDirLight.h"
#include "plRTProjDirLightClassDesc.h"
#include "iparamm2.h"
#include "../MaxPlasmaMtls/Layers/plLayerTex.h"
#include "../MaxPlasmaMtls/Layers/plLayerTexBitmapPB.h"
#include "../MaxComponent/plMaxAnimUtils.h"
#include "plRTObjLightDesc.h"
#include "plRTLightBaseAnimDlgProc.h"


//// Static ClassDesc2 Get Functions //////////////////////////////////////////

plRTProjDirLightDesc	plRTProjDirLightDesc::fStaticDesc;


//// Dialog Proc //////////////////////////////////////////////////////////////

class plProjDirDlgProc : public plBaseLightProc
{
	public:
		BOOL DlgProc(TimeValue t, IParamMap2 *map, HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
		{
			IParamBlock2		*pb = map->GetParamBlock();
			plRTProjDirLight	*lite = (plRTProjDirLight *)pb->GetOwner();
			PBBitmap			*bitmap;
			plLayerTex			*layer = (plLayerTex *)lite->GetProjMap();
			ICustButton			*bmSelectBtn;


			switch( msg )
			{
				case WM_COMMAND:
					if( LOWORD( wParam ) == IDC_PROJ_MAPNAME )
					{
						BOOL selectedNewBitmap = layer->HandleBitmapSelection();
						if( selectedNewBitmap )
						{
							bmSelectBtn = GetICustButton( GetDlgItem( hWnd, IDC_PROJ_MAPNAME ) );
							bitmap = layer->GetPBBitmap();
							bmSelectBtn->SetText( bitmap != nil ? (TCHAR *)bitmap->bi.Filename() : "");
							ReleaseICustButton( bmSelectBtn );
						}
						return false;
					}
					break;

				case WM_INITDIALOG:

					// Set projection map bitmap name
					bmSelectBtn = GetICustButton( GetDlgItem( hWnd, IDC_PROJ_MAPNAME ) );
					if( bmSelectBtn != nil )
					{
						bitmap = ( layer == nil ) ? nil : layer->GetPBBitmap();
						if( bitmap != nil )
							bmSelectBtn->SetText( (TCHAR *)bitmap->bi.Filename() );
						else
							bmSelectBtn->SetText( _T( "<none>" ) );
						ReleaseICustButton( bmSelectBtn );
					}

					break;
			}

			return plBaseLightProc::DlgProc( t, map, hWnd, msg, wParam, lParam );
		}
		void DeleteThis() {};
};
static plProjDirDlgProc		gPPDirLiteDlgProc;

/// Include for the ParamBlock2 definition

#include "plRTProjDirLightPBDec.h"


///////////////////////////////////////////////////////////////////////////////
//// plRTProjPBAccessor Class Functions ///////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////

plRTProjPBAccessor	plRTProjPBAccessor::fAccessor;

void	plRTProjPBAccessor::Set( PB2Value& val, ReferenceMaker* owner, ParamID id, int tabIndex, TimeValue t )
{
	plRTProjDirLight *obj = (plRTProjDirLight *)owner;
	IParamBlock2 *pb = obj->GetParamBlockByID( plRTProjDirLight::kBlkProj );
	
	switch( id )
	{
		case plRTProjDirLight::kProjMap:
/*			{
				if( pb->GetMap() )
					pb->GetMap()->Invalidate( plRTProjDirLight::kProjMap );
				PBBitmap *thisMap = val.bm;
				obj->SetProjMap( &thisMap->bi );
			}
*/			break;
		default:
			break;
	}
}

void	plRTProjPBAccessor::Get( PB2Value& v, ReferenceMaker* owner, ParamID id, int tabIndex, TimeValue t, Interval &valid )
{
}

///////////////////////////////////////////////////////////////////////////////
//// Projected Directional Light //////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////

plRTProjDirLight::plRTProjDirLight()
{
	fIP = nil; 
	fLightPB = nil; 
	fProjPB = nil;
	fClassDesc = plRTProjDirLightDesc::GetDesc();
	fClassDesc->MakeAutoParamBlocks( this );

	fLightPB->SetValue(kLightColor, 0,  Color(255,255,255));
	SetHSVColor(0, Point3(255, 255, 255));
	
	fTex = nil;
	meshBuilt = 0; 
	
	IBuildMeshes(true);
}

ObjLightDesc *plRTProjDirLight::CreateLightDesc( INode *n, BOOL forceShadowBuf )
{
	return TRACKED_NEW DirLight( n, forceShadowBuf );
}

RefTargetHandle	plRTProjDirLight::Clone( RemapDir &remap )
{
	plRTProjDirLight *obj = TRACKED_NEW plRTProjDirLight;

	obj->ReplaceReference( kRefDirLight, fLightPB->Clone( remap ) );
	BaseClone( this, obj, remap );

	return obj;
}

//// SubAnim /////////////////////////////////////////////////////////////////

Animatable	*plRTProjDirLight::SubAnim( int i )
{
	switch( i )
	{			
		case 0:
			return (Animatable *)fLightPB;
		case 1:
			return (Animatable *)fProjPB;
		default: 
			return nil;
	}
}

//// SubAnimName /////////////////////////////////////////////////////////////

TSTR	plRTProjDirLight::SubAnimName( int i ) 
{ 
	switch( i ) 
	{	
		case 0:
			return fLightPB->GetLocalName();
		case 1:
			return fProjPB->GetLocalName();
		default:
			return TSTR( "" );
	}
}

//// GetReference ////////////////////////////////////////////////////////////

RefTargetHandle	plRTProjDirLight::GetReference( int i )
{
	switch( i )
	{
		case kRefMainRollout:
			return (RefTargetHandle)fLightPB;
		case kRefProjRollout:
			return (RefTargetHandle)fProjPB;
		default:
			return plRTLightBase::GetReference( i );
	}
}		

//// SetReference ////////////////////////////////////////////////////////////

void	plRTProjDirLight::SetReference( int ref, RefTargetHandle rtarg )
{
	switch( ref )
	{		
		case kRefMainRollout:
			fLightPB = (IParamBlock2 *)rtarg; 
			break;
		case kRefProjRollout:
			fProjPB = (IParamBlock2 *)rtarg;
			break;

		default:
			plRTLightBase::SetReference( ref, rtarg );
			break;
	}	
}

//// ParamBlock Functions ////////////////////////////////////////////////////

int	plRTProjDirLight::NumParamBlocks()
{
	return plRTLightBase::NumParamBlocks() + 1;
}

IParamBlock2	*plRTProjDirLight::GetParamBlock( int i )
{
	switch ( i )
	{
		case 2: return fProjPB;
		default: return plRTLightBase::GetParamBlock( i );
	}
}

IParamBlock2	*plRTProjDirLight::GetParamBlockByID( BlockID id )
{
	if( fProjPB->ID() == id )
		return fProjPB;
	else
		return plRTLightBase::GetParamBlockByID( id );
}

//// GetProjMap //////////////////////////////////////////////////////////////

Texmap	*plRTProjDirLight::GetProjMap() 
{ 
	// If we don't have one, create one
	plLayerTex	*layer = (plLayerTex *)fProjPB->GetTexmap( kTexmap, 0 );
	if( layer == nil || layer->ClassID() != LAYER_TEX_CLASS_ID )
	{
		layer = TRACKED_NEW plLayerTex;
		fProjPB->SetValue( kTexmap, 0, (Texmap *)layer );

		IParamBlock2 *bitmapPB = layer->GetParamBlockByID( plLayerTex::kBlkBitmap );
		bitmapPB->SetValue( kBmpUseBitmap, 0, 1 );
	}

	// Backwards compatability here
	PBBitmap	*bitmap = fProjPB->GetBitmap( kProjMap, 0 );
	if( bitmap != nil )
	{
		layer->SetBitmap( &bitmap->bi );
		fProjPB->SetValue( kProjMap, 0, (PBBitmap *)nil );
	}

	if( layer )
	{
		const char* dbgTexName = layer->GetName();

		IParamBlock2 *bitmapPB = layer->GetParamBlockByID(plLayerTex::kBlkBitmap);
		hsAssert(bitmapPB, "LayerTex with no param block");

		int noCompress = fProjPB->GetInt(kProjNoCompress);
		int noMip = fProjPB->GetInt(kProjNoMip);
		bitmapPB->SetValue(kBmpNonCompressed, TimeValue(0), noCompress);
		bitmapPB->SetValue(kBmpNoFilter, TimeValue(0), noMip);
	}
	return (Texmap *)layer;
}
	
//// IBuildMeshes ////////////////////////////////////////////////////////////

void	plRTProjDirLight::IBuildMeshes( BOOL isnew ) 
{
	BuildStaticMeshes();

	fMesh = staticMesh[ plRTLightBase::RT_OMNI + 1 ];
}

//// GetLocalBoundBox ////////////////////////////////////////////////////////

void	plRTProjDirLight::GetLocalBoundBox( TimeValue t, INode *node, ViewExp *vpt, Box3 &box )
{
	Point3	loc = node->GetObjectTM( t ).GetTrans();
	float	scaleFactor = vpt->NonScalingObjectSize() * vpt->GetVPWorldWidth( loc ) / 360.0f;
	float	width, height, depth;

	box = fMesh.getBoundingBox();
	// Because we want to scale about the origin, not the box center, we have to do this funky offset
	Point3	boxCenter = box.Center();
	box.Translate( -boxCenter );
	box.Scale( scaleFactor );
	boxCenter *= scaleFactor;
	box.Translate( boxCenter );

	if( ( extDispFlags & EXT_DISP_ONLY_SELECTED ) )
	{
		fProjPB->GetValue( kWidth, t, width, FOREVER );
		fProjPB->GetValue( kHeight, t, height, FOREVER );
		fProjPB->GetValue( kRange, t, depth, FOREVER );
		width /= 2.f;
		height /= 2.f;

		box += Point3( -width, -height, 0.f );
		box += Point3( width, height, -depth );
	}
}

//// DrawConeAndLine /////////////////////////////////////////////////////////

int		plRTProjDirLight::DrawConeAndLine( TimeValue t, INode* inode, GraphicsWindow *gw, int drawing ) 
{
	Matrix3 tm = inode->GetObjectTM( t );
	gw->setTransform( tm );
	gw->clearHitCode();

	if( extDispFlags & EXT_DISP_ONLY_SELECTED )
		DrawCone( t, gw, 500 );

	return gw->checkHitCode();
}

//// DrawCone ////////////////////////////////////////////////////////////////
//	Function called by MAX to render the cone shape in the viewport for this
//	light. Note that this is the cone, not the actual object itself!

void	plRTProjDirLight::DrawCone( TimeValue t, GraphicsWindow *gw, float dist ) 
{
	Point3	nearPts[ 5 ], farPts[ 5 ], u[ 3 ];
	int		i;
	float	width, height;


	// Get values
	fProjPB->GetValue( kWidth, t, width, FOREVER );
	fProjPB->GetValue( kHeight, t, height, FOREVER );
	fProjPB->GetValue( kRange, t, dist, FOREVER );

	// Draw a rectangle showing the extents of the light (width, height and depth)
	IBuildRectangle( width, height, 0, nearPts );
	IBuildRectangle( width, height, -dist, farPts );

	gw->setColor( LINE_COLOR, GetUIColor( COLOR_HOTSPOT ) );

	gw->polyline( 4, nearPts, nil, nil, true, nil );
	gw->polyline( 4, farPts, nil, nil, true, nil );
	for( i = 0; i < 4; i++ )
	{
		u[ 0 ] = nearPts[ i ];
		u[ 1 ] = farPts[ i ];
		gw->polyline( 2, u, nil, nil, false, nil );
	}
}

//// IBuildRectangle /////////////////////////////////////////////////////////

void	plRTProjDirLight::IBuildRectangle( float width, float height, float z, Point3 *pts )
{
	width /= 2.f;
	height /= 2.f;

	pts[ 0 ] = Point3( -width, -height, z );
	pts[ 1 ] = Point3( width, -height, z );
	pts[ 2 ] = Point3( width, height, z );
	pts[ 3 ] = Point3( -width, height, z );
}

//// GetFallsize /////////////////////////////////////////////////////////////
//	To get using-light-as-camera-viewport to work

float	plRTProjDirLight::GetFallsize( TimeValue t, Interval &valid )
{
	if( fProjPB == nil )
		return -1.f;

	return fProjPB->GetFloat( kWidth, t );
}

//// GetAspect ///////////////////////////////////////////////////////////////
//	To get using-light-as-camera-viewport to work

float	plRTProjDirLight::GetAspect( TimeValue t, Interval &valid )
{
	if( fProjPB == nil )
		return -1.f;

	return( fProjPB->GetFloat( kHeight, t ) / fProjPB->GetFloat( kWidth, t ) );
}

//// GetTDist ////////////////////////////////////////////////////////////////
//	To get using-light-as-camera-viewport to work

float	plRTProjDirLight::GetTDist( TimeValue t, Interval &valid )
{
	return 0.f;
	if( fProjPB == nil )
		return -1.f;

	return fProjPB->GetFloat( kRange, t );
}

//// SetFallsize /////////////////////////////////////////////////////////////
//	To get using-light-as-camera-viewport to work

void	plRTProjDirLight::SetFallsize( TimeValue time, float f )
{
	if( fProjPB != nil )
		fProjPB->SetValue( kWidth, time, f );
}

//// EvalLightState //////////////////////////////////////////////////////////
//	To get using-light-as-camera-viewport to work

RefResult plRTProjDirLight::EvalLightState( TimeValue t, Interval& valid, LightState *ls )
{
	ls->type = DIRECT_LGT;
	if( fLightPB->GetInt( kLightOn, t ) == true )
		ls->color = GetRGBColor( t, valid );
	else
		ls->color = Color( 0, 0, 0 );
	ls->on = fLightPB->GetInt( kLightOn, t );
	ls->intens = GetIntensity( t, valid );
	
	float	fall = fProjPB->GetFloat( kWidth, t );
	if( fall < fProjPB->GetFloat( kHeight, t ) )
		fall = fProjPB->GetFloat( kHeight, t );

	ls->hotsize = ls->fallsize = fall / 2.f;
	ls->useNearAtten = false;
	ls->useAtten = false;
	ls->shape = RECT_LIGHT;

	ls->aspect = fProjPB->GetFloat( kHeight, t ) / fProjPB->GetFloat( kWidth, t );
	ls->overshoot = false;
	ls->shadow = false;
	ls->ambientOnly = false;
	ls->affectDiffuse = fLightPB->GetInt( kAffectDiffuse, t );
	ls->affectSpecular = fLightPB->GetInt( kSpec, t );

	return REF_SUCCEED;
}