/*==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 "HeadSpin.h"

#include "MaxMain/MaxAPI.h"

#include "../resource.h"

#include "../plBMSampler.h"

#include "plLayerTex.h"
#include "plLayerTexBitmapPB.h"
#include "MaxMain/plPlasmaRefMsgs.h"

class plLayerTexClassDesc : public plMaxClassDesc<ClassDesc2>
{
public:
    int             IsPublic() override     { return TRUE; }
    void*           Create(BOOL loading = FALSE) override { return new plLayerTex(); }
    const TCHAR*    ClassName() override    { return GetString(IDS_LAYER); }
    SClass_ID       SuperClassID() override { return TEXMAP_CLASS_ID; }
    Class_ID        ClassID() override      { return LAYER_TEX_CLASS_ID; }
    const TCHAR*    Category() override     { return TEXMAP_CAT_2D; }
    const TCHAR*    InternalName() override { return _T("PlasmaLayer"); }
    HINSTANCE       HInstance() override    { return hInstance; }
};
static plLayerTexClassDesc plLayerTexDesc;
ClassDesc2* GetLayerTexDesc() { return &plLayerTexDesc; }

ParamDlg* plLayerTex::fUVGenDlg = nullptr;

// For initializing paramblock descriptor
ParamBlockDesc2 *GetBitmapBlk();

#include "plLayerTexBitmapPB.cpp"

void plLayerTex::IGetClassName(MSTR& s) const
{
    s = GetString( IDS_LAYER );
}

plLayerTex::plLayerTex() :
    fBitmapPB(),
    fUVGen(),
    fTexHandle(),
    fTexTime(),
    fBM(),
    fIValid(NEVER)
{
#if 0
    // Initialize the paramblock descriptors only once
    static bool descInit = false;
    if (!descInit)
    {
        descInit = true;
        GetBitmapBlk()->SetClassDesc(GetLayerTexDesc());
    }
#endif

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

plLayerTex::~plLayerTex()
{
    if (fBM)
        fBM->DeleteThis();

    IDiscardTexHandle();
}

//From MtlBase
void plLayerTex::Reset() 
{
    GetLayerTexDesc()->Reset(this, TRUE);   // reset all pb2's
    SetBitmap(nullptr);

    fIValid.SetEmpty();
}

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

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

//      Interval clipValid;
//      clipValid.SetInfinite();
//      float temp;
//      fBitmapPB->GetValue(kBmpClipU, t, temp, clipValid);
//      fBitmapPB->GetValue(kBmpClipV, t, temp, clipValid);
//      fBitmapPB->GetValue(kBmpClipW, t, temp, clipValid);
//      fBitmapPB->GetValue(kBmpClipH, t, temp, clipValid);
    }

    // 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 plLayerTex::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* plLayerTex::CreateParamDlg(HWND hwMtlEdit, IMtlParams *imp) 
{
    fMtlParams = imp;

    IAutoMParamDlg* masterDlg = plLayerTexDesc.CreateParamDlgs(hwMtlEdit, imp, this);

    fUVGenDlg = fUVGen->CreateParamDlg(hwMtlEdit, imp);
    masterDlg->AddDlg(fUVGenDlg);

    return masterDlg;   
}

BOOL plLayerTex::SetDlgThing(ParamDlg* dlg)
{   
    if (dlg == fUVGenDlg)
    {
        fUVGenDlg->SetThing(fUVGen);
        return TRUE;
    }

    return FALSE;
}

int plLayerTex::NumRefs()
{
    return 3;
}

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

void plLayerTex::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 texture.
            if (fBitmapPB)
                RefreshBitmaps();
            break;
    }
}

int plLayerTex::NumParamBlocks()
{
    return 2;
}

IParamBlock2* plLayerTex::GetParamBlock(int i)
{
    switch (i)
    {
    case kRefBasic:
        // So this was something... a long time ago. It probably doesn't exist anymore.
        // We'll pretend it's a bitmap to keep everyone happy.
    case kRefBitmap:
        return fBitmapPB;
    default: return nullptr;
    }
}

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

//From ReferenceTarget 
RefTargetHandle plLayerTex::Clone(RemapDir &remap) 
{
    plLayerTex *mnew = new plLayerTex();
    *((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 plLayerTex::NumSubs()
{
    return 3;
}

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

MSTR plLayerTex::ISubAnimName(int i)
{
    switch (i)
    {
        case kRefUVGen:     return _M("UVGen");
        case kRefBitmap:    return fBitmapPB->GetLocalName();
        default: return _M("");
    }
}

RefResult plLayerTex::NotifyRefChanged(MAX_REF_INTERVAL changeInt, RefTargetHandle hTarget,
   PartID& partID, RefMessage message MAX_REF_PROPAGATE)
{
    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 && MAX_REF_PROPAGATE_VALUE)
                    IChanged();
            }
        }
        break;

    case REFMSG_UV_SYM_CHANGE:
        IDiscardTexHandle();  
        break;
    }

    return REF_SUCCEED;
}

BOOL plLayerTex::DiscardColor() 
{ 
    return fBitmapPB->GetInt(kBmpDiscardColor); 
}

BOOL plLayerTex::DiscardAlpha() 
{ 
    return fBitmapPB->GetInt(kBmpDiscardAlpha); 
}

void plLayerTex::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 plLayerTex::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 plLayerTex::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;
}

bool plLayerTex::HasAlpha()
{
   return (fBM != nullptr && fBM->HasAlpha() != 0);
}

Bitmap* plLayerTex::GetBitmap(TimeValue t)
{
    return fBM;
}

AColor plLayerTex::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
    //
    if (fBitmapPB->GetInt(kBmpUseBitmap) && fBM)
    {
        plBMSampler mysamp(this, fBM);
        color = fUVGen->EvalUVMap(sc, &mysamp, FALSE);
        // We'd like to pass TRUE and actually filter the image, but that seems to be
        // tripping an odd crash in Max internals. *shrug*
    }
    else
        color.White();

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

    return Intens(EvalColor(sc));
}

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

ULONG plLayerTex::LocalRequirements(int subMtlNum)
{
    return fUVGen->Requirements(subMtlNum); 
}

#if 0
int plLayerTex::ICalcFrame(TimeValue t) 
{
    PBBitmap *pbbm = fBitmapPB->GetBitmap(kBmpBitmap);
    if (!pbbm || !pbbm->bi)
        return 0;
    BitmapInfo *bi = pbbm->bi;

    TimeValue tm, dur, td;
    int frameStart = bi->FirstFrame();
    int frameEnd = bi->LastFrame();
    int tpf = GetTicksPerFrame();
    tm = TimeValue(float(t - startTime) * pbRate);
    dur = (fend-fstart+1)*GetTicksPerFrame();

    switch (endCond)
    {
    case END_HOLD:
        if (tm <= 0)
            return frameStart;
        if (tm >= dur)
            return frameEnd;
        return tm/tpf;

    case END_PINGPONG:
        if (((tm >= 0) && ((tm / dur) & 1)) || ((tm < 0) && !(tm / dur)))
        {
            td = modt(tm, dur);
            return frameStart + frameEnd - td / tpf;
        }
        // else fall through
    case END_LOOP:
        td = modt(tm, dur);
        return td / tpf;
    }

    return 0;
}
#endif

void plLayerTex::IDiscardTexHandle() 
{
    if (fTexHandle)
    {
        fTexHandle->DeleteThis();
        fTexHandle = nullptr;
    }
}

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

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

    if (fBitmapPB->GetInt(kBmpApply))
    {
        float clipu = fBitmapPB->GetFloat(kBmpClipU);
        float clipv = fBitmapPB->GetFloat(kBmpClipV);
        float clipw = fBitmapPB->GetFloat(kBmpClipW);
        float cliph = fBitmapPB->GetFloat(kBmpClipH);
        int discardAlpha = fBitmapPB->GetInt(kBmpDiscardAlpha);
        int alphaAsRGB = (fBitmapPB->GetInt(kBmpRGBOutput) == 1);

        int w = fBM->Width();
        int h = fBM->Height();

        Bitmap *newBM;
        BitmapInfo bi;
        bi.SetName(_T("y8798734"));
        bi.SetType(BMM_TRUE_32);
        bi.SetFlags(MAP_HAS_ALPHA);

        if (fBitmapPB->GetInt(kBmpCropPlace) == 1)
        {
            int x0, y0, nw, nh;
            int bmw = thmaker.Size();
            int bmh = int(float(bmw)*float(h)/float(w));
            bi.SetWidth(bmw);
            bi.SetHeight(bmh);
            newBM = TheManager->Create(&bi);
            newBM->Fill(0,0,0,0);
            nw = int(float(bmw)*clipw);
            nh = int(float(bmh)*cliph);
            x0 = int(float(bmw-1)*clipu);
            y0 = int(float(bmh-1)*clipv);
            
            if (nw<1) nw = 1;
            if (nh<1) nh = 1;
            PixelBuf row(nw);
            
            Bitmap *tmpBM;
            BitmapInfo bif2;
            bif2.SetName(_T("xxxx67878"));
            bif2.SetType(BMM_TRUE_32);
            bif2.SetFlags(MAP_HAS_ALPHA);
            bif2.SetWidth(nw);              
            bif2.SetHeight(nh);
            tmpBM = TheManager->Create(&bif2);
            tmpBM->CopyImage(fBM, COPY_IMAGE_RESIZE_LO_QUALITY, 0);
            BMM_Color_64*  p1 = row.Ptr();
            for (int y = 0; y<nh; y++)
            {
                tmpBM->GetLinearPixels(0,y, nw, p1);
                if (alphaAsRGB)
                {
                    for (int ix =0; ix<nw; ix++) 
                        p1[ix].r = p1[ix].g = p1[ix].b = p1[ix].a;
                }
                if (discardAlpha)
                {
                    for (int ix = 0; ix < nw; ix++) 
                        p1[ix].a = 0xffff;
                }
                newBM->PutPixels(x0, y+y0, nw, p1);
            }
            tmpBM->DeleteThis();
            bmi = thmaker.BitmapToDIB(newBM, fUVGen->SymFlags(), xflags, forceW, forceH);
            newBM->DeleteThis();
        }
        else
        {
            int x0,y0,nw,nh;
            x0 = int(float(w-1)*clipu);
            y0 = int(float(h-1)*clipv);
            nw = int(float(w)*clipw);
            nh = int(float(h)*cliph);
            if (nw<1) nw = 1;
            if (nh<1) nh = 1;
            bi.SetWidth(nw);
            bi.SetHeight(nh);
            PixelBuf row(nw);
            newBM = TheManager->Create(&bi);
            BMM_Color_64*  p1 = row.Ptr();
            for (int y = 0; y<nh; y++)
            {
                fBM->GetLinearPixels(x0,y+y0, nw, p1);
                if (alphaAsRGB)
                {
                    for (int ix = 0; ix < nw; ix++) 
                        p1[ix].r = p1[ix].g = p1[ix].b = p1[ix].a;
                }
                if (discardAlpha)
                {
                    for (int ix = 0; ix < nw; ix++) 
                        p1[ix].a = 0xffff;
                }
                newBM->PutPixels(0, y, nw, p1);
            }
            bmi = thmaker.BitmapToDIB(newBM, fUVGen->SymFlags(), xflags, forceW, forceH);
            newBM->DeleteThis();
        }
    }
    else
    {
        if (fBitmapPB->GetInt(kBmpRGBOutput) == 1)
            xflags |= EX_RGB_FROM_ALPHA;
        bmi = thmaker.BitmapToDIB(fBM, fUVGen->SymFlags(), xflags, forceW, forceH);
    }

    return bmi;
}

DWORD_PTR plLayerTex::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 MCHAR* plLayerTex::GetTextureName()
{
//  if (fBitmapPB->GetInt(kBmpUseBitmap))
    {
        PBBitmap *pbbm = fBitmapPB->GetBitmap(kBmpBitmap);
        if (pbbm)
            return pbbm->bi.Name();
    }

    return nullptr;
}

void plLayerTex::ISetPBBitmap(PBBitmap *pbbm, int index /* = 0 */)
{ 
    fBitmapPB->SetValue(ParamID(kBmpBitmap), 0, pbbm, index); 
}

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

//// GetSamplerInfo ///////////////////////////////////////////////////////////
//  Virtual function called by plBMSampler to get various things while sampling 
//  the layer's image

bool    plLayerTex::GetSamplerInfo( plBMSamplerData *samplerData )
{
    samplerData->fClipU = fBitmapPB->GetFloat( (ParamID)kBmpClipU );
    samplerData->fClipV = fBitmapPB->GetFloat( (ParamID)kBmpClipV );
    samplerData->fClipW = fBitmapPB->GetFloat( (ParamID)kBmpClipW );
    samplerData->fClipH = fBitmapPB->GetFloat( (ParamID)kBmpClipH );

    samplerData->fEnableCrop = fBitmapPB->GetInt( (ParamID)kBmpApply ) ? true : false;
    samplerData->fCropPlacement = fBitmapPB->GetInt( (ParamID)kBmpCropPlace );

    if( fBitmapPB->GetInt( (ParamID)kBmpDiscardAlpha ) )
        samplerData->fAlphaSource = plBMSamplerData::kDiscard;
    else if( fBitmapPB->GetInt( (ParamID)kBmpRGBOutput ) == 1 )
        samplerData->fAlphaSource = plBMSamplerData::kFromRGB;
    else
        samplerData->fAlphaSource = plBMSamplerData::kFromTexture;

    return true;
}

void plLayerTex::SetExportSize(int x, int y)
{
    fBitmapPB->SetValue(kBmpExportWidth, 0, x);
    fBitmapPB->SetValue(kBmpExportLastWidth, 0, x);
    fBitmapPB->SetValue(kBmpExportHeight, 0, y);
    fBitmapPB->SetValue(kBmpExportLastHeight, 0, y);
}

