CWE-ou-minkata/Sources/Tools/MaxPlasmaMtls/Layers/plDynamicEnvLayer.cpp

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*==LICENSE==*/
///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  plDynamicEnvLayer - Dynamic EnvironmentMap MAX Layer                     //
//  Cyan, Inc.                                                               //
//                                                                           //
//// Version History //////////////////////////////////////////////////////////
//                                                                           //
//  8.22.2001 mcn - Created.                                                 //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include "hsTypes.h"
#include "plDynamicEnvLayer.h"

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

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


//// Externs //////////////////////////////////////////////////////////////////

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

//// ClassDesc Definition /////////////////////////////////////////////////////

class plDynamicEnvLayerClassDesc : public ClassDesc2
{
public:
    int             IsPublic()      { return TRUE; }
    void*           Create(BOOL loading = FALSE) { return TRACKED_NEW plDynamicEnvLayer(); }
    const TCHAR*    ClassName()     { return GetString(IDS_DYNAMIC_ENVMAP_LAYER); }
    SClass_ID       SuperClassID()  { return TEXMAP_CLASS_ID; }
    Class_ID        ClassID()       { return DYNAMIC_ENV_LAYER_CLASS_ID; }
    const TCHAR*    Category()      { return TEXMAP_CAT_ENV; }
    const TCHAR*    InternalName()  { return _T("PlasmaDynamicEnvMapLayer"); }
    HINSTANCE       HInstance()     { return hInstance; }
};
static plDynamicEnvLayerClassDesc plDynamicEnvLayerDesc;
ClassDesc2* GetDynamicEnvLayerDesc() { return &plDynamicEnvLayerDesc; }

#include "plDynamicEnvLayerBitmapPB.cpp"

//// Constructor/Destructor ///////////////////////////////////////////////////

plDynamicEnvLayer::plDynamicEnvLayer() :
    fBitmapPB(NULL),
    fUVGen(NULL),
    fTexHandle(NULL),
    fTexTime(0),
    fIValid(NEVER)
{
    plDynamicEnvLayerDesc.MakeAutoParamBlocks(this);
    ReplaceReference(kRefUVGen, GetNewDefaultUVGen());  
}

plDynamicEnvLayer::~plDynamicEnvLayer()
{
    IDiscardTexHandle();
}

void    plDynamicEnvLayer::GetClassName( TSTR& s ) 
{
    s = GetString( IDS_DYNAMIC_ENVMAP_LAYER ); 
}

//// Reset ////////////////////////////////////////////////////////////////////

void plDynamicEnvLayer::Reset() 
{
    GetDynamicEnvLayerDesc()->Reset(this, TRUE);    // reset all pb2's
    NotifyDependents(FOREVER, PART_ALL, REFMSG_CHANGE);

    fIValid.SetEmpty();
}

//// Update ///////////////////////////////////////////////////////////////////

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

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

    valid &= fIValid;
}

//// Validity /////////////////////////////////////////////////////////////////

Interval plDynamicEnvLayer::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;
}

//// CreateParamDlg ///////////////////////////////////////////////////////////

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

    return masterDlg;   
}

//// SetDlgThing //////////////////////////////////////////////////////////////

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

//// Reference Functions //////////////////////////////////////////////////////

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

RefTargetHandle plDynamicEnvLayer::GetReference( int i ) 
{
    switch( i )
    {
        case kRefUVGen:     return fUVGen;
        case kRefBitmap:    return fBitmapPB;
        default: return NULL;
    }
}

void    plDynamicEnvLayer::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;
            break;
    }
}

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

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

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

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

//// Clone ////////////////////////////////////////////////////////////////////

RefTargetHandle plDynamicEnvLayer::Clone( RemapDir &remap ) 
{
    plDynamicEnvLayer *mnew = TRACKED_NEW plDynamicEnvLayer();
    *((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;
}

//// SubAnim Functions ////////////////////////////////////////////////////////

int plDynamicEnvLayer::NumSubs()
{
    return 1;
}

Animatable  *plDynamicEnvLayer::SubAnim( int i ) 
{
    switch( i )
    {
        case kRefBitmap:    return fBitmapPB;
        default: return NULL;
    }
}

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

//// NotifyRefChanged /////////////////////////////////////////////////////////

RefResult   plDynamicEnvLayer::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);
            }
        }
        break;

        case REFMSG_UV_SYM_CHANGE:
            IDiscardTexHandle();  
            break;
    }

    return REF_SUCCEED;
}

//// Save/Load ////////////////////////////////////////////////////////////////

#define TEX_HDR_CHUNK 0x5000

IOResult plDynamicEnvLayer::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 plDynamicEnvLayer::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;
}

//// EvalColor ////////////////////////////////////////////////////////////////

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

AColor plDynamicEnvLayer::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);

    color.White();

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

float plDynamicEnvLayer::EvalMono(ShadeContext& sc)
{
    return Intens(EvalColor(sc));
}

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

ULONG plDynamicEnvLayer::LocalRequirements(int subMtlNum)
{
    return MTLREQ_VIEW_DEP;
}

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

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

BITMAPINFO *plDynamicEnvLayer::GetVPDisplayDIB(TimeValue t, TexHandleMaker& thmaker, Interval &valid, BOOL mono, BOOL forceW, BOOL forceH)
{
    return NULL;
}

DWORD plDynamicEnvLayer::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;
    }
}

//// MustBeUnique /////////////////////////////////////////////////////////////
//  Fun stuff here. If our anchor is set to nil (i.e. "self"), then we must be 
//  unique for each object we're applied to. However, that means the material 
//  must *ALSO* be unique. Hence why this function is called by
//  hsMaterialConverter::IMustBeUniqueMaterial().

bool    plDynamicEnvLayer::MustBeUnique( void )
{
    if( fBitmapPB->GetINode( kBmpAnchorNode ) == nil )
        return true;

    return false;
}