CWE-ou-minkata/Sources/Tools/MaxPlasmaMtls/Materials/plParticleMtl.cpp

/*==LICENSE==*

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*==LICENSE==*/
#include "hsTypes.h"
#include "plParticleMtl.h"
#include "../resource.h"
//extern ClassDesc2* GetMaxLayerDesc();
#include "../Shaders.h"

#include "iparamm2.h"

#include "MaxMain/plPlasmaRefMsgs.h"
#include "../plBMSampler.h"
#include "stdmat.h"
#include "../Layers/plLayerTex.h"
#include "../Layers/plLayerTexBitmapPB.h"
#include "MaxMain/MaxCompat.h"

extern HINSTANCE hInstance;

class plParticleMtlClassDesc : public ClassDesc2
{
public:
    int             IsPublic()      { return TRUE; }
    void*           Create(BOOL loading) { return TRACKED_NEW plParticleMtl(loading); }
    const TCHAR*    ClassName()     { return GetString(IDS_PARTICLE_MTL); }
    SClass_ID       SuperClassID()  { return MATERIAL_CLASS_ID; }
    Class_ID        ClassID()       { return PARTICLE_MTL_CLASS_ID; }
    const TCHAR*    Category()      { return NULL; }
    const TCHAR*    InternalName()  { return _T("ParticleMaterial"); }
    HINSTANCE       HInstance()     { return hInstance; }
};
static plParticleMtlClassDesc plParticleMtlDesc;
ClassDesc2* GetParticleMtlDesc() { return &plParticleMtlDesc; }

// For initializing paramblock descriptor
ParamBlockDesc2 *GetParticlePB();
#include "plParticleMtlPBDec.h"

const char *plParticleMtl::NormalStrings[] = // Make sure these match up in order with the Normal enum (in the header)
{
    "Normal: View Facing",
    "Normal: Up",
    "Normal: Nearest Light",
    "Normal: From Center",
    "Normal: Vel x Up x Vel",
    "Emissive"
};

plParticleMtl::plParticleMtl(BOOL loading) : fBasicPB(NULL)//, fBM(NULL), fUVGen(NULL)
{
#if 0 // This wasn't working on load
    // Initialize the paramblock descriptors only once
    static bool descInit = false;
    if (!descInit)
    {
        descInit = true;
        GetParticlePB()->SetClassDesc(GetParticleMtlDesc());
    }
#endif

    plParticleMtlDesc.MakeAutoParamBlocks(this);

//  if (!loading)
    {
        Reset();
        plLayerTex *tex = TRACKED_NEW plLayerTex;
        //tex->GetParamBlockByID(kBlkBasic)->SetValue(kBmpUseBitmap, 0, 1);
        fBasicPB->SetValue(kTexmap, 0, tex);

    }
    //fUVGen = GetNewDefaultUVGen();
}

void plParticleMtl::Reset() 
{
    fIValid.SetEmpty();
}

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

    return (ParamDlg*)masterDlg;    
}

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

Interval plParticleMtl::Validity(TimeValue t)
{
#if 0 // mf horse
    Interval valid = FOREVER;       

/*  for (int i = 0; i < fSubTexmap.Count(); i++) 
    {
        if (fSubTexmap[i]) 
            valid &= fSubTexmap[i]->Validity(t);
    }
*/  
//  float u;
//  fPBlock->GetValue(pb_spin,t,u,valid);
    return valid;
#else // mf horse
    const char* name = GetName();

    // mf horse - Hacking in something like real validity checking
    // to get material animations working. No warranty, this is just
    // better than nothing.
    Interval v = FOREVER;
    fBasicPB->GetValidity(t, v);

    return v;
#endif // mf horse
}

/*===========================================================================*\
 |  Subanim & References support
\*===========================================================================*/

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

TSTR plParticleMtl::SubAnimName(int i) 
{
    switch (i)
    {
    case 0: return fBasicPB->GetLocalName();
    case 1: return "Texmap";
    }

    return "";
}

Animatable* plParticleMtl::SubAnim(int i)
{
    switch (i)
    {
    case 0: return fBasicPB;
    case 1: return fBasicPB->GetTexmap(kTexmap);
    }

    return NULL;
}

int plParticleMtl::NumRefs()
{
    return 1;
}

RefTargetHandle plParticleMtl::GetReference(int i)
{
    switch (i)
    {
    case kRefBasic:  return fBasicPB;
    }

    return NULL;
}

void plParticleMtl::SetReference(int i, RefTargetHandle rtarg)
{
    if (i == kRefBasic)
        fBasicPB = (IParamBlock2 *)rtarg;
}

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

IParamBlock2* plParticleMtl::GetParamBlock(int i)
{
    return (IParamBlock2*)GetReference(i);
}

IParamBlock2* plParticleMtl::GetParamBlockByID(BlockID id)
{
    if (fBasicPB->ID() == id)
        return fBasicPB;

    return NULL;
}

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

            // see if this message came from a changing parameter in the pblock,
            // if so, limit rollout update to the changing item
            if (hTarget == fBasicPB)
            {
                IParamBlock2 *pb = (IParamBlock2*)hTarget;

                ParamID changingParam = pb->LastNotifyParamID();
                pb->GetDesc()->InvalidateUI(changingParam);
                
                // And let the SceneWatcher know that the material on some of it's
                // referenced objects changed.
                NotifyDependents(FOREVER, PART_ALL, REFMSG_USER_MAT);
            }
            break;
    }

    return REF_SUCCEED;
}

////////////////////////////////////////////////////////////////////////////////
// Subtexmap access

int plParticleMtl::NumSubTexmaps()
{
    return 1;
}

Texmap* plParticleMtl::GetSubTexmap(int i)
{
    if (i == 0)
        return fBasicPB->GetTexmap(kTexmap);

    return NULL;
}

void plParticleMtl::SetSubTexmap(int i, Texmap *m)
{
    if (i == 0)
        fBasicPB->SetValue(kTexmap, 0, m);
}

TSTR plParticleMtl::GetSubTexmapSlotName(int i)
{
    if (i == 0)
        return "Texmap";

    return "";
}

TSTR plParticleMtl::GetSubTexmapTVName(int i)
{
    return GetSubTexmapSlotName(i);
}


/*===========================================================================*\
 |  Standard IO
\*===========================================================================*/

#define MTL_HDR_CHUNK 0x4000

IOResult plParticleMtl::Save(ISave *isave)
{ 
    IOResult res;
    isave->BeginChunk(MTL_HDR_CHUNK);
    res = MtlBase::Save(isave);
    if (res!=IO_OK) return res;
    isave->EndChunk();

    return IO_OK;
}   

IOResult plParticleMtl::Load(ILoad *iload)
{
    IOResult res;
    int id;
    while (IO_OK==(res=iload->OpenChunk()))
    {
        switch(id = iload->CurChunkID())
        {
            case MTL_HDR_CHUNK:
                res = MtlBase::Load(iload);
                break;
        }
        iload->CloseChunk();
        if (res!=IO_OK) 
            return res;
    }

    return IO_OK;
}

/*===========================================================================*\
 |  Updating and cloning
\*===========================================================================*/

RefTargetHandle plParticleMtl::Clone(RemapDir &remap)
{
    plParticleMtl *mnew = TRACKED_NEW plParticleMtl(FALSE);
    *((MtlBase*)mnew) = *((MtlBase*)this); 
    mnew->ReplaceReference(kRefBasic, remap.CloneRef(fBasicPB));

    BaseClone(this, mnew, remap);
    mnew->fIValid.SetEmpty();   

    return (RefTargetHandle)mnew;
}

void plParticleMtl::NotifyChanged() 
{
    NotifyDependents(FOREVER, PART_ALL, REFMSG_CHANGE);
}

void plParticleMtl::Update(TimeValue t, Interval& valid) 
{   
    //StdUVGen *gen = (StdUVGen *)fUVGen;
    //gen->SetUScl(1.0f, t);
    //gen->SetVScl(1.0f, t);
    //gen->Update(t, fIValid);
    valid &= fIValid;
}

/*===========================================================================*\
 |  Determine the characteristics of the material
\*===========================================================================*/

void plParticleMtl::SetAmbient(Color c, TimeValue t) {}     
void plParticleMtl::SetDiffuse(Color c, TimeValue t) {}     
void plParticleMtl::SetSpecular(Color c, TimeValue t) {}
void plParticleMtl::SetShininess(float v, TimeValue t) {}
                
Color plParticleMtl::GetAmbient(int mtlNum, BOOL backFace)  { return Color(0,0,0); }
Color plParticleMtl::GetDiffuse(int mtlNum, BOOL backFace)  { return Color(0,0,0); }
Color plParticleMtl::GetSpecular(int mtlNum, BOOL backFace) { return Color(0,0,0); }

float plParticleMtl::GetXParency(int mtlNum, BOOL backFace)
{
    int         opacity = fBasicPB->GetInt( kOpacity, 0 );
    float       alpha = 1.0f - ( (float)opacity / 100.0f );

    return alpha;
}

float plParticleMtl::GetShininess(int mtlNum, BOOL backFace)    { return 0.0f; }
float plParticleMtl::GetShinStr(int mtlNum, BOOL backFace)  { return 0.0f; }
float plParticleMtl::WireSize(int mtlNum, BOOL backFace)        { return 0.0f; }

/////////////////////////////////////////////////////////////////

void plParticleMtl::SetupGfxMultiMaps(TimeValue t, Material *mtl, MtlMakerCallback &cb)
{
#if 0
    if (texHandleValid.InInterval(t)) {
        mtl->texture.SetCount(numTexHandlesUsed);
        for (int i=0; i<numTexHandlesUsed; i++) {
            if (texHandle[i]) {
                mtl->texture[i].textHandle = texHandle[i]->GetHandle();
                Texmap *tx = (*maps)[useSubForTex[i]].map;
                cb.GetGfxTexInfoFromTexmap(t, mtl->texture[i], tx );        
                SetTexOps(mtl,i,texOpsType[i]);
                }
            }
        return;
        }
#endif

#if 0   // WTF?!?!?!?
    Texmap *tx[2];
    int diffChan = stdIDToChannel[ ID_DI ];
    int opacChan = stdIDToChannel[ ID_OP ];
    tx[0] = (*maps)[diffChan].IsActive()?(*maps)[diffChan].map:NULL;
    tx[1] = (*maps)[opacChan].IsActive()?(*maps)[opacChan].map:NULL;
#endif

    int nsupport = cb.NumberTexturesSupported();
#if 0
    BITMAPINFO *bmi[NTEXHANDLES];

    int nmaps=0;
    for (int i=0; i<NTEXHANDLES; i++) {
        if (tx[i]) nmaps ++;
        bmi[i] = NULL;
        }
    mtl->texture.SetCount(nmaps);
    if (nmaps==0) 
        return;
    for (i=0; i<nmaps; i++)
        mtl->texture[i].textHandle = NULL;
    texHandleValid.SetInfinite();
    Interval  valid;
    BOOL needDecal = FALSE;
    int ntx = 0;
    int op; 

    int forceW = 0;
    int forceH = 0;
    if (tx[0]) {
        cb.GetGfxTexInfoFromTexmap(t, mtl->texture[0], tx[0]);      
        TextureInfo &ti = mtl->texture[0];
        if (ti.tiling[0]==GW_TEX_NO_TILING||ti.tiling[1]==GW_TEX_NO_TILING)
            needDecal = TRUE;
        op = needDecal?TXOP_ALPHABLEND:TXOP_MODULATE;
        bmi[0] = tx[0]->GetVPDisplayDIB(t,cb,valid,FALSE); 
        if (bmi[0]) {
            texHandleValid &= valid;
            useSubForTex[0] = diffChan;
            ntx = 1;
            forceW = bmi[0]->bmiHeader.biWidth;
            forceH = bmi[0]->bmiHeader.biHeight;
            }
        }
    if (tx[1]) {
        cb.GetGfxTexInfoFromTexmap(t, mtl->texture[ntx], tx[1]);        
        if (nsupport>ntx) {
            bmi[1] = tx[1]->GetVPDisplayDIB(t,cb,valid,TRUE); 
            if (bmi[1]) {
                texHandleValid &= valid;
                StuffAlpha(bmi[1], (*maps)[opacChan].amount, GetOpacity(t),ntx?whiteCol:pShader->GetDiffuseClr(t));
                texHandle[ntx] = cb.MakeHandle(bmi[1]); 
                bmi[1] = NULL; 
                mtl->texture[ntx].textHandle = texHandle[ntx]->GetHandle();
                SetTexOps(mtl,ntx,TXOP_OPACITY);
                useSubForTex[ntx] = opacChan;
                ntx++;
                }
            }
        else {
            if (!needDecal) {
                TextureInfo ti;
//              if (SameUV(mtl->texture[0],mtl->texture[1])) {
                    // Not really correct to combine channels for different UV's but what the heck.
                    bmi[1] = tx[1]->GetVPDisplayDIB(t,cb,valid,TRUE, forceW, forceH); 
                    if (bmi[1]) {
                        texHandleValid &= valid;
                        StuffAlphaInto(bmi[1], bmi[0], (*maps)[opacChan].amount, GetOpacity(t));
                        op = TXOP_OPACITY;
                        free(bmi[1]);
                        bmi[1] = NULL;
                        }
//                  }
                }
            }
        }
    if (bmi[0]) {
        texHandle[0] = cb.MakeHandle(bmi[0]); 
        bmi[0] = NULL; 
        mtl->texture[0].textHandle = texHandle[0]->GetHandle();
        SetTexOps(mtl,0,op);
        }
    mtl->texture.SetCount(ntx);
    numTexHandlesUsed = ntx;
#endif
}

/*===========================================================================*\
 |  Actual shading takes place
\*===========================================================================*/

void plParticleMtl::Shade(ShadeContext& sc) 
{
    // Get the background color
    Color backColor, backTrans;
    sc.GetBGColor(backColor, backTrans);

    ShadeWithBackground(sc, backColor);
}

//// Requirements ////////////////////////////////////////////////////////////
//  Tells MAX what we need to render ourselves properly, such as translucency,
//  two-sidedness, etc. Flags are in imtl.h in the MAX SDK.

ULONG   plParticleMtl::Requirements( int subMtlNum ) 
{
    ULONG       req = 0;


    req = Mtl::Requirements( subMtlNum );

    // Uncomment this to get the background color fed to our ShadeWithBackground()
    // (slower processing tho)
//  req |= MTLREQ_BGCOL;

    int blendType = fBasicPB->GetInt( kBlend );
    if( blendType == kBlendAdd )
        req |= MTLREQ_ADDITIVE_TRANSP | MTLREQ_TRANSP;
    else if( blendType == kBlendAlpha )
        req |= MTLREQ_TRANSP;
    else if( fBasicPB->GetInt( kOpacity, 0 ) != 100 )
        req |= MTLREQ_TRANSP;

    return req;
}

void plParticleMtl::ShadeWithBackground(ShadeContext &sc, Color background)
{
#if 1
    TimeValue t = sc.CurTime();
    Color color(0, 0, 0);
    float alpha = 0.0;

    // Evaluate Base layer
    Texmap *map = fBasicPB->GetTexmap(kTexmap);
    if (map && map->ClassID() == LAYER_TEX_CLASS_ID)
    {
        plLayerTex *layer = (plLayerTex*)map;
        AColor evalColor = layer->EvalColor(sc);

        color = evalColor;
        alpha = evalColor.a;
    }

#if 1
    AColor black;
    black.Black();
    AColor white;
    white.White();


    SIllumParams ip;
    if( fBasicPB->GetInt( kNormal ) == kEmissive )
    {
        // Emissive objects don't get shaded
        ip.diffIllum = fBasicPB->GetColor(kColorAmb, t) * color;
        ip.diffIllum.ClampMinMax();
        ip.specIllum = black;
    }
    else
    {
        //
        // Shading setup
        //

        // Setup the parameters for the shader
        ip.amb = black;
        ip.diff = fBasicPB->GetColor(kColor, t) * color;
        ip.spec = white;
        ip.diffIllum = black;
        ip.specIllum = black;
        ip.N = sc.Normal();
        ip.V = sc.V();


        //
        // Specularity
        //
        ip.sh_str = 0;
        ip.ph_exp = 0;
        ip.shine = 0;

        ip.softThresh = 0;



        // Do the shading
        Shader *myShader = GetShader(SHADER_BLINN);
        myShader->Illum(sc, ip);

        ip.diffIllum.ClampMinMax();
        ip.specIllum.ClampMinMax();
        ip.diffIllum = ip.amb * sc.ambientLight + ip.diff * ip.diffIllum;
    }

//  AColor returnColor = AColor(opac * ip.diffIllum + ip.specIllum, opac)
#endif

    // Get opacity and combine with alpha
    float opac = float(fBasicPB->GetInt(kOpacity, t)) / 100.0f;
    //float opac = 1.0f;
    alpha *= opac;

    // MAX will do the additive/alpha/no blending for us based on what Requirements()
    // we tell it. However, since MAX's formula is bgnd*sc.out.t + sc.out.c,
    // we have to multiply our output color by the alpha.
    // If we ever need a more complicated blending function, you can request the
    // background color via Requirements() (otherwise it's just black) and then do
    // the blending yourself; however, if the transparency isn't set, the shadows
    // will be opaque, so be careful.
    Color outC = ip.diffIllum + ip.specIllum;

    sc.out.c = ( outC * alpha );
    sc.out.t = Color( 1.f - alpha, 1.f - alpha, 1.f - alpha );

#endif
}

float plParticleMtl::EvalDisplacement(ShadeContext& sc)
{
    return 0.0f;
}

Interval plParticleMtl::DisplacementValidity(TimeValue t)
{
    Interval iv;
    iv.SetInfinite();

    return iv;  
}

Control *plParticleMtl::GetAmbColorController() { return GetParamBlock2Controller(fBasicPB, ParamID(kColorAmb)); }
Control *plParticleMtl::GetColorController() { return GetParamBlock2Controller(fBasicPB, ParamID(kColor)); }
Control *plParticleMtl::GetOpacityController() { return GetParamBlock2Controller(fBasicPB, ParamID(kOpacity)); }
Control *plParticleMtl::GetWidthController() { return GetParamBlock2Controller(fBasicPB, ParamID(kWidth)); }
Control *plParticleMtl::GetHeightController() { return GetParamBlock2Controller(fBasicPB, ParamID(kHeight)); }