[How to add shortcut to Model into Chor]

I still have an issue. As I understood without

chor->InsertChildAtTail(mdl, TRUE);

model will be added, but with default settings. When I apply some transformations on brand new model it works only locally. After, in scene all values are equal zero. Actually start hating this shit =(

[How to add shortcut to Model into Chor]

ok. after removing this line

chor->InsertChildAtTail(mdl, TRUE);

it start working as expected. Kind of understand why it behaves odd

[How to add shortcut to Model into Chor]

I found the way (taken from SDK)

HChor *chor;
HModelCache *hmc_new;
HModel *working = hmc_new->NewInstance(chor);
chor->InsertChildAtTail(working,TRUE);

For some reason it hangs the app

 

What I do:

IEPolyModel* model = new IEPolyModel;
// setting up model..

HModelCache *hmc = HModelCache::New("Foo", TRUE);
hmc->MergeIEModel(model, "Foo", 0.0, TRUE, TRUE);
delete model;

HProject* prj = GetHProject();

if (HChorContainer* chors = prj->GetChildChorContainer()) {
    for (HHashObject* c = chors->GetChild(); c; c = c->GetSibling()) {
        HChor* chor = (HChor*)c;            
        HModel* mdl = hmc->NewInstance(chor);
        chor->InsertChildAtTail(mdl, TRUE);
    }
}

Any ideas?

[How to add shortcut to Model into Chor]

Didn't get from SDK how to do it.

[IEPolyModel (names of materials)]

solved. i rewrote procedure

[IEPolyModel (names of materials)]

After bullding IEPolyModel from HModelCache I have HashArray m_attrlist of Attr objects. One of class members, as i correctly understood, contains material name Attr::char m_name [256]. In my case, with all correct materials groups, I have garbage in this buffer. Could somebody confirm what this is right way to get materials names?

[Access to clip image properties?]

-

[Access to clip image properties?]

Ok Rodney,

If so, could you rename this topic something like "How to access to clip image properties"

[Access to clip image properties?]

It's actually here. Thanks for hint

HDecalContainer* decals = hmc->GetChildDecalContainer();
if (decals) {
    for (HHashObject* _decal = decals->GetChild(); _decal; _decal = _decal->GetSibling()) {
        HDecal* decal = (HDecal*)_decal;
        HDecalClipContainer* clips = decal->GetChildDecalClipContainer();
        if (clips) {
            for (HHashObject* _clip = clips->GetChild(); _clip; _clip = _clip->GetSibling()) {
                HClip* clip = (HClip*)_clip;
                HDecalClip* clipInfo = (HDecalClip*)_clip;
                UINT kind = clipInfo->GetKind()->GetValue(); // here is a type
                printf("- %s, type: <%d>\n", clip->GetMatchName().buf, kind);
            }
        }
    }
}

[Access to clip image properties?]

Can anybody tell me how to reach this property? I need understand which exactly type overrides by image.

 

[How to save HModelCache into mdl file]

Thanks Steffen, I already spotted infinite loop issue

[How to create surface through API]

Ughhh, I had error in function that set Magnitude for all control points. I didn't check for infinite loop when I was getting next CPS from spline. That's why it was freezing. Actually basic technique from 1 picture works fine now.

[How to create surface through API]

I found the way of creation patches. Order of adding new faces looks like this. It's a shame that every single step in exploring SDK feels like fight for survival =(. If something goes wrong AM just hanging, no assert, no exceptions, nothing

 

[How to create surface through API]

hmm... when i do extrusion of spline with 2 control points 2 times, shouldn't it be the same topology of patch model? it works fine for 1 patch. When i'm adding another one it causes an error

[How to create surface through API]

 

I'm trying to build IEPatchModel like on picture (just 2 patches), but Hash is freezing on stage:

hmc->MergeIEModel(model, "foo", 0.0, TRUE, TRUE);

Can somebody tell me how to do it properly? What I'm doing wrong? Thanks.

 

Here is a source code:

void CreatePlane2() {
    float cps[] = {
        0, 0, 0,        
        0, 1, 0,        
        1, 1, 0,        
        1, 0, 0,        
        2, 1, 0,      
        2, 0, 0   
    };    

    int faces4[] = {       
        0, 1, 2, 3,        
        3, 2, 4, 5    
    };    

    int numCps = 6;    
    int numPatches = 2;    

    // create model    
    IEPatchModel* model = new IEPatchModel;    
    for (int i = 0; i < numCps; i++) {        
        model->m_vertexlist.Add(Vector(cps[i*3], cps[i*3 + 1], cps[i*3 + 2]));    
    }    

    // set up patches    
    for (int i = 0; i < numPatches; i++) {        
        IEPatch* patch = new IEPatch(NULL);        
        model->m_patcharray.Add(patch);       
 
        // sep patch indices        
        for (int j = 0; j < 4; j++) {            
            patch->m_vertexid[j] = faces4[i*4 + j];        
        }
    }    

    HModelCache *hmc = HModelCache::New("plane");    
    hmc->MergeIEModel(model, "foo", 0.0, TRUE, TRUE);    
    delete model;
}

[How to save HModelCache into mdl file]

Does anybody know how to set In/Out Mantitude for control points in brand new created IEPatchModel object?

Let's say I want to create a new flat patch like quad poly

 

// create model
IEPatchModel* model = new IEPatchModel;
model->m_vertexlist.SetSize(4);
model->m_vertexlist[0] = Vector(0, 0, 0);
model->m_vertexlist[1] = Vector(1, 0, 0);
model->m_vertexlist[2] = Vector(1, 1, 0);
model->m_vertexlist[3] = Vector(0, 1, 0);

// set up patches
model->m_patcharray.SetSize(1);
IEPatch* patch = new IEPatch(NULL);
model->m_patcharray.SetAt(0, patch);

// vxt index
for (int i = 0; i < 4; i++) {
    patch->m_vertexid[i] = i;
} 

HModelCache *hmc = HModelCache::New("plane");
hmc->MergeIEModel(model, "foo", 0.0, TRUE, TRUE);

Right now i have to set In/Out Mantitude after merging IEModel:

HSpline* sp = hmc->GetHeadSpline();
while (sp) {
    HCP* cp = sp->GetHeadCP();
    while (cp) {
        cp->SetInMagnitude(0.0);
        cp->SetOutMagnitude(0.0);
        cp = cp->GetNext();
    }
    sp = sp->GetNextSpline();
}

Can I set them up on stage of creation patch somehow?

[How to save HModelCache into mdl file]

Thanks Malo, very useful info!

[How to save HModelCache into mdl file]

thanks ill try this as well

[How to save HModelCache into mdl file]

ok, have some ideas. gonna use poly iterators, they have access to original patch. i can combine 4, 3 to back to 5 =)

[How to save HModelCache into mdl file]

Rob, i tried. it converts 5 exactly to 4, 3. See picture above with OBJ marker.

[How to save HModelCache into mdl file]

Thanks for information, Steffen!

I'm writing applink for 3DCoat and I faced with the problem that doing import/export process won't so simple, since Hash is purely spline-patch based app. As I understood you have great experience with Hash SDK. Could you tell me.. Do you know any other way to get polymesh than using BuildExportModel method? I'd like to get similar topology like patches have (4 or 5 points faces without forcing post-tesselation down to 4, 3). Thanks for your answers

[How to save HModelCache into mdl file]

Actually i found a bug in HModelCache class method

IEPolyModel *BuildExportModel(IEPolyModelParms *iemp, const char *modelmapfilename);

When it builds polymesh for model cache, it flips some face normals in 5 patches, sometimes. I suppose this is a bug in algorithm.

surprisingly it works fine if i do export to OBJ, but for 3DS, LWO it doesn't work properly

 

[How to save HModelCache into mdl file]

I assume that help won't come =(

[How to save HModelCache into mdl file]

Danke Fuchur!

[How to save HModelCache into mdl file]

Thanks for quick response!

Since AM:SDK doesn't have any documentation, i could just guess what each class supposed to do =) from examples.
As I understood ModelCache is actually shape object, which holds topology information. Model - is instance of ModuleCache. I would like to save specific object back to mdl format after editing its topology. When i run plugin's dialog i have access to HTreeObject that i can cast to HModelCache and get access to its methods.The thing is - it's still reference to mdl file (not actually geometry).
How to jump inside mdl container?

In entry point in HxtOnCommand I have HTreeObject *htreeobject, with type of HOT_MODEL

then I execute CPluginApp dialog and casting this pointer to HModelCache*

// Here is code example:
HModelCache* shape = (HModelCache*)g_selectedTreeObject;

FileStream hs;
hs.Open(filename);
shape->Save(hs);

In beginning of output file i have:
LinkedModel=../Data/Models/Actors/Thom/Thom.mdl

Should be ModelFile container

...