delay 1 frame when inserting new object

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On 23/10/2012 at 20:01, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   13 
Platform:      
Language(s) :     C++  ;

---------
i'm kinda new to sdk
here's what i did to create a simple polygon just by clicking the icon in the plugin menu

Bool MyPlugin::Execute(BaseDocument *doc)
{
BaseObject* mine = NULL;
mine = BaseObject::Alloc( Opolygon );
mine->SetName("MyPolygon");
doc->InsertObject( mine , NULL , NULL );
doc->AddUndo( UNDOTYPE_NEW, mine );
doc->Message(MSG_UPDATE);
return true;
}

problem is ...after i click...i need to press any where to update the document...help please

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On 23/10/2012 at 21:54, xxxxxxxx wrote:

mine->Message(MSG_UPDATE); // Not doc->!  
EventAdd(); // Let C4D know that it needs to update its managers

Also note that you should always check memory allocations/class instance creation:

Bool MyPlugin::Execute(BaseDocument *doc)
{
	BaseObject* mine = BaseObject::Alloc( Opolygon );  
      if (!mine)  return false;  
	mine->SetName("MyPolygon");
	doc->InsertObject( mine , NULL , NULL );
	doc->AddUndo( UNDOTYPE_NEW, mine );
	mine->Message(MSG_UPDATE);  
      EventAdd();  
	return true;
}

Finally, remember that you will need to cast the BaseObject into a PolygonObject in order to add and manipulate vertices and polygons using the latter's methods.  Use PolygonObject* pmine = ToPoly(mine) to do that (for instance).

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On 24/10/2012 at 00:19, xxxxxxxx wrote:

well thanks alot for this

now for the next fail ...

Bool MyPlugin::Execute(BaseDocument *doc)
{
BaseObject* mine = BaseObject::Alloc( Opolygon );
if (!mine)  return false;

mine->SetName("MyPolygon");


doc->InsertObject( mine , NULL , NULL );
doc->AddUndo( UNDOTYPE_NEW, mine );


mine->Message(MSG_UPDATE);
EventAdd();


PolygonObject\* pmine = ToPoly(mine);
pmine->Alloc(100,0);


Vector \*padr;
padr = pmine->GetPointW();


int i;
for (i=0;i<100;i++)
	padr _= Vector(0,0,0);


pmine->Message(MSG_UPDATE);


EventAdd();


return true;

}

program always crashes when i execute ....I'm sure im missing something ...

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On 24/10/2012 at 01:33, xxxxxxxx wrote:

Alloc() is a static method that returns a newly allocated PolygonObject, but as you already have a PolygonObject (pmine) you should call ResizeObject() instead:

pmine->ResizeObject(100,0);

Also in the for-loop you have to assign points position with [] or pointer arithmetic:

for (LONG i=0;i<100;i++)
    padr[i] = Vector(0,0,0);

or

for (LONG i=0;i<100;i++,padr++)
    *padr = Vector(0,0,0);

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On 24/10/2012 at 01:52, xxxxxxxx wrote:

thanks alot for the help
it worked...by the way....did i made any code mistakes ( i mean after the loop with msg update and c4d event)

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On 25/10/2012 at 05:38, xxxxxxxx wrote:

well ...it worked
but now i want to animate the points by giving them an array of vectors each frame ...

here's the code...and it crashes always...

Bool MyPlugin::Execute(BaseDocument *doc)
{
BaseObject* mine = BaseObject::Alloc( Opolygon );
if (!mine)  return false;

mine->SetName("MyPolygon");


doc->InsertObject( mine , NULL , NULL );
doc->AddUndo( UNDOTYPE_NEW, mine );


mine->Message(MSG_UPDATE);
EventAdd();


PolygonObject\* pmine = ToPoly(mine);
pmine->ResizeObject(100,0);


Vector \*padr;
padr = pmine->GetPointW();


int i;
for (i=0;i<100;i++){
	padr _= Vector(0,0,0);
};


pmine->Message(MSG_UPDATE);
EventAdd();




BaseTime time = doc->GetTime();
Real fps = doc->GetFps();
Real frame = time.GetFrame(fps);


CTrack \*MyTrack = mine->FindCTrack(DescID(DescLevel(CTpla,DTYPE_LONG,0)));
CCurve \*MyCurve = MyTrack->GetCurve();
CKey \*Key1 = MyCurve->AddKey(BaseTime(frame,fps));






//GePrint(RealToString(frame));
//GePrint(RealToString(fps));


return true;

}

another question ( as i'm still new :D) .... i'm using the cinema4d sdk solution in vs 2010 ...win 8 64 bit (win 7 64 bit compiler) ... what should i add in c++ general properties ...linker ..to do debug...

thanks in advance

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On 25/10/2012 at 07:22, xxxxxxxx wrote:

Originally posted by xxxxxxxx

_another question ( as i'm still new :D) .... i'm using the cinema4d sdk solution in vs 2010 ...win 8 64 bit (win 7 64 bit compiler) ... what should i add in c++ general properties ...linker ..to do debug...
_

To debug a plugin you have to build it in Debug configuration and set CINEMA.exe as the executable for debug session in Configuration properties->Debugging:Command. See also the docs at the Debug Information's page.

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On 25/10/2012 at 08:02, xxxxxxxx wrote:

thanks
still i need to know why the above code crashes (searched for pla data type...but didn't find any example...so i assumed it's long data type...though i think the fail isn't from data type ...

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On 25/10/2012 at 08:59, xxxxxxxx wrote:

Originally posted by xxxxxxxx

thanks
still i need to know why the above code crashes (searched for pla data type...but didn't find any example...so i assumed it's long data type...though i think the fail isn't from data type ...

CTrack *MyTrack = mine->FindCTrack(DescID(DescLevel(CTpla,DTYPE_LONG,0)));
CCurve *MyCurve = MyTrack->GetCurve();
CKey *Key1 = MyCurve->AddKey(BaseTime(frame,fps));

The track may be NULL. Have you tested that MyTrack isn't NULL?
You should create a track and insert it with InsertTrackSorted() instead.

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On 25/10/2012 at 10:43, xxxxxxxx wrote:

well at least now i know where it fails

but the test is false

CTrack *MyTrack = mine->FindCTrack(DescID(DescLevel(CTpla,DTYPE_LONG,0)));
if (!MyTrack){

MyTrack = CTrack::Alloc(mine,DescID(DescLevel(CTpla,DTYPE_LONG,0)));
if(!MyTrack)  return FALSE;
mine->InsertTrackSorted(MyTrack);
doc->AddUndo( UNDOTYPE_NEW, MyTrack );

};

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On 25/10/2012 at 15:58, xxxxxxxx wrote:

well i tried...and still don't know why it can't Alloc(CTpla) ...here's the code...

Bool MyPlugin::Execute(BaseDocument *doc)
{
BaseObject* mine = BaseObject::Alloc( Opolygon );
if (!mine)  return false;

mine->SetName("MyPolygon");

doc->InsertObject( mine , NULL , NULL );
doc->AddUndo( UNDOTYPE_NEW, mine );

mine->Message(MSG_UPDATE);
EventAdd();

PolygonObject* pmine = ToPoly(mine);
pmine->ResizeObject(100,0);

Vector *padr;
padr = pmine->GetPointW();

int i;
for (i=0;i<100;i++){
padr = Vector(0,0,0);
};
pmine- >Message(MSG_UPDATE);
EventAdd();
BaseTime time = doc- >GetTime();
Real fps = doc- >GetFps();
Real frame = time.GetFrame(fps);
CTrack *MyTrack = mine->FindCTrack(DescID(DescLevel(CTpla,CUSTOMDATATYPE_PLA,0)));
if (!MyTrack){

MyTrack = CTrack::Alloc(mine,DescID(DescLevel(CTpla,CUSTOMDATATYPE_PLA,0)));
if(!MyTrack)  return FALSE;
mine->InsertTrackSorted(MyTrack);
doc->AddUndo( UNDOTYPE_NEW, MyTrack );

};
CCurve *MyCurve = MyTrack- >GetCurve();
CKey *Key1 = MyCurve- >AddKey(BaseTime(frame,fps));
mine- >Message(MSG_UPDATE);
EventAdd(EVENT_ANIMATE);
//GePrint(RealToString(frame));
//GePrint(RealToString(fps));
return true;
_}

edited : changed DTYPE_LONG to _ CUSTOMDATATYPE_PLA

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On 26/10/2012 at 05:06, xxxxxxxx wrote:

Hi,

We can allocate a PLA track with the following DescID:

DescID descID = DescLevel(CTpla, CTpla, 0L);

Anyway, here's a piece of code (mainly taken from Robert Templeton's code in this post) that shows how to animate the points of a PolygonObject:

// Allocate a polygon object with 4 points and 1 polygon
PolygonObject *polyObj = PolygonObject::Alloc(4, 1);
if (!polyObj) return FALSE;
  
polyObj->SetName("MyPolygon");
doc->InsertObject(polyObj, NULL, NULL);
  
// Get point buffer
Vector *dpoints = polyObj->GetPointW();
  
// Get polygon buffer and initialize it
CPolygon *dpolygons = polyObj->GetPolygonW();
dpolygons[0].a = 0;
dpolygons[0].b = 1;
dpolygons[0].c = 2;
dpolygons[0].d = 3;
  
// Update polygon object and document
polyObj->Message(MSG_UPDATE);
EventAdd();
  
// Allocate PLA track
  
DescID descID = DescLevel(CTpla, CTpla, 0L);
CTrack *track = CTrack::Alloc(polyObj, descID);
if (!track) return FALSE;
polyObj->InsertTrackSorted(track);
  
// Get track curve to create keys for each frame
  
CCurve *seq = track->GetCurve();
if (!seq) return FALSE;
CKey *key = NULL;
  
// Sample Animation at each frame
  
ModelingCommandData mcd;
mcd.doc = doc;
mcd.op = polyObj;
BaseContainer mbc;
mbc.SetBool(MDATA_CURRENTSTATETOOBJECT_INHERITANCE, TRUE);
mbc.SetBool(MDATA_CURRENTSTATETOOBJECT_KEEPANIMATION, FALSE);
mcd.bc = &mbc;
mcd.flags = MODELINGCOMMANDFLAGS_0;
  
BaseObject *csto = NULL;
PointObject *defd = NULL;
  
LONG pointCount = polyObj->GetPointCount();
LONG pointSize = pointCount*sizeof(Vector);
const Vector *spoints = NULL;
Vector *points = NULL;
  
BaseTime stime = doc->GetMinTime();
BaseTime etime = doc->GetMaxTime();
Real fps = doc->GetFps();
LONG startf = stime.GetFrame(fps);
LONG endf = etime.GetFrame(fps);
LONG currentf = 0L;
  
for (; startf <= endf; startf += 1L)
{
    stime = BaseTime::BaseTime(startf, fps);
    currentf = stime.GetFrame(fps);
  
    // Animate document
  
    doc->SetTime(stime);
    doc->ExecutePasses(NULL, TRUE, TRUE, TRUE, BUILDFLAGS_0);
    EventAdd();
  
    // Current State to Object
  
    if (!SendModelingCommand(MCOMMAND_CURRENTSTATETOOBJECT, mcd)) return FALSE;
    csto = (BaseObject* )(mcd.result->GetIndex(0));
    AtomArray::Free(mcd.result);
    if (!csto) return FALSE;
  
    if (csto->IsInstanceOf(Onull))
        defd = ToPoint(csto->GetDown());
    else 
        defd = ToPoint(csto);
  
    if (!defd) return FALSE;
  
    // Add key
  
    key = seq->AddKey(stime);
    if (!key)
    {
        BaseObject::Free(csto);
        return FALSE;
    }
  
    // Add PLA key data
  
    spoints = defd->GetPointR();
    if (!spoints)
    {
        BaseObject::Free(csto);
        break;
    }
  
    // Modify points for animation
  
    points = defd->GetPointW();
    if (!points) return FALSE;
  
    points[0] = Vector(-1000*currentf,0,-1000*currentf);
    points[1] = Vector(-1000*currentf,0,1000*currentf);
    points[2] = Vector(1000*currentf,0,1000*currentf);
    points[3] = Vector(1000*currentf,0,-1000*currentf);
  
    // Copy source points (read) to original polygon object points (write)
    CopyMem(spoints, dpoints, pointSize);
  
    // Fill key with default values
    if (!track->FillKey(doc, polyObj, key))
    {
        BaseObject::Free(csto);
        return FALSE;
    }
  
    // Do not forgot to free CSTO command's object
    BaseObject::Free(csto);
}
  
doc->SetTime(doc->GetMinTime());

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On 26/10/2012 at 05:23, xxxxxxxx wrote:

wow
u made my day
thanks alot for the help ....keep the good support ^_^

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On 27/10/2012 at 02:18, xxxxxxxx wrote:

well i've found that size of vector is 24 bytes...this means vector data is considered (double)?which is real in c4d library

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On 27/10/2012 at 02:19, xxxxxxxx wrote:

another question...does points have rotation? i've found in the sdk there's position and tangent tags...but when i try to rotate points it doesn't seem to rotate in viewport(resets gizmo rotation each time)

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On 31/10/2012 at 08:58, xxxxxxxx wrote:

well i've solved the problems and found answers

just when i was reading the posts i noticed everytime i type a for loop and type the array brackets it doesnt appear (just for readers to notice that it's an iteration over array index)