Re: [CPP] How can I determine if a model is a instance

[Guy Rabiller <guy(at)alamaison.fr>]

Hi Steve,

strange, I've just tried your code and I get 1 Parameters Count on Instance Groups.

Try with this code, see if it works for you:


// ---------------------------------------------------------------------------
    Application oApp;

    CRef oSel( oApp.GetSelection()[0] );

    // ===[ Model Selected ? ]================================================
    if( oSel.GetClassID() == siModelID ) {

        // ---[ Get Owners ]--------------------------------------------------
        CRefArray oOwners( Model(oSel).GetOwners() );
        long      iCount ( oOwners.GetCount()      );
        long      i;

        // ---[ Find Groups ]-------------------------------------------------
        for( i=0; i<iCount; ++i ) {
            if( oOwners[i].GetClassID() == siGroupID ) {

                // ---[ Get Parameters Count ]--------------------------------
                Group oGroup ( oOwners[i]                        );
                long  iParams( oGroup.GetParameters().GetCount() );

                oApp.LogMessage( L"Group: [" + oGroup.GetFullName() + L"] (" +
                                 CValue(iParams).GetAsText() + L")" );
            }
        }
    }
// ---------------------------------------------------------------------------

--
guy rabiller | 3d technical director (at) LaMaison





Steve Yin a écrit :

hi, I got some new, when I check this in SDK explorer, it only shows one parameter, but if i use these codes:

 

  ownerArray=modelObj.GetOwners();

 

  //check to see if this model is a instanced, if it is, export it
  for(long j=0; j<ownerArray.GetCount(); j++){
   //one of it's owner is group
   if(ownerArray.GetItem(j).GetClassID()==XSI::siGroupID){
    instanceGroup=ownerArray.GetItem(j);
    XSIApp.LogMessage(instanceGroup.GetParent().GetClassIDName());
    XSIApp.LogMessage(XSI::CValue(instanceGroup.GetParameters().GetCount()));

 

    //the group only have 1 parameter, and it's parent is a model is a instance group
    if(instanceGroup.GetParent().IsValid() && instanceGroup.GetParameters().GetCount()==1l &&
     instanceGroup.GetParent().GetClassID()==XSI::siModelID){

 

I always get 5 parameters. what's wrong with my code?

 

----- Original Message -----

From: "Guy Rabiller" <guy(at)alamaison.fr>

To: <XSI(at)Softimage.COM>

Sent: Wednesday, November 30, 2005 7:37 PM

Subject: Re: [CPP] How can I determine if a model is a instance

>
> Hi Steve,
>
> either the GetMaster command or if you need the ObjectModel approach,
> try this heuristic:
> ( I think this might be the GetMaster approach ):
>
> -> To Check if a Model is an Instance:
> ( and to find its Master )
> 1) Check if one of the Model.GetOwners() is of ClassID siGroupID.
> 2) Check if the Group.GetParameters().GetCount() is 1 or 5.
> If it is 1 it is either an "InstanceGroup" of a Master Model or an
> "Associated Models" of a Light.
> From here, to distinguish the two of them, either check the name of the
> Group ( wich is rarely changed by the user ), or just to be sure, check
> if the Owner of the Group - there must be only 1 - is of Class siModelID.
> ( then you've found your master - or source - model )
>
> -> To Check if a Model is a Master
> 1) Check if one of its Groups - if any - has Parameters Count equal to 1.
> If yes, then it has been instanciated and is/was a Master.
> ( you cant remove a Model InstanceGroup )
>
> Tell me if that works for you.
>
> Regarding Clones, freeze works here in v5, without the need to save/open.
> --
> guy rabiller | 3d technical director (at) LaMaison
>
>
> Steve Yin wrote:
>
>> no, there is no such a property.
>>
>>     ----- Original Message -----
>>     *From:* kim aldis <mailto:kim(at)cg-soup.com>
>>     *To:* XSI(at)Softimage.COM <mailto:XSI(at)Softimage.COM>
>>     *Sent:* Wednesday, November 30, 2005 5:28 PM
>>     *Subject:* RE: [CPP] How can I determine if a model is a instance
>>
>>     check to see if the model has a master property.
>>
>>         ------------------------------------------------------------------------
>>         *From:* owner-xsi(at)Softimage.COM
>>         <mailto:owner-xsi(at)Softimage.COM>
>>         [mailto:owner-xsi(at)Softimage.COM] *On Behalf Of *Steve Yin
>>         *Sent:* 30-November-2005 08:48
>>         *To:* XSI(at)Softimage.COM <mailto:XSI(at)Softimage.COM>
>>         *Subject:* [CPP] How can I determine if a model is a instance
>>
>>         Hi people:
>>             I have a c++ problem, I'm trying to write a plugin for
>>         xsi, Now I need to determine if a model is a instance, and if
>>         it is, get the source model of instance.
>>           
>>             I know cloned object have a opterator called copyop, but
>>         seems instanced model do not have this operator.
>>         
>>             BTW, How can I change a cloned object to normal object? in
>>         XSI4.2 I just freeze the cloned object, save and open, then it
>>         will change to normal object. in XSI 5 this method(maybe a xsi
>>         bug) does not working.
>>         
>>         
>>             Thanks :)
>>
>
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