Re: setting up propmodels for referencing

["Tim Leydecker" <BauerOink(at)gmx.de>]

Hi Bernard,

thanks for the detailed answer.

> > -Should the reference model(scene) have a group/parentlocator?

> You mean under the model? No problem, you can put groups under models.
> If you have above the reference model (in the scene where it is
> imported), you can as well. Maybe I don't really understand the
> question.

You basically answered my question in the next sentences below:

> I would recommend that when you export the model, it is at the origin
> with no SRT. In the scene where it it imported, put it under a null
> and SRT that null. I have experienced many times a situation where a
> reference model that had "built-in" SRTs would change position when
> re-opening the scene, as well as cases when a referenced model with no
> SRT but moved directly in the scene would revert back to its imported
> SRTs once the scene is re-open. When leaving everything at the origin
> and using nulls to SRTs the models you fully control the SRTs.

Regarding changing pivots and SRT,...

> As for changing centers and pivots, well, it's up to you to test if it 
> breaks
> your rigs, screws up animation or simply changes the SRTs of the model
> or its children. Personally I'd avoid changing such things once the
> model started to be referenced into scenes.

I expect to add detail based on individual shots, checked my workflow
again and decided that I will better have one (backround)scene including
everything (~35 MB data), render the camera draft and do the animations
with the backround as rotoscopeplate(s), when satisfied, merge everything
and break it up into layers for rendering. This way I can also mix Maya and
XSI renderings in progress easily and save the I/O overhead and diskspace.

Thanks for inspiring me to do that,

Cheers

tim





----- Original Message ----- 
From: "Bernard Lebel" <3dbernard(at)gmail.com>
To: <XSI(at)Softimage.COM>
Sent: Saturday, March 18, 2006 4:16 PM
Subject: Re: setting up propmodels for referencing


> > Model-setup:
> >
> > -Should the reference model(scene) have a group/parentlocator?
>
> You mean under the model? No problem, you can put groups under models.
> If you have above the reference model (in the scene where it is
> imported), you can as well. Maybe I don't really understand the
> question.
>
>
> > -Is it better to put the reference to the origin and do the positioning
> > when furnishing the scene or should I put it to it´s expected position?
>
> I would recommend that when you export the model, it is at the origin
> with no SRT. In the scene where it it imported, put it under a null
> and SRT that null. I have experienced many times a situation where a
> reference model that had "built-in" SRTs would change position when
> re-opening the scene, as well as cases when a referenced model with no
> SRT but moved directly in the scene would revert back to its imported
> SRTs once the scene is re-open. When leaving everything at the origin
> and using nulls to SRTs the models you fully control the SRTs.
>
>
> > Shading:
> >
> > I exept shadertweaking on a per-shot base, how do I make sure
> > referencemodels will stay editable materialwise on a per-shot basis?
> >
> > Can I override materials and clustersets on references in XSI?
>
> In fact, that is the only you can change materials of referenced
> models, wich are looked. You use material propagated through groups
> and partitions, or you can use overrides. However, the same
> limitations exists as far as clusters go. Trying to override a cluster
> material that is in a reference model doesn't sound very..... safe.
> Personally I avoid cluster materials like the plague.
>
>
>
> > Masterfile:
> >
> > Are there any naming_conventions unsupported or worth being
> > noted for referencing?
>
> Not as far as I know.
>
>
> > I/O LOD levels, swap-outs:
> >
> > How well does editing masterfiles and propagation to references
> > work? What if I need to to modeling changes that influence the pivot?
>
> Changes on the emdl file are accepted as soon as you reopen the file
> in wich they are referenced, or when you explicitely update the
> referenced model in the scene (including changing resolutions). As for
> changing centers and pivots, well, it's up to you to test if it breaks
> your rigs, screws up animation or simply changes the SRTs of the model
> or its children. Personally I'd avoid changing such things once the
> model started to be referenced into scenes.
>
>
> Cheers
> Bernard
>
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