Re: [Opensg-users] Poll: What file formats do we need?

[Allen B. <al...@vr...>]

jan p. springer wrote:

>Christoph F=FCnfzig said the following on 10/31/06 17:14:
>[ snip ]
> =20
>
>>Python bindings for OpenSG are really cool :-)
>>   =20
>>
>
>  actually they are :)
>
> =20
>
>>But I think executing GraphOps after reading a model/scene can be done=20
>>easily, already in Version 1.6.
>>You can create a GraphOpSeq by a string, listing all graph ops you want=
=20
>>with their parameters,
>>see method void GraphOpSeq::setGraphOps(const std::string params);
>>and SceneFileHandler::read can receive a GraphOpSeq to apply after load=
ing.
>>
>>So no need for weird filenames, I think  ;-)
>>   =20
>>
>
>  yes and no. the intention, again, for having pseudo loaders is when i =
want to
>  specify per model xforms, etc. but am going to merge them via a cmdlin=
e tool.
>  the model created is actually the one i want to use in the (final) app=
lication.
>  that is sth. like a poor-man's work flow not reallying on modeller too=
ls.
> =20
>
I agree with Jan here.  Having the ability to use pseudo loaders can=20
come in very handy and if we could come up with an easy and extensible=20
way to support it I don't see the problem.  For example as you point out=20
we can already setup graph ops in the scene handler using a string=20
listing the graph ops and their parameters, what if we just extended=20
this idea and made it possible to embedd this string as part of the=20
filename.  I don't know the exact format of the graph op strings now,=20
but couldn't we do something like this:

myfile.osb.[graphop1-graphop2[param1-param2]].graphop

Getting all the tokens right so they can be used as filename and are=20
unique would take some thought but it would be a very nice feature for=20
some users.

-Allen

>  having graphops in a pseudo-loader style would be cool too, but using =
them
>  on a file and using them on a loaded scene in an application are two d=
ifferent
>  animals (at least to me).
>
>	j.
>
> =20
>
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