Hi Brad -- The original author of the importer isn't around these days, though
he does make an occasional rare appearance. I wrote the exporter half of the plugin.
Looks like PrimaryRecords.cpp has a class, Extension, for processing an
Extension record, but it doesn't appear to parse/save any of the data. Looks
like it just creates a Group node and assigns it the name from the extension
record, then returns. You would probably want to add some code here to handle
the extension record contents the way that you require.
The code you quoted below pertains to handling the PushExtension and
PopExtension control records, which is only tangentially related to Extension
records themselves.
-Paul
Brad Colbert wrote:
Paul,
Thanks for the quick reply.
I've looked through the source and find a lot of references to
"Extension" but doubt that is what it's for.
I was hoping to catch the eye of the author here.
-B
P.S.
One example, I think may or may not be close:
Document.cpp:void Document::pushExtension()
Document.cpp: OSG_WARN << "No current primary in
Document::pushExtension()." << std::endl;
Document.cpp:void Document::popExtension()
Document.cpp: OSG_WARN << "Can't decide primary in
Document::popExtension()." << std::endl;
Document.h: // Extension stack
Document.h: void pushExtension();
Document.h: void popExtension();
-----Original Message-----
From: [email protected] [mailto:osg-users-
[email protected]] On Behalf Of Paul Martz
Sent: Wednesday, September 22, 2010 10:35 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] OpenFlight: Reading the "Extension Record"
Check the source code. If I recall correctly, the loader reads in
comment
records and stores them as UserData in the scene graph, but I'm not
sure about
extension records. The only way to know for certain is to check the
source.
-Paul
Brad Colbert wrote:
Hello all,
We would like to store some extra meta-data along with (embedded) in
our
OpenFlight models. Looking at the OpenFlight spec, there appears to
be
this thing called an "Extension Record" that can contain many
things,
even XML which is what we are interested in.
To cut-to-the-chase, does the OpenFlight loader in OSG read in any
way
these "Extension Record"s or, worse, preclude the reading of the
record?
I know this is a pretty open question but I'm just starting to dig
into
this.
Any information will be more than I have now, thanks!
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