Allen Bierbaum wrote:
> In one of our applications we need to cache some image data. Right now
> we are caching it as jpg files but I would really like to cache it in a
> faster pure binary form for OpenSG. The brought up the obvious idea of
> using .osb files. The way the osb reader/writer works functions mainly
> on field container anyway so I thought it would be a no-brainer to get
> working. Unfortunately it looks like the interface is tied to the idea
> of saving node fc's (and any fc's that are part of the tree linking from
> that node).
>
> So my question is this, would it be possible to modify the osb
> reader/writer to support field containers in general or can anyone
> suggest an alternative way to do something like this?
>
I've used the NFIO classes to write images in osb, like this:
bool OSGImageCacher::doWrite(std::ostream& os)
{
return OSG::NFIOBase::writeFC(m_image, os, "");
}
I then read them back like this:
OSG::FieldContainerPtr fc = OSG::NFIOBase::readFC(is, "");
if (!fc) {
s_log.err("OpenSG failed to read '%s'", path.string().c_str());
return false;
}
m_image = OSG::ImagePtr::dcast(fc);
Cheers,
/Marcus
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