> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:osg-users-
> [EMAIL PROTECTED] On Behalf Of Robert Osfield
> Sent: 02 July 2007 14:32
> To: osg users
> Subject: Re: [osg-users] osgconv scaling affects colours
>
> On 7/2/07, Roger James <[EMAIL PROTECTED]> wrote:
> > Robert,
> >
> > Thanks for the quick response. Doh, that was my first thought! But I got
> sidetracked when I saw that camera node in the scene and wondered what
> would happen if I took it out!
> >
> > I think I will hack a renormalize option into osgconv and see what
> happens.
> >
> > However, I still do not understand why removing the cone drawable, which
> as far as I can see is switched off by the switch node, should make things
> appear to work.
>
>
> Its probably the Optimizer's FlattenStaticTransform working in certain
> scene graph set ups and not in others, it can't flatten all scene
> graphs. When it doesn't flatten the lighting issue is probably
> apparent, so rather than a optimizer bug its the exact opposite - the
> optimize if fixing the problem!
>
You are as usual correct ;-) , if I had looked more closely at my test files I
would have noticed it.
Would you accept a submission for osgconv that added a GL_NORMALIZE to the
transform before fstv.removeTransforms is called. I am assuming that adding
this will not affect the fstv. If the fstv worked then the transform and its
associated state would have been removed.
e.g.
transform->setMatrix( C * R * S * T );
if (!S.isIdentity())
{
// Add a normalize state
transform->getOrCreateStateSet()->setMode(GL_NORMALIZE,
osg::StateAttribute::ON);
}
root->addChild(transform);
transform->addChild(node);
osgUtil::Optimizer::FlattenStaticTransformsVisitor fstv;
root->accept(fstv);
fstv.removeTransforms(root);
I could add a parameter to control this behaviour if that would help.
Alas the model I pulled this little test from has highlighted some other
lighting normal issues with daeReader. I will look into these when time permits.
Roger
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