Hi,
Try adding your osg::Light to a StateSet, i.e. (pseudocode)
group = osg::Group()
lightsource = osg::LightSource()
light = osg::Light()
light.setLightNum(0)
....
lightsource.setLight(light)
group.addChild(lightsource)
group.getOrCreateStateSet().setAttribute(light, osg::StateAttribute::ON)
viewer.setSceneData(group)
It seems StateAttribute callbacks are only called when the attribute is
set on a StateSet.
Setting the light as state attribute on "lightsource" does not seem to
work, which is a bit surprising as a osg::LightSource is a Group and
therefore also has a StateSet.
Actually, I find the whole Light / LightSource (which is a Group) /
Light set as a StateAttribute a bit confusing.
Paul
Vincent Bourdier wrote:
Hi,
I just need to move a light, and for that I try to use a callback.
So I implement a simple class lightMoveCallback : public
osg::StateAttribute::Callback
with virtual void operator()(osg::StateAttribute* ss,
osg::NodeVisitor* nv);
but the callback is never called...
I use :
light->setUpdateCallback(new lightMoveCallback())
thanks for help,
Regards,
Vincent.
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