The only thing I've used setLocalStateSetModes for is to turn the light
on/off. I've never used setStateSetModes, but it looks like it's just a
convenience function for adding the LightSource's light to the
rootStateSet. Essentially it's including the light for rendering.
If you want to apply a light to selective branches of the scene you would
add the light to the branches stateset, something like this.
osg::StateSet * ss = branch->getOrCreateStateSet();
if (onOff)
{
ss->setMode(GL_LIGHT0+_light->getLightNum(), osg::StateAttribute::ON);
}
else
{
ss->setMode(GL_LIGHT0+_light->getLightNum(), osg::StateAttribute::OFF);
}
To turn the light on/off you would turn the lightsource on/off.
lightsource->setLocalStateSetModes(ON/OFF)
Brian
[EMAIL PROTECTED] wrote: -----
To: [email protected]
From: hesicong2006 <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
Date: 02/23/2008 04:47AM
Subject: [osg-users] Question about osg::LightSource
I'm reading osglight.cpp, and in createLights() function where
osg::LightSource(lightS) set StatSet, here are two function:
lightS1->setLocalStateSetModes(osg::StateAttribute::ON);
lightS1->setStateSetModes(*rootStateSet,osg::StateAttribute::ON);
My question is what the function of the two StateSetModes, what is the
difference about these two functions? Thanks~~
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