Method apply

components/sceneutil/util.cpp:101–143

    }

    void GlowUpdater::apply(osg::StateSet* stateset, osg::NodeVisitor* nv)
    {
        if (mColorChanged)
        {
            this->reset();
            setDefaults(stateset);
            mColorChanged = false;
        }
        if (mDone)
            return;

        // Set the starting time to measure glow duration from if this is a temporary glow
        if ((mDuration >= 0) && mStartingTime == 0)
            mStartingTime = nv->getFrameStamp()->getSimulationTime();

        double time = nv->getFrameStamp()->getSimulationTime();
        int index = static_cast<int>(time * 16) % mTextures.size();
        stateset->setTextureAttribute(
            mTexUnit, mTextures[index], osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE);

        if ((mDuration >= 0)
            && (time - mStartingTime > mDuration)) // If this is a temporary glow and it has finished its duration
        {
            if (mOriginalDuration >= 0) // if this glowupdater was a temporary glow since its creation
            {
                removeTexture(stateset);
                this->reset();
                mDone = true;
                // normally done in StateSetUpdater::operator(), but needs doing here so the shader visitor sees the
                // right StateSet
                mNode->setStateSet(stateset);
                mResourceSystem->getSceneManager()->recreateShaders(mNode);
            }
            if (mOriginalDuration < 0) // if this glowupdater was originally a permanent glow
            {
                mDuration = mOriginalDuration;
                mStartingTime = 0;
                mColor = mOriginalColor;
                this->reset();
                setDefaults(stateset);
            }
        }
    }

    bool GlowUpdater::isPermanentGlowUpdater()
    {