Hi all,
I've a scene with 2 lights :
The first one (n°0) is the one for the whole scene, with ambiant component,
diffuse, specular, ...
The second one is attached on a node, and have to light only this node and
not all the scene.
To do that, I put some attenuation on the second light to avoid it light the
reste of the scene... but it does nothing !
light1->setAmbient(osg::Vec4(0.0f, 0.0f, 0.0f, 1));
light1->setDiffuse(osg::Vec4(intensity, 0, 0, 1));
light1->setSpecular(osg::Vec4(0.0f, 0.0f, 0.0f, 1));
light1->setPosition(osg::Vec4(p1, 0));
light1->setDirection(-p1);
light1->setSpotCutoff(0.5f);
light1->setConstantAttenuation(0.95f);
light1->setLinearAttenuation(0.0000001f);
light1->setQuadraticAttenuation(0.00000002f);
osg::LightSource* satLightSource1 = new osg::LightSource;
satLightSource1->setLight(light1.get());
satLightSource1->setLocalStateSetModes( osg::StateAttribute::ON );
satLightSource1->getOrCreateStateSet()->setMode(GL_LIGHTING,
osg::StateAttribute::ON);
osg::LightModel* lightModel1 = new osg::LightModel;
lightModel1->setAmbientIntensity(osg::Vec4(0.0f,0.0f,0.0f,1.0f));
//0,0,0,1
satLightSource1->getOrCreateStateSet()->setAttribute(lightModel1);
group->addChild(satLightSource1);
_root->getOrCreateStateSet()->setMode(GL_LIGHT1,
osg::StateAttribute::ON);
When I modify quadratic attenuation and linear attenuation, nothing appear
to be changed in the scene, and a lot of nodes are lighted in red...
Some idea why it doesn't works ?
Thanks,
Regards,
Vincent.
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