Hi Robert, Yes I know, i forgot to paste the code :
osg::ref_ptr<osg::Light> light1 = new osg::Light; light1->setLightNum(1); Sorry Any idea ? because the red light is visible, but no attenuation modify it... and this is the real problem. Thanks, Vincent. 2008/8/6 Robert Osfield <[EMAIL PROTECTED]> > Hi Vincent, > > You'll need to set the light number of the light via > light->setLightNum(num); The first light should be 0, and your second > one 1. > > Robert. > > On Wed, Aug 6, 2008 at 10:53 AM, Vincent Bourdier > <[EMAIL PROTECTED]> wrote: > > 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. > > > > _______________________________________________ > > osg-users mailing list > > osg-users@lists.openscenegraph.org > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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