Re: [osg-users] Complete darkness
Sounds like default Light Model ambient Look at OpenGL docs for glLightModel GL_LIGHT_MODEL_AMBIENT. Cheers, Wojtek - Original Message - From: Necdet Can Atesman [EMAIL PROTECTED] To: osg-users@lists.openscenegraph.org Sent: Friday, February 29, 2008 1:10 AM Subject: [osg-users] Complete darkness Hi folks, I am unable to create complete darkness in osg. I'm setting the only light source to not emit anything, but the objects in my scene are still visible, although very faintly. Is there something wrong with the code, or is it just osg/opengl? osg::Light* light = new osg::Light(); light-setAmbient(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); light-setDiffuse(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); light-setSpecular(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); osgView* view = new osg::View(); osgView-setLightingMode(osg::View::HEADLIGHT); view-setLight(light); Thanks, Necdet Can ___ 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
Re: [osg-users] Complete darkness
osg::LightModel::setAmbientIntensity(const osg::Vec4 ambient) IIRC this controls the global ambient intensity. So setting this to zero might solve your problem. hth, Sebastian Necdet Can Atesman schrieb: Hi folks, I am unable to create complete darkness in osg. I'm setting the only light source to not emit anything, but the objects in my scene are still visible, although very faintly. Is there something wrong with the code, or is it just osg/opengl? osg::Light* light = new osg::Light(); light-setAmbient(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); light-setDiffuse(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); light-setSpecular(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); osgView* view = new osg::View(); osgView-setLightingMode(osg::View::HEADLIGHT); view-setLight(light); Thanks, Necdet Can ___ 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
Re: [osg-users] Complete darkness
Maybe just a setnumlight(0)... to replace default light by yours. Vincent 2008/2/29, Wojciech Lewandowski [EMAIL PROTECTED]: Sounds like default Light Model ambient Look at OpenGL docs for glLightModel GL_LIGHT_MODEL_AMBIENT. Cheers, Wojtek - Original Message - From: Necdet Can Atesman [EMAIL PROTECTED] To: osg-users@lists.openscenegraph.org Sent: Friday, February 29, 2008 1:10 AM Subject: [osg-users] Complete darkness Hi folks, I am unable to create complete darkness in osg. I'm setting the only light source to not emit anything, but the objects in my scene are still visible, although very faintly. Is there something wrong with the code, or is it just osg/opengl? osg::Light* light = new osg::Light(); light-setAmbient(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); light-setDiffuse(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); light-setSpecular(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); osgView* view = new osg::View(); osgView-setLightingMode(osg::View::HEADLIGHT); view-setLight(light); Thanks, Necdet Can ___ 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Complete darkness
2008/2/29, David Callu [EMAIL PROTECTED]: Hi Necdet Can Have you try to use an osg::LightModel with ambient == black in your scene ? In OpenGL, lighting is controlled by glLight and glLightModel. HTH David Callu 2008/2/29, Necdet Can Atesman [EMAIL PROTECTED]: Hi folks, I am unable to create complete darkness in osg. I'm setting the only light source to not emit anything, but the objects in my scene are still visible, although very faintly. Is there something wrong with the code, or is it just osg/opengl? osg::Light* light = new osg::Light(); light-setAmbient(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); light-setDiffuse(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); light-setSpecular(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); osgView* view = new osg::View(); osgView-setLightingMode(osg::View::HEADLIGHT); view-setLight(light); Thanks, Necdet Can ___ 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
Re: [osg-users] Complete darkness
Thanks everyone, setting the LightModel solved the problem. - Necdet Can Sebastian Messerschmidt wrote: osg::LightModel::setAmbientIntensity(const osg::Vec4 ambient) IIRC this controls the global ambient intensity. So setting this to zero might solve your problem. hth, Sebastian Necdet Can Atesman schrieb: Hi folks, I am unable to create complete darkness in osg. I'm setting the only light source to not emit anything, but the objects in my scene are still visible, although very faintly. Is there something wrong with the code, or is it just osg/opengl? osg::Light* light = new osg::Light(); light-setAmbient(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); light-setDiffuse(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); light-setSpecular(osg::Vec4d(0.0f, 0.0f, 0.0f, 1.0f)); osgView* view = new osg::View(); osgView-setLightingMode(osg::View::HEADLIGHT); view-setLight(light); Thanks, Necdet Can ___ 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
