Thank you Robert, I think I'm unclear on how to scale the subgraph.
I tried adding a PositionAttitudeTransform object as a child of the AutoTransform and scaling it. I also tried adding the AutoTransform as a child to a PositionAttitudeTransform that is scaled. Neither seemed to work. Am I doing something wrong? My goal is to have my drawable object the same size no matter how much you zoom in or out, but I need to control the initial size. Is their a better way of doing this? Code Snippets: PositionAttitudeTransform object as a child of the AutoTransform ------------------------------------------------------------------ osg::Group* root = new osg::Group(); osg::Geode* geode = new osg::Geode(); //AutoTrans osg::AutoTransform* at = new osg::AutoTransform; at->setAutoScaleToScreen(true); at->setAutoRotateMode(osg::AutoTransform::ROTATE_TO_SCREEN); //Initial Scale osg::PositionAttitudeTransform* postrans = new osg::PositionAttitudeTransform(); osg::Vec3 modelScale; double value = 10000; modelScale.set(value,value,value); postrans->setScale( modelScale ); geode->addDrawable(new Symbol(getEntityTD())); postrans->addChild(geode); at->addChild(postrans); root->addChild(at); return root; AutoTransform as a child to a PositionAttitudeTransform ------------------------------------------------------------------ osg::Group* root = new osg::Group(); osg::Geode* geode = new osg::Geode(); //AutoTrans osg::AutoTransform* at = new osg::AutoTransform; at->setAutoScaleToScreen(true); at->setAutoRotateMode(osg::AutoTransform::ROTATE_TO_SCREEN); geode->addDrawable(new Symbol(getEntityTD())); at->addChild(geode); //Initial Scale osg::PositionAttitudeTransform* postrans = new osg::PositionAttitudeTransform(); osg::Vec3 modelScale; double value = 10000; modelScale.set(value,value,value); postrans->setScale( modelScale ); postrans->addChild(at); root->addChild(postrans); return root; -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield Sent: Tuesday, July 24, 2007 1:16 AM To: osg-users@lists.openscenegraph.org Subject: Re: [osg-users] Possible Bug in osg::AutoTransform Hi Nelson, This isn't a bug, when you do scale to screen what it does it uses puts the subgraph into screen space by adjusting the scale parameter to fit. If you want to change the scale of the subgraph then it'll need to built with screen space coords in mind. Robert. _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org