Hello OSGers! :) I am porting an application from OSG3.0.0 to OSG3.0.1. One of the reasons I am doing this is because of a well known bug with osgText::Text. In the new version of OSG this problem is fixed and the text renders perfectly. In my application I have a series of text labels (osgText::Text) attached to some nodes in my scenegraph. All these nodes combined result a bounding sphere with a radius of 25 units. The labels are configured like this:
Code: osgText::Text* label = new osgText::Text; label->setDataVariance(osg::Object::DYNAMIC); label->setFont( font ); label->setCharacterSize( 22 ); label->setFontResolution( 22, 22 ); label->setColor( osg::Vec4(1.0f, 1.0f, 1.0f, 1.0f )); label->setPosition( position ); label->setAlignment( osgText::Text::CENTER_BASE_LINE ); label->setAxisAlignment( osgText::Text::SCREEN ); label->setCharacterSizeMode( osgText::Text::SCREEN_COORDS ); // I tried OBJECT_COORDS too. It won't make any difference. label->setBackdropColor(osg::Vec4(0,0,0,1)); label->setBackdropType( osgText::Text::OUTLINE ); label->setBackdropImplementation( osgText::Text::STENCIL_BUFFER ); label->setBackdropOffset(0.2f,0.2f); label->setAutoRotateToScreen( true ); label->setText( my_label_text ); At some point in my application I wants to calculate the overall bounding sphere of my scenegraph (which only includes my model nodes with the attached labels) by calling the function osg::Node::getBound() on my root node. When I do this, the BoundingSphere I get has a huge radius, and not a radius of 25 units. Looks like OSG calculates the bounding sphere of the osgText::Text in screen space and does not map the screen space bounding sphere coordinates to the current model view space coordinates. Is there any way to do this automatically? Or somehow tell OSG not to take into consideration the osgText::Text bounding spheres when calculating the bounding sphere of the whole scenegraph? One solution I can think of is to set a custom ComputeBoundingSphereCallback and do all the calculations myself. Any other ideas? Thanks a lot for your time! Cheers, George ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=43830#43830 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
