On Wed, 1 Oct 2008 18:21:29 -0600 "Paul Martz" <[EMAIL PROTECTED]> wrote:
Thanks for the quick answer. :-) > Have you looked at the examples? I'm sure there's an ortho example > somewhere. Try searching the code. It _does_ work (I used it in an RTT > example recently), so this is almost certainly a bug in your code. I never thought it is something else,than a bug in my code ;) I looked at the osgpick example and got the triangle displayed. Though it seems I have to use an extra osg::Camera node. Sorry,but I have some new strange thing: It seems like all nodes with entirely positive z coordinates are not displayed, though my viewing volume still should be [-1.1] in z. I tried to play with setCullingMode of both cameras, but it did not change a thing. I also tried disabling the geode's depth test without success. This seems to be an OSG thing, because when I have 2 triangles one with positive and one with negative z coordinates,both get displayed. here is the code: #include <osgViewer/Viewer> #include <osgText/Text> #include <osg/ShapeDrawable> #include <osg/MatrixTransform> #include <osg/Geometry> int main(int argc,char** argv) { osgViewer::Viewer the_viewer; osg::ref_ptr<osg::Camera> camera = new osg::Camera(); camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF); camera->setViewMatrix(osg::Matrix::identity()); camera->setProjectionMatrixAsOrtho(-1,1,-1,1,-1,1); camera->setClearMask(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT); osg::ref_ptr<osg::Geode> the_geode = new osg::Geode(); osg::ref_ptr<osg::Geometry> the_geometry = new osg::Geometry(); osg::ref_ptr<osg::Vec3Array> the_array = new osg::Vec3Array(); // change this to (0,0,.1) to make the triangle disappear the_array->push_back(osg::Vec3(0,0,0)); the_array->push_back(osg::Vec3(1,0,.1)); the_array->push_back(osg::Vec3(0,1,.1)); the_geometry->setVertexArray(the_array.get()); the_geometry->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::TRIANGLES,0,3)); the_geode->addDrawable(the_geometry.get()); camera->addChild(the_geode.get()); the_viewer.setSceneData(camera.get()); while(!the_viewer.done()) the_viewer.frame(); } _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org