Skylark wrote: > > Just wondering, do you use this: > > hudCamera->setProjectionResizePolicy(osg::Camera::FIXED) > > It all depends on how you've set things up and how you want things to > behave. If you set as above, the projection will not change even if your > viewport changes size. This won't work if your marker in your HUD is > meant to follow some other object in the 3D scene, whose camera has a > different projection resize policy... Try the different policies and see > how they work for you, or check your main camera to see which policy it > uses (perhaps the default which is HORIZONTAL). >
A Good point J-S! When I was writing this hud display stuff I was fallowing the OSG Heads Up Display example. It's been so long ago. I'd got to see if I blindly added that in for some reason! I don't recall doing that or why I would do that! Anyway, it might be worth experimenting with that! Skylark wrote: > > On the other hand, you might have to save your 3D points somewhere and > reproject them when the window gets resized. You can either wire that in > your resizeGL function, or you can add a ResizedCallback to your > GraphicsContext (GraphicsWindow). > > It can be a pain to get everything match up correctly, but once you > understand how things fit together it all makes sense. You may also want > to place breakpoints and inspect the projection matrices (or the result > of getProjectionMatrixAsOrtho(), which is easier to interpret :-) ) > before and after the resize, and you'll understand what's going on. > > One page I like on the subject is > > http://www.songho.ca/opengl/gl_projectionmatrix.html > > it has nice diagrams, easy to read text and the math is well explained. > > Hope this helps, > > J-S > -- > ______________________________________________________ > Jean-Sebastien Guay > http://www.cm-labs.com/ > http://whitestar02.webhop.org/ > _______________________________________________ > osg-users mailing list > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > ------------------ > Post generated by Mail2Forum Well, I check the first thing out Monday - I'm on my day off today! Let you know what happens! BTW: does anyone remember what is the Default setting for the projection resizing policy? Thanks! D Glenn ------------------------ D Glenn (a.k.a David Glenn) - Moving Heaven and Earth! ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=35421#35421 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
