Hi All, This is a two part question Part 1;
One of the figures that I have to present to the viewer is the width & length of the area of terrain that is covered in the window view. Back when we where doing this in Performer, we had set zoom points, so we had an idea of the width & length as it related to the extents of the terrain. Now I’m dealing in a round earth that I have to factor the curve of the terrain surface and a more dynamic zoom than I used before. Good news is that I know what’s the altitude of the camera is from my theoretical ellipsoid at any given time. Assuming that the terrain fallows the theoretical ellipsoid OSG has, the camera is always pointed to some point towards the center of the earth, and there is actual terrain under foot, is there a function that could give me the length and width of the terrain that’s within that cameras field of view? I'd like to know before I get deep into weighting something that I later find out I didn’t need to do! Part 2; We here have discovered that we might need to go 1Gig and beyond to get better performance from or old Performer stuff. That means that we have to shop for new test cards to see what works for the old Performer stuff and keep in mind the new OSG stuff. So one of the cards someone brought up to get is an ATI card - maybe a FireGL card - I'm not sure! I know that most of this is going to have effect the OpenGL side so if it works well, it will be an improvement with OSG as well as Performer. Other than that I was wondering if there was any else that I should be aware of. I know that I had a hard time setting up an ATI card I had on my fedora core box – I ended up using Susi Linux, but that was the only experience I had using ATI cards in Linux boxes. ... Thank you! Cheers, D Glenn ------------------------ D Glenn (a.k.a David Glenn) - Join the Navy and See the World ... from your Desk! ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=27455#27455 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
