> GoogleEarth/osgEarth type systems look incredible from altitudes of a > few thousand feet on up. But if you ever put your view point very > close to the ground and try to look at roads or airports, you'll see > that all the great imagery washes out and all that depth and shadow > goes away and you just see an ugly mishmash of unintelligible pixels. > We need to look good in some of these situations ... flying a 3 degree > glide slope means we are looking at the airport surface nearly edge > on. This is a worst case scenario for polygon texturing schemes.
Well, I do not talk about dropping off current engine totally. It's ok for what it was created, for <30km/<3Mach altitudes/speeds flight. There is no reason to dropping it in those conditions since most of users fly in it and most of users are satisfied. But it, as You of course know, completely useless for >25km altitudes. To make it become useful in that conditions it's, truly, very complicated story until we do not have completely new math as Outerra and similar engines of that type have to recalculate tiles in runtime somehow. I had talked about easy solution. To 25km everything works as now. From 25km there is flat surface what looks relief by shader. You can not see other craft what flying near surface on great distance from that altitude anyway. And no 5deg approaches on that altitude. Actually it's hard to see not runways but whole cities, so You may do not care about ground contacts. You will not touch Earth until You come lower there original engine will turned on already. Actually I had talked about 100km and higher altitudes. It could look, as I had shown, that way http://i.imgur.com/2TZKX.jpg As You may see, if there was some shader instead of multipoligonal tiles You could not see the difference. Of course that switch is somehow wrong solution since it absented in real life. But it could start work in visible time instead of other solutions. I understand what there is not so many people who interested in flying in something instead of Boing, F14, Bo, Cessna and so on. But I personally could do something for other guys who interested in X-15, SR-71, Mercury-Atlas and so on, because me personally interested in it. I suppose it's possible to automatically make that flat tiles with altitude in alpha channel out of current terrain in same resolution for every tile. Then there could not be some problems with matches. Regards, Victor. ------------------------------------------------------------------------------ What Every C/C++ and Fortran developer Should Know! Read this article and learn how Intel has extended the reach of its next-generation tools to help Windows* and Linux* C/C++ and Fortran developers boost performance applications - including clusters. http://p.sf.net/sfu/intel-dev2devmay _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
