Aurorae would be a nice addition indeed. Basically they could be simulated by using many squares with a translucent texture.
Haven't had any problems with transparency or coloring of the sun, though. The problem Steve addressed is actually caused "naturally" because the graphics-cards "cut out" hard-looking edges on overlapping objects. Mark Lee Elliott wrote: > I once tried to do some aurorae using very large 3d objects and > while I could see them ok I couldn't get any colour in to them - > they just looked white and the transparency I used in the > texture was ineffective, so I could see the entire object, sharp > edges and all :( > > dunno if you might have the same problem with using a 3d object > for the sun. > > Haven't got around to trying it yet but meteors might work ok. > > LeeE > > On Sunday 16 July 2006 20:14, Mark wrote: > >> Hi Curt, >> >> I've been thinking about the idea with the cylinder the last >> days. What I like about it is, that this way the fog of the >> distant objects is thicker at ground-level and gets thinner >> with increasing altitude. And it's less stress on the hardware >> than shaders. >> The cylinder could be part of the SGSky class, maybe as >> atmosphere-object. >> >> But I want to get the sun ready before touching anything else. >> So if anyone else would like to try out implementing the >> cylinder, that would be great.-) >> >> Bye, Mark >> >> Curtis L. Olson wrote: >> >>> Mark wrote: >>> >>>> Hi Steve, >>>> >>>> which line do you mean? The surface of the earth cutting of >>>> the sundisc? I agree this looks too sharp but I don't know >>>> how this could be improved with standards means. >>>> At least the sun's halos are blended with the fog already. >>>> >>> I've been wondering about placing a short cylinder between >>> the sky dome and the terrain. This would have "fog" color >>> at the base and blend to completely transparant at the top. >>> This would help hide the outer fringe of the tiles in some >>> circumstances, and it would allow things like the sun and >>> moon to blend smoothly into the "true" horizon. This could >>> also help with sky dome -> earth transition problems in >>> various areas. We might consider moving this cylinder up >>> and down to match the current view point altitude. This >>> should be really easy to implement without needing any fancy >>> opengl tricks (maybe make it part of they sky dome model), >>> but I just haven't had time to try it out. >>> >>> Curt. >>> >> -------------------------------------------------------------- >> ----------- Using Tomcat but need to do more? Need to support >> web services, security? Get stuff done quickly with >> pre-integrated technology to make your job easier Download IBM >> WebSphere Application Server v.1.0.1 based on Apache Geronimo >> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&; >> dat=121642 _______________________________________________ >> Flightgear-devel mailing list >> Flightgear-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/flightgear-devel >> > > > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _______________________________________________ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel > ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
