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
