----- Original Message ----- From: "Frederic Bouvier" <[EMAIL PROTECTED]> To: "FlightGear developers discussions" <[EMAIL PROTECTED]> Sent: Sunday, January 25, 2004 3:40 AM Subject: Re: [Flightgear-devel] Clouds Question
> Christopher S Horler wrote: > > > I've just spent the last hour looking for a function in the clouds3d > > source, I didn't find it. > > > > The 3d cloud is made from cloud particles, each instance of these > > particles has a position set with SetPosition(). These look like > > they're only set when a cloud is loaded, does this mean that there was > > never a function to generate customized positions of particles? > > My understanding of current 3d clouds is that the particule positions > are read from the files located in Data/SkyClouds in the base package. > How they were generated is a mystery for me, but the code isn't in FG or > SG. > > > If anyone finds it let me know, otherwise with algorithms are suitable > > for generating a set of not to ordered 3d points? (I thought someone > > like maybe Norman might know the answer to this...I'll be web searching > > after I eat). > The clouds are fixed in space and relative to each other. They are loaded as noted above. The files were generated with a seperate program created by Mark Harris as part of his research and dissertation. (google on Mark Harris or www.cs.unc.edu/~harrism/). You'll also find links to other on-going research in cloud building and rendering that may spawn some ideas on creating customized clouds. Creating a cloud universe based on meterological data would be the penultimate feature and not a trivial pursuit. Regards John W. _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
