Am Sonntag, den 30.12.2007, 17:09 +0000 schrieb LeeE: > On Sunday 30 December 2007 09:47, Detlef Faber wrote: > > Hello, > > > > I've been experimenting with 3D Trees to replace the Billboard > > trees. Here are some screenshots: > > > > http://www.sol2500.net/flightgear/forest1.jpg > > http://www.sol2500.net/flightgear/forest2.jpg > > http://www.sol2500.net/flightgear/forest3.jpg > > > > The pictures were taken with V1.0, using a tree density 50 times > > higher than default. This makes NOE flying really interesting :-) > > > > There is an archive with the Models here: > > > > http://www.sol2500.net/flightgear/trees.zip > > > > It replaces the coniferous-tree and coniferous-tree3 models > > in /data/Models/Trees. Also included is a materials.xml with the > > higher density and without billboarding. > > > > Comments and suggestions are welcome. > > > > > > Greetings > > > > Detlef Faber > > > > > > http://sol2500.net/flightgear > > I think they look pretty good:) > > I've been thinking about doing something very much like this in the > context of a trekking/hiking/orienteering adaptation of FG. > > Are you thinking of LODing the trees as a next step? With, at a > guess, three to five levels of LOD I think this could be an even > more effective feature.
Yes that is my intention. Another thing I like to add is the trees react to the season property (no leaves in winter, green leaves in summer, yellow and brown ones in winter). Maybe this could be extended to agricultural zones (plowed/growing crop fields, etc). > > It's Interesting to see that they have less impact than billboards > but I wonder if this means that there's a problem FG's billboards > implementation - after all, a billboards are just single (split) > poly objects, albeit ones that rotate to face the viewer. > > Could it be that the overhead of rotating many simple billboard > objects accounts for the performance hit over an equivalent number > of more complex static models? > I agree with Josh that this is due to the transparency used. There seems to be a bug in the transparency handling, because I didn't get this DList stack overflow with billboarding 3d trees. > Nice work anyway:) > > LeeE > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
