I have my terrasync utility up to a point where it has some basic functionality so I thought I should share it with you all. Being tired last night and not thinking of a better place, I have included it in TerraGear cvs for now: TerraGear/src/Utils/TerraSync/ You don't need to build all of terragear to build this util, you can just run autogen.sh; configure; then cd to the TerraSync dir and run make; make install there.
I have a DSL connection at home and it seems to work well if I keep my airspeed below 450 kts and my visibility below 23 km. But push the visibility out beyond that or fly faster and it's really easy to outfly my bandwidth. I haven't tried this on a dialup connection, but you may want to stick with the C172 or Cub if you give that a shot. Here is the README.txt with a bit more information: TerraSync ========= Usage: terrasync -p <port> [ -s <rsync_source> ] -d <rsync_dest> Example: $ fgfs --atlas=socket,out,1,localhost,5500,udp --fg-scenery=/data1/Scenery-0.7.9 $ nice terrasync -p 5500 -d /data1/Scenery-0.7.9 Requirements: - rsync util installed in your path. - mkdir util installed in your path. TerraSync is a utility that is intended to run as a light weight background process. It's purpose is to monitor the position of a FlightGear flight and pre-fetch scenery tiles from a remote server based on the current FlightGear position. This allows you to do a base install of FlightGear with no add on scenery. Now just go and fly anywhere. Scenery is fetched "just in time" and accumulated on your HD so it is already there next time you fly. You can fly anywhere and essentially just the scenery you need is auto-installed as you fly. Terrasync runs as a separate process and expects the --atlas=port format to be sent from fgfs. The fgfs output tells the terrasync util where FlightGear is currently flying. Terrasync will then issue the appropriate commands to rsync the surrounding areas to your local scenery directory. The user need to choose a port for FlightGear->TerraSync communication and then specify the server location and destation scenery tree. As you fly, terrasync will periodically refresh and pull any new scenery tiles that you need for your position from the server. This also works if the scenery on the scenery server is updated. Rsync will pull any missing files, or any updated files. There is a chicken/egg problem when you first start up in a brand new area. FlightGear is expecting the scenery to be there *now* but it may not have been fetched yet. I suppose without making a more complex protocol, the user will need to be aware of this. The user could restart flightgear after the initial rsync completes, and then after that everything should be good, assuming the flight track is "continuous" and the user has the necessary bandwidth to keep up with flight speeds. Final notes: I have set up an initial scenery server at baron.flightgear.org::Scenery-0.7.9. This is the 0.7.9 vintage scenery with airports rebuilt to include lighting. Alex Perry also has a partial rsync server, but I don't know it's current status. William Riley has rebuilt the entire world, but the tiles are zipped in 10x10 degree chunks on on a relatively low bandwidth connection. There are aspects of the 0.7.9 scenery I like including the quality of the terrain, but William scenery has roads and streams which is also nice. Regards, Curt. -- Curtis Olson IVLab / HumanFIRST Program FlightGear Project Twin Cities [EMAIL PROTECTED] [EMAIL PROTECTED] Minnesota http://www.menet.umn.edu/~curt http://www.flightgear.org _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel