Andy Ross writes: > >Christian Mayer wrote: >> I don't know if zipped packages help much for the kind of data you are >> sending. You can only compress redundant information > >Amen. He speaks the truth. > >But note that there is lots of opportunity for compression here; it's >just that dumb general-purpose algorithms like "zip" are unable to >find them for a single packet. A few ideas that occur to me: > >+ Position needn't send three full 64 bit doubles, since the position > will always be "near" the last one. Sending deltas will work (if > you are careful to handle potential bugs like successive round-off > errors), as will (reliably!) transmitting a "zone" coordinate every > so often and sending packets as deltas from that. If the updates > are always within ~100m of the last position, you can get each > position coordinate down to 15 bits or so and still achieve > millimeter precision.
Yup.. using deltas should be a big win You should probably take a look at how this is handled by SEDRIS http://www.sedris.org Norman _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
