James Turner wrote:
> Please let us know what help you need to make it happen, [...]
Just a quick message for a better understanding of where trouble is
still hiding:
1.) As far as I can tell there's still no reliable solution for
creating proper, smooth seams between a newly built terrain tile and
the adjacent, old tiles.
The "fgfs-construct" honours two flags "--no-write-shared-edges" and
"--use-own-shared-edges" which were meant to serve as a solution when
the "Shared" directory of the previous full terrain build is available,
but the underlying mechanics don't work in every case. Sometimes the
success seems to depend on how flat the terrain is, sometimes the
result looks just random.
2.) I think I've successfully built CORINE-based terrain on a single
"fgfs-construct" process up to the size of "--xdist=10 --ydist=10",
(which covers an area of 20 degree longitude and latitude).
"I think", because I didn't fly the terrain in FG, but on the disk it's
been a chunk of plausible size. In order to let "fgfs-construct"
process such a large section on a single run, I've removed the entire
cpu-time and mem-alloc limit section from src/BuildTiles/Main/main.cxx
Surprisingly there seems to be another limit with really large areas.
Supplying the flags "--xdist=19 --ydist=18" (around a center at
"--lon=9.875 --lat=49.375", but there's no difference with "--lon=10
--lat=49") seem to work nicely (test is still running, but looks good
so far), but just swapping the numbers for xdist and ydist or selecting
any bigger number for either of them results in "fgfs-construct"
pretending to having finished successfully, but writing not more than
approx. 30 MByte of terrain tiles to the disk.
Until now I haven't done any search for the cause, just writing down
what I found out this afternoon.
Cheers,
Martin.
--
Unix _IS_ user friendly - it's just selective about who its friends are !
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