[Tilesathome] Windows problem

[Tino Miegel]

2007/12/12, Gert Gremmen <GertGremmen at ce-test.info>:
> Some investigations (debug=1) have led to the conclusion
>
> that a rename operation of the tilesxxxx.dir to tilesxxxx.upload
>
> is in error.
>
> When manually trying to rename the dir,  Windows says that
>
> the directory is in use by a process…..
>
>
>
> Now let's find out what process…..
>
Hi,

the problem is line 1446 in tilesGen.pl:

    my $Image = newFromPng GD::Image($File);

After this call, $File can't be unlinked (closed) anymore by the perl
process (the undef doesn't help, neither).
I've done some researching that lead to the conclusion, that this is a
problem with the GD perl implementation within ActivePerl for windows
(under linux files can be deleted even when still in use). So even
after finishing one tile, the t at -client can't delete the
"process_nr"-tempdir because of many ghost files...
So i've reimplementet tilesGen.pl to use Perlmagick instead of libGD.
It's working now (i've no perl experience), but my problem is, that i
can't figure out the compare-function of perlmagick. So detecting
black tiles, empty sea tiles and empty land tiles does not work now...
I am attaching the diff, perhaps some perl guru can figure out a
working solution ;)


Bye, Tino

PS:
Comparing e.g. the $EmptySeaImage with $EmptyLandImage gives me an
error value >0, but comparing one of the 3 reference images with our
temporary $SubImage gives always an undefined value or 0.0.
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