This is that annoying feature of up-to-date 'convert' in which
converting to or from a PNG file defaults to returning RGB values that
have been 'helpfully' gamma-corrected (or some such) from the exact
data stored in the source file to some nonsense you didn't want.
Usually the worst this causes is slightly washed-out looking graphics,
but in this case, since my entire aim was to squash the image into a
specific set of exact RGB values so as to turn it into a paletted
Windows icon file, it caused an actual build failure when the next
loop in icon.pl couldn't find the gamma-corrected values in its
expected palette map, and no wonder.
It actually went off this morning, after an upgrade of ImageMagick,
and I found that it contained both unprintable characters in the
colour description and the wrong variable in the coordinate display.
supports monochrome icons, can deal with any size of image you're
mad enough to put in there, and will construct icons with whatever
combination of sizes and resolutions you feel like specifying. This
has involved a change in the command-line syntax, hence the
adjustment to Makefile.
(I don't imagine that the changes described here will be critical to
Puzzles any time soon, but I might reuse this script elsewhere and
then I won't want it to have arbitrary limitations.)
[originally from svn r7031]
screenshots into appropriate sizes and colour depths. This is all
done with a nasty Perl script, because ImageMagick does not output
correct .ICO format. Not sure why; it isn't _that_ hard.
I intend at some point to link the resulting icons into the actual
Windows puzzle binaries, but before then I have to make them
prettier: most of them would benefit from being derived from a
smaller crop of the puzzle screenshot instead of trying to fit the
whole thing in.
[originally from svn r7017]
