mirror of
https://github.com/wesnoth/wesnoth
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28 lines
650 B
Perl
28 lines
650 B
Perl
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print "usage: $0 <input> <stem>" and exit 0 if $#ARGV != 1;
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my ($input,$stem) = @ARGV;
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sub process {
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my $in=shift || die;
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my $edge=shift || die;
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my $out=shift || die;
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system <<EOF;
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pngtopnm -alpha $edge >/tmp/edge-alpha.pgm;
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pngtopnm $edge >/tmp/edge.ppm;
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ppmtopgm /tmp/edge.ppm >/tmp/edge.pgm;
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pngtopnm $in >/tmp/bg.ppm;
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pnmcomp -alpha=/tmp/edge.pgm /tmp/bg.ppm /tmp/edge.ppm | pnmtopng -alpha /tmp/edge-alpha.pgm >$out;
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EOF
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}
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foreach (glob "${stem}-*.png") {
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my $edge=$1 if /$stem-(.*).png/;
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if($edge=~/^[news-]*$/) {
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process("${input}.png","${stem}-${edge}.png","${input}-${edge}.png");
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}
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}
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