mirror of
git://projects.qi-hardware.com/antorcha.git
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a5694eba05
txt2xbm: convert text to XBM, using ghostscript stretch: resample XBM with rotation correction (x-axis only) xbm2gp: convert XBM to gnuplot, taking into account rotation plot: plot xbm2gp output t: run all the above to display "TEST"
79 lines
1.2 KiB
Perl
Executable File
79 lines
1.2 KiB
Perl
Executable File
#!/usr/bin/perl
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$L = 15; # bytes per line
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sub pick
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{
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local ($x, $y) = @_;
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my $i = $x+$y*$X;
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return ((hex $p[$i >> 3]) >> ($i & 7)) & 1;
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}
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$f = 0.001*shift @ARGV;
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while (<>) {
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if (/#define\s+(\S+)_width\s+(\d+)/) {
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print;
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$N = $1;
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$X = $2;
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next;
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}
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if (/#define\s+\S+_height\s+(\d+)/) {
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print;
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$Y = $1;
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next;
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}
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chop;
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next unless /\s*0x/;
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s/^\s*//;
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s/(,|};)$//;
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push(@p, split /,/);
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}
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FIRST: for ($x0 = 0; $x0 != $X; $x0++) {
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for ($y = 0; $y != $Y; $y++) {
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last FIRST if &pick($x0, $y);
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}
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}
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for ($x = $x0; $x != $X; $x++) {
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for ($y = 0; $y != $Y; $y++) {
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$x1 = $x if &pick($x, $y);
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}
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}
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$w = ($x1-$x0)+1;
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$off = int(($X-$x1+$x0)/2);
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#print STDERR "$X $x0 $x1 $w $off\n";
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# x' = x*(1+y*f)
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# x'/(1+y*f) = x
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# x'
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for ($y = 0; $y != $Y; $y++) {
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for ($x = 0; $x != $X; $x += 8) {
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$v = 0;
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for ($i = 0; $i != 8; $i++) {
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$t = $x+$i-$X/2;
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$t = int($t*(1-$y*$f)-$off+$X/2);
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next if $t < 0 || $t >= $X;
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$v |= 1 << $i if &pick($t, $y);
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}
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push(@r, sprintf("0x%02x", $v));
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}
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}
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print "static char ${N}_bits[] = {\n";
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$i = 0;
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for (@r) {
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print " " if !($i % $L);
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print $_;
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last if $i == $#r;
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$i++;
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print ",";
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print "\n" if !($i % $L);
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}
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print "};\n";
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