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"
53 lines
814 B
Perl
Executable File
53 lines
814 B
Perl
Executable File
#!/usr/bin/perl
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$I = 50; # inner radius (50 cm)
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$O = 80; # outer radius (80 cm)
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#$Y = 64; # image heights (pixels)
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#$X = 256; # image width (pixels)
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sub ang
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{
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local ($r) = @_;
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# (O-I)/Y = r*arc(a)
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# arc
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return ($O-$I)/$Y/$r;
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}
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if ($ARGV[0] eq "-r") {
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shift @ARGV;
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$rect = 1;
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}
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while (<>) {
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chop;
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if (/#define\s+\S+_width\s+(\d+)/) {
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$X = $1;
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next;
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}
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if (/#define\s+\S+_height\s+(\d+)/) {
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$Y = $1;
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next;
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}
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next unless /\s*0x/;
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s/^\s*//;
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s/(,|};)$//;
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push(@p, split /,/);
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}
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for ($x = 0; $x != $X; $x++) {
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for ($y = 0; $y != $Y; $y++) {
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$i = $x+$y*$X;
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$p = ((hex $p[$i >> 3]) >> ($i & 7)) & 1;
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next unless $p;
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if ($rect) {
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print "$x ", $Y-$y-1, "\n";
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} else {
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$r = ($Y-$y-1)/$Y*($O-$I)+$I;
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$a = &ang($O)*($x-$X/2);
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print $r*sin($a), " ", $r*cos($a), "\n";
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}
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}
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}
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