mirror of
git://projects.qi-hardware.com/antorcha.git
synced 2024-11-25 20:33:10 +02:00
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
|
|
$I = 50; # inner radius (50 cm)
|
|
$O = 80; # outer radius (80 cm)
|
|
#$Y = 64; # image heights (pixels)
|
|
#$X = 256; # image width (pixels)
|
|
|
|
|
|
sub ang
|
|
{
|
|
local ($r) = @_;
|
|
|
|
# (O-I)/Y = r*arc(a)
|
|
# arc
|
|
return ($O-$I)/$Y/$r;
|
|
}
|
|
|
|
|
|
if ($ARGV[0] eq "-r") {
|
|
shift @ARGV;
|
|
$rect = 1;
|
|
}
|
|
|
|
while (<>) {
|
|
chop;
|
|
if (/#define\s+\S+_width\s+(\d+)/) {
|
|
$X = $1;
|
|
next;
|
|
}
|
|
if (/#define\s+\S+_height\s+(\d+)/) {
|
|
$Y = $1;
|
|
next;
|
|
}
|
|
next unless /\s*0x/;
|
|
s/^\s*//;
|
|
s/(,|};)$//;
|
|
push(@p, split /,/);
|
|
}
|
|
|
|
for ($x = 0; $x != $X; $x++) {
|
|
for ($y = 0; $y != $Y; $y++) {
|
|
$i = $x+$y*$X;
|
|
$p = ((hex $p[$i >> 3]) >> ($i & 7)) & 1;
|
|
next unless $p;
|
|
if ($rect) {
|
|
print "$x ", $Y-$y-1, "\n";
|
|
} else {
|
|
$r = ($Y-$y-1)/$Y*($O-$I)+$I;
|
|
$a = &ang($O)*($x-$X/2);
|
|
print $r*sin($a), " ", $r*cos($a), "\n";
|
|
}
|
|
}
|
|
}
|