| 12 |
|
|
| 13 |
my $pdf = shift @ARGV || die "usage: $0 filename.pdf"; |
my $pdf = shift @ARGV || die "usage: $0 filename.pdf"; |
| 14 |
|
|
| 15 |
my $limit = ''; |
my $debug = 1; |
| 16 |
$limit = '-f 1 -l 1'; |
|
| 17 |
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my $from_page = 1; |
| 18 |
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my $to_page = 4; |
| 19 |
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|
| 20 |
my $tiles_path = 'tiles/basic'; |
my $tiles_path = 'tiles/basic'; |
|
rmtree $tiles_path if -d $tiles_path; |
|
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mkpath $tiles_path || die "can't create $tiles_path: $!"; |
|
| 21 |
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|
| 22 |
foreach my $zoom ( 1 .. 12 ) { |
foreach my $path ( $tiles_path, 'ppm' ) { |
| 23 |
|
rmtree $path if -d $path; |
| 24 |
|
mkpath $path || die "can't create $path: $!"; |
| 25 |
|
} |
| 26 |
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|
| 27 |
|
print "redering test 100dpi page to get pixel size\n"; |
| 28 |
|
system("pdftoppm -f 1 -l 1 -r 100 $pdf ppm/test") == 0 or die "can't render test: $?"; |
| 29 |
|
my $test = 'ppm/test-000001.ppm'; |
| 30 |
|
open(my $fh, '<', $test) || die "can't open $test: $!"; |
| 31 |
|
my $res = <$fh>; |
| 32 |
|
$res = <$fh>; |
| 33 |
|
my ( $x_res, $y_res ) = split(/\s+/,$res); |
| 34 |
|
print "## 100 dpi resolution = $x_res*$y_res\n"; |
| 35 |
|
close($fh); |
| 36 |
|
|
| 37 |
|
$x_res *= ( $to_page - $from_page + 1 ); |
| 38 |
|
|
| 39 |
|
print "## total size = $x_res*$y_res\n"; |
| 40 |
|
|
| 41 |
|
# initial width = 2 tiles |
| 42 |
|
my $curr_w = 256 * 2; |
| 43 |
|
|
| 44 |
|
my $start_dpi = int( 100 / ( $x_res / $curr_w ) ); |
| 45 |
|
|
| 46 |
my $dpi = $zoom * 15; |
foreach my $zoom ( 1 .. 10 ) { |
| 47 |
|
|
| 48 |
my $ppm = sprintf("tmp-%03d", $dpi); |
my $dpi = $start_dpi * $zoom; |
|
my $tmp = "$ppm-000001.ppm"; |
|
| 49 |
|
|
| 50 |
print "rendering pdf $pdf in $dpi dpi to $tmp\n"; |
my $ppm = sprintf("ppm/%03d", $dpi); |
| 51 |
|
|
| 52 |
system "pdftoppm $limit -r $dpi -aa yes -aaVector yes $pdf $ppm"; |
print "rendering pdf $pdf pages $from_page-$to_page in $dpi dpi\n"; |
| 53 |
|
|
| 54 |
die "can't render" unless -f $tmp; |
my $cmd = "pdftoppm -f $from_page -l $to_page -r $dpi -aa yes -aaVector yes $pdf $ppm"; |
| 55 |
|
system($cmd) == 0 or die "can't start $cmd: $?"; |
| 56 |
|
|
| 57 |
my $img = Imager->new; |
my @page_imgs; |
|
$img->read(file=>$tmp) or die "Can't load $tmp: ", $img->errstr; |
|
| 58 |
|
|
| 59 |
my $x_size = $img->getwidth(); |
# size of all pages |
| 60 |
my $y_size = $img->getheight(); |
my ( $x_size, $y_size ) = (0,0); |
| 61 |
|
|
| 62 |
|
foreach my $page ( $from_page .. $to_page ) { |
| 63 |
|
|
| 64 |
|
my $tmp = sprintf("ppm/%03d-%06d.ppm", $dpi, $page); |
| 65 |
|
die "can't find page $tmp" unless -f $tmp; |
| 66 |
|
|
| 67 |
|
my $p_img = Imager->new; |
| 68 |
|
$p_img->read(file=>$tmp) or die "Can't load $tmp: ", $p_img->errstr; |
| 69 |
|
|
| 70 |
|
$x_size += $p_img->getwidth(); |
| 71 |
|
my $h = $p_img->getheight(); |
| 72 |
|
$y_size = $h if $h > $y_size; |
| 73 |
|
|
| 74 |
|
push @page_imgs, $p_img; |
| 75 |
|
} |
| 76 |
|
|
| 77 |
print "loaded $tmp $x_size*$y_size pixels\n"; |
print "loaded $from_page-$to_page of $x_size*$y_size pixels\n"; |
| 78 |
|
|
| 79 |
|
my $back_color = Imager::Color->new(255, 127, 127); |
| 80 |
|
|
| 81 |
|
sub pad { |
| 82 |
|
my $s = shift; |
| 83 |
|
return 256 - ( $s % 256); |
| 84 |
|
} |
| 85 |
|
|
| 86 |
|
my ( $full_x, $full_y ) = ( $x_size + pad( $x_size ), $y_size + pad( $y_size ) ); |
| 87 |
|
|
| 88 |
|
my $img = Imager->new( xsize => $full_x, ysize => $full_y ); |
| 89 |
|
$img->box(filled=>1, color=>$back_color); |
| 90 |
|
|
| 91 |
|
my $x_pos = int( pad( $x_size ) / 2 ); |
| 92 |
|
my $y_pos = int( pad( $y_size ) / 2 ); |
| 93 |
|
|
| 94 |
|
foreach my $page_img ( @page_imgs ) { |
| 95 |
|
$img->paste( left => $x_pos, top => $y_pos, img => $page_img ); |
| 96 |
|
$x_pos += $page_img->getwidth(); |
| 97 |
|
} |
| 98 |
|
|
| 99 |
|
undef @page_imgs; |
| 100 |
|
|
| 101 |
|
$img->write( file => sprintf("zoom-%03d.jpg", $dpi ) ) if $debug; |
| 102 |
|
|
| 103 |
my $tiles_x = int( $x_size / 256 ); |
my $tiles_x = int( $x_size / 256 ); |
| 104 |
my $tiles_y = int( $y_size / 256 ); |
my $tiles_y = int( $y_size / 256 ); |
| 105 |
|
|
| 106 |
print "creating in $tiles_x*$tiles_y tiles\n"; |
print "creating in $tiles_x*$tiles_y tiles from $full_x*$full_y\n"; |
| 107 |
|
|
| 108 |
for my $y ( 0 .. $tiles_y ) { |
for my $y ( 0 .. $tiles_y ) { |
| 109 |
for my $x ( 0 .. $tiles_x ) { |
for my $x ( 0 .. $tiles_x ) { |
| 110 |
|
|
| 111 |
my $size = { |
my $size = { |
| 112 |
left => $x * 256, |
left => $x * 256, |
| 113 |
bottom => $y_size - $y * 256, |
bottom => $full_y - $y * 256, |
| 114 |
width => $x == $tiles_x ? $x_size % 256 : 256, |
width => 256, |
| 115 |
height => $y == $tiles_y ? $y_size % 256 : 256, |
height => 256, |
| 116 |
}; |
}; |
| 117 |
|
|
| 118 |
my $tile = $img->crop( %$size ) or die "can't crop $x*$y ",dump( $size ); |
my $tile = $img->crop( %$size ) or die "can't crop $x*$y ",dump( $size ); |
| 119 |
|
|
|
if ( ( $x == $tiles_x ) || ( $y == $tiles_y ) ) { |
|
|
warn "## expand tile to full size\n"; |
|
|
my $t2 = Imager->new(xsize => 256, ysize => 256); |
|
|
$t2->paste( |
|
|
top => 256 - $size->{height}, |
|
|
left => 0, |
|
|
src => $tile, |
|
|
); |
|
|
$tile = $t2; |
|
|
} |
|
|
|
|
| 120 |
# emulate TileCache disk layout |
# emulate TileCache disk layout |
| 121 |
my $path = sprintf("%s/%02d/%03d/%03d/%03d/%03d/%03d/%03d.png", |
my $path = sprintf("%s/%02d/%03d/%03d/%03d/%03d/%03d/%03d.png", |
| 122 |
$tiles_path, |
$tiles_path, |
| 137 |
|
|
| 138 |
undef $tile; |
undef $tile; |
| 139 |
|
|
| 140 |
print "# $x*$y -> $path\n"; |
printf("# %2d*%-2d -> %s\n", $x, $y, $path); |
| 141 |
|
|
| 142 |
} |
} |
| 143 |
} |
} |
| 144 |
|
|
| 145 |
|
# break if zoom level over 300dpi |
| 146 |
|
last if $dpi > 300; |
| 147 |
} |
} |
| 148 |
|
|
| 149 |
|
|
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