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lowzoomtilesGen.pl
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#!/usr/bin/perl
use lib '.';
use LWP::Simple;
use LWP::UserAgent;
use Math::Trig;
use File::Copy;
use Digest::MD5 qw(md5_hex);
use File::Temp qw(tempfile);
use FindBin qw($Bin);
use tahconfig;
use tahlib;
use English '-no_match_vars';
use GD qw(:DEFAULT :cmp);
use strict;
use POSIX qw(locale_h);
#-----------------------------------------------------------------------------
# OpenStreetMap tiles@home
#
# Contact OJW on the Openstreetmap wiki for help using this program
#-----------------------------------------------------------------------------
# Copyright 2006, Oliver White, Etienne Cherdlu, Dirk-Lueder Kreie,
# Sebastian Spaeth and others
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#----------------- ------------------------------------------------------------
# Read the config file
my %Config = ReadConfig(
"freemapdiskclient.conf", "general.conf",
"authentication.conf", "layers.conf",
"freemapdisk.conf"
);
$Config{"LowZoom"} = 1 unless defined( $Config{"LowZoom"} );
# detect the current system locale: comma (,) => SK, dot (.) => EN
my ($decimalSep) = @{localeconv()}{"mon_decimal_point"};
printf STDERR "-- Running as PID: %d\n", $PID;
my %EnvironmentInfo = CheckConfig(%Config);
# Get version number from version-control system, as integer
my $Version = '$Revision: 5175 $';
my $VerifyHash;
$Version =~ s/\$Revision:\s*(\d+)\s*\$/$1/;
printf STDERR "This is version %d (%s) of tilesgen running on %s\n", $Version,
$Config{ClientVersion}, $^O;
# check GD
eval GD::Image->trueColor(1);
if ( $@ ne '' ) {
print STDERR "please update your libgd to version 2 for TrueColor support";
exit(3);
}
# Setup GD options
# currently unused (GD 2 truecolor mode)
#
# my $numcolors = 256; # 256 is maximum for paletted output and should be used
# my $dither = 0; # dithering on or off.
#
# dithering off should try to find a good palette, looks ugly on
# neighboring tiles with different map features as the "optimal"
# palette is chosen differently for different tiles.
# create a comparison blank image
my $EmptyLandImage = new GD::Image( 256, 256 );
my $MapLandBackground = $EmptyLandImage->colorAllocate( 248, 248, 248 );
$EmptyLandImage->fill( 127, 127, $MapLandBackground );
my $EmptySeaImage = new GD::Image( 256, 256 );
my $MapSeaBackground = $EmptySeaImage->colorAllocate( 181, 214, 241 );
$EmptySeaImage->fill( 127, 127, $MapSeaBackground );
# Some broken versions of Inkscape occasionally produce totally black
# output. We detect this case and throw an error when that happens.
my $BlackTileImage = new GD::Image( 256, 256 );
my $BlackTileBackground = $BlackTileImage->colorAllocate( 0, 0, 0 );
$BlackTileImage->fill( 127, 127, $BlackTileBackground );
# set the progress indicator variables
my $currentSubTask;
my $progress = 0;
my $progressJobs = 0;
my $progressPercent = 0;
# Check the on disk image tiles havn't been corrupted
if ( -s "emptyland.png" != 67 ) {
print STDERR
"Corruption detected in emptyland.png. Trying to redownload from svn automatically.\n";
statusMessage( "Downloading: emptyland.png",
$Config{Verbose}, $currentSubTask, $progressJobs, $progressPercent, 0 );
DownloadFile(
"http://svn.openstreetmap.org/applications/rendering/tilesAtHome/emptyland.png"
, # TODO: should be svn update, instead of http get...
"emptyland.png",
0
); ## 0=delete old file from disk first
}
if ( -s "emptysea.png" != 69 ) {
print STDERR
"Corruption detected in emptysea.png. Trying to redownload from svn automatically.\n";
statusMessage( "Downloading: emptysea.png",
$Config{Verbose}, $currentSubTask, $progressJobs, $progressPercent, 0 );
DownloadFile(
"http://svn.openstreetmap.org/applications/rendering/tilesAtHome/emptysea.png"
, # TODO: should be svn update, instead of http get...
"emptysea.png",
0
); ## 0=delete old file from disk first
}
# Check the on disk image tiles are now in order
if ( -s "emptyland.png" != 67
or -s "emptysea.png" != 69 )
{
print STDERR "\nAutomatic fix failed. Exiting.\n";
cleanUpAndDie( "init.emptytile_template_check", "EXIT", 4, $PID );
}
# Setup map projection
my $LimitY = ProjectF(85.0511);
my $LimitY2 = ProjectF(-85.0511);
my $RangeY = $LimitY - $LimitY2;
# Create the working directory if necessary
mkdir $Config{WorkingDirectory} if ( !-d $Config{WorkingDirectory} );
# keep track of time running
my $progstart = time();
my $dirent;
# keep track of the server time for current job
my $JobTime;
# Handle the command-line
my $Mode = shift();
my $ConfigName;
if ( $Mode eq "config" ) {
my $ConfigName = shift();
if ( not defined $ConfigName ) {
die "Must specify config file name \n";
}
AppendConfig($ConfigName);
# precitam dalsi prikaz
$Mode = shift();
}
if ( $Mode eq "xy" ) {
# ----------------------------------
# "xy" as first argument means you want to specify a tileset to render
# ----------------------------------
my $X = shift();
my $Y = shift();
if ( not defined $X or not defined $Y ) {
die "Must specify tile coordinates\n";
}
my $Zoom = shift();
GenerateTileset( $X, $Y, $Zoom );
}
elsif ( $Mode eq "loop" ) {
# create PID file... loop until PID file exists
if ( open( FAILFILE, ">", "./$PID.pid" ) ) {
print FAILFILE $PID;
close FAILFILE;
}
# ----------------------------------
# Continuously process requests from server
# ----------------------------------
# if this is a re-exec, we want to capture some of our status
# information from the command line. this feature allows setting
# any numeric variable by specifying "variablename=value" on the
# command line after the keyword "reexec". Currently unsuitable
# for alphanumeric variables.
if ( shift() eq "reexec" ) {
while ( my $evalstr = shift() ) {
die unless $evalstr =~ /^[A-Za-z]+=\d+/;
eval( '$' . $evalstr );
}
}
# this is the actual processing loop
while ( -e "./$PID.pid" ) {
reExecIfRequired();
my ( $did_something, $message ) = ProcessRequestsFromServer();
uploadIfEnoughTiles();
if ( $did_something == 0 ) {
talkInSleep( $message, 300 );
}
else {
setIdle( 0, 0 );
}
}
print("endless loop terminated :)");
exit(1);
}
elsif ( $Mode eq "" ) {
# ----------------------------------
# Normal mode downloads request from server
# ----------------------------------
my ( $did_something, $message ) = ProcessRequestsFromServer();
talkInSleep( $message, 300 ) unless ($did_something);
}
else {
# ----------------------------------
# "help" as first argument tells how to use the program
# ----------------------------------
my $Bar = "-" x 78;
print "\n$Bar\nOpenStreetMap tiles\@home client\n$Bar\n";
print "Usage: \n";
print "Specific area:\n \"$0 xy [x] [y] [zoom]\"\n (x and y coordinates of a zoom-zoom tile in the slippy-map coordinate system)\n See [[Slippy Map Tilenames]] on wiki.openstreetmap.org for details\n";
print "Other modes:\n";
print " $0 loop - runs continuously\n";
print " $0 version - prints out version string and exits\n";
print "\nGNU General Public license, version 2 or later\n$Bar\n";
}
sub uploadIfEnoughTiles {
my $Count = 0;
# compile a list of the "Prefix" values of all configured layers,
# separated by |
my $allowedPrefixes = join( "|",
map( $Config{"Layer.$_.Prefix"}, split( /,/, $Config{"LowLayers"} ) ) );
opendir( my $dp, $Config{WorkingDirectory} ) || return;
while ( my $File = readdir($dp) ) {
$Count++ if ( $File =~ /($allowedPrefixes)_.*\.png/ );
}
closedir($dp);
if ( $Count < 1 ) {
# print "Not uploading yet, only $Count tiles\n";
}
else {
upload();
}
}
sub upload {
## Run upload directly because it uses same messaging as tilesGen.pl,
## no need to hide output at all.
my $UploadScript = "perl $Bin/lowzoomupload.pl $progressJobs";
if ( defined $ConfigName ) {
$UploadScript = "perl $Bin/lowzoomupload.pl config $ConfigName $progressJobs";
}
my $retval = system($UploadScript);
return $retval;
}
#-----------------------------------------------------------------------------
# Ask the server what tileset needs rendering next
#-----------------------------------------------------------------------------
sub ProcessRequestsFromServer {
my $LocalFilename = $Config{WorkingDirectory} . "request-" . $PID . ".txt";
if ( $Config{"LocalSlippymap"} ) {
print "Config option LocalSlippymap is set. Downloading requests\n";
print "from the server in this mode would take them from the tiles\@home\n";
print "queue and never upload the results. Program aborted.\n";
cleanUpAndDie( "ProcessRequestFromServer:LocalSlippymap set, exiting",
"EXIT", 1, $PID );
}
# ----------------------------------
# Download the request, and check it
# Note: to find out exactly what this server is telling you,
# add ?help to the end of the URL and view it in a browser.
# It will give you details of other help pages available,
# such as the list of fields that it's sending out in requests
# ----------------------------------
killafile($LocalFilename);
my $RequestUrlString =
$Config{DiSKRequestLowURL}
. "&Email="
. $Config{DiSKUsername}
. "&ClientVersion="
. $Config{DiSKAPIVersion}
. "&PasswordMD5="
. md5_hex( $Config{DiSKPassword} );
print ("using URL " . $RequestUrlString . "\n") if ( $Config{Debug} );
DownloadFile( $RequestUrlString, $LocalFilename, 0 );
if ( !-f $LocalFilename ) {
return ( 0, "Error reading request from server" );
}
# Read into memory
open( my $fp, "<", $LocalFilename ) || return;
my $Request = <$fp>;
chomp $Request;
close $fp;
# Parse the request
my ( $ValidFlag, $ClientVersion, $X, $Y, $Z, $ModuleName, $VerifyString, $StylesheetVersion) =
split( /\|/, $Request );
# Check what format the results were in
# If you get this message, please do check for a new version, rather than
# commenting-out the test - it means the field order has changed and this
# program no longer makes sense!
if ( $ClientVersion != $Config{DiSKAPIVersion} ) {
#print STDERR "\n";
#print STDERR "Server is speaking a different version of the protocol to us.\n";
#print STDERR "Check to see whether a new version of this program was released!\n";
#cleanUpAndDie("ProcessRequestFromServer:Request API version mismatch, exiting",
# "EXIT", 1, $PID );
return ( 0, "Server has some difficulties, waiting for a while" );
}
if ( $StylesheetVersion != $Config{StylesheetVersion} ) {
if ( $ValidFlag eq "OK" ) {
PutRequestBackToServer( $X, $Y, $Z, "OldStyleSheets" );
}
print STDERR "\n";
print STDERR "Server has a different version of stylesheets.\n";
print STDERR "You should update your client to render consistent map!\n";
cleanUpAndDie("ProcessRequestFromServer:Stylesheet version mismatch, exiting",
"EXIT", 1, $PID );
## No need to return, we exit the program at this point
}
# First field is always "OK" if the server has actually sent a request
if ( $ValidFlag eq "XX" ) {
return ( 0, "Server has no work for us ($ModuleName)" );
}
elsif ( $ValidFlag ne "OK" ) {
return ( 0, "Server dysfunctional ($ModuleName)" );
}
# Information text to say what's happening
statusMessage("Got work from the \"$ModuleName\" server module");
$VerifyHash = $VerifyString;
# DEBUG: print "$VerifyHash\n";
# Create the tileset requested
GenerateTileset( $X, $Y, $Z );
return ( 1, "" );
}
sub PutRequestBackToServer {
## TODO: will not be called in some libGD abort situations
my ( $X, $Y, $Z, $Cause ) = @_;
## do not do this if called in xy mode!
return if ( $Mode eq "xy" );
my $Prio = $Config{ReRequestPrio};
my $LocalFilename =
$Config{WorkingDirectory} . "requesting-" . $PID . ".txt";
killafile($LocalFilename) if ( !$Config{Debug} ); # maybe not necessary if DownloadFile is called correctly?
my $RequestUrlString =
$Config{DiSKReRequestURL} . "&TileX=" . $X . "&TileY=" . $Y . "&Zoom=" .$Z ."&Verify=&Message=" . $Cause;
statusMessage( "Putting Job " . $X . "," . $Y . "@" . $Z . " back to server",
$Config{Verbose}, $currentSubTask, $progressJobs, $progressPercent, 0 );
DownloadFile( $RequestUrlString, $LocalFilename, 0 );
if ( !-f $LocalFilename ) {
return ( 0, "Error reading response from server" );
}
# Read into memory
open( my $fp, "<", $LocalFilename ) || return;
my $Request = <$fp>;
chomp $Request;
close $fp;
## TODO: Check response for "OK" or "Duplicate Entry" (which would be OK, too)
killafile($LocalFilename) if ( !$Config{Debug} ); # don't leave old files laying around
}
#-----------------------------------------------------------------------------
# Render a tile (and all subtiles, down to a certain depth)
#-----------------------------------------------------------------------------
sub GenerateTileset {
my ( $X, $Y, $Zoom ) = @_;
my ( $N, $S ) = Project( $Y, $Zoom );
my ( $W, $E ) = ProjectL( $X, $Zoom );
printf "Source (%s,%s): Lat %1.3f,%1.3f, Long %1.3f,%1.3f\n",
$X, $Y, $N, $S, $W, $E
if ( $Config{"Debug"} );
$progress = 0;
$progressPercent = 0;
$progressJobs++;
$currentSubTask = "jobinit";
my $maxCoords = ( 2**$Zoom - 1 );
statusMessage(
sprintf(
"Doing tileset $X,$Y z%d (area around %f,%f) from Freemap TRAPI",
$Zoom,
( $N + $S ) / 2,
( $W + $E ) / 2
),
$Config{Verbose},
$currentSubTask,
$progressJobs,
$progressPercent,
1
);
if ( ( $X < 0 )
or ( $X > $maxCoords )
or ( $Y < 0 )
or ( $Y > $maxCoords ) )
{
#maybe do something else here
die("\n Coordinates out of bounds (0..$maxCoords)\n");
}
$currentSubTask = "Preproc";
# Adjust requested area to avoid boundary conditions
my $N1 = $N + ( $N - $S ) * $Config{BorderNLow};
my $S1 = $S - ( $N - $S ) * $Config{BorderSLow};
my $E1 = $E + ( $E - $W ) * $Config{BorderELow};
my $W1 = $W - ( $E - $W ) * $Config{BorderWLow};
# TODO: verify the current system cannot handle segments/ways crossing the
# 180/-180 deg meridian and implement proper handling of this case, until
# then use this workaround:
if ( $W1 <= -180 ) {
$W1 = -180; # api apparently can handle -180
}
if ( $E1 > 180 ) {
$E1 = 180;
}
$N = ProjectLat2Merc($N1);
$S = ProjectLat2Merc($S1);
$W = ProjectLon2Merc($W1);
$E = ProjectLon2Merc($E1);
my $bbox = sprintf( "%f,%f,%f,%f", $W1, $S1, $E1, $N1 );
#------------------------------------------------------
# Download data
#------------------------------------------------------
my $DataFile = $Config{WorkingDirectory} . "data-$PID.osm";
killafile($DataFile);
my $URLS;
$URLS = sprintf( "%s/map?bbox=%s&zoom=%d%s", $Config{DiSKDataLowURL}, $bbox, $Zoom, $Config{DiSKDataLowURLPostfix} );
printf( "%s\n", $URLS ) if ( $Config{Debug} );
# We only need the bounding box for ways (they will be downloaded completly,
# but need the extended bounding box for places (names from neighbouring tiles)
# $URLS = sprintf(
#"%s%s/way[natural=*][bbox=%s] %s%s/way[boundary=*][bbox=%s] %s%s/way[landuse=*][bbox=%s] %s%s/way[highway=motorway|motorway_link|trunk|primary|secondary|tertiary][bbox=%s] %s%s/way[waterway=river][bbox=%s] %s%s/way[railway=*][bbox=%s] %s%s/node[place=*][bbox=%s]",
# $Config{XAPIURL}, $Config{OSMVersion}, $bbox,
# $Config{XAPIURL}, $Config{OSMVersion}, $bbox,
# $Config{XAPIURL}, $Config{OSMVersion}, $bbox,
# $Config{XAPIURL}, $Config{OSMVersion}, $bbox,
# $Config{XAPIURL}, $Config{OSMVersion}, $bbox,
# $Config{XAPIURL}, $Config{OSMVersion}, $bbox,
# $Config{XAPIURL}, $Config{OSMVersion}, $bbox
# );
my @tempfiles;
push( @tempfiles, $DataFile );
my $filelist = [];
my $i = 0;
foreach my $URL ( split( / /, $URLS ) ) {
++$i;
my $partialFile;
$partialFile = $Config{WorkingDirectory} . "data-$PID-$i.osm";
push( @{$filelist}, $partialFile );
push( @tempfiles, $partialFile );
statusMessage( "Downloading: Map data to $partialFile",
$Config{Verbose}, $currentSubTask, $progressJobs, $progressPercent,
0 );
DownloadFile( $URL, $partialFile, 0 );
if ( -s $partialFile == 0 ) {
printf("No data here...\n");
# if loop was requested just return or else exit with an error.
# (to enable wrappers to better handle this situation
# i.e. tell the server the job hasn't been done yet)
PutRequestBackToServer( $X, $Y, $Zoom, "NoData" );
foreach my $file (@tempfiles) { killafile($file); }
return 0 if ( $Mode eq "loop" );
exit(1);
}
}
mergeOsmFiles( $DataFile, $filelist );
# Get the server time for the data so we can assign it to the generated image (for tracking from when a tile actually is)
$JobTime = [ stat $DataFile ]->[9];
# Check for correct UTF8 (else inkscape will run amok later)
# FIXME: This doesn't seem to catch all string errors that inkscape trips over.
statusMessage( "Checking for UTF-8 errors in $DataFile",
$Config{Verbose}, $currentSubTask, $progressJobs, $progressPercent, 0 );
open( OSMDATA, $DataFile )
|| die("could not open $DataFile for UTF-8 check");
my @toCheck = <OSMDATA>;
close(OSMDATA);
my $osmtagfound =0;
while ( my $osmline = shift @toCheck ) {
if ( utf8::is_utf8($osmline)) {
# this might require perl 5.8.1 or an explicit use statement
statusMessage(
"found incorrect UTF-8 chars in $DataFile, job $X $Y $Zoom",
$Config{Verbose},
$currentSubTask,
$progressJobs,
$progressPercent,
1
);
PutRequestBackToServer( $X, $Y, $Zoom, "BadUTF8" );
return 0 if ( $Mode eq "loop" );
exit(1);
}
if ($osmline =~ /\<\/osm\>/ ) {
$osmtagfound=1;
}
}
if ($osmtagfound ==0) {
PutRequestBackToServer( $X, $Y, $Zoom, "InvalidData" );
return 0 if ( $Mode eq "loop" );
exit(1);
}
#------------------------------------------------------
# Adjust OSM data
#------------------------------------------------------
my $AdjustCmd = sprintf("%s perl adjustosmdata.pl --in-file %s --out-file %s --actions addfmrel,joinmpmembers",
$Config{Niceness}, "$DataFile", "$DataFile");
statusMessage("Running OSM data adjustment", $Config{Verbose}, $currentSubTask, $progressJobs, $progressPercent, 0);
runCommand($AdjustCmd, $PID);
#------------------------------------------------------
# Handle all layers, one after the other
#------------------------------------------------------
foreach my $layer ( split( /,/, $Config{"LowLayers"} ) ) {
#reset progress for each layer
$progress = 0;
$progressPercent = 0;
$currentSubTask = $layer;
my $maxzoom = $Config{"Layer.$layer.MaxLowZoom"};
my $minzoom = $Config{"Layer.$layer.MinLowZoom"};
my $layerDataFile;
if ( $minzoom <= $Zoom ) {
# Faff around
for ( my $i = $Zoom ; $i <= $maxzoom ; $i++ ) {
killafile( $Config{WorkingDirectory} . "output-$PID-z$i.svg" );
}
my $Margin = " " x ( $Zoom - 8 );
#printf "%03d %s%d,%d: %1.2f - %1.2f, %1.2f - %1.2f\n", $Zoom, $Margin, $X, $Y, $S,$N, $W,$E;
#------------------------------------------------------
# Go through preprocessing steps for the current layer
#------------------------------------------------------
my @ppchain = ($PID);
# force the Mercator preprocessor
my $LayerPreprocessor = $Config{"LowLayer.$layer.Preprocessor"};
if (!($LayerPreprocessor =~ /\mercator/)) {
if ($LayerPreprocessor eq "") {
$LayerPreprocessor = "mercator";
} else {
$LayerPreprocessor .= ",mercator";
}
}
# config option may be empty, or a comma separated list of preprocessors
foreach my $preprocessor ( split /,/, $LayerPreprocessor ) {
my $inputFile = sprintf( "%sdata-%s.osm", $Config{WorkingDirectory}, join( "-", @ppchain ) );
push( @ppchain, $preprocessor );
my $outputFile = sprintf( "%sdata-%s.osm", $Config{WorkingDirectory}, join( "-", @ppchain ) );
if ( -f $outputFile ) {
# no action; files for this preprocessing step seem to have been created
# by another layer already!
}
elsif ( $preprocessor eq "close-areas" ) {
my $Cmd =
sprintf( "%s perl close-areas.pl $X $Y $Zoom < %s > %s",
$Config{Niceness}, "$inputFile", "$outputFile" );
statusMessage( "Running close-areas",
$Config{Verbose}, $currentSubTask, $progressJobs,
$progressPercent, 0 );
runCommand( $Cmd, $PID );
}
elsif ( $preprocessor eq "mercator" ) {
my $Cmd = sprintf( "%s perl mercatorize.pl -in-file %s -out-file %s -z $Zoom -x $X -y $Y -s 0",
$Config{Niceness}, "$inputFile", "$outputFile" );
statusMessage( "Running Mercatorization",
$Config{Verbose}, $currentSubTask, $progressJobs,
$progressPercent, 0 );
runCommand( $Cmd, $PID );
}
elsif ( $preprocessor eq "simplify" ) {
my $sfactor;
if ( $Zoom == 5 ) { $sfactor = 0.0439453125; }
if ( $Zoom == 6 ) { $sfactor = 0.02197265625; }
if ( $Zoom == 7 ) { $sfactor = 0.010986328125; }
if ( $Zoom == 8 ) { $sfactor = 0.0054931640625; }
if ( $Zoom == 9 ) { $sfactor = 0.00274658203125; }
if ( $Zoom == 10 ) { $sfactor = 0.001373291015625; }
if ( $Zoom == 11 ) { $sfactor = 0.0006866455078125; }
my $Cmd = sprintf("%s perl simplify.pl --osm-file=%s --out=%s --simplify=%f",
$Config{Niceness}, "$inputFile",
"$outputFile", $sfactor
);
statusMessage( "Running Simplification",
$Config{Verbose}, $currentSubTask, $progressJobs,
$progressPercent, 0 );
runCommand( $Cmd, $PID );
} elsif ( $preprocessor eq "relation" ) {
my $Cmd = sprintf("%s perl analyze_missing_relations.pl --url=low --osm-file=%s --out=%s",
$Config{Niceness}, "$inputFile",
"$outputFile"
);
statusMessage( "Running Analyze relations",
$Config{Verbose}, $currentSubTask, $progressJobs,
$progressPercent, 0 );
runCommand( $Cmd, $PID );
} elsif ( $preprocessor eq "simplifyNames" ) {
my $Cmd = sprintf( "%s SimplifyNames.exe -s %s -d %s",
$Config{Niceness}, "$inputFile", "$outputFile" );
statusMessage( "Running simplifyNames",
$Config{Verbose}, $currentSubTask, $progressJobs,
$progressPercent, 0 );
runCommand( $Cmd, $PID );
}
#elsif ($preprocessor eq "reduce")
#{
#my $Cmd = sprintf(
# "%s perl reduce.pl --osm-in=%s --osm-out=%s --layer=%s --zoom=%d",
# $Config{Niceness}, "$inputFile",
# "$outputFile", $layer , $Zoom
# );
# statusMessage(
# "Running Reduction", $Config{Verbose},
# $currentSubTask, $progressJobs,
# $progressPercent, 0
# );
# runCommand($Cmd, $PID);
#
#}
else {
die "Invalid preprocessing step '$preprocessor'";
}
push( @tempfiles, $outputFile );
}
#------------------------------------------------------
# Preprocessing finished, start rendering
#------------------------------------------------------
$layerDataFile = sprintf( "%sdata-%s.osm", $Config{WorkingDirectory}, join( "-", @ppchain ) );
# Add bounding box to osmarender
# then set the data source
# then transform it to SVG
# Create a new copy of rules file to allow background update
# don't need zoom or layer in name of file as we'll
# process one after the other
my $source =$Config{FeaturesPath} . $Config{"Layer.$layer.Rules.$Zoom"};
my $tmpFeaturesXml = $Config{WorkingDirectory} . "map-features-$PID.xml";
copy( $source, $tmpFeaturesXml )
or die "Cannot make copy of $source";
# Update the rules file with details of what to do (where to get data, what bounds to use)
#AddBounds( $tmpFeaturesXml, $W, $S, $E, $N );
print ("Delta Zoom: 0\n") if ( $Config{Debug} );
AddBounds2($tmpFeaturesXml, 0);
SetDataSource( $layerDataFile, $tmpFeaturesXml );
# Render the file
if (
xml2svg(
$tmpFeaturesXml,
"$Config{WorkingDirectory}output-$PID-z$Zoom.svg",
$layer, $Zoom
)
)
{
# Delete temporary rules file
killafile($tmpFeaturesXml) if ( !$Config{Debug} );
}
else {
# Delete temporary rules file
killafile($tmpFeaturesXml);
foreach my $file (@tempfiles) {
killafile($file) if ( !$Config{Debug} );
}
return 0;
}
# Find the size of the SVG file
my ( $ImgH, $ImgW, $Valid ) =
getSize("$Config{WorkingDirectory}output-$PID-z$Zoom.svg");
print "\nImage Dimension: $ImgH, $ImgW \n\n" if ( $Config{Debug} );
# Render it as loads of recursive tiles
my $empty = RenderTile($layer, $X, $Y, $Zoom, $Zoom, 0, 0, $ImgW, $ImgH, 0);
# Clean-up the SVG files
killafile("$Config{WorkingDirectory}output-$PID-z$Zoom.svg") if ( !$Config{Debug} );
}
}
foreach my $file (@tempfiles) {
killafile($file) if ( !$Config{Debug} );
}
return 1;
}
#-----------------------------------------------------------------------------
# Render a tile
# $X, $Y, $Zoom - which tile
# $N, $S, $W, $E - bounds of the tile
# $ImgX1,$ImgY1,$ImgX2,$ImgY2 - location of the tile in the SVG file
#-----------------------------------------------------------------------------
sub RenderTile {
my (
$layer, $X, $Y, $Zoom, $ZOrig,
$X1, $Y1, $X2, $Y2, $empty
) = @_;
return if ( $Zoom > $Config{"Layer.$layer.MaxZoom"} );
my $AAL = $Config{"AAL"};
if ( $Config{"Layer.$layer.AAL.$Zoom"} != 0 ) {
$AAL = $Config{"Layer.$layer.AAL.$Zoom"};
}
# no need to render subtiles if empty
return if ( $empty == 1 );
# Render it to PNG
printf "Tilestripe (%s,%s): X %1.1f,%1.1f, Y %1.1f,%1.1f\n",
$X, $Y, $X1, $X2, $Y1, $Y2
if ( $Config{"Debug"} );
my $Width =
( $AAL * 256 ) * ( 2**( $Zoom - $ZOrig ) ); # Pixel size of tiles
my $Height = $Width; # Pixel height of tile
# svg2png returns true if all tiles extracted were empty. this might break
# if a higher zoom tile would contain data that is not rendered at the
# current zoom level.
if (
svg2png(
$layer, $X, $Y, $Zoom, $ZOrig,
$X1, $Y1, $X2, $Y2, $Width, $Height
)
and !$Config{"Layer.$layer.RenderFullTileset"}
)
{
$empty = 1;
}
# Get progress percentage
if ( $empty == 1 ) {
# leap forward because this tile and all higher zoom tiles of it are "done" (empty).
for ( my $j = $Config{"Layer.$layer.MaxZoom"} ; $j >= $Zoom ; $j-- ) {
$progress += 2**( $Config{"Layer.$layer.MaxZoom"} - $j );
}
}
else {
$progress += 1;
}
if (($progressPercent = $progress * 100 / ($Zoom - $ZOrig + 1)) == 100) {
statusMessage( "Finished $X,$Y for layer $layer",
$Config{Verbose}, $currentSubTask, $progressJobs, $progressPercent,
1 );
}
else {
if ( $Config{Verbose} ) {
printf STDERR "Job No. %d %1.1f %% done.\n", $progressJobs,
$progressPercent;
} else {
statusMessage( "Working", $Config{Verbose}, $currentSubTask,
$progressJobs, $progressPercent, 0 );
}
}
return $empty;
}
#-----------------------------------------------------------------------------
# Project latitude in degrees to Y coordinates in mercator projection
#-----------------------------------------------------------------------------
sub ProjectF {
my $Lat = DegToRad( shift() );
my $Y = log( tan($Lat) + sec($Lat) );
return ($Y);
}
#-----------------------------------------------------------------------------
# Project Y to latitude bounds
#-----------------------------------------------------------------------------
sub Project {
my ( $Y, $Zoom ) = @_;
my $Unit = 1 / ( 2**$Zoom );
my $relY1 = $Y * $Unit;
my $relY2 = $relY1 + $Unit;
$relY1 = $LimitY - $RangeY * $relY1;
$relY2 = $LimitY - $RangeY * $relY2;
my $Lat1 = ProjectMercToLat($relY1);
my $Lat2 = ProjectMercToLat($relY2);
return ( ( $Lat1, $Lat2 ) );
}
#-----------------------------------------------------------------------------
# Convert Y units in mercator projection to latitudes in degrees
#-----------------------------------------------------------------------------
sub ProjectMercToLat($) {
my $MercY = shift();
return ( RadToDeg( atan( sinh($MercY) ) ) );
}
#-----------------------------------------------------------------------------
# Project X to longitude bounds
#-----------------------------------------------------------------------------
sub ProjectL {
my ( $X, $Zoom ) = @_;
my $Unit = 360 / ( 2**$Zoom );
my $Long1 = -180 + $X * $Unit;
return ( ( $Long1, $Long1 + $Unit ) );
}
#-----------------------------------------------------------------------------
# Angle unit-conversions
#-----------------------------------------------------------------------------
sub DegToRad($) { return pi * shift() / 180; }
sub RadToDeg($) { return 180 * shift() / pi; }
#-----------------------------------------------------------------------------
# MERCATOR PROJECTION (deg to merc)
#-----------------------------------------------------------------------------
#lon_map = lon * 20037508.34 / 180;
#lat_map = Math.log(Math.tan( (90 + lat) * PI / 360)) / (PI / 180);
#lat_map = lat_map * 20037508.34 / 180;
sub ProjectLat2Merc($) {
#my ($lat) = @_;
my $lat = shift();
return (
log( tan( ( 90.0 + $lat ) * pi / 360.0 ) ) /
( pi / 180.0 ) * 20037508.34 /
180.0 );
}
sub ProjectLon2Merc($) {
#my ($lon) = @_;
my $lon = shift();
return ( $lon * 20037508.34 / 180.0 );
}
#-----------------------------------------------------------------------------
# Gets latest copy of osmarender from repository
#-----------------------------------------------------------------------------
sub UpdateFreemapSlovakiaDiSK {
foreach my $File (
(
"freemap/map-features-z10.xml", "freemap/map-features-z11.xml",
"freemap/map-features-z12.xml", "freemap/map-features-z13.xml",
"freemap/map-features-z14.xml", "freemap/map-features-z15.xml",
"freemap/map-features-z16.xml", "freemap/map-features-z17.xml"
)
)
{
statusMessage( "Downloading: Osmarender ($File)",
$Config{Verbose}, $currentSubTask, $progressJobs, $progressPercent,
0 );
DownloadFile(
"http://freemap/freemap_disk/features/$File"
, # TODO: should be config option. TODO: should be SVN. TODO: should be called
$Config{FeaturesPath} . $File,
1
);
}
# TODO: should be config option.
# TODO: should be SVN.
# TODO: should be called at all
# TODO: should update other aspects of the client as well
}
#-----------------------------------------------------------------------------
# Transform an OSM file (using osmarender) into SVG
#-----------------------------------------------------------------------------
sub xml2svg {
my ( $MapFeatures, $SVG, $layer, $zoom ) = @_;
my $TSVG = "$SVG";
my $NoBezier = $Config{NoBezier} || $zoom <= 11;
my $Cmd;
if ( !$NoBezier ) {
$TSVG = "$SVG-temp.svg";
}
if ( $Config{UseOrp} == 1 ) {
#orp.pl -r rule.xml data.osm -outfile
$Cmd = sprintf( "%s perl orp/orp.pl -r %s -o %s ",
$Config{Niceness}, "$MapFeatures", $TSVG );
}
else {
$Cmd = sprintf( "%s %s tr %s %s > \"%s\"",
$Config{Niceness}, $Config{XmlStarlet}, "osmarender.xsl",
"$MapFeatures", $TSVG );
}
statusMessage( "Transforming zoom level $zoom",
$Config{Verbose}, $currentSubTask, $progressJobs, $progressPercent, 0 );
printf "\n >> $Cmd \n\n" if ( $Config{"Debug"} );
runCommand( $Cmd, $PID );
# look at temporary svg wether it really is a svg or just the