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218
Tools/process-dem.pl
Executable file
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Tools/process-dem.pl
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#!/usr/bin/perl
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#---------------------------------------------------------------------------
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# Toplevel script to automate DEM file processing and conversion
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#
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# Written by Curtis Olson, started January 1998.
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#
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# Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#
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# $Id$
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# (Log is kept at end of this file)
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#---------------------------------------------------------------------------
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$| = 1; # flush buffers after every write
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# return the file name root (ending at last ".")
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sub file_root {
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my($file) = @_;
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my($pos);
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$pos = rindex($file, ".");
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return substr($file, 0, $pos);
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}
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# set the FG_ROOT environment variable if it hasn't already been set.
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if ( $ENV{FG_ROOT} eq "" ) {
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# look for a file called fgtop as a place marker
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if ( -e "fgtop" ) {
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$ENV{FG_ROOT} = ".";
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} elsif ( -e "../fgtop" ) {
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$ENV{FG_ROOT} = "..";
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}
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}
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# 1. Start with file.dem
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$dem_file = shift(@ARGV);
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$error = shift(@ARGV);
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$error += 0.0;
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print "Source file = $dem_file Error tolerance = $error\n";
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if ( $error < 0.5 ) {
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die "I doubt you'll be happy with an error tolerance as low as $error.\n";
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}
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# 2. dem2node $FG_ROOT dem_file tolerance^2 (meters)
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#
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# - dem2node .. dem_file 160000
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#
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# splits dem file into 64 file.node's which contain the
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# irregularly fitted vertices
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$command = "./Dem2node/demfit $ENV{FG_ROOT} $dem_file $error";
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print "Running '$command'\n";
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open(OUT, "$command |");
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while ( <OUT> ) {
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print $_;
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if ( m/Scenery/ ) {
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$subdir = $_;
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$subdir =~ s/Dir = //;
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}
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}
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close(OUT);
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# 3. triangle -q file (Takes file.node and produces file.1.node and
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# file.1.ele)
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$subdir = "../Scenery/w120n030/w111n033";
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print "Subdirectory for this dem file is $subdir\n";
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@FILES = `ls $subdir`;
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foreach $file ( @FILES ) {
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print $file;
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chop($file);
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if ( ($file =~ m/\.node$/) && ($file !~ m/\.\d\.node$/) ) {
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$command = "./Triangle/triangle -q $subdir/$file";
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print "Running '$command'\n";
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open(OUT, "$command |");
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while ( <OUT> ) {
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print $_;
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}
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close(OUT);
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# remove input file.node
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unlink("$subdir/$file");
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}
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}
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# 4. fixnode file.dem subdir
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#
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# Take the original .dem file (for interpolating Z values) and the
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# subdirecotry containing all the file.1.node's and replace with
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# fixed file.1.node
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$command = "./FixNode/fixnode $dem_file $subdir";
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print "Running '$command'\n";
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open(OUT, "$command |");
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while ( <OUT> ) {
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print $_;
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}
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close(OUT);
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# 5. tri2obj file (.1.node)
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#
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# Take the file.1.node and file.1.ele and produce file.1.obj
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@FILES = `ls $subdir`;
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foreach $file ( @FILES ) {
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chop($file);
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if ( $file =~ m/\.1\.node$/ ) {
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$file =~ s/\.node$//; # strip off the ".node"
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$command = "./Tri2obj/tri2obj $subdir/$file";
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print "Running '$command'\n";
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open(OUT, "$command |");
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while ( <OUT> ) {
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print $_;
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}
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close(OUT);
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unlink("$subdir/$file.node");
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unlink("$subdir/$file.node.orig");
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unlink("$subdir/$file.ele");
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}
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}
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# 6. strip file.1.obj
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#
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# Strip the file.1.obj's
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#
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# 7. cp bands.d file.2.obj
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#
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# strips produces a file called "bands.d" ... copy this to file.2.obj
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@FILES = `ls $subdir`;
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foreach $file ( @FILES ) {
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chop($file);
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if ( $file =~ m/\.1\.obj$/ ) {
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$command = "./Stripe_u/strips $subdir/$file";
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print "Running '$command'\n";
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open(OUT, "$command |");
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while ( <OUT> ) {
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print $_;
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}
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close(OUT);
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# copy to destination file
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$newfile = $file;
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$newfile =~ s/\.1\.obj$//;
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print "Copying to $subdir/$newfile.2.obj\n";
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open(IN, "<bands.d");
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open(OUT, ">$subdir/$newfile.2.obj");
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while ( <IN> ) {
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print OUT $_;
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}
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close(IN);
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close(OUT);
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unlink("$subdir/$file");
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}
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}
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# 8. fixobj file-new
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#
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# Sort file.2.obj by strip winding
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@FILES = `ls $subdir`;
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foreach $file ( @FILES ) {
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chop($file);
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if ( $file =~ m/\.2\.obj$/ ) {
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$newfile = $file;
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$newfile =~ s/\.2\.obj$/.obj/;
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$command = "./FixObj/fixobj $subdir/$file $subdir/$newfile";
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print "Running '$command'\n";
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open(OUT, "$command |");
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while ( <OUT> ) {
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print $_;
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}
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close(OUT);
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unlink("$subdir/$file");
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}
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}
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#---------------------------------------------------------------------------
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# $Log$
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# Revision 1.1 1998/01/09 23:06:46 curt
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# Initial revision.
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#
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