3 #---------------------------------------------------------------------------
4 # Toplevel script to automate DEM file processing and conversion
6 # Written by Curtis Olson, started January 1998.
8 # Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
10 # This program is free software; you can redistribute it and/or modify
11 # it under the terms of the GNU General Public License as published by
12 # the Free Software Foundation; either version 2 of the License, or
13 # (at your option) any later version.
15 # This program is distributed in the hope that it will be useful,
16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 # GNU General Public License for more details.
20 # You should have received a copy of the GNU General Public License
21 # along with this program; if not, write to the Free Software
22 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 # (Log is kept at end of this file)
26 #---------------------------------------------------------------------------
29 $max_area = 10000; # maximum triangle area
31 $| = 1; # flush buffers after every write
48 die "Usage: $0 <fg-root-dir> <work-dir> <error^2> dem-file(s)\n";
53 $fg_root = shift(@ARGV);
54 $work_dir = shift(@ARGV);
55 $error = shift(@ARGV);
58 while ( $dem_file = shift(@ARGV) ) {
59 print "Source file = $dem_file Error tolerance = $error\n";
62 die "I doubt you'll be happy with an error tolerance as " .
70 $subdir = "./work/Scenery/w100n040/w093n045/";
71 print "WARNING: Hardcoding subdir = $subdir\n";
74 triangle_1() if ( $do_triangle_1 );
75 fixnode() if ( $do_fixnode );
76 splittris() if ( $do_splittris );
77 assemtris() if ( $do_assemtris );
78 triangle_2() if ( $do_triangle_2);
79 tri2obj() if ( $do_tri2obj );
80 strips() if ( $do_strips );
81 fixobj() if ( $do_fixobj );
82 install() if ( $do_install );
90 # fix command to work with windoze, replaces first "/" with "\\"
97 if ( $system =~ m/CYGWIN32/ ) {
105 # return the file name root (ending at last ".")
110 $pos = rindex($file, ".");
111 return substr($file, 0, $pos);
115 # 1. dem2node work_dir dem_file tolerance^2 (meters)
117 # - dem2node .. dem_file 160000
119 # splits dem file into 64 file.node's which contain the
120 # irregularly fitted vertices
123 $command = "Dem2node/dem2node $work_dir $dem_file $error";
124 $command = fix_command($command);
125 print "Running '$command'\n";
127 open(OUT, "$command |");
132 $subdir =~ s/^Dir = //;
140 # 2. triangle -q file (Takes file.node and produces file.1.node and
143 print "Subdirectory for this dem file is $subdir\n";
146 @FILES = `ls $subdir`;
147 foreach $file ( @FILES ) {
150 if ( ($file =~ m/\.node$/) && ($file !~ m/\.\d\.node$/) ) {
151 $command = "Triangle/triangle -a$max_area -q $subdir/$file";
152 $command = fix_command($command);
153 print "Running '$command'\n";
154 open(OUT, "$command |");
160 # remove input file.node
161 unlink("$subdir/$file");
167 # 3. fixnode file.dem subdir
169 # Take the original .dem file (for interpolating Z values) and the
170 # subdirecotry containing all the file.1.node's and replace with
174 $command = "FixNode/fixnode $dem_file $subdir";
175 $command = fix_command($command);
176 print "Running '$command'\n";
177 open(OUT, "$command |");
185 # 4.1 splittris file (.1.node) (.1.ele)
187 # Extract the corner, edge, and body vertices (in original
188 # geodetic coordinates) and normals (in cartesian coordinates) and
189 # save them in something very close to the .obj format as file.se,
190 # file.sw, file.nw, file.ne, file.north, file.south, file.east,
191 # file.west, and file.body. This way we can reconstruct the
192 # region using consistant edges and corners.
194 # Arbitration rules: If an opposite edge file already exists,
195 # don't create our matching edge. If a corner already exists,
196 # don't create ours. Basically, the early bird gets the worm and
197 # gets to define the edge verticies and normals. All the other
198 # adjacent tiles must use these.
201 @FILES = `ls $subdir`;
202 foreach $file ( @FILES ) {
204 if ( $file =~ m/\.1\.node$/ ) {
205 $file =~ s/\.node$//; # strip off the ".node"
207 $command = "SplitTris/splittris $subdir/$file";
208 $command = fix_command($command);
209 print "Running '$command'\n";
210 open(OUT, "$command |");
216 unlink("$subdir/$file.node");
217 unlink("$subdir/$file.node.orig");
218 unlink("$subdir/$file.ele");
224 # 4.2 read in the split of version of the tiles, reconstruct the tile
225 # using the proper shared corners and edges. Save as a node file
226 # so we can retriangulate.
229 @FILES = `ls $subdir`;
230 foreach $file ( @FILES ) {
232 if ( $file =~ m/\.1\.body$/ ) {
233 $file =~ s/\.body$//; # strip off the ".body"
235 $command = "AssemTris/assemtris $subdir/$file";
236 $command = fix_command($command);
237 print "Running '$command'\n";
238 open(OUT, "$command |");
244 unlink("$subdir/$file.body");
249 # 4.3 Retriangulate reassembled files (without -q option) so no new
250 # nodes are generated.
253 @FILES = `ls $subdir`;
254 foreach $file ( @FILES ) {
257 if ( ($file =~ m/\.node$/) && ($file !~ m/\.\d\.node$/) ) {
259 $base =~ s/\.node$//;
260 print("Test for $subdir/$base.q\n");
261 if ( -r "$subdir/$base.q" ) {
263 # if triangle hangs, we can create a filebase.q for
264 # the file it hung on. Then, we test for that file
265 # here which causes the incremental algorithm to run
266 # (which shouldn't ever hang.)
268 $command = "Triangle/triangle -i $subdir/$file";
270 $command = "Triangle/triangle $subdir/$file";
272 $command = fix_command($command);
273 print "Running '$command'\n";
274 open(OUT, "$command |");
280 # remove input file.node
281 unlink("$subdir/$file");
287 # 5. tri2obj file (.1.node) (.1.ele)
289 # Take the file.1.node and file.1.ele and produce file.1.obj
291 # Extracts normals out of the shared edge/vertex files, and uses
292 # the precalcuated normals for these nodes instead of calculating
293 # new ones. By sharing normals as well as vertices, not only are
294 # the gaps between tiles eliminated, but the colors and lighting
295 # transition smoothly across tile boundaries.
298 @FILES = `ls $subdir`;
299 foreach $file ( @FILES ) {
301 if ( $file =~ m/\.1\.node$/ ) {
302 $file =~ s/\.node$//; # strip off the ".node"
304 $command = "Tri2obj/tri2obj $subdir/$file";
305 $command = fix_command($command);
306 print "Running '$command'\n";
307 open(OUT, "$command |");
313 unlink("$subdir/$file.node");
314 unlink("$subdir/$file.node.orig");
315 unlink("$subdir/$file.ele");
321 # 6. strip file.1.obj
323 # Strip the file.1.obj's. Note, strips doesn't handle the minimal
324 # case of striping a square correctly.
326 # 7. cp bands.d file.2.obj
328 # strips produces a file called "bands.d" ... copy this to file.2.obj
331 @FILES = `ls $subdir`;
332 foreach $file ( @FILES ) {
334 if ( $file =~ m/\.1\.obj$/ ) {
335 $command = "Stripe_w/strips $subdir/$file";
336 $command = fix_command($command);
337 print "Running '$command'\n";
339 open(OUT, "$command |");
345 # copy to destination file
347 $newfile =~ s/\.1\.obj$//;
348 print "Copying to $subdir/$newfile.2.obj\n";
349 # open(IN, "<bands.d");
350 open(IN, "<stripe.objf");
351 open(OUT, ">$subdir/$newfile.2.obj");
358 unlink("$subdir/$file");
366 # Sort file.2.obj by strip winding
369 @FILES = `ls $subdir`;
370 foreach $file ( @FILES ) {
372 if ( $file =~ m/\.2\.obj$/ ) {
374 $newfile =~ s/\.2\.obj$/.obj/;
376 $command = "FixObj/fixobj $subdir/$file $subdir/$newfile";
377 $command = fix_command($command);
378 print "Running '$command'\n";
379 open(OUT, "$command |");
385 unlink("$subdir/$file");
393 # rename, compress, and install scenery files
397 $tmp =~ s/$work_dir//;
398 # print "Temp dir = $tmp\n";
399 $install_dir = "$fg_root/$tmp";
400 print "Install dir = $install_dir\n";
401 system("mkdir -p $install_dir");
403 @FILES = `ls $subdir`;
404 foreach $file ( @FILES ) {
406 if ( $file =~ m/\d\d.obj$/ ) {
407 $new_file = file_root($file);
409 $command = "gzip -v --best < $subdir/$file > $install_dir/$new_file.gz";
410 # $command = fix_command($command);
411 print "Running '$command'\n";
412 open(OUT, "$command |");
418 unlink("$subdir/$file");
424 #---------------------------------------------------------------------------
426 # Revision 1.22 1998/07/08 14:49:13 curt
429 # Revision 1.21 1998/06/08 17:18:37 curt
430 # Mods to test new Stripe fixes from Wilbur Streett.
432 # Revision 1.20 1998/06/05 18:20:24 curt
433 # Added DemInfo to dump out "A" record DEM info.
434 # Modified process-dem.pl to work in a temp directory and compress/copy the
435 # result to the final destination.
437 # Revision 1.19 1998/05/27 02:25:26 curt
438 # Added a flag to the first run of "triangle" to impose a maximum triangle
439 # size. This forces really flat areas to be subdivided a certain amount
440 # anyways. This makes for slightly more interesting scenery.
442 # Revision 1.18 1998/05/20 20:55:40 curt
445 # Revision 1.17 1998/04/28 01:23:25 curt
446 # Added a work around so that we can get past the "triangle" program
447 # hanging, by aborting and rerunning with that tile marked to use the "-i"
450 # Revision 1.16 1998/04/18 03:57:53 curt
451 # Added zlib library support.
453 # Revision 1.15 1998/04/08 23:24:07 curt
454 # Adopted Gnu automake/autoconf system.
456 # Revision 1.14 1998/04/06 21:09:38 curt
457 # Additional win32 support.
458 # Fixed a bad bug in dem file parsing that was causing the output to be
459 # flipped about x = y.
461 # Revision 1.13 1998/03/19 02:52:52 curt
462 # Updated to reflect some minor tool reorganization and the creation of class
463 # to handle DEM processing needs.
465 # Revision 1.12 1998/03/19 01:48:35 curt
466 # Added gpc-2.01 (generic polygon clipping library)
468 # Revision 1.11 1998/03/03 03:36:57 curt
471 # Revision 1.10 1998/02/01 03:42:26 curt
472 # Modifications to handle compressed dem files.
474 # Revision 1.9 1998/01/27 18:36:54 curt
475 # Lots of updates to get back in sync with changes made over in .../Src/
477 # Revision 1.8 1998/01/21 17:59:05 curt
478 # Uncomment lines to remove several intermediate files.
480 # Revision 1.7 1998/01/19 19:51:06 curt
481 # A couple final pre-release tweaks.
483 # Revision 1.6 1998/01/15 21:33:33 curt
484 # Assembling triangles and building a new .node file with the proper shared
485 # vertices now works. Now we just have to use the shared normals and we'll
488 # Revision 1.5 1998/01/15 02:50:08 curt
489 # Tweaked to add next stage.
491 # Revision 1.4 1998/01/14 15:55:34 curt
492 # Finished splittris, started assemtris.
494 # Revision 1.3 1998/01/14 02:15:52 curt
495 # Updated front end script to keep plugging away on tile fitting.
497 # Revision 1.2 1998/01/12 20:42:08 curt
498 # Working on fitting tiles together in a seamless manner.
500 # Revision 1.1 1998/01/09 23:06:46 curt