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
32 $| = 1; # flush buffers after every write
49 die "Usage: $0 <fg-root-dir> <work-dir> <error^2> dem-file(s)\n";
54 $fg_root = shift(@ARGV);
55 $work_dir = shift(@ARGV);
56 $error = shift(@ARGV);
59 while ( $dem_file = shift(@ARGV) ) {
60 print "Source file = $dem_file Error tolerance = $error\n";
63 die "I doubt you'll be happy with an error tolerance as " .
71 $subdir = "./work/Scenery/w120n030/w111n033";
72 print "WARNING: Hardcoding subdir = $subdir\n";
75 triangle_1() if ( $do_triangle_1 );
76 fixnode() if ( $do_fixnode );
77 splittris() if ( $do_splittris );
78 assemtris() if ( $do_assemtris );
79 triangle_2() if ( $do_triangle_2);
80 tri2obj() if ( $do_tri2obj );
81 strips() if ( $do_strips );
82 fixobj() if ( $do_fixobj );
83 install() if ( $do_install );
91 # fix command to work with windoze, replaces first "/" with "\\"
98 if ( $system =~ m/CYGWIN32/ ) {
106 # return the file name root (ending at last ".")
111 $pos = rindex($file, ".");
112 return substr($file, 0, $pos);
116 # 1. dem2node work_dir dem_file tolerance^2 (meters)
118 # - dem2node .. dem_file 160000
120 # splits dem file into 64 file.node's which contain the
121 # irregularly fitted vertices
124 $command = "Dem2node/dem2node $work_dir $dem_file $error";
125 $command = fix_command($command);
126 print "Running '$command'\n";
128 open(OUT, "$command |");
133 $subdir =~ s/^Dir = //;
141 # 2. triangle -q file (Takes file.node and produces file.1.node and
144 print "Subdirectory for this dem file is $subdir\n";
147 @FILES = `ls $subdir`;
148 foreach $file ( @FILES ) {
151 if ( ($file =~ m/\.node$/) && ($file !~ m/\.\d\.node$/) ) {
152 # special handling is needed if .poly file exists
154 $fileroot =~ s/\.node$//;
155 print "$subdir/$fileroot\n";
156 $command = "Triangle/triangle";
157 if ( -r "$subdir/$fileroot.poly" ) {
160 $command .= " -a$max_area -q10 $subdir/$file";
161 $command = fix_command($command);
162 print "Running '$command'\n";
163 open(OUT, "$command |");
169 # remove input file.node
170 if ( $remove_tmps ) {
171 unlink("$subdir/$file");
178 # 3. fixnode file.dem subdir
180 # Take the original .dem file (for interpolating Z values) and the
181 # subdirecotry containing all the file.1.node's and replace with
185 $command = "FixNode/fixnode $dem_file $subdir";
186 $command = fix_command($command);
187 print "Running '$command'\n";
188 open(OUT, "$command |") || die "cannot run command\n";
196 # 4.1 splittris file (.1.node) (.1.ele)
198 # Extract the corner, edge, and body vertices (in original
199 # geodetic coordinates) and normals (in cartesian coordinates) and
200 # save them in something very close to the .obj format as file.se,
201 # file.sw, file.nw, file.ne, file.north, file.south, file.east,
202 # file.west, and file.body. This way we can reconstruct the
203 # region using consistant edges and corners.
205 # Arbitration rules: If an opposite edge file already exists,
206 # don't create our matching edge. If a corner already exists,
207 # don't create ours. Basically, the early bird gets the worm and
208 # gets to define the edge verticies and normals. All the other
209 # adjacent tiles must use these.
212 @FILES = `ls $subdir`;
213 foreach $file ( @FILES ) {
215 if ( $file =~ m/\.1\.node$/ ) {
216 $file =~ s/\.node$//; # strip off the ".node"
218 $command = "SplitTris/splittris $subdir/$file";
219 $command = fix_command($command);
220 print "Running '$command'\n";
221 open(OUT, "$command |");
227 if ( $remove_tmps ) {
228 unlink("$subdir/$file.node");
229 unlink("$subdir/$file.node.orig");
230 unlink("$subdir/$file.ele");
237 # 4.2 read in the split of version of the tiles, reconstruct the tile
238 # using the proper shared corners and edges. Save as a node file
239 # so we can retriangulate.
242 @FILES = `ls $subdir`;
243 foreach $file ( @FILES ) {
245 if ( $file =~ m/\.1\.body$/ ) {
246 $file =~ s/\.1\.body$//; # strip off the ".body"
248 $command = "AssemTris/assemtris $subdir/$file";
249 $command = fix_command($command);
250 print "Running '$command'\n";
251 open(OUT, "$command |");
257 if ( $remove_tmps ) {
258 unlink("$subdir/$file.body");
264 # 4.3 Retriangulate reassembled files (without -q option) so no new
265 # nodes are generated.
268 @FILES = `ls $subdir`;
269 foreach $file ( @FILES ) {
272 if ( ($file =~ m/\.node$/) && ($file !~ m/\.\d\.node$/) ) {
274 $base =~ s/\.node$//;
275 print("Test for $subdir/$base.q\n");
277 $command = "Triangle/triangle";
279 if ( -r "$subdir/$base.q" ) {
280 # if triangle hangs, we can create a filebase.q for
281 # the file it hung on. Then, we test for that file
282 # here which causes the incremental algorithm to run
283 # (which shouldn't ever hang.)
287 if ( -r "$subdir/$base.poly" ) {
288 $command .= " -pc $subdir/$base";
290 $command .= " $subdir/$file";
293 $command = fix_command($command);
294 print "Running '$command'\n";
295 open(OUT, "$command |");
301 # remove input file.node
302 if ( $remove_tmps ) {
303 unlink("$subdir/$file");
310 # 5. tri2obj file (.1.node) (.1.ele)
312 # Take the file.1.node and file.1.ele and produce file.1.obj
314 # Extracts normals out of the shared edge/vertex files, and uses
315 # the precalcuated normals for these nodes instead of calculating
316 # new ones. By sharing normals as well as vertices, not only are
317 # the gaps between tiles eliminated, but the colors and lighting
318 # transition smoothly across tile boundaries.
321 @FILES = `ls $subdir`;
322 foreach $file ( @FILES ) {
324 if ( $file =~ m/\.1\.node$/ ) {
325 $file =~ s/\.node$//; # strip off the ".node"
327 $command = "Tri2obj/tri2obj $subdir/$file";
328 $command = fix_command($command);
329 print "Running '$command'\n";
330 open(OUT, "$command |");
336 if ( $remove_tmps ) {
337 unlink("$subdir/$file.node");
338 unlink("$subdir/$file.node.orig");
339 unlink("$subdir/$file.ele");
346 # 6. strip file.1.obj
348 # Strip the file.1.obj's. Note, strips doesn't handle the minimal
349 # case of striping a square correctly.
351 # 7. cp bands.d file.2.obj
353 # strips produces a file called "bands.d" ... copy this to file.2.obj
356 @FILES = `ls $subdir`;
357 foreach $file ( @FILES ) {
359 if ( $file =~ m/\.1\.obj$/ ) {
360 $command = "Stripe_w/strips $subdir/$file";
361 $command = fix_command($command);
362 print "Running '$command'\n";
364 open(OUT, "$command |");
370 # copy to destination file
372 $newfile =~ s/\.1\.obj$//;
373 print "Copying to $subdir/$newfile.2.obj\n";
374 # open(IN, "<bands.d");
375 open(IN, "<stripe.objf");
376 open(OUT, ">$subdir/$newfile.2.obj");
383 if ( $remove_tmps ) {
384 unlink("$subdir/$file");
393 # Sort file.2.obj by strip winding
396 @FILES = `ls $subdir`;
397 foreach $file ( @FILES ) {
399 if ( $file =~ m/\.2\.obj$/ ) {
401 $newfile =~ s/\.2\.obj$/.obj/;
403 $command = "FixObj/fixobj $subdir/$file $subdir/$newfile";
404 $command = fix_command($command);
405 print "Running '$command'\n";
406 open(OUT, "$command |");
412 if ( $remove_tmps ) {
413 unlink("$subdir/$file");
422 # rename, compress, and install scenery files
426 $tmp =~ s/$work_dir//;
427 # print "Temp dir = $tmp\n";
428 $install_dir = "$fg_root/$tmp";
429 print "Install dir = $install_dir\n";
430 system("mkdir -p $install_dir");
432 @FILES = `ls $subdir`;
433 foreach $file ( @FILES ) {
435 if ( $file =~ m/\d\d.obj$/ ) {
436 $new_file = file_root($file);
438 $command = "gzip -v --best < $subdir/$file > $install_dir/$new_file.gz";
439 # $command = fix_command($command);
440 print "Running '$command'\n";
441 open(OUT, "$command |");
447 if ( $remove_tmps ) {
448 unlink("$subdir/$file");
455 #---------------------------------------------------------------------------
457 # Revision 1.25 1998/07/22 21:46:09 curt
460 # Revision 1.24 1998/07/21 04:33:47 curt
461 # More tweaks for sub-area cutouts.
463 # Revision 1.23 1998/07/20 12:55:35 curt
464 # Several tweaks to start incorporating area cutouts into the pipeline.
466 # Revision 1.22 1998/07/08 14:49:13 curt
469 # Revision 1.21 1998/06/08 17:18:37 curt
470 # Mods to test new Stripe fixes from Wilbur Streett.
472 # Revision 1.20 1998/06/05 18:20:24 curt
473 # Added DemInfo to dump out "A" record DEM info.
474 # Modified process-dem.pl to work in a temp directory and compress/copy the
475 # result to the final destination.
477 # Revision 1.19 1998/05/27 02:25:26 curt
478 # Added a flag to the first run of "triangle" to impose a maximum triangle
479 # size. This forces really flat areas to be subdivided a certain amount
480 # anyways. This makes for slightly more interesting scenery.
482 # Revision 1.18 1998/05/20 20:55:40 curt
485 # Revision 1.17 1998/04/28 01:23:25 curt
486 # Added a work around so that we can get past the "triangle" program
487 # hanging, by aborting and rerunning with that tile marked to use the "-i"
490 # Revision 1.16 1998/04/18 03:57:53 curt
491 # Added zlib library support.
493 # Revision 1.15 1998/04/08 23:24:07 curt
494 # Adopted Gnu automake/autoconf system.
496 # Revision 1.14 1998/04/06 21:09:38 curt
497 # Additional win32 support.
498 # Fixed a bad bug in dem file parsing that was causing the output to be
499 # flipped about x = y.
501 # Revision 1.13 1998/03/19 02:52:52 curt
502 # Updated to reflect some minor tool reorganization and the creation of class
503 # to handle DEM processing needs.
505 # Revision 1.12 1998/03/19 01:48:35 curt
506 # Added gpc-2.01 (generic polygon clipping library)
508 # Revision 1.11 1998/03/03 03:36:57 curt
511 # Revision 1.10 1998/02/01 03:42:26 curt
512 # Modifications to handle compressed dem files.
514 # Revision 1.9 1998/01/27 18:36:54 curt
515 # Lots of updates to get back in sync with changes made over in .../Src/
517 # Revision 1.8 1998/01/21 17:59:05 curt
518 # Uncomment lines to remove several intermediate files.
520 # Revision 1.7 1998/01/19 19:51:06 curt
521 # A couple final pre-release tweaks.
523 # Revision 1.6 1998/01/15 21:33:33 curt
524 # Assembling triangles and building a new .node file with the proper shared
525 # vertices now works. Now we just have to use the shared normals and we'll
528 # Revision 1.5 1998/01/15 02:50:08 curt
529 # Tweaked to add next stage.
531 # Revision 1.4 1998/01/14 15:55:34 curt
532 # Finished splittris, started assemtris.
534 # Revision 1.3 1998/01/14 02:15:52 curt
535 # Updated front end script to keep plugging away on tile fitting.
537 # Revision 1.2 1998/01/12 20:42:08 curt
538 # Working on fitting tiles together in a seamless manner.
540 # Revision 1.1 1998/01/09 23:06:46 curt