source: git/NEWS @ 3e85309

debug-cidebug-ci-sanitisersfaster-cavernloglog-selectstereo-2025walls-datawalls-data-hanging-as-warningwarn-only-for-hanging-survey
Last change on this file since 3e85309 was 752a9f5, checked in by Olly Betts <olly@…>, 17 months ago

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1up to: 566f5b86e5669286ec48111f315a5d4735a95ddb
2
3Changes in 1.4.6 (2024-02-??):
4
5* aven,survexport: Enable export of surface legs for KML and JSON.  Currently
6  surface and underground legs aren't differentiated in these export formats
7  when both are enabled.
8
9* aven,survexport: Fix survey filtering when reading Compass PLT files.
10
11* Update build system to eliminate use of obsolete autotools macros.
12
13* cavern:
14
15  + Workaround bug in PROJ < 9.3.0 with projected coordinate systems with
16    northing/easting axis order (such as EPSG:3042) which results in the grid
17    convergence being wrong by about 90°.  Reported by Patrick Warren on the
18    mailing list.
19
20  + If *declination auto was used before *cs out we would incorrectly calculate
21    the grid convergence as 0.  We now handle this case correctly by
22    calculating lazily when we first read a compass reading, and report an
23    error if the output coordinate system hasn't been set by then.
24
25* aven: Fix OpenGL scaling on high DPI displays with wxWidgets 3.0. Reported by
26  Philip Balister.
27
28* manual: Improve NATO mils example.
29
30* INSTALL: Clean up text re -dev packages
31
32* INSTALL: Add a link to the instructions for building from git.  Reported by
33  Andrew Northall in https://github.com/ojwb/survex/pull/13
34
35* doc/TODO.htm: Update.
36
37* Fix compilation warnings from newer compiler versions.
38
39* img library:
40
41  + Improve Compass PLT support: Survey dates are now handled; LRUD data is now
42    translated to img_XSECT and img_XSECT_END; We now infer img_SFLAG_ENTRANCE
43    for stations where the "Distance From Entrance" field is present and zero.
44
45  + Fix bug handling timestamps before 1970.  In C signed integer division
46    rounds towards zero, which previously resulted in timestamps before 1970
47    getting rounded to the end of the day instead of the start when converting
48    them to a count of days so they'd be off by one day unless the time was
49    midnight.  This affected reading v3-v7 format 3d files with IMG_API_VERSION
50    set to 1 and writing v8 format 3d files with IMG_API_VERSION set to 0 (the
51    default).
52
53Changes in 1.4.5 (2023-06-29):
54
55* aven: Fix rendering of crosses when drawn as sprites.  Reported by echarlie.
56
57* (macOS version): aven: Fix crash in export dialog.  Fixes #133, reported by
58  rixyane.  Thanks to Wookey for testing.
59
60* manual: Expand docs on connecting to Compass data.
61
62* Minor translation updates.
63
64Changes in 1.4.4 (2023-02-03):
65
66* aven: Fix red line in clino background to be grey (this was introduced in
67  1.4.3 and was a debugging change accidentally left in).
68
69* aven: Accept weird .3d files from Therion which have empty components in
70  station names.  That's not really valid by Survex's definition of station
71  names, but it's not very helpful to reject such files, so just disable the
72  checks that were rejecting this.
73
74  The result is empty entries in the survey tree, but I don't see what we can
75  really do that's better than that.
76
77  Reported by Vasily Vl. Suhachev.
78
79* aven: Make it more obvious you can enter a custom scale by adding a "..."
80  entry to the scale combobox - selecting this clears the value and gives focus
81  to the combo box text entry. This control has always supported clicking to
82  enter a custom scale, but there wasn't really any indication that this was
83  possible before.  Partly addresses #132, reported by Eric C. Landgraf.
84
85* aven: Force export window to resize when the export format is changed as
86  different controls are shown depending on the export format.
87
88* aven: Right-align tilt spin control value in print/export dialog to match the
89  bearing spin control.
90
91* aven,survexport: Add ability to export as Survex 3d which is useful as you
92  can filter to a subset of surveys, filter out splays, convert from other
93  formats the img library can read, etc.  This feature is a bit rough and ready
94  currently but please report issues.
95
96* dump3d: Add --legs option which converts MOVE and LINE to a single LEG line
97  per leg with the from and to coordinates.  Tools which parse dump3d output
98  should find this easier to process as it avoids having to track a "current
99  position".
100
101* Update manual to have a complete list of quantities which *calibrate accepts.
102  Reported by echarlie
103
104* cavern.tst: Fix testsuite to work with SOURCE_DATE_EPOCH set.
105
106Changes in 1.4.3 (2022-05-17):
107
108* aven: Much improved support for HiDPI monitors on all platforms.
109
110* aven: When started without a file make sure the window has focus so menu
111  accelerators and shortcuts work without clicking on the window.
112
113* aven,survexport: DXF export now puts splays in a separate layer and uses a
114  dotted linetype for them.  Patch from echarlie, see #60.
115
116* Improved survexport man page to include command line options and a short
117  note about DXF export.  Patch from echarlie.
118
119* Minor translation updates.
120
121* (Unix version): aven: Fix handling of EGL-based wxGLCanvas (which wxGTK 3.1.5
122  has).  Fix a build failure and don't force X11 (as the EGL-based wxGLCanvas
123  works on Wayland).
124
125* (MacOS version): aven: Fix hang on startup without a file.  Fixes #120,
126  reported by Enrico Fratnik.
127
128* (Microsoft Windows version): Now using wxWidgets 3.1.6 (was 3.0.5).
129
130* img library: Support reproducible builds which create .3d files by not
131  embedding a timestamp if environment variable SOURCE_DATE_EPOCH is set.
132  Requested by Martin Budaj.
133
134Changes in 1.4.2 (2022-02-25):
135
136* aven: Fix to be compatible with FFmpeg 5.0.
137
138* Improve docs for *cs and *declination.
139
140* cavern: Fix "*declination auto" not to crash when built with PROJ < 8.1.0.
141  Bug introduced in 1.4.0.
142
143* cavern: For each `*declination auto` command cavern now reports an "info"
144  message showing the range of calculated declination values and the dates at
145  which the ends of the range were obtained, and also the grid convergence
146  (which doesn't vary with time).  Fixes #92, reported by Rob Eavis.
147
148* cavern: If any of the N-S, E-W or U-D ranges includes an anonymous station
149  then also report the range in that direction excluding anonymous stations.
150  Patch from Thomas Holder.
151
152* cavern: The error from a bad `*cs custom` command now highlights the quoted
153  string properly.
154
155* cavern: "FIX command with no coordinates - fixing at (0,0,0)" is now an
156  "info" rather than a "warning".  It's not really reporting a problem and the
157  ability to omit the coordinates is a deliberate feature.  It is useful for
158  the user to know where the "*fix" without coordinates is if they want to
159  change the survey to be in real coordinates, so an "info" diagnostic is a
160  good fit.  This also means aven will no longer stay on the log view after
161  processing a dataset which fixes without coordinates.
162
163* cavern: If "*fix" is used twice with no coordinates we no longer say
164  "FIX command with no coordinates - fixing at (0,0,0)" right before:
165
166  error: Already had FIX command with no coordinates for station "x"
167
168* cavern: Include errors in Compass .mak files now report the error in the line
169  where the included filename is actually specified.
170
171* cavern.tst: Add test coverage for warnings for *entrance and *export with
172  a station which doesn't exist otherwise.
173
174* aven/survexport: Change JSON export to be valid JSON.  This means the output
175  has changed incompatibly, but it wasn't valid JSON before which suggests
176  nobody was actually successfully using it. Fixes #128, reported by Pawczak.
177
178* aven.tst: Skip one testcase on macos as it seems to hang, at least when
179  running on the Continuous Integration system.
180
181* (Microsoft Windows version): The installer is now generated with a much
182  newer version of Innosetup.  Most notably, it now supports installing as a
183  non-admin user.  This also means Microsoft Windows Vista is now the minimum
184  supported version but 2000 and XP are both many years out of support anyway.
185
186* (Microsoft Windows version): The coordinate system database for PROJ is
187  now included so "*cs" now works (broken since 1.4.0).
188
189* Chinese translation updates from Qingqing Li.
190
191* Building from source now requires a compiler with support for C99.  C99
192  seems to be universally supported by compilers now so we don't expect this to
193  inconvenience anyone.
194
195Changes in 1.4.1 (2021-11-08):
196
197* This release should work with any PROJ version >= 6.2.0.
198
199* cavern.tst: Fix to actually run tests when building outside the source
200  tree.  Previously files for testcases weren't found, and tests were skipped
201  with a warning, which lead to 1.4.0 being released with two failing testcase.
202  Fix to find the files, and make not finding them an error.
203
204* cavern.tst: Fix testcases gpxexport and require_fail which were failing
205  in 1.4.0.
206
207* 3dformat.htm: Document that coordinate system can be ESRI:<number>.
208
209Changes in 1.4.0 (2021-11-06):
210
211* New release series to mark that Survex now uses the new PROJ API, and
212  requires PROJ >= 7.2.0.  Survex 1.2.x will continue to support PROJ < 8
213  (and won't support newer PROJ versions).  Fixes #102, reported by Bas
214  Couwenberg.
215
216  Due to these changes, PROJ will now convert directly between coordinate
217  systems where it knows how to, instead of always converting via WGS84.
218  This means conversions may now be more accurate in some cases, and you may
219  notice station coordinates changing - these should be for the better.
220
221  Also, the vertical datum is now taken into account automatically, and
222  terrain data now aligns much better vertically with surveys.  Fixes #56.
223
224* aven: Clicking and holding the left mouse button on the compass or clino,
225  then (while still holding) clicking the right button no longer causes a
226  wxWidgets assertion to fail.  Reported by echarlie.
227
228* img library: Rewrite certain proj strings when reading 3d files for
229  better compatibility with newer PROJ versions, where use of proj
230  strings is strongly discouraged.
231
232  `+init=epsg:` followed by a code number is rewritten to `EPSG:`.
233
234  `+init=esri:` followed by a code number is rewritten to `ESRI:`.
235
236  The proj strings which cavern used to put in 3d files for UTM zones and
237  S-MERC are rewritten to `EPSG:` follow by the appropriate code number.
238
239* Also install survex.lang for gtksourceview 4. Fixes #125, reported by Martin
240  Green.
241
242* Fix missing data style in interleaved example in manual.  Reported by
243  echarlie.
244
245* Use jw from docbook-utils instead of sgmltools-lite to process the manual.
246  The sgmltools-lite homepage says it's no longer being developed, and suggests
247  docbook-tools (which Debian packages as docbook-utils) as a replacement.
248
249* doc/HACKING.htm: Update Debian packages to install
250
251* doc/HACKING.htm: Update details of setting up mingw cross-build environment.
252
253* Add simple tests for GPX and KML export.
254
255* Expand cavern testcase csbad.
256
257* cavern.tst: Parse warning/error counts more robustly.  Previously we'd get
258  confused if the final line just contained an integer, e.g. if we end listing
259  stations not attached to a fixed point.
260
261Changes in 1.2.45 (2021-03-09):
262
263* Avoid undefined signed shifts in 3d file handling.  Survex itself is only
264  affected on big-endian platforms (so most Linux machine, Microsoft Windows,
265  and current Macs are all OK), but this also affects the img library on all
266  platforms when used in standalone mode as it is in other programs.  Fixes
267  #119, reported by Matěj Plch.
268
269* aven:
270
271  + When reading cavern output for the log window, we need special handling
272    for the case when a chunk of output ends mid-way through a UTF-8
273    sequence.  Previously we lost the first byte of the sequence in this
274    case (and would then show it as an invalid character), but now it is
275    handled correctly.  In practice, most of the cavern log output is ASCII so
276    it's quite possible nobody's ever actually hit this.
277
278* testsuite:
279
280  + Suppress reports of leaks on exit from the LeakSanitiser debugging tool.
281    We know we don't release all memory explicitly on exit since doing so would
282    mean extra work for no reason as the OS reclaims all memory when the
283    process exits.
284
285* Convert OLDNEWS encoding from ISO-8859-1 to UTF-8.
286
287Changes in 1.2.44 (2021-02-10):
288
289* aven:
290
291  + (Microsoft Windows version): Now using wxWidgets 3.0.5 (was 3.0.4).
292
293* cavern:
294
295  * Add support for quadrant bearings (e.g. N30E).  Patch from echarlie.
296
297  * Report error if angle units are specified for passage dimension.
298    Previously "*units left degrees" and similar were incorrectly quietly
299    accepted.  Spotted by echarlie.
300
301  * Fix *data with no parameters to keep the current style and reset any state
302    as documented.  Previously it actually instead ignored any survey data
303    until the next *data command with parameters.
304
305  * Fix minor memory leak in *data.  We leaked a single memory allocation on
306    "*data default" or an invalid *data command.
307
308  * Improve test coverage.
309
310* survexport:
311
312  * The check for whether a format supported --elevation, --plan, --bearing and
313    --tilt was inverted.  Reported by echarlie.
314
315  * Fix reporting of export errors on Microsoft Windows.  Reported by Matic Di
316    Batista.
317
318* img library: Fix img_open() when used in other programs.  Patch from Thomas
319  Holder.
320
321* configure: Add wx-config-gtk3 to WX_CONFIG search for Arch Linux.  Patch
322  from Thomas Holder.
323
324* Improve documentation of interleaved data.  Most notably, we now document
325  that a blank line breaks the current traverse.
326
327* Fix typo in manual ('cypolar' -> 'cylpolar').  Patch from Wookey, fixes #117.
328
329* Chinese translation updates from Qingqing Li.
330
331* Russian translation updates from Vasily Vl. Suhachev.
332
333* French translation updates from Jean-Marc and from Wassil Janssen.
334
335* Bulgarian translation updates from Wassil Janssen
336
337Changes in 1.2.43 (2020-02-28):
338
339* cavern: Update to use v13 of the IGRF model for calculating declinations.
340  This was issued in December 2019 and should give slightly more accurate
341  declinations for surveys made since 2010.
342
343* aven:
344
345  + Fix colouring of "not in loop" when colouring by error.  1.2.42 introduced
346    a bug where surveys not in a loop were coloured as if they had zero error.
347    Fixes #111, reported by Bruce Mutton.
348
349  + Fix handling of grid in export.  The grid was always getting enabled
350    (probably since 1.2.8) even for formats which don't support exporting with
351    a grid.  This resulted in the bounding box being set wrongly for some
352    formats such as SVG, as reported by Richard Knapp on the mailing list.
353
354  + When showing errors processing the survey data we'd previously crash if
355    cavern incorrectly reported an error as being in a column off the end of
356    the line - now we just ignore the error column in this case.
357
358  + Support colouring by survey style ("normal", "diving", "nosurvey", etc).
359
360Changes in 1.2.42 (2019-09-04):
361
362* aven:
363
364  + Allow colouring by horizontal or vertical error.
365
366  + (Unix version): Disable scaling for HiDPI displays with GTK3.  The OpenGL
367    code needs work before this will work usefully, so just disable for now
368    (which simulates how things are when using GTK2).
369
370  + (Unix version): Fix orientation of notebook tabs when build with wxWidgets
371    3.1 development versions.  We want horizontal tab orientation, but were
372    passing a weird flag combination which now results in vertical tab
373    orientation.
374
375* When exporting to a format where we support rotation in the horizontal
376  plane (such as SVG), the rotation was incorrectly applied to cross section
377  data (except for the default rotation of zero).  Fixes #108, reported by
378  Richard Knapp.
379
380* Add a section to the manual covering the command line tools, and what you
381  might still need to use them for.
382
383* Fix compiler warning when building from source with GCC 9.
384
385* Consistently refer to macOS not OS X - Apple have renamed it yet again.
386
387* (macOS version): Revert the workaround for the crash on macOS 10.14.  The
388  bug we were working around is fixed in git ready for wxWidgets 3.0.5 and
389  there's a backported fix in the homebrew wxmac 3.0.4-2 package, which is how
390  we now recommend people install on a Mac.  Closes #101, reported by floho.
391
392* (macOS version): Remove buildmacosx.sh script since installing from homebrew
393  is now the recommended approach.
394
395Changes in 1.2.41 (2019-07-10):
396
397* aven:
398
399  + (Microsoft Windows version): Fix error on startup in the pre-built version
400    of 1.2.39 and 1.2.40.  This is a recurrence of the same issue as affected
401    1.2.33 - this time I've patched out the unnecessary check in wxWidgets
402    which causes this problem so it shouldn't recur again.  Reported by
403    Brian Clipstone.
404
405  + (macOS version): Add work around for crash on macOS 10.14 (not fully tested
406    as I don't have access to a Mac).  Hopefully fixed #101, reported by floho.
407
408Changes in 1.2.40 (2019-07-04):
409
410* aven: Draw the measuring line ring with an even shape.  Previously the exact
411  shape of the ring varied slightly depending on the exact coordinates, which
412  could be visually distracting once you noticed it.
413
414* We were casting a function pointer with a bool return type to the same type
415  but with a void return type.  In practice this probably works fine on most
416  platforms, but it's undefined behaviour and also gives a compiler warning
417  with some compilers.
418
419* Fix bug introduce in 1.2.39 with where the "esri" data file for PROJ is
420  installed.
421
422Changes in 1.2.39 (2019-06-29):
423
424* Support versions 5.x and 6.x of the PROJ library we use for handling
425  conversions between coordinate systems.  Reported by Bas Couwenberg
426  in #102, by Richard Knapp in #103 and by Martin Sluka in email.
427
428* (Unix and Mac OS versions): When checking if something is a file or if it is
429  a directory, we no longer treat a symlink as being neither, but instead
430  return an answer based on what the symlink points to.
431
432* aven:
433
434  + Improve handling of hidden splay ends.  Previously, hidden splay ends still
435    served as "targets" for snapping the mouse pointer to, and still got
436    crosses when crosses were enabled.  We don't have a handy flag for "this is
437    the outer end of a splay" and computing that on demand isn't so easy to do,
438    so for now we use the "anonymous station" flag so at least these cases now
439    behave properly for splays to anonymous stations (which is likely to be
440    what people with huge numbers of splays from disto-x, etc are using).  This
441    does mean that anonymous stations on continuation passages will incorrectly
442    also be off when splays are hidden, but that seems an OK trade-off for now
443    and a definite improvement over the previous situation.  The snapping of
444    the mouse pointer was reported by Frank Tully in #105.
445
446  + Fix typo in export UI (CVS should be CSV).
447
448* Documentation:
449
450  + Add CSV to documented list of survexport output formats.
451
452  + Fix *declination syntax synopsis - "auto" is a literal string, not a
453    placeholder.
454
455  + Update PROJ project name and website - the name is now "PROJ" (all caps and
456    no ".4" suffix) and the website is now: https://proj.org/
457
458* Install gtksourceview-3.0 language file so .svx files now get syntax
459  highlighting in gedit and other GtkSourceView-based editors.  Patch
460  from Philip Withnall.  Fixes #98.
461
462* (Microsoft Windows version): The Survex installer doesn't uninstall the old
463  version when you upgrade, but just overwrites it with the new version.  In
464  1.2.35 cad3d.exe was replaced with survexport.exe, but a user upgrading from
465  an older version would still have cad3d.exe from that old version.  We now
466  remove any old cad3d.exe left over from a previous install in the same
467  location to avoid confusion.
468
469* Add a few more message translations.
470
471* Fix warnings when built with a C++11 compiler.
472
473Changes in 1.2.38 (2019-03-02):
474
475* cavern:
476
477  + Deprecate MILS as angular units.  Survex has long support MILS as an alias
478    for GRADS.  However, this seems to be a bogus definition of a "mil" which
479    is unique to Survex (except that Therion has since copied it) - there are
480    several different definitions of a "mil" but they vary from 6000 to 6400 in
481    a full circle, not 400.  Reported by Andy Edwards.
482
483  + Fix segfault for *include "".  This isn't useful, but shouldn't crash.  It
484    now reports "file not found" instead.
485
486  + Use isnan() to check for not-a-number.  This is cleaner, more robust and
487    more efficient than formatting the number as a string and checking for
488    "NaN" or "nan" in the result.
489
490* Avoid unused variable warning when compiling from source with modern ffmpeg.
491
492* Drop support for wxWidgets < 3.0.  3.0.0 was released over 5 years ago and
493  should be easily available everywhere by now.  I'm no longer easily able to
494  test with wxWidgets 2.8, and this allows a significant amount of cruft to be
495  removed.
496
497* (Linux version): survex.spec: Fedora have removed gcc from the default build
498  environment so need to explicitly list it in the BuildRequires tag.  See
499  https://fedoraproject.org/wiki/Changes/Remove_GCC_from_BuildRoot for more
500  information.  Patch from James Begley.
501
502Changes in 1.2.37 (2018-11-18):
503
504* aven:
505
506  + Add basic "Colour by Survey" feature.  The colours used aren't currently
507    controllable.
508
509  + Fix export of splays.  Patch from Thomas Holder.
510
511  + Fix KML export to avoid invalid geometry when a tube intersects itself.
512    Patch from Robert Jones.
513
514  + (Unix version): Fix to work under Wayland by forcing the x11 GDK backend
515    for now.  This is a workaround until wxWidgets OpenGL support is updated
516    to work under Wayland.  Reported by Philip Balister.
517
518  + Fix warnings about using deprecated functions when building movie export
519    code using FFmpeg 4.0.
520
521* cavern:
522
523  + Compass MAK files: Handle fixed point coordinates in feet - previously the
524    units were ignored and the coordinates assumed to be in metres.
525
526  + Previously the first byte in a MAK file was ignored.  Typically MAK files
527    start with a comment, and since cavern currently ignores lines that start
528    with characters it doesn't understand the meaning of, this bug would often
529    go unnoticed.
530
531* survexport:
532
533  + Fix exporting of passages, walls and cross-sections by running the code
534    aven uses to decide how much to rotate each cross-section.  Previously all
535    cross-sections were aligned West-East.  Reported by Robert Jones.
536
537  + Default to .pos output if the program name is 3dtopos, and install a second
538    copy (or hardlink under Unix) as 3dtopos.  This provides compatibility with
539    current releases of Tunnel.  Reported by Becka Lawson, Wookey and
540    Stephen Crabtree.
541
542* Fix some German translations.  Patch from Thomas Holder.
543
544* (MacOS X version): Fix aven-create-app to not delete converted icons.
545  Typo spotted by Robert Jones.
546
547* Improve documentation for *team.  Document the requirement to quote names
548  unless a person is identified by just one name.  Document that the roles are
549  optional, as that information may not have been recorded, and to align with
550  therion's team command.
551
552Changes in 1.2.36 (2018-07-18):
553
554* aven:
555
556  + Add support for exporting as a CSV (Comma-Separated Values) file.
557
558  + Support exporting KML with altitude mode "clamp to ground".  In this mode,
559    the altitude in the data is ignored and it's rendered on the surface of the
560    terrain.  This is useful if your KML viewer renders the terrain as opaque
561    so underground data isn't visible.  Rendering cave passages on the surface
562    isn't great, but is better than not being able to see them at all.  This
563    option may also be helpful if you want to see where to look on the surface
564    for new entrances.
565
566  + Highlight surveys with a white loop as the mouse is moved over them in
567    the survey tree.  This is akin to how we highlight a station with a
568    white ring, and allows restoring "double-click survey in tree to zoom"
569    which temporarily required a quadruple-click in 1.2.35.
570
571  + Only show checkboxes in the survey tree for surveys not stations.
572
573  + Fix wxWidgets assertion if the user tried to select additional surveys
574    to show via the right-click menu.
575
576  + Fix multiple survey filtering when both a parent and child survey are
577    selected.  In this case it makes most sense to show all child surveys of
578    the parent, but we actually showed a slightly arbitrary subset of the
579    child surveys of the parent.
580
581  + The checkbox area in the survey tree is now included in the area which
582    is considered by mouse-over updates such as highlighting the station or
583    survey.
584
585  + Fix display of double quotes in cavern log window (they were being replaced
586    with control character 0x16 due to a typo in the code).
587
588  + Add shortcuts to buttons in cavern log window.
589
590  + Eliminate use of gluErrorString() function which eliminates some
591    deprecation warnings when building on macOS.
592
593  + Reject multiple --survey command line options for now (only the last has
594    been used for a long time, but now we actually support multiple survey
595    filtering this matters more).
596
597* survexport:
598
599  + Report a useful error when trying to convert a .3d file without coordinate
600    system information to GPS.  Reported by Mark Shinwell.
601
602  + Handle multiple redundant --survey command line options correctly.
603
604* dump3d: Report station flag "WALL", which was added in 1.2.7.
605
606* Minor translation updates.
607
608* Update manual for Microsoft Windows changes.
609
610* tests/: Add test coverage for warnings about suspect readings
611
612* Fix warning when compiling with clang.
613
614Changes in 1.2.35 (2018-07-03):
615
616* aven:
617
618  + Viewing can now be restricted to multiple surveys.  Use the right-button
619    menu on a survey in the survey tree and select "Show" to enable checkboxes
620    for that survey and all its siblings.  Only the selected surveys are shown
621    on screen, printed and exported.
622
623  + Don't open a survey when its name is double clicked.  This was happening
624    due to code added to "allow double-clicking to work on wxMSW >= 2.8.11".
625    However, reverting that change still seems to allow double-clicking to work
626    on both wxMSW and wxGTK, but fixes the unwanted additional opening of the
627    survey.
628
629  + Pick initial survey scaling based on whichever of the window width or
630    height gives the smaller scale.  Previously we always used the window
631    width, which can result in parts of the cave being outside the initial
632    view.  Reported by Wookey.
633
634  + Drop ability to specify a PROJ string in the export dialog.  This was added
635    to allow exporting to formats such as GPX before we added support for
636    specifying the projection in .svx files, and that support is now mature.
637
638  + DXF export now uses 2 decimal places (was 6) for the bounding box, for
639    consistency with the precision used for coordinates.
640
641  + Fix handling of surface flag during export.  In formats which discriminate,
642    legs could previously have got assigned the wrong status.
643
644  + Fix bug which probably prevented aven starting when OpenGL double buffering
645    is unavailable.  This is unlikely to affect any common configurations.
646
647  + (Microsoft Windows version): Fix loading of 3d files with non-ASCII
648    filenames.  Issue reported by Matic.
649
650  + (Microsoft Windows version): Fix incorrect display of some toolbar icons.
651    Probably broken since 1.2.17.
652
653* survexport: New command-line export program which uses aven's export code.
654  Replaces 3dtopos, cad3d and findentrances, since it can do all that these
655  tools could do, plus much more.
656
657* Merge more Spanish i18n updates from Evaristo Quiroga.
658
659* Minor updates to various other translations.
660
661* img library:
662
663  + Now supports reading from and writing to an existing FILE*.
664
665  + Improve API documentation.
666
667* (Microsoft Windows version): Fix packaging to include wxWidgets translation
668  files like it was supposed to, which fixes a few missing translations.  This
669  was probably broken by changes in 1.2.8.  Reported by Evaristo Quiroga.
670
671* (Microsoft Windows version): Drop two options from explorer bindings.
672  "Convert to DXF" and "Convert for hand plotting" have both been supported via
673  aven for a while, and that's a more useful way to access them as you can
674  control what gets exported.
675
676Changes in 1.2.34 (2018-03-24):
677
678* aven:
679
680  + (Microsoft Windows version): Fix error on startup in the pre-built version
681    of 1.2.33.
682
683  + (Microsoft Windows version): Now using wxWidgets 3.0.4 (was 3.0.2).
684
685Changes in 1.2.33 (2018-03-22):
686
687* aven:
688
689  + Reliably disable scale bar in perspective view.  This is supposed to happen
690    (because the scale across the screen varies in perspective view) but
691    actually the scale bar stayed around until an update was forced for another
692    reason.  Spotted thanks to Pedro Silva Pinto.
693
694  + Make "no date"/"not in loop" colour grey.  The white was a bit bright and
695    made it harder to see the legs that had colours.  The grey now used is
696    within the brightness range of the other colours.  Fixes #94, reported by
697    Erin Lynch.
698
699  + Fix KML export - exporting both survey legs and station names resulted in a
700    malformed KML file.  This bug was introduced in 1.2.30 when support for
701    exporting passages and walls was added.  Reported by Erin Lynch in #90.
702
703  + Consistently use 2 decimal places for altitude in KML output.  Some places
704    used 8 decimal places which is appropriate for lat and long, but clearly
705    overkill for an altitude in metres and increases the file size
706    unnecessarily.
707
708  + Right-align bearing widget in print/export dialog.  The change to allow the
709    value to wrap round from 360 to 0 in 1.2.27 inadvertently made this control
710    left-aligned (due to incorrect wxWidgets documentation of the default style
711    for this control).
712
713  + (Unix version): Work around wxWidgets bug so that custom cursors work
714    under GTK3.
715
716  + (Unix version): Update GTK version reporting - report GTK3, and don't
717    bother to report subversions of GTK2 (it seems to be fairly arbitrary
718    which subversions wxWidgets defines constants for).
719
720  + Update code to work without warnings when using wxWidgets 3.1.0 (the
721    current development version).
722
723  + Make movie export code compatible with upcoming FFmpeg 3.5 release.
724    It should still work with the older versions that worked before this
725    change.  Reported by James Cowgill in https://bugs.debian.org/888334
726
727* cavern:
728
729  + Warn about 2 digit years.  We can't change the assumption that these are
730    19xx without risking breaking existing datasets, but the further we get
731    into this century, the more likely such an assumption is to catch someone
732    out.  The warning can easily be quashed by explicitly adding the assumed
733    "19".
734
735* The Spanish translation is now up to date once more, thanks to updates from
736  Evaristo Quiroga.
737
738* Merge French translation updates from Jean-Marc.
739
740* Fix transposed German Northing and Easting labels.  Fixes #95, reported by
741  milosch.
742
743* Fill in missing translations of "Easting", "Northing", "E" and "N" for
744  Bulgarian, Greek, Hungarian, Polish and Russian based on other existing
745  translated messages.
746
747* Align .pos file headings better with columns of coordinates below for
748  Indonesian and Polish.
749
750* Fix handling of the message string "error" before messages loaded.  If
751  there's an error loading messages, we need this message to report it.
752  Reported by Martin Sluka.
753
754* Fix a few compiler warnings.
755
756* img library: Fix extracting leaf survey name for survey title.  When there
757  are three or more levels of survey, we were taking everything after the first
758  dot rather than everything after the last dot.
759
760* Fix problems with testsuite on macOS:
761
762  + cavern.tst: Skip "ONELEG" testcase on case-insensitive filing systems
763    - this test isn't meaningful unless the filing system is case-sensitive,
764    but happens to fail if it isn't.
765
766  + cavern.tst: Workaround limitations of Apple's sed.
767
768  + aven.tst: Fix not to hang on macOS.
769
770  + smoke.tst: Remove aven testcases which duplicate those in aven.tst.
771
772* Clean up handling of support files in relocatable installs - this is now
773  detected at run time on macOS.
774
775* Split out macOS Aven.app creation into a make rule so it can be easily used
776  by the homebrew formula.
777
778* buildmacosx.sh:
779
780  + Fix when WX_CONFIG not specified - this was giving a confusing error like:
781    ./buildmacosx.sh: line 163: --cc: command not found
782
783  + Use wxWidgets 3.0.4.
784
785* Stop checking wx-config --ldflags as this option was removed in wxWidgets 2.6
786  and we currently require 2.8 or newer.
787
788Changes in 1.2.32 (2017-07-08):
789
790* aven:
791
792  + Make splays on printouts a darker shade of grey.  Reported by Erin Lynch
793    and Anthony Day.
794
795  + In export formats which include 3 dimensions (DXF, PLT, GPX, KML, JSON,
796    POS), the value in the Z dimension was negated.  Bug introduced by fixes
797    for export of rotated plans and tilted elevations in 1.2.27.  Reported by
798    Erin Lynch in #89.
799
800  + Ignore viewing angles for export formats which work in 3D.  When the
801    rotation and tilt controls are hidden in the export dialog we were still
802    using their values to transform the data, so if you set them with for one
803    export format which support them, then switched to an export format which
804    doesn't, you'd get bogus coordinates in the exported file.  Bug probably
805    introduced in 1.2.27 by fixes for exports of rotated plans and tilted
806    elevations.
807
808  + Fix exporting to skencil and Survex .pos formats.  When aven's export to
809    .pos was added in 1.2.19, the ordering didn't match up and since then .pos
810    export has produced skencil files and vice versa.
811
812  + Don't leave terrain on if loading terrain data fails.  Previously if you
813    clicked the terrain icon (or via the menu) with no terrain loaded, but no
814    terrain got loaded (e.g. because the survey data lacks an explicit
815    coordinate system, or because the file failed to load, or because you
816    cancelled the dialog) then the terrain icon/menu item was still changed to
817    "on".
818
819  + Disable texturing while drawing terrain.  Previously the terrain got a bit
820    darker when "Textured Walls" were enabled.
821
822  + Force a refresh when "Textured Walls" are enabled or disabled.  Previously
823    the display wouldn't update right away.
824
825* Manual:
826
827  + Document how to specify fixed point altitude in feet.
828
829  + Explain why *fix warns about unused fixed points
830
831* Building from source now requires a compiler with decent support for C++11.
832  If you're using GCC, then GCC 4.7 should suffice.  This should not be an
833  onerous requirement - e.g. Debian wheezy and Ubuntu trusty both have a recent
834  enough GCC.  If special options are needed, these should get probed for and
835  automatically.  Fixes building 1.2.31 with GCC < 6, reported by Wookey.
836
837Changes in 1.2.31 (2017-07-01):
838
839* aven:
840
841  + Use superscript 'g' symbol instead of word 'grads' in status bar.  This
842    conserves the limited space available, and we already do this in the
843    compass and clino indicators so it's more consistent too.
844
845  + Show one decimal place on measure line bearing.  Pointed out by Benedikt
846    Hallinger on the therion list, though I'm sure this has been asked for
847    before by others.
848
849  + Show gradient of the measuring line when both ends are stations.
850
851  + Allow selection of text in cavern log window.  Selection was disabled in
852    1.2.28 because it seemed you couldn't actually copy selected text to the
853    clipboard, but retesting this now actually works fine for me, both with
854    current git master with the change reverted, and with code just before the
855    original change.
856
857  + More robust parsing of cavern output (cleanly handle context highlighting
858    which extends beyond the end of the line).
859
860  + Allow showing duplicate legs as dashed lines or hiding them entirely,
861    with dashed now being the default.  Implemented by Patrick Warren.
862
863  + Also allow "Dashed" for splays and "Faded" for duplicate legs.
864
865  + Splay legs in surface data are also shown faded.
866
867  + Check environment variables VISUAL and EDITOR when looking for editor to
868    use when a warning or error is clicked on in the cavern log window.  The
869    specified editor may have a GUI or need to run in a terminal, so we have to
870    special-case each editor supported, and that means we can pass extra
871    options needed to position the cursor on the appropriate line/column.
872    Currently these editors are supported: gvim, nvim, vim, gedit, pluma,
873    emacs, nano, jed, kate.  Suggested by Wookey.
874
875  + Fix handling of non-square terrain data files - the X and Y dimensions were
876    swapped.  Reported by detrito.
877
878  + Improve parsing of DEM data with .hdr file.  Use documented defaults for
879    more values, and where we only support a subset of values (or a particular
880    value) check for unsupported values in more cases.
881
882  + When colouring by depth, fix colouring and texturing of polygons which
883    cross depth bands.  The previous problems were most obvious with high
884    chambers and long legs down deep pitches, especially in for surveys without
885    much vertical range.
886
887  + Support for drawing blobs using point sprites was added in 1.2.28,
888    but caching that this worked wasn't hooked up properly so the test to
889    see if this worked would happen at the start of each run.  This is now
890    cached as intended which should reduce start up time a little when blobs
891    are drawn in this way.
892
893  + Fix drawing of crosses with lines.  This is a fall-back case which is
894    rarely used as most OpenGL setups will handle a better method, but it was
895    resulting in crosses with a four-pixel square in the centre - now the
896    centre should be a single pixel.
897
898* cavern:
899
900  + Allow *data with no arguments to reset the current style - useful for
901    entering passage data where there are side passages.
902
903  + Fix hang processing file without newline at end.  This bug was introduced
904    by changes in 1.2.28.  Reported by Mark Brown.
905
906  + (Mac OS X and Microsoft Windows versions): Build with newer version of
907    PROJ library which fixes buggy handling of *fix with lat-long coordinates.
908    Also add a testcase to the testsuite to alert users building for themselves
909    with an affected PROJ version on any platform.  Reported by Ross Davidson.
910
911  + Fix cavern to handle Compass .DAT with no survey team.  Previously this
912    resulted in the bogus error: Expecting numeric field, found "FROM"
913    Reported by Erin Lynch.
914
915  + Handle UTF-8 "BOM" at start of .svx files.  Unicode doesn't recommend its
916    use, but Microsoft stuff seems to like to create files with it in, and the
917    error cavern currently reports for such files is very confusing, so it
918    seems best to just handle it.  Reported by Rob Eavis.
919
920  + Change a couple of messages to use double quotes for consistency with all
921    other messages.
922
923* extend:
924
925  + Now runs a bit faster.
926
927  + Splays are now carried over the extended survey.  The current handling
928    is simplistic, but should do a good enough job to be more useful than
929    discarding splays.  The splays at each station are all rotated together
930    based on the bearing between the stations either side of the current one
931    along the first path extended through that station.  This nicely handles
932    dead ends and the situation at the top or bottom of a pitch, and should
933    tend to pick an angle close to the passage orientation along a traverse.
934    It's weakest at junctions.  Feedback (especially examples which could
935    be handled better) most welcome.
936
937* French translation is now up to date again, thanks to Jean-Marc.
938
939* Remove erroneous menu shortcut markers from Polish translations.
940
941* Fill in some missing translations in several languages by using message
942  translations from therion.
943
944* Add note to *fix documentation to clarify the coordinate order with *cs
945  long-lat.  Issue raised by Ross Davidson.
946
947* Fix errors in documentation of *units: "DEG" should be "DEGS", and
948  "MINUTES" has been supported for ages but wasn't documented.  Reported by
949  Footleg.
950
951* Fix a few typos in the documentation.
952
953* Fix compilation warning with recent GCC.
954
955Changes in 1.2.30 (2016-10-03):
956
957* aven:
958
959  + (Microsoft Windows version): Fix crash when trying to print or export
960    (probably introduced in 1.2.28).  Reported by Brian Clipstone.
961
962  + Report error if terrain file contains no terrain data in area of survey.
963    Suggested by detrito.
964
965  + Errors when writing an export file were reported with the wrong filename
966    - the .3d file, not the filename we were trying to write to.
967
968  + Export to KML now supports exporting passages, walls and cross-sections.
969    Addresses the remainder of ticket #4.
970
971* Add man page for dump3d.
972
973Changes in 1.2.29 (2016-09-27):
974
975* aven:
976
977  + Fix SVG output with non-ASCII characters (the charset in the SVG file
978    is now set to UTF-8 not ISO-8859-1).
979
980  + (Microsoft Windows version): Fix error dialog on startup in pre-built
981    version.  Reported by Brian Clipstone.
982
983* Manual: Add link to TerrainData wiki page.  Omission highlighted by Erin
984  Lynch and "detrito".
985
986* Fix to build without FFmpeg/libav and with older versions, broken by changes
987  in 1.2.28.  Reported by James Begley.
988
989Changes in 1.2.28 (2016-09-24):
990
991* cavern:
992
993  + Show the contents of the line after error and warning messages while
994    processing survey data, and indicate the region of the line in many cases
995    in the same style that compilers such as GCC and clang use (using the
996    column number we already have, plus new width information).  Based on a
997    patch from Mateusz Golicz.
998
999  + Add column and width information for many more error and warning messages.
1000
1001  + Fix column for "Separator in survey name" warning.
1002
1003  + Improve warnings when using a backclino with range 0-180 degrees (reusing
1004    the same machinery we already have for a forward clino with range 0-180
1005    degrees).
1006
1007* aven:
1008
1009  + Include LRUD in printout/export of extended elevations, broken by
1010    improvements to export of tilted elevations in 1.2.27.  Reported by Anthony
1011    Day.
1012
1013  + Name <trk> tags in GPX output, so Garmin GPS units name the imported track
1014    usefully.  Reported by Anthony Day.
1015
1016  + Remember scale from previous print or export operation in the same run of
1017    aven.  Suggested by Stuart Bennett.
1018
1019  + Convert range indication below shown line to a highlight on that region
1020    of the line in cavern log window.
1021
1022  + Fix colouring of error/warning without column in cavern log window.
1023
1024  + Fix click on error/warning without column in cavern log window.
1025
1026  + Fix highlight of translations of "error" or "warning" containing non-ASCII
1027    characters.  This fix for this only works with a Unicode build of
1028    wxWidgets, but as of wxWidgets 3.0, all builds are Unicode, so this
1029    shouldn't be much of a problem as wxWidgets 2.x is close to obsolete now.
1030    Reported by Mateusz Golicz.
1031
1032  + Disable selection of text in cavern log window - you can't currently copy
1033    it to the clipboard, so until that's implemented it seems better to disable
1034    the ability to select it.  Reported by Wookey.
1035
1036  + Avoid special "1000" scale entry when exporting.
1037
1038  + Show 1 page when "One Page" selected.
1039
1040  + Reload processed data when restricting view.  Fixes failure when
1041    restricting view on data just processed via aven.  Spotted by Andrew
1042    Atkinson and myself.
1043
1044  + Don't hide blobs and crosses behind terrain.  Reported by Jenny Black.
1045
1046  + Fix rendering of crosses using point sprites.  The texture being used was
1047    misaligned relative to the image used for the visual fidelity check, so the
1048    check always failed and point sprites would never be used.  Where point
1049    sprites are supported, they're probably the fastest option - on my netbook
1050    this change improves FPS by ~6 fold when displaying crosses for a large
1051    survey.
1052
1053  + Support drawing blobs using point sprites.  About 5 times faster than using
1054    lines on my netbook.
1055
1056  + Recheck how best to draw crosses and blobs on the first run after Survex
1057    is upgraded (or downgraded) as the rendering code may have changed (we
1058    already recheck when the OpenGL hardware or driver changes).
1059
1060  + Change "MPEG" export to be MPEG4 (.mp4) rather than MPEG1 (.mpg).
1061    MPEG4 produces smaller output of higher quality, and should be widely
1062    supported these days.  And I can't get the MPEG1 output to work without
1063    buffer underflows, resulting in a file which doesn't play without
1064    glitches.
1065
1066  + Add OGG video to the list of formats - it's more compact than the others
1067    we currently list, though slower to write.
1068
1069  + Fix export to movie formats for which libav/FFmpeg needs to seek the file
1070    being written.  This was broken by changes in 1.2.27.
1071
1072  + Overhaul movie export for the current FFmpeg API, fixing deprecation
1073    warnings when building against a recent version.
1074
1075  + (Microsoft Windows version): Fix corrupted exported movie files.  1.2.27
1076    changed the movie export code to allow writing to files with non-ASCII
1077    characters in the names, but the new code failed to open the file in binary
1078    mode, leading to corrupt output.  Fixes #81, reported by Erin Lynch.
1079
1080  * (Microsoft Windows version): Pre-built version now uses FFmpeg 3.1.3 for
1081    movie export.
1082
1083  * (Mac OS X version): Pre-built version now uses FFmpeg 3.1.3 for movie
1084    export.
1085
1086* Fix to build without FFmpeg/libav, broken by changes in 1.2.27.  Reported by
1087  James Begley.
1088
1089* The Polish translation is now very close to being complete, thanks to a
1090  substantial update from Mateusz Golicz.
1091
1092* Merge catalan translation updates from Adolfo Jayme.
1093
1094* (Microsoft Windows version): Map LANG_CHINESE to zh_CN not zh so Chinese
1095  messages get used automatically.
1096
1097* cavern.tst: Remove random : from after ] - dash ignores the extra character,
1098  but it causes this test to fail if /bin/sh is a different shell (e.g. bash).
1099
1100* cavern.tst: Add expected output for more testcases.
1101
1102* Remove unwanted execute bit from some testcase data.
1103
1104* Use https for more URLs which support it.
1105
1106Changes in 1.2.27 (2016-06-06):
1107
1108* aven:
1109
1110  + Right click on a survey in the survey tree now gives a pop-up menu
1111    with "Hide others", which restricts the view to just that survey
1112    and any subsurveys.  Right click on the root of the survey tree
1113    gives a menu with "Show all" to undo any restriction in effect.
1114    (Currently these are implemented by reloading the file and using
1115    the same machinery as the --survey= command line option, but that will
1116    probably change in the future).
1117
1118  + If there's a sub-survey restriction (from the --survey= command line
1119    option or the new UI described above) it is now shown in brackets after
1120    the survey tree root.
1121
1122  + When reloading a survey, preserve the current view position (previously
1123    the view was recentred).
1124
1125  + When reloading a survey, actually preserve the current scale factor
1126    (this was meant to happen, but the adjustment was applied in the
1127    wrong direction).
1128
1129  + New "File->Extended Elevation..." menu item provides a way to generate
1130    extended elevations for simple cases without having to use the command
1131    line.  Suggested by Fleur Loveridge.
1132
1133  + Don't process key presses if accompanied by an unexpected modifier key.
1134    In particular, this means that aven no longer interferes with Alt+<function
1135    key> (which is typically handled by the desktop) and Alt+<letter> (which is
1136    typically a menu short cut).  Reported by Владимир Георгиев.
1137
1138  + Reduce file loading time by ~5%.  The station name compare function was
1139    something of a hot spot, and optimising it yielded a nice improvement.
1140
1141  + Allow splay legs to be disabled in when printing and exporting.  Mostly
1142    addresses #60.
1143
1144  + SVG export now shows splay legs thinner and in grey.  See #60.
1145
1146  + Fix export of rotated plans and tilted elevations - previously plans were
1147    always aligned with North up, and elevations which weren't exactly side on
1148    were exported as plans.  Reported by Stuart Bennett.
1149
1150  + Fix offset bounding box for exported elevations.
1151
1152  + In print/export dialog the bearing value now wraps if you scroll up past
1153    360 or down past 0.
1154
1155  + Fix greying out of LRUD-based controls in the print/export dialog when the
1156    view is tilted (i.e. not plan or elevation).  This stopped working in
1157    1.2.18 when the pan and tilt spin controls were changed from integer- to
1158    real-valued ones.
1159
1160  + Printouts now show LRUD as pale grey arrows from the station they are
1161    measured from.  Based on patch from Michael Sargent.  Closes #65.
1162
1163  + Take LRUD into account for printout size.  Fixes #72, reported by Erin
1164    Lynch.
1165
1166  + Update movie export code to work with latest version of FFmpeg.
1167
1168  + Make "Show Log" a toggle, so you can click on the button to take a look at
1169    the log, and a second click returns you to the survey view.
1170
1171  + (Microsoft Windows version): Open the font file in binary mode - it looks
1172    like we were lucky and the font file (or at least its current version)
1173    would have loaded OK in text mode despite being binary data.
1174
1175  + (Microsoft Windows version): Exporting to files with non-ASCII filenames
1176    should now work.
1177
1178* cavern:
1179
1180  + Allow tape or backtape to be omitted.  Reported by Erin Lynch.
1181
1182  + Grid convergence is now corrected for when using automatically
1183    calculated declinations (*declination auto <X> <Y> <Z>).  Requested
1184    by Mateusz Golicz on the mailing list.
1185
1186  + Clear any cached calculated declination upon another *declination auto
1187    with different coordinates.  Previously if the date stayed the same,
1188    a previously cached declination for the old coordinates was used.
1189
1190  + Fix check for end of version number array in *required.   We would check up
1191    to 12 version components, the last 9 being bogus.  In practice, *require is
1192    only likely to be used with up to three components, so this wouldn't be an
1193    issue.
1194
1195  + *begin with an invalid prefix could cause a crash in some cases.  Fixed
1196    by patch from Colin Watson.
1197
1198  + Report column locations for errors to do with readings.
1199
1200* Merge translation updates from Jean-Marc.
1201
1202* img library: Better document which members can be set when writing.
1203  Highlighted by email query about use of img API from Владимир Георгиев.
1204
1205* Document how *declination interacts with *calibrate declination if both are
1206  used in the same dataset.
1207
1208* doc/3dformat.htm: Update details of how changes to the current label buffer
1209  are encoded to reflect changes in v8.  Reported by Angus Sawyer.
1210
1211* Use docbook2man instead of docbook-to-man to generated Unix man pages
1212  from SGML source.  The latter seems to be no longer actively maintained, and
1213  docbook2man now does a similarly good job.
1214
1215* Use https for survex.com links, and for other sites which support it.
1216
1217Changes in 1.2.26 (2016-01-07):
1218
1219* aven:
1220
1221  + (Microsoft Windows version): Fix to be able to process .svx files with
1222    cavern again.
1223
1224* (Microsoft Windows version): Simplify upgrading process with innosetup
1225  installer - if Survex is already installed, we now just install to the same
1226  location and use the same start menu folder.
1227
1228* (Linux version): survex.spec: Update for filetype metadata change in 1.2.25.
1229  Fixes #79, reported by James Begley.
1230
1231* (Linux version): survex.spec: Fix to work with RPM 4.13.  Fixes #79, reported
1232  by James Begley.
1233
1234Changes in 1.2.25 (2016-01-05):
1235
1236* aven:
1237
1238  + Drop broken code which attempts to fix 2D pitches.  Fixes #73, reported by
1239    Erin Lynch.  #76 tracks the issue the removed code was trying (but failing)
1240    to address.
1241
1242  + When animating, don't try to update station info based on mouse movement
1243    over the survey tree.
1244
1245  + Further improve code to handle cavern subprocess in aven.
1246
1247  + Fix jump to error for filenames containing colons when the error location
1248    doesn't have a column number.  Bug noted by Jenny Black.
1249
1250  + If we encounter bad UTF-8 in cavern output, replace it with a red and white
1251    ? in a diamond (previously we gave up showing output at the first bad
1252    sequence).  This can happen if you process a .svx file which isn't UTF-8
1253    encoded.
1254
1255  + (Unix version): Don't try to set the terminal window title when opening an
1256    editor from the cavern log window - gnome-terminal no longer supports this,
1257    and there doesn't seem to be a portable option for specifying the title for
1258    terminals which do still support this.
1259
1260  + (Microsoft Windows version): Also quote for cmd.exe so that paths with
1261    spaces in work reliably.  Reported by Marco Cotto.
1262
1263* cavern:
1264
1265  + Improve error for mismatched fore/back-sight plumbs, reported by Andy
1266    Edwards (see #78).
1267
1268  + Fix to use correct sd for backcompass.  We were using zero instead, the
1269    most obvious effect of which was that the threshold for warning about
1270    differing COMPASS and BACKCOMPASS was about 71% of what it should have
1271    been, so we were warning in more cases than we should have been.
1272
1273  + Implement support for specifying a length on backsights - if you're using
1274    something like a disto-x, you'll get a distance reading for the backsight
1275    too.  Fixes #71, reported by Erin Lynch.
1276
1277  + Make line counting more robust to mixed line ends.  Noticed in example file
1278    from Pete Smart (see #69).
1279
1280* extend: New --show-breaks option which adds a leg flagged as surface survey
1281  between each points at which a loop has been broken.  Suggested by Jenny
1282  Black.
1283
1284* (Unix version): Update filetype metadata to work with modern desktops.
1285
1286* Fix incorrect reporting of errors reading and writing processed survey data.
1287  Since 1.2.8, the error strings corresponding to IMG_CANTOPENOUT,
1288  IMG_BADFORMAT and IMG_DIRECTORY have been mixed up (this doesn't affect
1289  external programs using the img library, only Survex).  Reported by Jenny
1290  Black.
1291
1292* Add missing options to extend man page and --help output.  Noted by Jenny
1293  Black.
1294
1295* Document Document Ctrl+cursor keys for rotating and tilting in aven man page.
1296
1297* Fix broken SGML markup in manual.
1298
1299* Fix typo in manual reported by Jenny Black.
1300
1301* Update vim syntax file for newer commands, etc.
1302
1303* Minor translation updates.  Thanks to Piotr Strębski and Jean-Marc.
1304
1305* Fix to compile with FFmpeg 2.9.  Reported by Andreas Cadhalpun in
1306  https://bugs.debian.org/803863
1307
1308* Stop maintaining ChangeLog files.  They make merging patches harder, and stop
1309  'git cherry-pick' from working as it should.  The git repo history should be
1310  sufficient for complying with GPLv2 2(a).
1311
1312* (Microsoft Windows version): The installer requires admin privileges on Vista
1313  and later and OS versions older than Vista are past end of life, so drop code
1314  which tries to set up the registry differently depending if we have admin
1315  privileges or not.
1316
1317Changes in 1.2.24 (2015-09-23):
1318
1319* aven:
1320
1321  + (Microsoft Windows version): Fix the cavern log window.  Reported by Brian
1322    Clipstone.
1323
1324  + (Microsoft Windows version): Add workaround to avoid breakage in Therion.
1325    Reported by Jenny Black.
1326
1327  + If wx was built with thread support, aven now runs cavern from a separate
1328    thread, which works much better under wxMSW (where we can't use select),
1329    and also seems a bit smoother on Linux.
1330
1331  + Fix handling of encoding of filenames when the operating system has no
1332    locale installed corresponding to the language selected for Survex's
1333    messages.
1334
1335  + Undo accidentally committed debugging code which was sending message to
1336    the terminal in 1.2.23.
1337
1338* (Linux version): configure now looks first for wx-config-3.0, which Fedora's
1339  wx3 packages have.  Reported by James Begley.
1340
1341* Indonesian translation fully up to date again.
1342
1343* Manual: Document anonymous stations, based on the text from NEWS.  Reported
1344  by Wookey.
1345
1346Changes in 1.2.23 (2015-09-06):
1347
1348* aven:
1349
1350  + Updating the cavern log window is now much smoother, especially on slower
1351    machines.
1352
1353  + Show "busy" mouse cursor while processing survey data.
1354
1355  + Fix an assertion if you try to start processing a survex file while one is
1356    already being processed.
1357
1358  + Processing a .svx file with an error now still adds it to the file history.
1359    Reported by Martin Green.
1360
1361  + Fix the orientation of the starting end of tubes.
1362
1363* cavern:
1364
1365  + New *ref command to allow specifying an external reference (e.g. where to
1366    find the original survey notes).
1367
1368  + Drop support for showing percentage progress in cavern.  It's confusing in
1369    a multiple-file dataset as it shows progress in the current file so jumps
1370    around.  It also slows down processing, and on a slow machine you'd don't
1371    want that, while on a fast machine processing isn't slow enough for the
1372    progress display to be useful.
1373
1374* French translation is now completely up to date, thanks to Michel Bovey.
1375
1376* Bundle proj's EPSG and ESRI code lists in the installers for MS Windows and
1377  OS X so that things like "*cs EPSG:29903" work.  Reported by Graham Mullan.
1378
1379* (Microsoft Windows version): Process survey data with aven rather than
1380  running cavern.
1381
1382* (Microsoft Windows version): Installer built with InnoSetup 5.5.6 (recent
1383  releases have been built with 5.5.3) to see if that solves Ray Duffy's
1384  reported issue with not having file associations for .svx files created.
1385
1386Changes in 1.2.22 (2015-08-17):
1387
1388* aven:
1389
1390  + Ensure that the window has a depth buffer.  Whether it does by default
1391    seems to vary depending on OS and maybe graphics card.  Fixes #55 (terrain
1392    is no longer visible through itself), and also the rendering of passage
1393    tubes.  Thanks to Martin Green for pointing me in the right direction for
1394    finding this fix.
1395
1396* cavern:
1397
1398  + Fix *declination with an angle to actually work.
1399
1400  + Fix assertion if we try to identify a hanging survey by an anonymous
1401    station.
1402
1403  + Improve errors for invalid survey names in *begin, *end, *equate and
1404    *export.
1405
1406Changes in 1.2.21 (2015-07-28):
1407
1408* aven:
1409
1410  + Fix exporting to KML and other text-based formats to always use "." for the
1411    decimal separator - previously "," would be used when the user's locale
1412    specified this for the decimal separator.  Reported by Jan Schorn.
1413
1414  + Implement exporting of survey legs in KML format.
1415
1416  + Put "paddle" placemarker icons on stations in exported KML files, using the
1417    same colour coding for entrances, fixed points and exported points as aven
1418    does.
1419
1420  + Remove the "Coordinate projection" field from the print dialog, as it isn't
1421    relevant there.  Reported by Wookey.
1422
1423  + Fix the initial scale for small caves (since 1.2.18 the initial scale has
1424    been too small).  Reported by Wookey.
1425
1426  + Don't rescale if the same file is reloaded, but adjust the volume diameter
1427    as appropriate.
1428
1429  + Use wxGetenv() to read the SURVEXEDITOR variable, so we can accept Unicode
1430    values on Windows.
1431
1432* cavern:
1433
1434  + Fix coordinate systems using latitude and longitude - PROJ.4 wants these in
1435    radians, but we were passing degrees, which would generally cause the
1436    conversion to the output coordinate system to fail.  Reported by Wookey.
1437
1438  + Fix *fix with standard deviations when *cs is in use, give an error for use
1439    of *fix with standard deviations before *cs.
1440
1441  + Add new *declination command with support for setting the declination
1442    automatically from the IGRF model based on the survey date.  Thanks to the
1443    Therion developers for the IGRF support code, which we're reusing.
1444    Fixes #54, reported by Wookey.
1445
1446  + Allow the units for the zero error to be specified, making it easier to
1447    specify calibration with a scale if you measure the zero error externally
1448    (rather than using the instrument itself).  Fixes #61, reported by Andrew
1449    Atkinson.
1450
1451  + Report the error from PROJ when coordinate conversion fails as part of the
1452    actual error rather than on a separate line.
1453
1454  + Fix use after free after *solve.  This only occurs if a leg between the two
1455    exact same stations appears right before and right after the *solve, which
1456    is unlikely in real data, but the testsuite has an instance of this.  This
1457    was introduced by the repeat leg averaging added in 1.2.17.
1458
1459  + Fix small memory leak when solving network.  This doesn't really matter
1460    when solving at the end of processing as cavern will exit after that, but
1461    if *solve is used we continue processing after solving.
1462
1463* Remove compatibility handling for specifying a country variant of a language
1464  in SURVEXLANG using "-" with a lower case country code (e.g. "en-us") - we
1465  changed to the standard "en_US" way back in 2001.  This code was mangling
1466  character sets with a "-" in, and is no longer useful.
1467
1468* Ignore any "@<something>" modifier in the language code.
1469
1470* Improve documentation of magnetic declination handling, and cover the new
1471  "*DECLINATION" command.
1472
1473* Document aven's command line options in the manual and its man page.
1474  Reported by Jenny Black.
1475
1476* Point to '*case' and '*truncate' from the 'SEE ALSO' sections of each other's
1477  documentation.
1478
1479* Remove references to SpeleoGen from the documentation - it hasn't been
1480  updated for many years, and can't read recent versions of the .3d format.
1481
1482* Strip documentation references to obsolete versions of MS Windows.
1483
1484* doc/HACKING.htm: Update list of debian packages to install to build from git.
1485
1486Changes in 1.2.20 (2015-06-26):
1487
1488* aven:
1489
1490  + When printing, use the top margin rather than the right margin to calculate
1491    the height of the printable area.  In practice, the two values seem to be
1492    the same or very similar by default.
1493
1494  + Avoid assertion if the about dialog image fails to load.  Reported by Phil
1495    Maynard.
1496
1497  + Optimise the size of the about dialog images.
1498
1499  + Add support for reading terrain data which isn't in a .zip file.
1500
1501  + Force a refresh after loading terrain data so that it gets displayed right
1502    away.
1503
1504  + Make checks for terrain data extensions in zip files case insensitive.
1505
1506  + If reading terrain data fails, always report an error and never try to
1507    display it.
1508
1509* cavern: Allow clino readings in diving style data, suggested by Andrew
1510  Atkinson.  Currently these readings are ignored, but a future version will
1511  check that they're consistent with the angle given by the depth gauge and
1512  tape, and perform suitable averaging.
1513
1514* Remove lingering traces of svxedit.
1515
1516* configure: Fix to allow compiling without libav/ffmpeg, as was possible
1517  before 1.2.19.
1518
1519* (Unix version): Install the filetype and aven application icons under
1520  /usr/share/icons/hicolor, which is where they're expected to be these days.
1521
1522* (Unix version): Add %f to Exec in survex-aven.desktop.
1523
1524* (Mac OS X version): Remove useless extra copy of about box images from OS X
1525  disk image.
1526
1527* (Mac OS X version): Only ship one copy of each of the translations.
1528
1529* (Mac OS X version): Reduce the size of the aven binary by disabling a load of
1530  libav features we don't use.
1531
1532* (Microsoft Windows version): Reduce the size of the aven binary by disabling
1533  a load of libav features we don't use.
1534
1535* (Microsoft Windows version): Update message files to fix a missing Chinese
1536  message in the installer.
1537
1538Changes in 1.2.19 (2015-06-18):
1539
1540* aven:
1541
1542  + Fix exporting to GPX, KML and HPGL, which all failed to write the header to
1543    the exported file in 1.2.18.
1544
1545  + Add exporting to Survex .pos format.
1546
1547  + If the measuring line isn't currently active, pressing "Escape" will now
1548    exit full screen mode.
1549
1550  + (Mac OS X version): Change the shortcut for full screen mode to be the
1551    standard Ctrl+Command+F (rather than Shift+Command+F which we have been
1552    using since 1.2.7).
1553
1554  + (Mac OS X version): When we centre the view on the station this can
1555    generate a mouse move event, so clear the variable which says we are
1556    dragging before we process a left click on a station.  This avoids random
1557    rotations of the survey when clicking on a station, reported in #47 by Hugh
1558    St. Lawrence.
1559
1560  + (Mac OS X version): Force use of a non-native toolbar to stop the toolbar
1561    icons from being rescaled and looking fuzzy.
1562
1563  + (Mac OS X version): Remove code added in 1.2.18 which tries to set stop the
1564    toolbar icons from being rescaled, but which requires an unreleased version
1565    of wxWidgets, had a typo in, and doesn't actually seem to work anyway.
1566
1567  + (Mac OS X version): Drop out of full screen mode if the mouse is mode to
1568    the top of the screen, since we can't seem to display the menu bar in this
1569    case like we do on other platforms.
1570
1571  + (Mac OS X version): Enable aven's movie export feature.
1572
1573  + (Mac OS X version): Enable wxDisplay when building wxWidgets to better
1574    support multi-monitor setups.
1575
1576  + (Mac OS X version): Silence warning visible when aven is run from a
1577    terminal about a missing CFBundleTypeRole.
1578
1579  + When reading terrain data from a .zip file, report an error if the .zip
1580    file is bad, or if it doesn't contain any terrain data we recognise.
1581
1582  + Tweak error message in terrain reading code to distinguish two failure
1583    cases.
1584
1585  + Add viewing angles and scale to footer, and shorten some of the other items
1586    to make room for this extra information.  (Fixes ticket #52, reported by
1587    Erin Lynch)
1588
1589  + If the footer is wider than the printout width, scale down the font used
1590    so that it exactly fits; if the footer is narrower, than space out the
1591    items in in so it uses the full width.
1592
1593  + If the saved size for aven's window exceeds the current display size
1594    (mostly likely because we're now plugged into a smaller monitor), then
1595    reduce the size of the window to fit the display.  If the saved size is <
1596    (480x320), increase it to at least that, as aven isn't usable in a smaller
1597    window.
1598
1599  + Remove crude bodge which tries to pick a nicer initial window size when
1600    using wxWidgets without wxDisplay on a multi-monitor setup - aven now opens
1601    with the same size window it had when it was closed, so the initial size is
1602    only relevant on the first ever run.
1603
1604* Assorted translation updates.  Notably Indonesian is at 100% again.
1605
1606* Stop trying to catch and report signals.  The only real reason to do it is so
1607  we can say "Bug in program detected! Please report this to the authors"
1608  before we exit, but when the program crashes that's pretty obvious.  In aven
1609  we try to pop up a message box for this message, which may fail due to
1610  whatever caused the signal, while with the command line tools there's no
1611  great benefit over just letting the shell report the signal.
1612
1613* Use pkg-config to probe for libav and proj, which sorts out the correct flags
1614  for building on OS X against a static install of libav.
1615
1616Changes in 1.2.18 (2015-06-03):
1617
1618* aven:
1619
1620  + Add support for reading terrain data (from a zip file containing either an
1621    SRTM .hgt file, or an ESRI .bil file and associated metadata files), and
1622    rendering it as a transparent surface.
1623
1624  + Remove actions from 'Orientation' and 'Rotation' menus which you wouldn't
1625    sanely want to perform from the menu.
1626
1627  + Create a "Colour by" submenu of the "View" menu to house the various
1628    colouring options.
1629
1630  + Add "Colour by Gradient" and "Colour by Length".
1631
1632  + Make the button to dismiss the "About" dialog "OK" rather than "Close",
1633    which seems more logical, and also allows the dialog to be closed by
1634    pressing "Escape".
1635
1636  + Destroy any existing clipping region before we write the page footer.
1637    Hopefully solves ticket #52, reported by Erin Lynch.
1638
1639  + Don't round bearing and tilt angles to integers when printing and
1640    exporting.
1641
1642  + Add passage export for EPS format.  (Partly addresses ticket #4)
1643
1644  + Add JSON export.  This should be regarded as experimental, and the format
1645    is quite likely to change.
1646
1647  + Pressing F6 now toggles the display of rendering stats, currently FPS
1648    (Frames Per Second) and the number of triangles in the terrain mesh.
1649
1650  + Add a menu item and toolbar button to show the cavern log window if the
1651    currently shown survey data was processed by aven.  Reported by Hugh St
1652    Lawrence in #47, and by Dave Clucas and others previously on the list.
1653
1654  + Add "Save Log" button to Aven's cavern log window.
1655
1656  + In cavern log window, highlight "error" markers in red and "warning"
1657    markers in orange.
1658
1659  + Rework code to read cavern's output.  In particular, we no longer mix
1660    buffered and non-buffered system calls.
1661
1662  + Aven's support for reading colours and font sizes for printouts from
1663    print.ini has never worked - the contents of the ini files are ignored due
1664    to a bug which has been there since the code was added in 2005 - but nobody
1665    has ever complained.  So just strip out that code entirely - we should
1666    support setting the colours and font sizes, but a GUI interface for setting
1667    them would be better.
1668
1669  + Fix to compile with a Unicode build of wxWidgets 2.8.  Reported by Bill
1670    Gee.
1671
1672  + Take the width of the messages used above the compass and clino into
1673    account when calculating how much space to allow for them - now the labels
1674    won't overlap or be cut off in translations where they are long.
1675
1676  + (Mac OS X version): Attempt to address the size of the toolbar icons.
1677
1678* cavern:
1679
1680  + Reject *fix with SDs which aren't all positive.  (fixes#2, reported by
1681    susscorfa).
1682
1683  + Use the currently set units when outputting measurements in warnings,
1684    errors, and the stats at the end of the run.  Requested by Bill Gee.
1685
1686  + Include column number when a *include file isn't found.
1687
1688  + Show 'error' in front of error messages, like we show 'warning' in front of
1689    warnings.  Fixes #48, reported by Wookey.
1690
1691  + Increase the threshold for warning that fore and back measurements differ
1692    from 2 SDs to 3 SDs.
1693
1694* findentrances: If the 3d file specifies the coordinate system, use it.
1695
1696* svxedit: Remove svxedit - while an editor with built-in knowledge of survex
1697  would be nice to have, svxedit doesn't really offer that, and it looks ugly
1698  in a modern desktop.
1699
1700* If we run out of memory while reading a processed survey data file, include
1701  the filename in the error message.
1702
1703* Many translation updates - notably Indonesian and Russian are now the two
1704  most complete translations.
1705
1706* (Microsoft Windows version): Add code page 1252 mappings for fancy quotes.
1707
1708* Transliterate gradient and infinity symbols if the current character set
1709  lacks them.
1710
1711* Add SVG version of .plt icon.
1712
1713* Manual:
1714
1715  + Add complete list of quantities you can set SDs for.  Thanks for Wookey for
1716    highlighting that the previous list was incomplete.
1717
1718  + Document averaging of a group of repeated readings.
1719
1720  + Add a link to the sample data from the manual.
1721
1722  + Remove references to contact addresses which are no longer there.  Remove
1723    offer to post people floppies, and references to a CD image which isn't
1724    available for download.
1725
1726* Remove non-breaking spaces from the diffpos and extend manual pages, as they
1727  actually make the output formatting worse (presumably these used to work
1728  around a since-fixed bug in one of the docbook processing tools).
1729
1730* doc/TODO.htm: Update.
1731
1732* Fix to compile without warnings with 'g++ --std=gnu++11'.
1733
1734Changes in 1.2.17 (2015-02-24):
1735
1736* MacOS X version:
1737
1738  + Update INSTALL file with current status.
1739
1740  + Aven.app now has a custom icon.
1741
1742  + Add icons for all the filetypes supported.
1743
1744  + Add Finder actions for .svx, .3d, .plt and .pos files.
1745
1746  + aven: Hide the status bar and tool bar in Full Screen mode, as wx doesn't
1747    currently do this for us.
1748
1749  + aven: Fix short-cut for toggling Full Screen mode.
1750
1751  + aven: Make "About" menu item appear.
1752
1753  + aven: Fix "Close" button in about dialog.
1754
1755  + aven: Make custom cursors black with a white outline to match the standard
1756    OS X cursor.
1757
1758  + svxedit: Now wrapped up in an application bundle as svxedit.app.  It
1759    still doesn't really work like a standard app though - e.g. you can't load
1760    files from Finder (instead run svxedit.app and use File->Open), the font
1761    size of most menu items is wrong, the icon for the app is the wish icon
1762    rather than the svxedit icon, shortcuts use Ctrl not the Cmd key, and
1763    probably more.  I'd probably recommend using another editor (OS X comes
1764    with TextEdit.app for example).
1765
1766  + The documentation is now in a "Docs" directory alongside the apps, rather
1767    than in the rather less obvious "share/doc/survex" directory.
1768
1769  + Default to building for x86_64, since all modern Macs are 64 bit.
1770
1771  + Disable use of liblzma when building wxWidgets for OS X, which was
1772    preventing the build from working on OS X 10.6.8.
1773
1774  + Download wx sources from SF via redirecting link.  Thanks to David A.
1775    Riggs.
1776
1777  + buildmacosx.sh: Handle the mount point for the disk image containing a
1778    space.
1779
1780  + Link with a static build of PROJ for doing coordinate system conversions.
1781
1782  + Build wx with --disable-webview to avoid a compilation failure on OS X
1783    10.10.1.
1784
1785  + Use wx-config --cc and --cxx to get the compilers to use for building
1786    everything else, as wx adds options to them which otherwise cause linking
1787    errors.
1788
1789  + The diskimage (.dmg) file is now compressed with bzip2, which gives a
1790    smaller download.  This means OS X 10.4 is required, but we probably
1791    already need at least 10.5 because that's the minimum version which the
1792    wxWidgets build supports by default.
1793
1794  + Remove unused files and copies of files from the diskimage.
1795
1796* cavern: If the same leg is repeated consecutively, average the readings and
1797  treat as a single leg.
1798
1799* dump3d: Report SEPARATOR used by the file being read.
1800
1801* aven.svg: Fix visual glitch in SVG icon for aven.  Noted by David A. Riggs.
1802
1803* aven:
1804
1805  + Greatly reduce flicker when mouse is moved to the top of the screen in full
1806    screen mode and the menu bar reappears.
1807
1808  + For export formats where scaling is supporting, aven now actually uses the
1809    scale specified in the export dialog (previously it ignored this and used
1810    1:500).
1811
1812  + Reimplement animation so that it's based on angular change per unit of
1813    elapsed time, rather than averaging the time take for the last two scene
1814    redraws.  This gives smoother animation in the face of variable load and
1815    scene redraw time, and should be more consistent between platforms.
1816
1817  + Switching to a point of the compass during auto-rotation now jumps straight
1818    there rather than the two animations fighting.
1819
1820  + Reduce the maximum auto-rotation speed, as the previous limit was uselessly
1821    fast.
1822
1823  + Disable stepping the rotation angle when animating (previously we only did
1824    when rotating).
1825
1826  + Speed up start-up a bit - rather than loading icons from individual PNG
1827    files on disk, compile them into the aven binary.
1828
1829* (Unix version): Add "MimeType" field to desktop files so that file
1830  associations work out of the box with modern desktop environments.
1831
1832* Add start of Hungarian translation from Imre Balogh.
1833
1834* Merge in many updates to the Russian translation from "vsuhachev".
1835
1836* Assorted minor updates to other translations.
1837
1838* Create scalable (SVG) versions of file type icons.
1839
1840* doc/manual.sgml: Remove $Id and $Date markers, as they don't get expanded now
1841  we're using git.
1842
1843* tests/: Improve test coverage in a few places:
1844
1845  + Extend tests of fore and back sights to test calibration of the back
1846    compass.
1847
1848  + Test "Can't calibrate angular and length quantities together" error.
1849
1850  + Check that "*set names ." works when "." is also the decimal point.
1851
1852Changes in 1.2.16 (2014-10-17):
1853
1854* aven: Add KML export (stations only currently).
1855
1856* aven: Allow measuring line to measure from anonymous stations.  (Fixes #44)
1857
1858* aven: Fix corrupted names in exported files.
1859
1860* aven: Fix error log window under wxWidgets >= 2.9 to include the system
1861  information before the first log message like it does under wxWidgets 2.8.
1862
1863* cavern: Add support for "*cs JTSK" and "*cs JTSK03".
1864
1865* tests/: Improve test coverage.
1866
1867* Translation updates for many languages, plus the start of translations to
1868  Greek and Polish.
1869
1870* Fix to build against wxWidgets 3.0 built with assertions disabled.  Reported
1871  by Martin Sluka.
1872
1873* Fix warnings when compiling with clang (which is the default compiler on
1874  Mac OS X).  Reported by Martin Sluka.
1875
1876Changes in 1.2.15 (2014-08-14):
1877
1878* cavern: The *cs command now also supports "long-lat", "s-merc" (for "Web
1879  Mercator"), EPSG and ESRI codes, "eur79z30", "ijtsk" and "ijtsk03".  This
1880  means that we now support all the coordinates systems which Therion does,
1881  except for a few which don't have X=East and Y=North.  The documentation
1882  for *cs has also been improved.
1883
1884* aven: We no longer persist full screen mode between runs - it's not a
1885  standard behaviour of desktop programs, and it's too easy to go into full
1886  screen mode from the menu and then not be able to get out again because you
1887  don't know the required key shortcut. (ticket#39)
1888
1889* aven: When in full screen mode, moving the mouse to the top of the screen now
1890  makes the menu bar appear.  This provides a non-shortcut way out of full
1891  screen mode, as well as making it easier to perform other operations while in
1892  full screen mode.  The current implementation gives an annoyingly flickery
1893  transition, but hopefully we can improve this in future. (ticket#39)
1894
1895* (MacOS X version): If built with wxWidgets >= 3.1.0 (which is still in
1896  development), we now call EnableFullScreenView() which improves the full
1897  screen mode experience on OS X 10.7 and later.
1898
1899* img library: Improve documentation for img_ERROR_INFO.
1900
1901* tests/: Ship some missing .out files and compare.tst.
1902
1903* tests/: cavern.tst testcase back2 is now actually used.  Fix a bug in this
1904  testcase, and extend it to cover a variant of the situation reported as a bug
1905  in therion by Bill Gee to the therion list.
1906
1907* (Linux version) survex.spec: Add run-time requirement on proj and proj-epsg
1908  for the survex package and on tk for the svxedit package.
1909
1910Changes in 1.2.14 (2014-07-05):
1911
1912* img library: Add ability to store a PROJ4 string describing the coordinate
1913  system in use in 3d v8 files.
1914
1915* aven: If the 3d file specifies a coordinate system, then use it for exporting
1916  to formats which need to know (currently GPX).  If the input file doesn't
1917  specify the coordinate system, allow the user to enter a PROJ4 string in the
1918  export dialog.
1919
1920* aven: You can now quickly zoom to a particular area by holding down the
1921  "Shift" key and dragging with the left mouse button to create a rectangular
1922  "rubber band box" around the area you wish to zoom to.  If you release the
1923  "Shift" key while still dragging, the box is centred on the start point
1924  rather than having one corner there.
1925
1926* aven: Fix exporting of passage tubes in elevations and extended elevations
1927  - previously up and down were getting drawn across the page!
1928
1929* aven: Fix "Cancel" to work on the print/export dialog, broken by changes in
1930  1.2.13.  (Reported by Brian Clipstone)
1931
1932* aven: Fix the conditions on which the menu item "Cancel measuring line" is
1933  enabled - previously it was hard to actually cancel it via the menu.
1934  Reported by Hugh St Lawrence.
1935
1936* aven: Fix wx assertion failures when showing hit test debug view on platforms
1937  such as 64-bit Linux.
1938
1939* aven: When viewing from above, show "Plan" above the "clino" which indicates
1940  the tilt angle (instead of "Elevation -90°").
1941
1942* aven: The extended font data now loads faster, and also uses less memory on
1943  64-bit platforms.
1944
1945* aven: Dragging the vertical divider between the side panel and the 3D view
1946  now only updates when you finish the drag, as redrawing continuously just
1947  looks clunky except on an ultra-fast machine.
1948
1949* aven: (German translation) Abbreviate "Blickrichtung" so it doesn't overfill
1950  the space available in the aven UI.
1951
1952* cavern: Add a *cs command to allow setting the coordinate system for *fix
1953  commands, and the coordinate system used for processed survey data.  The
1954  latter is now stored in 3d v8 format files.
1955
1956* cavern: Add support for 'L' flag (exclude from length) in Compass .dat files
1957  and handle it in the same way as the "DUPLICATE" flag in .svx files.
1958
1959* cavern: If there's more than one *fix command with coordinates, still
1960  actually fix the second and subsequent ones, to avoid triggering bogus errors
1961  about unconnected surveys.
1962
1963* cavern: If there's more than one *fix command with coordinates, report the
1964  station name of the previous one, plus the file and line number where it was.
1965
1966* cavern: Fix handling of the rather contrived case of *fix with no coordinates
1967  followed by *solve and then another *fix with no coordinates not to access
1968  freed memory.
1969
1970* dump3d: Report any specified coordinate system.
1971
1972* doc/3dformat.htm: Update to document how the coordinate system is stored.
1973
1974* (Microsoft Windows version): Include dump3d in the installer.
1975
1976* Fix a compiler warning.
1977
1978* Improve test coverage.
1979
1980Changes in 1.2.13 (2014-05-15):
1981
1982* aven: Fix --print option to wait for printing to happen before exiting
1983  (previously it would exit right after opening the print dialog, so you
1984  couldn't actually print anything out using it).
1985
1986* aven: Increase the threshold for how close the pointer needs to be to a
1987  station from 5 pixels to 7 to try to help touchscreen users.  Reported by
1988  Hugh St Lawrence.
1989
1990* aven: Add "fat finger" mode, toggled by pressing F2, to allow investigating
1991  if increasing the minimum pointer to station threshold helps Hugh's problems
1992  with using aven on a touch screen device.
1993
1994* aven: The measuring line was unable to see stations which had just been
1995  revealed by toggling surface or underground legs on - this is now fixed.
1996
1997* aven: Add "hit test grid debug" mode, which shows the hit test grid and how
1998  many entries are in each box (toggled by F3).
1999
2000* aven: Pressing F4 now allows the user to toggle wxWidgets assertion messages
2001  off and back on.
2002
2003* aven: Create the empty hit-test grid data structure lazily, to reduce start
2004  up time a little.
2005
2006* cavern: Improve messages which talk about "tags" and/or "prefixes" in *begin
2007  and *end commands to instead talk about "survey names".
2008
2009* cavern: For ages cavern has warned if you reentered a survey, but this
2010  warning was suppressed if it occurred at the same line of the same file as
2011  the survey was first entered, but this can only happen if you include the
2012  same survey file more than once, which isn't a sensible thing to do for a
2013  file with actual survey data in (you might reasonably do it to set up survey
2014  grade details or something like that).  The warning is now given in this
2015  situation too.
2016
2017* cavern: After 5 warnings about reentering a survey we give up warning about
2018  it, but we used to keep reporting where the survey was originally entered -
2019  this secondary diagnostic message is now silenced when the main message is.
2020
2021* (Microsoft Windows version): Compile C code with optimisation on.
2022
2023* Add the start of a Russian translation, with messages take from therion.
2024
2025* Minor translation updates to French.
2026
2027* Fix compiler warning from GCC.
2028
2029* Testsuite improvements:
2030
2031  + Test that "..." anon station works.
2032
2033  + cavern.tst: Check number of errors returned by all testcases which should
2034    fail and give an error count.
2035
2036  + cavern.tst: Fix to actually fully test everything when builddir != srcdir.
2037
2038Changes in 1.2.12 (2014-04-14):
2039
2040* aven: Fix measuring line to show change in altitude rather than altitude
2041  itself (accidentally broken by changes in 1.2.11).  Reported by Brian
2042  Clipstone.
2043
2044* aven: Fix printing when built with wxWidgets 3.0.
2045
2046* aven: Several visual improvements to printouts:
2047
2048  + Move the numbers below the scale bar down a little so that they don't
2049    overlap the scale bar ticks.
2050
2051  + Set the clipping region after we draw the page border and info box to avoid
2052    clipping the border in print preview.
2053
2054  + Tidy up the appearance of the compass and elevation arrow.
2055
2056* aven: Fix to build with libav 10.  Reported by Moritz Muehlenhoff in
2057  <http://bugs.debian.org/739332>.
2058
2059* aven: Fix to build with older libav where avcodec_free_frame() isn't
2060  available.
2061
2062* (Linux version) survex.spec: Update spec file used for building RPM packages.
2063
2064* (Unix version): Add "Keywords:" entry to .desktop files.
2065
2066* (Unix version): Enable large file support, mostly to support filing systems
2067  which return 64 bit inode values, such as CIFS mounts.
2068
2069* (Microsoft Windows version): Only allow "A-Z" or "a-z" for driver letters,
2070  rather than any character which is a letter in the current locale.
2071
2072* Various translation updates.
2073
2074Changes in 1.2.11 (2014-01-28):
2075
2076* aven: Fix wxWidgets assertion when double clicking on an anonymous station.
2077  Reported by Kevin Dixon.
2078
2079* aven: Embed the font data for the first 256 Unicode characters for use in the
2080  survey pane into the compiled aven binary to reduce start up overhead.  Any
2081  additional characters needed are loaded from a data file only if/when a
2082  character >= U+100 is actually needed (as before).
2083
2084* aven: Fix display of Unicode characters above 256 when there's a character
2085  <= 256 earlier in the same string.
2086
2087* aven: Use the actual width of Unicode characters above 256 rather than
2088  assuming they are 16 pixels wide.
2089
2090* aven: If full screen, don't show the side panel when a new file is opened
2091  (e.g. via Ctrl+O).
2092
2093* aven: Don't give an assertion failure when showing passages for a cave with
2094  no vertical extent.  Reported by Jonny Prouty.
2095
2096* aven: Change terminology in print dialog - say "legend" instead of "info
2097  box".
2098
2099* aven: Add option to show the tilt angle as a percentage gradient.
2100
2101* aven: Show the units (degrees, grads, or percent) for the tilt and bearing
2102  indicators.
2103
2104* aven: All length units are now translatable.
2105
2106* aven: Split log_fl_error helper function out of CHECK_GL_ERROR macro, which
2107  will reduce code size and also the number of deprecation warnings about
2108  gluErrorString on Mac OS X 10.9.
2109
2110* (Microsoft Windows version): aven: Try to work around redraw issues related
2111  to the measuring line by redrawing the whole window, which doesn't seem to be
2112  measurably slower.
2113
2114* cavern: If *units is used to try to set units for LEVEL, PLUMB, or POSITION,
2115  give an error rather than quietly ignoring the attempt.
2116
2117* cad3d: Make cad3d remap control characters and spaces in station names when
2118  generating PLT output in the same way aven does.
2119
2120* Various translation updates (particular thanks to Eric Madelaine and Dennis
2121  Baudys), including the start of a Bulgarian translation, with messages taken
2122  from Therion and elsewhere.
2123
2124* (Microsoft Windows version): On Microsoft Windows 2000 and newer, use
2125  GetUserDefaultUILanguage() to get the UI language to use.  For older
2126  versions, continue to use GetUserDefaultLCID().
2127
2128* (Microsoft Windows version): The Indonesian translation will now be used
2129  automatically when the system language is set to Indonesian.
2130
2131* (Mac OS X version): Fix to build with wx 3.0.0 on OS X 10.9.  Thanks to David
2132  A. Riggs for his work on this.
2133
2134* (Mac OS X version): Update buildmacosx.sh script to use wx 3.0.0, and add a
2135  checksum check for the downloaded wx sources.
2136
2137* Fix a lot of the compiler warnings when building with clang.
2138
2139* doc/manual.sgml: Add missing quantities to the list documented as accepted by
2140  *units: LEFT, RIGHT, UP/CEILING, DOWN/FLOOR (missing entirely);
2141  BACKCOMPASS/BACKBEARING, BACKCLINO/BACKGRADIENT (missing from the main list,
2142  mentioned in list of the units that can be set for them); COUNT (missing
2143  alternative name for COUNTER); DX/EASTING, DY/NORTHING, DZ/ALTITUDE
2144  (incorrectly listed as X, Y, Z).  Reported by Jonny Prouty.
2145
2146* Test suite: Improve test coverage for cavern.
2147
2148Changes in 1.2.10 (2014-01-15):
2149
2150* aven: Fix assertion if two mouse buttons are held down at the same time.
2151  If dragging with more than one mouse button held down, releasing one causes
2152  another which is still held down to take effect.  Reported by Brian
2153  Clipstone.
2154
2155* aven: If we fail to start the external editor when the user clicks on an
2156  error or warning from cavern, show an error box.
2157
2158* aven: If the survey has a title, add it as a top-level <title> element to
2159  exported SVG files.
2160
2161* aven: Escape '<', '>', and '&' in labels in exported SVG files.
2162
2163* aven: In GPX export, set the <time> element to the datestamp from the 3d
2164  file.
2165
2166* aven: Don't try to write the title if it isn't set or is empty when exporting
2167  GPX files.
2168
2169* aven: Don't bother looking up the printer page setup info when exporting.
2170
2171* (Microsoft Windows version): aven: Fix crash on "File->Print" or
2172  "File->Export" under Windows XP, reported by Brian Clipstone.
2173
2174* (Microsoft Windows version): aven: Fix error dialog about an incorrectly
2175  encoded filename which could occur if run without being asked to load a file
2176  on startup.
2177
2178* (Microsoft Windows version): aven: Compile with optimisation on.
2179
2180* img library, aven: Although processed CMAP data files are often referred to
2181  as "CMAP .XYZ files", it seems that actually, the extension .XYZ isn't used,
2182  rather .SHT (shot variant, produced by CMAP v16 and later), .UNA (unadjusted)
2183  and .ADJ (adjusted) extensions are.  Since we've long checked for .XYZ, we
2184  continue to do so in case anyone is relying on it, but also check for the
2185  other extensions.
2186
2187* img library: Add new "datestamp_numeric" field to struct img giving the
2188  datestamp as a time_t in UTC (or (time_t)-1 if there's no datestamp or we
2189  failed to convert it).  For .3d >= v8, this field is reliable.  We attempt to
2190  convert date strings in .3d <= v7 and CMAP XYZ files, but may get the
2191  timezone wrong.
2192
2193* img library: Fix my_strcasecmp() to handle top-bit set characters better.
2194
2195* cavern: Fix NULL pointer dereference when processing Compass DAT file without
2196  'SURVEY DATE:'.
2197
2198* doc/manual.sgml: Update references to Survex 1.1 which should be to 1.2.
2199
2200* doc/manual.sgml: Note the station length limit Smaps used.
2201
2202* Fix some compiler warnings if built with glibc's fortify source feature
2203  enabled.
2204
2205Changes in 1.2.9 (2014-01-08):
2206
2207* Document --3d-version in cavern man page and the manual.
2208
2209* aven: Fix compilation error in movie export code with recent libavi.
2210
2211* aven: Fix warning on stderr when export a movie as MPEG.
2212
2213* img library: In non-hosted mode, don't define GETC and PUTC if they're
2214  already defined, to allow easy overriding with getc_unlocked() and
2215  putc_unlocked() (which are significantly faster on Linux).
2216
2217* img library: In non-hosted mode, check that int is at least 32 bits,
2218  and if not, use long.  In practice, platforms with 16 bit int are mostly
2219  obsolete, but it's not hard to be portable here.
2220
2221* img library: Add test that img.c and img.h compile in non-hosted mode
2222  (regression test for issue fixed in 1.2.8).
2223
2224* (Microsoft Windows version): aven is now built with wxWidgets 3.0.0.
2225
2226* Update translations from launchpad and from existing similar messages.
2227
2228* Fix some compiler warnings.
2229
2230Changes in 1.2.8 (2013-10-29):
2231
2232* cavern: Fix handling of anonymous wall stations ('..' by default) to
2233  implicitly set the SPLAY leg flag, as was intended.  Reported by Thomas
2234  Holder.
2235
2236* cavern: Tweak .err file output not to lose the space in front of certain
2237  statistics when the value gets large.
2238
2239* cavern: Eliminate redundant progress message when solving simultaneous
2240  equations.
2241
2242* aven: Add a format drop down to the export dialog, and only show fields which
2243  are meaningful and supported for the currently selected export format.  The
2244  format defaults to that used most recently.  The "Elements" and "View" boxes
2245  have been swapped in the print and export dialogs as that layout works much
2246  better when the "View" box is hidden.
2247
2248* aven: Changing checkboxes in the print or export dialog didn't work in 1.2.7
2249  - now works again.  Reported by Anthony Day.
2250
2251* aven: Add GPX export (based on findentrances patch from Olaf Kähler).  In
2252  this release the projection which the survey coordinates are in defaults
2253  to the BMN M31 grid used in the Totes Gebirge in Austria.  On Unix, you
2254  can edit ~/.aven and add a new line setting 'input_projection' to a PROJ
2255  projection string.  The ability to specify this projection in a better
2256  way is coming soon.
2257
2258* aven: New export options "Origin in centre" and "Full coordinates" - the
2259  latter fixes #10.  GPX and PLT output implicitly force "full coordinates".
2260
2261* aven: The "Sketch" vector drawing program got renamed to "Skencil" some
2262  time ago, so update references.
2263
2264* aven: Make the Presentation->Play menu item a checkbox, to avoid a warning
2265  with wxMSW 2.9.5.  Reported by Brian Clipstone.
2266
2267* aven: Make right click in an empty presentation mark the current position and
2268  open it to edit, instead of crashing.
2269
2270* aven: Update movie export code to work with latest libav API.  Reported by
2271  Sebastian Ramacher.
2272
2273* aven: Improve reporting of errors during the process of exporting a movie.
2274
2275* aven: Don't try to close the movie if we aren't producing one.
2276
2277* aven: Fix assertion failure when double-clicking on the survey with wx2.9.
2278
2279* aven: Fix to build with wxMSW 2.9.5.
2280
2281* aven: Fix to build with wx 2.9.5 with wx2.8 compatibility disabled.
2282
2283* cad3d: The "Sketch" vector drawing program got renamed to "Skencil" some time
2284  ago, so add a new --skencil option to specify this output format.  The old
2285  name (--sketch) is still recognised for compatibility.
2286
2287* cad3d: Make --marker-size work for Skencil and SVG output.
2288
2289* dump3d: Make --show-dates option show dates for XSECT.
2290
2291* img library:
2292
2293  + Fix to work once more when used outside of Survex (missing definition of
2294    max() macro and a bad call to free() in img_close() for a file opened for
2295    reading).
2296
2297  + Use lround() instead of round(), and make the tests around whether we use
2298    the library function or the our fallback implementation saner.
2299
2300  + Fix // comments in C code for portability to pre-C99 compilers which don't
2301    support these as an extension.
2302
2303  + Can now be compiled as C++ as well as as C.
2304
2305* (Microsoft Windows version): The installer is now built with a newer version
2306  of Innosetup, and includes translations for all the languages which Survex
2307  itself has any translations for.
2308
2309* (Microsoft Windows version): aven is now built with wxWidgets 2.9.5.
2310
2311* Minor translation updates.
2312
2313* tests/Makefile.am: Distribute files for "normal_bad" testcase.
2314
2315Changes in 1.2.7 (2013-07-27):
2316
2317* Add support for anonymous stations, which are indicated by one, two or three
2318  separator characters - with the default separator of '.', that means '.',
2319  '..', and '...' are anonymous stations.  Single separator ('.' by default)
2320  is an anonymous non-wall point, double separator ('..' by default)
2321  is an anonymous wall point at the end of an implicit splay), and triple
2322  separator ('...' by default) is an anonymous point (with nothing special about
2323  the leg).  A new *alias command allows '-' to be mapped to '..' for
2324  compatibility with pocket topo: *alias station - ..
2325
2326* New version 8 of the 3d format:
2327
2328  + Supports new flags img_SFLAG_ANON and img_SFLAG_WALL.
2329
2330  + New explicit file-wide flag for 'this is an extended elevation', rather
2331    than modifying the survey title to indicate this.
2332
2333  + The survey prefix is often unchanged from one leg to the next, so use a
2334    spare flag to compactly indicate when there's no label change.
2335
2336  + The data style of each leg is now stored.
2337
2338  + The "processed at" time is stored as seconds since 1970 rather than a
2339    human-readable string.
2340
2341  + Since 3d v8 features significant changes to the format, the format
2342    documentation for v7 and earlier has been split off into 3dformat-old.htm.
2343
2344* img library:
2345
2346  + New station flags img_SFLAG_ANON and img_SFLAG_WALL.
2347
2348  + Handle .pos files containing unnamed stations - don't suck the next line in
2349    as the station name, and set img_SFLAG_ANON for them.
2350
2351  + Repurpose the long unused fBinary parameter to img_open_write() as a flags
2352    parameter, and add img_FFLAG_EXTENDED to specify that this is an extended
2353    elevation, in place of appending " (extended)" to the title.  Internally we
2354    still append this to the title (and remove it upon reading) when writing
2355    3d v7 or earlier, but for the new 3d v8 format, this flag is stored
2356    explicitly in the file.
2357
2358  + img.h: Add comments for the lists of "Leg flags" and "Station flags".
2359
2360* aven:
2361
2362  + We now require at least wxWidgets 2.8.0 - it was released over 6 years ago
2363    now, and the wx developers consider even 2.8 to be rather long in the
2364    tooth.  We stopped testing building with wxWidgets 2.6 some time ago, and
2365    formally dropping support for older versions allows a number of workarounds
2366    to be removed from the aven source code.  Also, features deprecated in
2367    wxWidgets 2.9 are no longer used in our code.
2368
2369  + Don't run incremental search on every key-press, as on a slow machine the
2370    short initial search(es) will take a while but not be useful.  Instead only
2371    actually run the search when we're told there are no more key-presses
2372    queued up.
2373
2374  + Implement support for including cross-section information in exported SVG
2375    and DXF files (ticket#4).  The DXF export is untested currently.
2376
2377  + Show splay legs faded by default, with menu options to hide them or show
2378    them like other legs.
2379
2380  + Speed up loading a .3d file with cross-sections by using a map to convert
2381    station names to positions.
2382
2383  + In the cavern log window, don't highlight a file:linenumber if there's no
2384    message after it, which avoids highlighting the "Included from" lines
2385    wrongly.
2386
2387  + Fix not to crash when trying to report an error while starting up.
2388
2389  + (MacOS X version): Change the menu shortcut for "Full Screen Mode" to be
2390    the OS X standard shortcut Shift-Command-F (previously we used F11, but
2391    that's used by the desktop).
2392
2393  + Add checks for errors when reading the font file.
2394
2395  + Remove useless extra quoting when invoking vim to show the location of an
2396    error from cavern.
2397
2398  + Include GL/gl.h before GL/glext.h (needed on Debian wheezy).
2399
2400  + Use wxValidator to simplify keeping svxPrintDlg member variables and fields
2401    in the dialog in sync.
2402
2403* cavern:
2404
2405  + Demote errors about invalid dates to warnings, since we've accepted *date
2406    for ages without any checks on the value, and so existing datasets
2407    probably contain invalid dates and dates in other formats.  (ticket#19)
2408
2409  + New *alias command allows '-' to be mapped to '..' for compatibility with
2410    pocket topo: *alias station - ..
2411
2412  + We want to warn if there's a clino reading which it would be impossible to
2413    have read from the instrument (e.g. on a -90 to 90 degree scale you can't
2414    read "93" (it's probably a typo e.g. for "39").  However, the gradient
2415    reading from a topofil is typically in the range 0 to 180, with 90 being
2416    horizontal.  Really we should allow the valid range to be explicitly
2417    specified, but for now we infer it from the zero error - if this is within
2418    45 degrees of 90 then we assume the instrument can read between 0 and 180
2419    degrees.
2420
2421  + If the survey isn't all connected, still run survey tree checks and report
2422    errors and/or warnings which might suggest typo locations.  Thanks to Kevin
2423    Dixon for the report which highlighted this issue.
2424
2425  + Report a warning if *begin SURVEY has a separator character in SURVEY.
2426
2427  + Report column numbers as well as line numbers for some cavern errors and
2428    warnings.
2429
2430  + Adjust width of node stats table to fit longest count when there are more
2431    than 9999 of a particular order of node.
2432
2433  + If the argument to *include has an opening double quote but the closing
2434    double quote is missing, then skip trying to open the file.
2435
2436  + Move "Station X referred to just once" warning after non-existent survey
2437    check - if both fire, the non-existent survey error is likely to be more
2438    relevant.
2439
2440  + We no longer follow an error for a bad reading in passage data with a bogus
2441    "End of line not blank" error, but instead check the remaining readings on
2442    the same line.
2443
2444  + We no longer follow an error about OMIT for a required reading with a bogus
2445    "End of line not blank" error.
2446
2447  + Report an error if the scale factor in *calibrate is zero - it doesn't make
2448    sense and probably means someone reversed the arguments to *calibrate.
2449
2450  + Report the parent include files starting from the outermost, as that's more
2451    logical when there are multiple levels involved.
2452
2453  + If we were expecting a numeric field and instead get something which starts
2454    with '+', '-', or '.' but which isn't a number, then fix the error to
2455    include that character in the token reported.
2456
2457  + Simplify handling of quantity lists to only recognise 'DEFAULT' as the
2458    first item.
2459
2460* cad3d: Check for errors from img_rewind() and report them.
2461
2462* dump3d:
2463
2464  + Build, install and package dump3d as standard - it's useful for grabbing
2465    info from 3d files in scripts.
2466
2467  + Add --show-dates option.
2468
2469  + Show only 2 decimal places on coordinates and passage dimensions.
2470
2471  + Report the data style of legs.
2472
2473  + Report if the file is an extended elevation.
2474
2475  + Report img_STOP as STOP rather than CODE_0xffffffff.
2476
2477* Test suite:
2478
2479  + cavern.tst: Fix equatenosuchstn testcase (added in 1.2.6) to normalise the
2480    expected output so it passes reliably.
2481
2482  + cavern.tst: Run diffpos <expected> <actual> so the reports of 'Added' and
2483    'Deleted' stations upon failure are the more natural way round.
2484
2485  + Add more testcases, expand some existing testcases, and add expected output
2486    for more.
2487
2488* (Microsoft Windows version): Use wx-config's --cc and --cxx flags to find the
2489  appropriate C and C++ compilers to use, and link mingw build statically to
2490  avoid needing the libgcc DLL (which newer GCC seems to have by default).
2491
2492* (Unix version): When determining the character set for command-line tools,
2493  check environmental variable LANG after LC_ALL and LC_CTYPE.
2494
2495* When determining the language, check environmental variable LC_ALL before
2496  LC_MESSAGES and LANG (but after SURVEXLANG).
2497
2498* If we don't find the message file, only give an error if it was specified
2499  with SURVEXLANG, since that is an explicit instruction to Survex, whereas
2500  LANG, LC_ALL and LC_MESSAGES are essentially system "preferred locale"
2501  settings.
2502
2503* There are a handful of hard-coded English message strings for reporting
2504  errors trying loading message files, etc.  These are all now ASCII, as if we
2505  fail trying to open a message file, it's more likely the encoding isn't
2506  set correctly.
2507
2508* Prune strings we are no longer using and are probably unlikely to use again
2509  into a new file po_codes_dead, so that translators don't get presented with
2510  them to translate.
2511
2512* Merge lots of translation updates.  Most translations are now complete or
2513  close to complete.
2514
2515* Add start of Indonesian translation from Arief Setiadi Wibowo.
2516
2517* Fix various compiler warnings when building from source.
2518
2519* Include scripts gdtconvert and gen_img2aven in the source distribution.
2520
2521Changes in 1.2.6 (2012-02-23):
2522
2523* (Mac OS X version): Fix so that cavern finds its messages when run by aven.
2524
2525* (Microsoft Windows version): Include JPEG images for aven in the installer
2526  package (ticket#35).
2527
2528* cavern: If we have a reference to a station in a non-existent survey, give a
2529  helpful error rather than saying the station hasn't been exported from the
2530  survey.  (Bug reported by Martin Green via email)
2531
2532* aven: Fix to build with a non-Unicode wxWidgets library.  Patch from Olaf
2533  Kahler.
2534
2535* findentrances: Add findentrances utility from Olaf Kahler which produces a
2536  .gpx file with waypoints for entrances.  This needs libproj so is disabled
2537  by default for this release - to enable it install the development stuff for
2538  libproj and build survex with:
2539
2540      make FINDENTRANCES=findentrances
2541      make install FINDENTRANCES=findentrances
2542
2543* dump3d: Add support for showing img_ERROR_INFO items.
2544
2545* doc/3dformat.htm: Merge in some improvements from Mike McCombe.
2546
2547* Incorporate a French translation from launchpad I'd previously copied the
2548  English version of by mistake.  Attempt to correct mistranslation of "survey
2549  file".
2550
2551Changes in 1.2.5 (2012-01-03):
2552
2553* aven:
2554
2555  + The survey tree in the left panel is now in sorted order once more.
2556
2557  + No longer fails with an assertion if used for a long time (we were leaking
2558    an OpenGL list each time one had to be regenerated).
2559
2560  + Now builds with newer FFmpeg library.
2561
2562  + Draw measuring line in front of the indicators rather than behind them.
2563
2564  + Loading a new file (or reloading the current one) no longer invalidates
2565    the OpenGL lists for the compass and clino, so will be a fraction faster.
2566
2567* Improve handling of attempts to look up translated messages before the
2568  message subsystem is fully initialised (which only happens if there's an
2569  error early on).
2570
2571* Improve the survex(7) man page text, and fix it to be marked as section 7 in
2572  the man page source as well as in the filename.
2573
2574Changes in 1.2.4 (2012-01-01):
2575
2576* aven:
2577
2578  + A change in 1.2.3 meant that aven tried to use OpenGL before it was
2579    initialised, which doesn't cause problems in some machines, but causes aven
2580    to abort on others.  This is now fixed, and there's a check in place to
2581    help avoid similar issues in future. (ticket#34)
2582
2583  + Always use metres or feet for the depth colour key, and chose a consistent
2584    precision by looking at the depth range. (ticket#30)
2585
2586  + Show the depth units below the colour bar rather than after every value.
2587
2588  + When zooming way in, stay in metres rather than switching to cm.
2589
2590  + On the scale bar, say “1 mile” rather than “1 miles”.
2591
2592* Translation updates for Catalan, French and Slovak.
2593
2594Changes in 1.2.3 (2011-12-31):
2595
2596* Fix to build with wxWidgets 2.9.2.
2597
2598* (Mac OS X version):
2599
2600  + Processing .svx files from aven now works.
2601
2602  + Remove spurious blank lines from the licence text in "Get Info".
2603
2604  + Don't create the help menu at all, as it is empty (because the "About"
2605    entry goes elsewhere) and sometimes seems to appear in the UI.
2606
2607  + INSTALL.OSX: Update to reflect current status.
2608
2609* aven:
2610
2611  + Fix Y coordinates of surface surveys on printouts.  (Closes #32)
2612
2613  + Improvements to text plotted on the survey pane:
2614
2615    - Support plotting Unicode character points > 256 by lazily loading the
2616      data for them from the font file and plotting them with a direct call to
2617      glBitmap(), which is slower but doesn't require a display list per
2618      character.
2619
2620    - Adjust the spacing from fixed width to putting a one pixel gap either
2621      side of each one character (so two between adjacent glyphs).  Mostly this
2622      reduces the horizontal width, but it adds a pixel for characters like "m"
2623      and two in a few cases.
2624
2625    - Fix .pixelfont file generation to correctly handle characters wider than
2626      8 pixels.
2627
2628  + Fix expected cross shape so don't always reject using texture mapping to
2629    draw crosses.
2630
2631  + As we read a survey file, eliminate tubes consisting of zero XSECTs as well
2632    as those consisting of just one.  Previously we would trip over the empty
2633    tube later.  Such tubes can for example be created by extend if a splay shot
2634    is the start or end of a tube.
2635
2636  + Make the green colour used for entrances in the survey tree the same
2637    (slightly darker than before) green used for the entrance blobs.
2638
2639  + Report the version of the library we're actually running with if built
2640    against wx >= 2.9.2.  Make it clear that the version reported is the
2641    version *built* with for wx < 2.9.2.
2642
2643* extend:
2644
2645  + Copy the end markers for passage tubes.
2646
2647  + Preserve left and right data for tubes (previously they were set to -1.0
2648    which means "no info").
2649
2650* img library: Fix incorrect comment in img.h which claimed that img_XFLAG_END
2651  was no longer used - it certainly is!
2652
2653* Use curly double quotes instead of "`" and "'" to quote filenames, etc in
2654  messages, and curly single right quote instead of straight ASCII apostrophe.
2655  Fall back to using straight ASCII versions if we can't represent them in the
2656  current character set.
2657
2658* Translation updates for Catalan, French, Slovak and Spanish.
2659
2660* Test suite:
2661
2662  + Add test coverage for interleaved diving data.
2663
2664  + Add testcase for diving data with topofil-style distance.
2665
2666Changes in 1.2.2 (2011-10-06):
2667
2668* aven:
2669
2670  + Replace the textured-mapped font drawing with an approach based on
2671    glBitmap.  This doesn't suffer from the character alignment issues which
2672    the textured-mapped fonts had, and is actually significantly faster on some
2673    machines.  The current font used is (mostly) fixed-width, but this isn't an
2674    inherent limitation - it was just the easiest font data to convert to a
2675    usable format.
2676
2677  + Fix assertion failure due to rounding differences on loading certain .3d
2678    files.  (ticket#26)
2679
2680  + Fix assertion failure when turning on 3D passages if they stick out higher
2681    or lower than any station.  (ticket#29)
2682
2683  + Fix grid not to disappear when blobs are turned on and blobs are drawn
2684    using lines.
2685
2686  + If a degree sign isn't available in the character set in use, transliterate
2687    it to 'dg' rather than skipping it.
2688
2689  + Fix message which should have been a degree sign but got lost in the format
2690    change for 1.2.0 and then got reassigned in 1.2.1.  Externally, this means
2691    that bearings in the status bar now have a degree sign after them if they
2692    are in degrees rather than nothing (1.2.0) or "&Hide Compass" (1.2.1).
2693
2694  + Fix print dialog to calculate the scale required for "One page" right
2695    before it calculates how many pages are required, so we don't end up
2696    something other than 1x1 being shown when the user changes settings.
2697
2698  + Update the calculations for picking a scale and for deciding how many
2699    pages are needed to take into account the change in info box height made
2700    in 1.2.1.
2701
2702Changes in 1.2.1 (2011-10-04):
2703
2704* Translation updates for US English.
2705
2706* aven:
2707
2708  + Rename the "depth bar" to "colour key" in documentation, menus, etc since
2709    it now shows colours for dates and errors as well as depths.
2710
2711  + In the colour key for "colour by date", change "No info" to "Undated".
2712
2713  + Remove the dark grey background from the colour key and just put a single
2714    pixel black border around the colours.  This is more in keeping with the
2715    other controls, and means the colours are now on a black background so more
2716    visually similar to the survey legs.
2717
2718  + Move the colour key's "Undated"/"Not in loop" entry down a little to
2719    improve the appearance.  Make each section a pixel taller.
2720
2721  + Allow "Colour by X" to be selected even if there's no data for X or only a
2722    single value of X used (the colour key is much smaller in these cases, and
2723    does still provide some useful information).
2724
2725  + Fix incorrect calculation of depth colouring for survey legs which straddle
2726    a depth band boundary.
2727
2728  + The scale bar, compass, clino, and colour key now all have right click
2729    menus which allow related actions to be performed (especially handy in
2730    full-screen mode).
2731
2732  + Improve the font used on the survey pane - it now contains the '-'
2733    character (so the clino now shows negative angles as negative, and dates
2734    in the colour key are now hyphenated).  Also the spacing and alignment
2735    are a little better, though still not perfect.
2736
2737  + PLT file export now handles spaces and control characters in station names
2738    by escaping them with '%' as in URLs.
2739
2740  + Pressing "Enter" on a station in the tree control now centres the view on
2741    that station.
2742
2743  + The scale bar is now cached in an OpenGL display list since it often gets
2744    redrawn exactly the same - for example, when rotating, panning, etc.
2745
2746  + Pressing "F5" forces all cached OpenGL drawing lists to be invalidated and
2747    then forces a refresh of the survey pane.  This is intended as a debugging
2748    aid - if pressing F5 changes the display at all then there's a missing case
2749    where a list should have been invalidated (please report if you find such
2750    a case as it is a bug).
2751
2752  + We now automatically track which OpenGL display lists need to be
2753    invalidated on window width or height changes.
2754
2755  + Increase scale bar maximum width from 65% of the window width to 75% as it
2756    was in 1.0.x (except that if that would overlap the clino we now reduce
2757    that proportion down until it reaches 50%).  Make the limit of zooming in
2758    the same as in 1.0.x.  (ticket#23)
2759
2760  + (Linux version): Previously wxGTK didn't really handle showing a dialog if
2761    the application was fullscreen (the dialog got opened under the main
2762    window!)  To work around this, aven would switch out of full screen mode
2763    temporarily while showing a dialog.  This case works properly with recent
2764    wxGTK, so disable our workaround with versions we know work.  Also, apply
2765    the workaround only for wxGTK, not everywhere except on Microsoft Windows
2766    as there's no reason to think we need it for other platforms.
2767
2768  + Grey out the "View North" action when we're already viewing North, and
2769    similarly for other compass points.
2770
2771  + (Mac OS X and Microsoft Windows versions): Fix missing newline to OpenGL
2772    info in the "About" dialog.
2773
2774  + Fix to set the correct filename on the root of the survey tree - previously
2775    the filename of the previous file loaded was used!
2776
2777  + The movie export code now works with newer versions of the FFmpeg libraries
2778    as well as still working with older versions.
2779
2780  + Fix mixed up messages - the print dialog now says "View" on the left
2781    subgroup of controls rather than some unrelated message.
2782
2783  + On printouts, combine the "Plan View"/"Elevation" info box field with the
2784    field which gives the bearing and reduce the height on the info box by the
2785    removed field, so it's now 3cm for plans and elevations, as for extended
2786    elevations.  Report the tilt angle for tilted elevations which it seems has
2787    been missing for ages (it's not in recent 1.0.x either).
2788
2789  + Tweak the exact positioning of informational text on printouts to look
2790    nicer and make better use of the available space.
2791
2792  + Add keyboard mnemonics to the "Plan" and "Elevation" buttons in the print
2793    dialog.
2794
2795  + Make the sign of the tilt angle for printouts consistent with the sign
2796    shown by the "clino" in the survey pane.
2797
2798  + In the "Print" dialog, when in plan view disable the "Plan view" button,
2799    and similarly for the "Elevation" button.
2800
2801  + (Microsoft Windows version): Sort out appearance of custom cursors.
2802
2803  + If a label isn't valid UTF-8 or CP1252, fall back to ISO8859-1.
2804
2805  + (Mac OS X version): F11 puts aven into full screen mode, but apparently
2806    you can't get out again easily, so add code to explicitly check for F11
2807    being pressed and toggle full screen.
2808
2809* (Linux version): Fix the RPM .spec file for where man pages now get installed
2810  and package aven.svg and the vim support files.  (Fixes from James Begley)
2811
2812* "make check" now performs several checks on the translation files.
2813
2814* More messages are now available to be translated.
2815
2816* cavern: Fix reporting of ranges of survey coordinates, which was broken by
2817  the message handling changes in 1.2.0.
2818
2819* Fix warning when compiling with GCC.
2820
2821* INSTALL: Mention building wxWidgets with --enable-unicode.  Mention using
2822  sudo for installing on Unix.
2823
2824* In the manual, replace the instructions for building from source with a
2825  pointer to the clearer instructions in INSTALL.
2826
2827* In the manual, make it clear that installing with administrator rights
2828  also applies to newer platforms than XP.
2829
2830* doc/TODO.htm: Update.
2831
2832Changes in 1.2.0 (2011-09-20):
2833
2834* Translation updates for Catalan, French, Romanian, Spanish, Slovak, and US
2835  English.
2836
2837* tests/smoke.tst: aven no longer requires an X display for --help or
2838  --version, so replace skip of this check with a check that this remains the
2839  case.
2840
2841* We now use the standard .po and .pot file formats for storing translations
2842  (rather than the Survex-specific messages.txt format), and then translate
2843  these into Survex's .msg format.
2844
2845* (Unix version): Move survex man page to section 7 (since it isn't documenting
2846  an actual command).
2847
2848* (Unix version): Write each generated man page to a temporary file, then
2849  atomically rename, to avoid leaving an empty or partial man page behind if
2850  docbook-to-man dies (1.1.16 had an empty cad3d.1, and we want to avoid a
2851  recurrence of that).
2852
2853* (Unix version): Default to installing docs into /usr/share/doc/survex rather
2854  than /usr/doc/survex.
2855
2856* aven:
2857
2858  + Fix handling of accented characters in the survey pane.
2859
2860  + Aven icon redrawn in SVG format - it's now a vector image which looks
2861    nicer at larger sizes.
2862
2863  + Explicitly request double-buffering, which seems to be needed for systems
2864    with GLX >= 1.3.
2865
2866  + Fix crash while trying to load certain .3d files.
2867
2868  + Movie export code updated to work with more recent versions of FFmpeg.
2869    Currently this is disabled in Microsoft Windows builds, pending getting the
2870    required libraries set up for building releases.
2871
2872  + Reporting of errors during movie export improved.
2873
2874  + Force playback speed to "x1" during movie export.
2875
2876  + Use stock IDs for buttons where appropriate - such buttons may now be
2877    rendered with icons on some platforms.
2878
2879  + If a label isn't valid UTF-8, treat it as CP1252 (the Microsoft superset of
2880    ISO8859-1).
2881
2882  + (Unix version): Remove special handling for toggling "full screen" on wxGTK
2883    as it's no longer required with modern versions.
2884
2885  + Don't redraw the survey on every mouse movement in the survey pane unless
2886    the measuring line is (or just was) active.  (ticket #17)
2887
2888* cavern:
2889
2890  + Drop "non-fatal" from the report of how many errors there were at the end
2891    of the run - it just confuses users - we won't even get here if there's a
2892    fatal error!
2893
2894  + Add --3d-version option to allow the user to specify the version of the 3d
2895    format to output.  (ticket#21)
2896
2897* img library:
2898
2899  + Make the highest and lowest valid values for img_output_version available
2900    in img.h as IMG_VERSION_MIN and IMG_VERSION_MAX.
2901
2902* (Mac OS X version): Fix buildmacosx.sh script to check where the temporary
2903  volume actually gets mounted.  Fix URL for downloading wxWidgets.
2904
2905Changes in 1.1.16 (2011-05-16):
2906
2907* Translation updates for German, Spanish, Italian, Portuguese, Brazilian
2908  Portuguese, and US English.
2909
2910* Use horizontal ellipses character rather than '...' and right arrow character
2911  rather than '->' where these characters are available.
2912
2913* (Unix version): Link with -lGL, if it exists, to support linking with gold or
2914  GNU ld --as-needed (Debian bug #615781).
2915
2916* img.c:
2917
2918  + Fix code typo for IMG_API_VERSION == 0 case.
2919
2920  + Fix code typo in code used when IMG_HOSTED isn't defined.
2921
2922* doc/TODO.htm: Remove entries which have now been done.
2923
2924* (Microsoft Windows version): aven: We now include all the available
2925  translations for messages from wxWidgets, which means that standard widgets
2926  will appear translated where available even if Survex messages aren't
2927  translated.
2928
2929Changes in 1.1.15 (2010-10-15):
2930
2931* aven:
2932
2933  + In the cavern log window, change the "Rerun" button to "Reprocess" to
2934    follow terminology in manual and elsewhere.  Fixes ticket#15.
2935
2936  + When displaying output from cavern, don't update the window after every
2937    line, but only when we don't have data from cavern pending.  Hopefully
2938    addresses ticket#12.
2939
2940  + If we aren't using GL_POINTS for blobs, draw them using a series of
2941    abutting lines rather than with gluDisk which is faster and gives a
2942    consistent shape.
2943
2944  + Check whether blobs and crosses actually render correctly as points/point
2945    sprites, and if they don't, fall back to drawing them with lines.  The
2946    best method is cached on disk, and rechecked automatically if the graphics
2947    hardware is changed or the drivers upgraded.
2948
2949  + Fix non-USE_FNT case to work again (it's limited to ISO-8859-1 characters
2950    though, so we still enable USE_FNT by default).
2951
2952  + Don't offer "All files" wildcard in presentation save dialog.
2953
2954  + (Microsoft Windows): Handle filenames with non-Latin1 characters in in
2955    more places.
2956
2957  + (Microsoft Windows): Quote filenames with spaces and metacharacters in
2958    when running cavern from aven.  Fixes ticket#11.
2959
2960* editwrap: (Microsoft Windows): Handle filenames with non-Latin1 characters.
2961
2962* diffpos: Handle files with duplicate labels in better - extend generates
2963  duplicate labels when it breaks a loop.
2964
2965* Enable eswap-break testcase now that diffpos handles duplicate station names.
2966
2967* New v7 of .3d format which stores survey dates as number of days since
2968  January 1st 1900, so we now support dates from 1900-2078 (rather than
2969  1970-2037) with a smaller file size.  The img API is now versioned - you
2970  can select the new "version 1" by compiling with -DIMG_API_VERSION=1, which
2971  gives the survey dates in days in days1 and days2 instead of as time_t
2972  values in date1 and date2.  Fixes ticket#14.
2973
2974* Consistently use http://survex.com/ rather than http://www.survex.com/ - the
2975  former has been the canonical name for some time, with www.survex.com just
2976  redirecting to it.
2977
2978* (Unix version): Use unlocked file I/O if available, which can be much faster
2979  in some cases (we don't need the locking as we don't do multithreaded file
2980  I/O).
2981
2982* (Mac version): Fix compilation failure due to clash with Point in Mac OS X
2983  headers.
2984
2985* (Mac version): buildmacosx.sh now works again.
2986
2987* Most tests weren't actually running any testcases (looks like a sh
2988  portability issue).  This is now fixed, and fortunately all tests still pass.
2989
2990* Include the extra .isl translation files for Innosetup in the source archive.
2991
2992Changes in 1.1.14 (2010-07-26):
2993
2994* Restore compatibility with wxWidgets 2.6 (1.1.13 required wxWidgets 2.8).
2995
2996* aven:
2997
2998  + After processing survey data, if there were warnings or errors, add a
2999    "Rerun" button to allow easy reprocessing after fixing problems.  If there
3000    were only warnings, also add an "OK" button to allow moving on to viewing
3001    the processed survey data (fixes ticket#13).
3002
3003  + Optimise updating of the cavern log window (hopefully fixes ticket#12).
3004
3005  + Fix links in cavern log window to link from exactly '<file>:<line>' (and
3006    not the ': ' after), and to make the title for the terminal the
3007    warning/error message.  Avoid false positives by checking that '<line>' is
3008    a number.
3009
3010  + Don't double escape the contents of href and target in links in the cavern
3011    log window.
3012
3013  + Improve handling of the splitter window, fixing behavioural glitches in
3014    various cases.
3015
3016  + Highlight stations matching any current search when a file is loaded.
3017    (ticket#9)
3018
3019  + (Mac version): Fix build issue due to Mac OS X polluting the global
3020    namespace with its own "Point" class.
3021
3022  + (Unix version): The Gnome print dialog has its own preview window so
3023    suppress ours if using the Gnome one.
3024
3025  + (Unix version): Link aven with -lGLU which SuSE Linux needs.
3026
3027  + (Microsoft Windows version): Fix handling of a double-click on the survey
3028    tree when built with wxWidgets >= 2.8.11.
3029
3030* cavern: Report relevant file and line number for three warnings which didn't
3031  give them before.
3032
3033* (Unix and Mac versions): configure: Update the wx-config probing code -
3034  wxmac-config etc aren't present with newer wxWidgets versions so there's no
3035  point looking for them now.
3036
3037* (Mac version): buildmacosx.sh: This script builds a diskimage with Survex in
3038  for easy installation.  Update it to work with the latest Survex versions
3039  (use WX_CONFIG not WXCONFIG; use a Unicode build of wxWidgets; if building a
3040  private wxWidgets, use 2.8.11 not 2.7.0-1).
3041
3042* manual:
3043
3044  + Correctly capitalise "GTK".
3045
3046  + Note that on Linux we only regularly test builds with the GTK+ version
3047    (change taken from 1.0).
3048
3049* Fixed the cad3d man page, which was an empty file in 1.1.13.
3050
3051Changes in 1.1.13 (2010-06-16):
3052
3053* Say "wxWidgets" instead of "wxWindows" consistently.
3054
3055* img.c: Fix small memory leak (filename_opened member).
3056
3057* cad3d, aven: Fix export to SVG when a label contains a '%' character.
3058
3059* aven:
3060
3061  + wxWidgets 2.6.0 or newer is now required.
3062
3063  + A "Unicode" build of wxWidgets is now supported.  An "ANSI" build may still
3064    work but hasn't been tested recently (all packaged versions of wxWidgets
3065    seem to be Unicode now).
3066
3067  + Fix potential uses of uninitialised variables which may have been causing
3068    occasional glitches when loading a file on start-up.
3069
3070  + Improvements to the handling of the font used for plotting labels and other
3071    text on the survey pane:
3072
3073    - Loading the font file is more efficient.
3074
3075    - Character spacing is improved.
3076
3077    - Default font is now anti-aliased.
3078
3079  + "About" dialog:
3080
3081    - Add "Copy" button to copy the system info to the clipboard for easier
3082      bug reporting.
3083
3084    - List OpenGL extensions last, since there are usually lots of them with a
3085      modern gfx card.
3086
3087    - Fix 100% CPU usage while the "About" dialog is open.
3088
3089  + Processing .svx files:
3090
3091    - Passing a .svx file on the command line now works better.
3092
3093    - Put the survey data log window in a splitter in the usual frame rather
3094      than opening a separate frame for it.
3095
3096    - Auto-scroll the log window until we've reported a warning or error.
3097
3098    - Fix small memory leak.
3099
3100  + The presentation filename now defaults to using the basename of the
3101    currently loaded dataset, but we always prompt before we first save with
3102    such a name.
3103
3104  + Reduce memory usage when saving a screenshot.
3105
3106  + Allow "Toggle Fullscreen" to work even if no survey is loaded now that we
3107    persist the window size (and maximised or fullscreen state) between
3108    invocations.
3109
3110  + Fix reporting of OpenGL errors.
3111
3112  + Fix glitches when tilting while looking East.
3113
3114  + Added Portuguese and Slovak translations of wxWidgets messages.
3115
3116* Documentation:
3117
3118  + Rationalise manual formats - replace PostScript with PDF and drop RTF.
3119
3120  + Drop the "alternative manual formats" self-extracting zip file - people
3121    will generally just want one of the formats, so downloading several
3122    together isn't very useful.
3123
3124  + 3dformat.htm: Update for v6 format (thanks to Mike McCombe).
3125
3126  + GPL.htm: Replace HTML version of licence with a link to the version on
3127    the FSF website.
3128
3129  + ChngeLog.htm: Stop generating an HTML version of the ChangeLog - it's too
3130    low level to be of interest to non-developers, and developers can look at
3131    the source code.
3132
3133* (Unix version): configure: New preferred name for specifying wx-config script
3134  is WX_CONFIG.  WXCONFIG still supported for compatibility.
3135
3136* (Linux version): Source RPM package dropped as you can just build an RPM
3137  package from the source tarball.
3138
3139* (Microsoft Windows version): The installer is now created with a newer
3140  version of InnoSetup, which gives a 10% smaller download.
3141
3142Changes in 1.1.12 (2007-02-07):
3143
3144* aven:
3145
3146  + Remember the window size or maximised/fullscreen state between invocations.
3147
3148  + Add options dialog to "Export" similar to the one for "Print".
3149
3150  + The "number of pages required" in the print dialog now updates when you
3151    change what is to be shown (underground legs/surface legs/station
3152    names/crosses).
3153
3154Changes in 1.1.11 (2006-11-25):
3155
3156* Updated Czech, Spanish, and Slovak translations.
3157
3158* (MacOS X version): Assorted OS X specific tweaks and fixes.
3159
3160* aven:
3161
3162  + Pick a smaller and clearer font for labels.
3163
3164  + Fix character spacing.
3165
3166  + Tweak display of bearing and elevation angles to look nicer with
3167    proportional fonts.
3168
3169  + Use the title from the 3d (or plt, etc) file for the window title
3170    rather than the filename.
3171
3172  + Show distances to 2 decimal places rather than the nearest integer.
3173
3174  + Only consider underground legs when calculating the depth bands and
3175    depth colouring.
3176
3177  + Add "Colour by Error".
3178
3179  + Add entry for "white" in date and error keys.
3180
3181  + When setting the view to a single point, don't change the scale.
3182
3183  + If reloading the same file, don't change the view
3184
3185  + Fix filetypes selector in open dialog.
3186
3187  + Fix the charset we use for aven in certain cases.
3188
3189  + Call msg_init before using msg_lang or it won't ever be set!
3190
3191  + Pass wx the full language code to initialise the C library locale.
3192
3193  + Fix bug in generating prefix tree view which could lead to a bogus
3194    leading dot on some survey names (bug probably introduced in 1.1.10).
3195
3196  + "New Presentation" now ensures that the side panel is open
3197
3198  + Fix updating of cached opengl lists when the view is reset to the
3199    default.
3200
3201* Ignore LANG if it starts with a digit to avoid problems with bogus value for
3202  LANG which AutoCAD installation seems to set on MS Windows.
3203
3204* (Unix version): configure: Allow SGMLTOOLS and DOCBOOK_TO_MAN to be
3205  specified.  Either/both can be set to ":".
3206
3207* dump3d: Report unknown (to dump3d) codes returned by img.
3208
3209* img library: Flag all stations as underground in the old "ASCII" .3d format.
3210
3211Changes in 1.1.10 (2006-07-14):
3212
3213* aven: Clicking on a survey name in the survey tree now highlights it in
3214  the map view.  Double-clicking zooms the view to show the clicked survey
3215  highlighted.  Clicking the root clears the highlighting and double-clicking
3216  the root restores the default view.  To expand/collapse a branch, click
3217  on the "[+]" or "[-]" icon to the left of the survey name.
3218
3219* aven: The measuring line can now measure to anywhere in plan or elevation
3220  view (not just to a station!)  In plan view the horizontal distance and
3221  bearing are shown, while in elevation view the vertical distance is shown.
3222
3223* aven: Moving the mouse over a station in the survey view now highlights
3224  that station in the survey tree (though it may not be visible if the
3225  survey(s) it is in aren't expanded).
3226
3227* aven: Clicking on a station to centre the view now moves the mouse pointer
3228  to the new location of the station (except on Mac OS X where this isn't
3229  allowed).
3230
3231* aven: Fix which presentation toolbar buttons are shown as depressed.
3232
3233* Fix infinite loop reading 3d files with LRUD data (bug introduced in 1.1.9).
3234
3235* vim files are now installed with the correct paths (bug introduced in 1.1.9).
3236
3237Changes in 1.1.9 (2006-07-04):
3238
3239* (Unix version): Install desktop files for aven and svxedit contributed to the
3240  Ubuntu package by Phil Bull, and corresponding pixmaps.
3241
3242* Fix img to filter out cross-sections which don't match the subsurvey (if
3243  specified).  The API now returns img_XSECT_END to mark the end of a
3244  passage rather than setting a flag on the last img_XSECT of the passage.
3245
3246* Enhance integration with the vim editor - this can now colour .err files, run
3247  cavern from vim and parse error output, and run aven from vim.  Tweak the
3248  existing vim mode for .svx files to fix a few minor bugs and add support for
3249  the new "*data passage" style.
3250
3251* aven: fix drawing of the "blob" end of the measuring line on graphics cards
3252  which can't draw large enough blobs for us.
3253
3254* aven: sort out confusion about what encoding everything is in which means
3255  that the distance measured by the measuring line actually gets displayed
3256  and also fixes problems with empty menu items in non-English locales in
3257  some cases.
3258
3259* aven: redraw grey background after a menu is closed over the aven window
3260  with no survey loaded.
3261
3262* aven: fix bug which caused printing to crash (introduced in 1.1.8).
3263
3264* aven: avoid crash on some machines when opening "About" dialog before having
3265  loaded a survey.
3266
3267* aven: Translate "Plan" and "Elevation" buttons in print view dialog.
3268
3269* (Unix version): aven: Fix character set handling of cavern output.
3270
3271* cavern: Report an error if a cross-section is specified for a station which
3272  doesn't exist.
3273
3274* Updated French and Italian translations.
3275
3276* (Unix version): aven: Fix "Can't open message file `en_US' using path
3277  `${prefix}/share/survex'" error.
3278
3279* Fix bug in 3d file reading on 64 bit platforms when used in STANDALONE mode
3280  (doesn't affect Survex itself, but other applications which use img.c should
3281  update their copy).
3282
3283* (Unix version): Add checks that wxWidgets is a non-unicode version (wx 2.6
3284  and later are caught by configure, whereas older wx versions are caught when
3285  trying to compile).
3286
3287Changes in 1.1.8 (2006.06.30):
3288
3289* Drop support for building with wxWidgets versions prior to 2.4.0
3290  (which was released on 2003-01-07).
3291
3292* aven: Printing through aven now uses settings from the "[aven]" section
3293  of print.ini, and support for hierarchical sections (using "like=")
3294  has been disabled.
3295
3296* aven: Change mouse actions to be compatible with those in Survex 1.0.
3297  The mousewheel now zooms in/out (it doesn't do anything in 1.0) and
3298  left drag is now smart about not rotating and zooming at the same
3299  time.
3300
3301* aven: Highlighting stations now happens as you type, and pressing
3302  "Enter" or clicking the "Find" button now pans and zooms to show the
3303  highlighted stations.
3304
3305* aven: Left-clicking away from a station now cancels measuring line.
3306
3307* aven: Setting view to North, South, East, or West is now animated like
3308  the tilt from plan to elevation.
3309
3310* aven: Fix presentation saving to also write "." for decimal points and
3311  presentation loading to accept either "." or ",".
3312
3313* (Unix version): aven: Add text for all toolbar items so that aven
3314  will work with the Gnome desktop preference for displaying toolbars as
3315  icons with text or just text (wxWidgets needs fixing first though).
3316
3317* (Unix version): aven: Remove the ability to detach the menu bar (yell
3318  if you actually used it and I'll restore it!)
3319
3320* aven: Add "all survey files" option to the "open file" dialog.
3321
3322* (MS Windows version): aven: Fix cursor keys to pan survey.
3323
3324* (MS Windows version): Built with wxWidgets 2.6.3 instead of 2.6.2.
3325
3326* (MS Windows version): Fix installer to work on Windows 2000 or XP if
3327  run by an unprivileged user.
3328
3329* (MS Windows version): Upgrade to the latest version of InnoSetup (the
3330  installer builder we use) and include new installer translations for
3331  UK English, Spanish, Brazilian Portuguese, Italian, Romanian, and Slovak.
3332
3333* (MS Windows version): aven: Include Catalan and Brazilian Portuguese
3334  translations of messages for wxWidgets (the GUI library we use).
3335
3336* aven: Disable "Highlight exported points" if there aren't any.
3337
3338* Updates to French translation from Michel Bovey.  Also updates to German,
3339  Italian, Catalan, Spanish, and Romanian translations.
3340
3341* (Unix version): test suite: fix smoke test to pass even without X running
3342  (it was meant to but the code had a bug).
3343
3344* aven: Check if OpenGL is available and exit cleanly with a helpful error
3345  if it isn't.
3346
3347* (Unix version): aven: Fix --help and --version to work without a working
3348  X display (provided it's built with wxWidgets 2.5.1 or newer).
3349
3350* aven: Automatically select the presentation tab of the notebook when the user
3351  selects "New Presentation" or "Open Presentation".
3352
3353* aven: Fix "Delete" in the presentation list to not get passed on (and so not
3354  reset to default view as well).
3355
3356* aven: Fix Ctrl+Insert in the presentation list not to segfault if the list is
3357  empty.
3358
3359* aven: Fix Cursor Up and Down in the presentation list to move the highlight
3360  up and down instead of being passed on and moving the survey.
3361
3362* aven: Improve SVG output compatibility.  Tested with Mozilla Firefox 1.5,
3363  Adobe's SVG browser plugin, Gimp 2.2.8, Gqview 2.0.0, Opera 8.5,
3364  Safari 2.0.3, and InkScape 0.42.
3365
3366* aven: Put a 5mm border around exported SVG files to allow for station markers
3367  and non-zero width lines.
3368
3369* aven: Fix crash when exporting as SVG or Sketch if labels or surface data
3370  was turned on.
3371
3372* aven: Actually close the file we're exporting which fixes problems with it
3373  not always being fully written.
3374
3375Changes in 1.1.7 (2005.10.18):
3376
3377* cavern: Add validity checking for dates in *date commands (with feature
3378  test in testsuite).  A date entered as just "year" or "year.month" now
3379  becomes a date range for the relevant period (previously it became a single
3380  date near the middle of that period).
3381
3382* extend: Fixed 2 uninitialised flags (should fix erratic behaviour on
3383  with MS Windows).
3384
3385* extend: Default output name for a file called input.3d is now input_extend.3d
3386  rather than just extend.3d (which was annoying if you wanted to extend
3387  several surveys in the same directory).
3388
3389* aven: OpenGL 2.0 always includes support for point sprites so rework
3390  our check for them to include that knowledge.
3391
3392* aven: Regenerate depth bar if user switches to/from metric units.
3393
3394* aven: Don't clear the "there" mark just because the mouse pointer has
3395  moved off a station.
3396
3397* aven: When processing a .svx file, put the resultant .3d file in the
3398  same directory (since that's where we then try to load it from).
3399
3400* aven: Fix labelling of date colouring on 32 bit platforms.
3401
3402* aven: If "colour by date" is on and we load a survey with no date info
3403  (or all surveyed on the same date) then set "colour by none".
3404
3405* aven: Make the error dialog modal and remove a signal handler once it
3406  has fired to prevent endless (or seemingly endless) cascades of error
3407  dialogs.
3408
3409* aven: Enforce a minimum object volume diameter of 1m to avoid problems
3410  if a survey file with only one station in is loaded.
3411
3412* aven: Fix problems with indicators disappearing when we're drawing
3413  blobs and/or crosses the slow (but always supported) way.  (Problem
3414  introduced in 1.1.6).
3415
3416* (Unix version): aven: Really stop setting extra toolbar margin when using
3417  GTK2.0.  The attempt to fix this in 1.1.3 failed because __WXGTK12__ is
3418  set for GTK+ 1.2 or *any later release* so is true for GTK+ 2.0 too!
3419
3420* (Unix version): aven: Add details of which of wxGTK, wxMotif, and wxX11
3421  we've been compiled with, and which GTK+/Motif version where appropriate.
3422
3423* (Unix version): Fixed build on Fedora Core 3.
3424
3425* documentation: Updates to 3d file format specification from Mike McCombe.
3426
3427Changes in 1.1.6 (2005.10.10):
3428
3429* (MS Windows version): Distribution is about a third smaller than 1.1.5
3430  (mostly because mingwm10.dll is no longer required).
3431
3432* aven: If aven is asked to load a .svx, .dat, or .mak file, run cavern on
3433  it, showing cavern's output in a window (with errors and warnings clickable
3434  to load the offending file into an editor), and then loading the resulting
3435  3d file.
3436
3437* aven: Added "Colour by Date" option.
3438
3439* aven: Disable "Colour by Depth" option if there's no elevation variation.
3440
3441* aven: Don't crash if trying to load a survey with no elevation variation.
3442  Instead turn off depth colouring.
3443
3444* aven: Export as HPGL added.
3445
3446* aven: Improved update of mouse coordinates and measuring line (thanks to
3447  Martin Green).
3448
3449* aven: Show the coordinates of either the mouse pointer or the nearest
3450  survey station to it (if there is one near enough).  Showing both was
3451  confusing and meant the status bar overflowed on smaller displays.
3452
3453* aven: When printing an extended elevation, don't show bearing and elevation.
3454
3455* aven: Don't lock "flat" surveys which aren't extended elevations - a
3456  flat survey with LRUD data isn't flat any more!
3457
3458* aven: When we have to draw blobs and crosses the slow way (because the
3459  graphics hardware doesn't support the fast way), draw them so that they
3460  should appear at the correct depth into the 3D scene instead of on top
3461  of everything else.
3462
3463* aven: Make "play presentation backwards" icon green to match the other
3464  presentation icons.
3465
3466* (MS Windows version): aven: Mouse clicks on the survey view now set the
3467  keyboard focus there.
3468
3469* (MS Windows version): aven: Fix first redraw of a newly loaded survey.
3470
3471* (MS Windows version): aven: Fix redrawing of measuring line.
3472
3473* cavern: Store dates for img_XSECT.
3474
3475* cavern: Fixed small one-off memory leak if you specify -o more than once.
3476
3477* (Unix version): Check environmental variable LC_MESSAGES when deciding what
3478  language to use for messages.
3479
3480* (MS Windows version): "Print" on a 3d file now prints through aven rather
3481  than the separate printer driver (Unix has done this for some time).
3482
3483* Removed old printer drivers.
3484
3485* img library: When creating a 3d file, ignore img_XSECT if we've been asked
3486  to write a file format version which doesn't support it.
3487
3488Changes in 1.1.5 (2005.09.20):
3489
3490* (MS Windows version): aven: Fixed crash on start-up (introduced in 1.1.4).
3491
3492* aven: Make blobs round like they are in Survex 1.0.
3493
3494* aven: If the graphics drivers don't support drawing blobs using OpenGL
3495  point markers, fall back to drawing filled circles.
3496
3497* aven: If the graphics drivers support it, draw crosses as texture mapped
3498  OpenGL point markers which is much faster.
3499
3500* aven: Cross size increased to match Survex 1.0.
3501
3502* aven: We must update which blobs are displayed if display of surface or
3503  underground legs is toggled.
3504
3505* cavern: Fix handling of a *solve followed by survey data, none of which is
3506  attached to the previous data.
3507
3508* cavern: Fixed "No survey data" error when a *solve is followed by another
3509  *solve (or the implicit solve at the end of processing) with no data between
3510  them.
3511
3512Changes in 1.1.4 (2005.09.19):
3513
3514* aven: Added Aven's icon to the "About" dialog.
3515
3516* aven: Use localised character for the decimal point (e.g. "," in most
3517  continental European countries).
3518
3519* aven: Previously the survey tree would get focus and then take keypresses
3520  (e.g. "P", "L", "Delete").  Now we pass most keypresses across so they
3521  operate on the cave, and transfer the input focus across when we do.
3522
3523* aven: Make pressing "Return" in the tree control expand/collapse a subtree.
3524
3525* aven: Speed up intialisation by delaying creation of OpenGL lists until
3526  they're needed.
3527
3528* aven: Added Mark Shinwell's bounding box with shadow of the survey.
3529
3530* aven: Disable the "Tubes" button/menu item when there's no LRUD data.
3531
3532* aven: Reworded "Restore Default Settings" as "Restore Default View".
3533
3534* (Unix version): aven: Set sensible default margins for printing and preserve
3535  any margin values the user specifies between runs (previously margins
3536  defaulted to 0 each time aven was run).
3537
3538* Documentation: Document *DATA PASSAGE in the manual.
3539
3540Changes in 1.1.3 (2005.09.07):
3541
3542* (Microsoft Windows version): Fixed build problems.
3543
3544* cavern: Allow OMIT character (-) for left/right/up/down.
3545
3546* aven: Remove an unnecessary menu separator.
3547
3548* aven: Fix "Find" and "Hide" toolbar buttons to work with GTK2.0.
3549
3550* aven: Make the tooltip for "Hide" show the number of found stations.
3551
3552* aven: If * or ? is used in a glob-style pattern, force a non-substring match.
3553
3554* aven: Enable "New Presentation" when there's a 3d file loaded, rather than
3555  when there's a presentation loaded.
3556
3557* aven: Make entrances green in side panel tree list to match green blobs used
3558  in cave view.
3559
3560* aven: Don't show surface labels if we're not showing surface data, etc.
3561
3562* aven: Merge "Start Rotation" and "Stop Rotation" into "Toggle Rotation" and
3563  make "Space" the key for this.  Keep Return working "Stop Rotation" so
3564  existing users are happy, but don't advertise it.
3565
3566* aven: Normalise filename by adding any extension used, and use the normalised
3567  filename for file history and window title.
3568
3569* (Unix version): aven: Stop setting extra toolbar margin when using GTK2.0
3570  as the toolbar buttons already have a sensible margin - the extra margin is
3571  only needed with GTK1.2.
3572
3573* aven: Fix handling of plumb legs in tube model.
3574
3575* aven: Fixed swapped L and R in tube model.
3576
3577* extend: Preserve UD cross-section information in extended elevation.
3578
3579* extend: Add new messages for John Pybus' enhancements.
3580
3581Changes in 1.1.2 (never formally released):
3582
3583* Added support for LRUD data in .svx files, in .3d files, and aven can
3584  now load and display it on screen and on printouts.  The ability to "fake"
3585  LRUD data in aven is gone for now but will reappear in some form later.
3586
3587* cavern: Removed support for writing Chasm's 3dx format.  We're going to
3588  fold any desirable missing chasm functionality into aven.
3589
3590* aven: Rearranged mouse actions as discussed on the mailing list.  Added
3591  cursors for each different mouse action to help the user learn what each
3592  does.  Also added cursors for the "compass" and "clino" as well as the
3593  scalebar to suggest to the user that they can be dragged to change the view.
3594
3595* (Unix version): aven: Don't segfault if LANG isn't a known language.
3596
3597* tests/smoketest.tst: If X windows is running, check that we can run aven
3598  with --help and --version.
3599
3600* tests/cavern.tst: Fixed cavern.tst to warn if it is skipping a test because
3601  no results are listed for it.  This revealed that there was a "newline" test
3602  which should have been called "badnewline", and was a broken testcase too!
3603  Fixed all these problems.
3604
3605* cavern: Applied Simeon Warner's patch for handling backcompass, backclino,
3606  and omitted forward compass/clino readings in Compass DAT files.  Added
3607  a feature test for this to the testsuite.
3608
3609* It no longer makes sense to have an option not to build aven or to build aven
3610  without OpenGL so remove old machinery for this from configure and the
3611  sources.
3612
3613* (Unix version): configure: Check if "-lXxf86vm" is needed.
3614
3615* configure: Better output for strcasecmp test.
3616
3617* aven: Fix crosses to work much better.  Not a total fix - their position
3618  in the Z buffer isn't correct and they're rather slow to plot.
3619
3620* aven: Don't regenerate the hittest grid every time the mouse moves while
3621  animating, which solves the mysterious pausing effect (thanks go to Martin
3622  Green for spotting this!)  Also clear all the status bar coordinates when
3623  animating.
3624
3625* aven: Sort out clashing menu shortcuts in some languages.
3626
3627* aven: Fixed compilation problem on x86_64
3628
3629* SPUD: Pruned out stuff which has been done or which is not actually relevant
3630  to this branch.
3631
3632* Merge various changes from 1.0 branch:
3633
3634  + aven: Port over "printing from aven" functionality.
3635
3636  + aven: Port over "export as" functionality,
3637
3638  + Add David Loeffler's vim mode for .svx files.
3639
3640* aven: Fix check for whether a label is behind us in perspective view.
3641
3642* aven: Don't use an opengl list for drawing the indicators - we typically make
3643  a new list each time we plot them anyway.
3644
3645* Remove lingering traces of support for RISC OS and pre-386 MSDOS
3646
3647* aven: Set icon on non-Windows platforms too.  This means that with
3648  WindowMaker on Unix you get an icon on the AppIcon by default.
3649
3650* configure: Update wxWindows checks to handle newer wx versions.
3651
3652* Make all maintainer perl scripts "use bytes;" to avoid utf-8 double encoding
3653  problems.  They also all require Perl 5.8 now (hopefully this isn't an issue
3654  for anyone building from CVS).
3655
3656* acinclude.m4: Quote macro name for fix autotools warning.
3657
3658* Documentation: "tilt up" is "'" not ",".
3659
3660* aven: Add support for mousewheels (to tilt the cave).
3661
3662* aven: Fixed twisted transitions to and from pitches in certain cases.
3663
3664* aven: Pick a sensible initial window size when the user's desktop is spread
3665  over more than one monitor (works best with wx2.5 or newer, but try to do
3666  better with wx2.4 or earlier as well).
3667
3668* aven: Initialise GfxCore slightly later to avoid visual glitch from notebook
3669  contents being visible before any survey is loaded.
3670
3671* aven: Allow a coloured texture to be used
3672
3673* aven: Don't initialise until we have data (to the user, this means the window
3674  is default colour (grey for most systems) not black until a survey is
3675  loaded).
3676
3677* aven: Fixed weird "shadowed" icons.
3678
3679Changes in 1.1.1 (2004-10-06):
3680
3681* (Microsoft Windows version): aven: Hopefully fix loading a survey file at
3682  startup.
3683
3684* aven: Delay loading the bitmap for the "About" dialog until it is first
3685  needed.  We want start up to be as quick as possible.
3686
3687Changes between 1.0.32 and 1.1.0 (never formally released):
3688
3689* NOTE: Survex 1.1.X releases are development snapshots made available for
3690  the purposes of allowing wider testing and getting more user feedback.  Once
3691  the code has stabilised the version number will be raised to 1.2.0.
3692
3693* aven: Now uses OpenGL for 3d rendering - you may need to install drivers if
3694  you're using Windows 95 - these can be obtained from:
3695  http://download.microsoft.com/download/win95upg/info/1/W95/EN-US/Opengl95.exe
3696
3697* aven: Solid passages - passage dimensions are currently inferred from
3698  the leg length (pretty effective as you can measure longer legs in
3699  larger passages).  Use of real LRUD data coming soon...
3700
3701* aven: Depth colouring is now continuously varying.
3702
3703* aven: Colour by depth can now be turned off (and there's the start of a
3704  framework for properly implementing colour by date, error, etc).
3705
3706* aven: Find stations moved onto the toolbar and now uses a simple wildcarded
3707  match (? matches any character, * matches any number of characters).
3708
3709* aven: We now use the status bar for coordinates, distances, etc to make
3710  better use of screen space.
3711
3712* aven: Full screen mode (F11).
3713
3714* aven: Perspective view.
3715
3716* aven: Context sensitive cursor shape - needs more work.
3717
3718* aven: Mouse actions changed (hopefully they're now more natural, but
3719  you may find the change disorientating - feedback wanted on this).
3720
3721* aven: Added "presentations" which allow you to set up fly-through paths
3722  and load/save/run them.
3723
3724* aven: A presentation can be exported as a movie file.
3725
3726* aven: Added Save screenshot facility.
3727
3728* aven: Depth fogging option.
3729
3730* aven: Added Smooth Lines option.
3731
3732* aven: Added Textured Walls option.
3733
3734* aven: If a survey has surface legs but no underground legs, default to
3735  showing the surface legs.
3736
3737* cavern: Dates given to *date are now stored in the 3d file.
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