source: git/NEWS @ 222a36b

RELEASE/1.2debug-cidebug-ci-sanitisersfaster-cavernloglog-selectstereo-2025walls-datawalls-data-hanging-as-warningwarn-only-for-hanging-survey
Last change on this file since 222a36b was 66b477f, checked in by Olly Betts <olly@…>, 4 years ago

Update for 1.2.44

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