source: git/NEWS @ 9abbebf

stereo-2025warn-only-for-hanging-survey
Last change on this file since 9abbebf was fa2c485d, checked in by Olly Betts <olly@…>, 13 months ago

NEWS: Update

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1up to: 1a6fddc915448c2fc751fd93d166693f8f022052
2
3Changes in 1.4.9 (2024-06-??):
4
5* aven:
6
7  + We now support showing geodata overlays in Aven.  We use the GDAL library
8    to load the data, so this should work for any format which GDAL supports
9    so long as it can be read from the filing system and is geo-referenced
10    vector data - see https://gdal.org/drivers/vector/index.html for a list.
11    Currently the dialog to select a file defaults to showing GPX, KML, GeoJSON
12    and shape files - set the filter to "All Files" to chose other formats.
13
14  + Reimplement display of cavern output.  The old version turned the log into
15    HTML and displayed it using wxHtmlWindow, but that adds a lot of overhead
16    and is especially inefficient if there are many diagnostics - cavern could
17    finish almost instantly yet aven could take many seconds to process the
18    output.  The new version renders directly from the log data.  It should
19    have most of the features from before - the only missing feature I'm
20    currently aware of is that you can't now select and copy text from the log
21    window, which wxHtmlWindow provided for free.  If people miss this feature,
22    we could add it to the new implementation.
23
24* cavern:
25
26  + Add support for processing Walls format survey data (.SRV and .WPJ files).
27    This support is somewhat experimental but at a point where it seems useful
28    to make it easier for people to try out.  See the manual for a list of
29    known shortcomings.  Thanks to Eric C. Landgraf for a lot of testing and
30    encouragement.
31
32  + *entrance now suppresses "Unused fixed point" warning.  This warning is
33    intended to catch typos, which is much less likely for a station named
34    twice.  It's also reasonable to use only *fix and *entrance on a station at
35    the entrance of an unsurveyed cave.
36
37  + Highlight plumbed clino readings fully in diagnostics.  Now the full reading
38    is highlighted instead of just the first character.
39
40  + Report location of previous fix after "already fixed" error/warning.
41
42  + Use "info" diagnostic category for "Originally entered here" message.  This
43    is more logical as the original *begin isn't something to be warned about,
44    only the reentering is.  This was only a warning before because we didn't
45    used to have "info" diagnostics.
46
47  + Use "info" diagnostic category for message about not reporting further
48    uses of a deprecated feature.  Previously this was a warning, but the newer
49    "info" category is more appropriate here.
50
51  + The message about inventing a fixed point is now an "info" diagnostic which
52    allows us to report a location which is where that station is defined,
53    which may be useful to the user.
54
55  + Make highlighting position in error reporting more robust.  We no longer
56    try to highIight if we calculate a negative column offset, when previously
57    we would print billions of spaces.  As far as I know this has never
58    happened in a released version.
59
60* manual:
61
62  + (Microsoft Windows version): Update information about installation
63    with/without admin rights.
64
65  + Mention Compass, Walls and CMAP support in the importing data howto
66    section.
67
68  + Drop mention of Rosetta Stal from the manual.  The referred to link from
69    our website was removed in 2015 because Rosetta Stal hadn't been updated
70    for 13.5 years at that point.  Now the domain it was available from has
71    lapsed and is a domain squatter "for sale" page.
72
73* img library:
74
75  + The coordinates in CMAP data are in feet but we were dividing rather
76    than multiplying by the conversion factor to get metres so all
77    coordinates were about 10.76 times too large.
78
79* Build system:
80
81  + The GDAL library is now required to build Survex.
82
83Changes in 1.4.8 (2024-04-23):
84
85* cavern:
86
87  + The warning for a compass reading on a plumbed leg was already suppressed
88    for a compass or backcompass reading of 0, but is now also suppressed for a
89    backcompass of 180° (or equivalent) which seems to be common in some Compass
90    datasets, but also seems sensible generally.  Thanks to Simeon Warner for
91    sharing some data which triggered such warnings.
92
93  + The error for when a survey and station use the same name is now also
94    emitted in the case where a name was used first for a station, and then as
95    a survey on an explicitly prefixed name.  Closes
96    https://github.com/ojwb/survex/pull/4, reported by Thomas Holder.
97
98  + The error for when a survey and station use the same name now highlights
99    the problematic name within the line shown for context.
100
101  + Fix the reported token string reported by some errors with readings.  This
102    happened to work on at least x86-64 Linux, but the code was invalid and
103    failed on some architectures.
104
105* Fix to build with newer FFmpeg versions.
106
107* (Microsoft Windows version): The installer now offers the choice to install
108  for just the current user, which allows installing Survex without admin
109  rights.
110
111* (Microsoft Windows version): Fix problems with valid coordinate systems being
112  rejected and aven's cavern log window not showing output.  Reported by
113  Peter Mašič, Špela Borko, Răzvan Dumbravă and detrito.  Thanks especially to
114  Špela Borko for a lot of testing to help track down the cause.
115
116Changes in 1.4.7 (2024-04-07):
117
118* cavern:
119
120  + When using *declination auto we report the range of calculated declinations
121    for each location specified.  After doing this we now reset the range
122    information we're tracking.  Previously we'd misreport the range for
123    the second and subsequent locations.
124
125  + Avoid undefined behaviour on handling filename fallback for filenames
126    containing non-ASCII characters.
127
128  + Show context line with relevant item highlighted for more errors and
129    warnings.
130
131  + The dynamic string handling routines are now more efficient.
132
133  + Fix memory leak if a Compass MAK file opens folders it doesn't close.
134
135  + Fix handling of clino-less legs in Compass DAT.  These would cause cavern
136    to fail with a lot of "NaN" messages.  Now they're treated as having a zero
137    clino with a standard deviation based on the leg length, just like in .svx
138    files.
139
140* img library:
141
142  + Compass PLT: Treat LRUD readings > 900 as omitted readings, which matches
143    what Compass does.  Thanks to Larry Fish for clarifying this.
144
145  + Avoid undefined behaviour after realloc().  We were adjusting a pointer
146    within the reallocated block by subtracting the old block address and
147    adding on the new one.  Technically this is undefined behaviour, although
148    in practice it seems likely it'll work and we've not seen misbehaviour due
149    to it.  However it's easy to avoid by calculating the offset before the
150    realloc().
151
152* Portability:
153
154  + Provide prototype for getopt() to avoid warnings with very recent compiler
155    versions.
156
157  + Avoid using sprintf(), which now triggers warnings on some platforms.
158
159* Build system:
160
161  + Add configure --enable-werror option to turn compiler warnings into errors.
162
163* Manual:
164
165  + Expand details of Compass MAK CRS support.
166
167  + Replace very out of date information about binary RPM packages.
168
169* Minor translation updates.
170
171* (Microsoft Windows version): Now uses PROJ 9.3.0 and ships all of the
172  ancillary files that PROJ comes with.  Hoping this fixes use of coordinate
173  system EPSG:3912 failing, which was reported by Peter Mašič but I've not
174  managed to reproduce.
175
176Changes in 1.4.6 (2024-03-07):
177
178* cavern:
179
180  + Workaround bug in PROJ < 9.3.0 with projected coordinate systems with
181    northing/easting axis order (such as EPSG:3042) which results in the grid
182    convergence being wrong by about 90°.  Reported by Patrick Warren on the
183    mailing list.
184
185  + If *declination auto was used before *cs out we would incorrectly calculate
186    the grid convergence as 0.  We now handle this case correctly by
187    calculating lazily when we first read a compass reading, and report an
188    error if the output coordinate system hasn't been set by then.
189
190  + When opening a file, cavern has fallback handling if the file isn't found
191    to help people processing datasets from platforms with case-insensitive
192    file systems.  Previously cavern would fold the filename to lowercase and
193    retry.  Now if this fails, it will also try the lower case version but
194    with the initial character of the leaf in upper case, and finally folding
195    the whole specified filename to upper case.
196
197  + Dynamically pick a suitable level separator character and store it in .3d
198    file, instead of it being hard-coded to '.' (we still use '.' unless it
199    has been *set as a "name" character, or for Compass DAT/MAK files unless it
200    has been used in a station name).  This is a step towards addressing the
201    situations raised by Thomas Holder in https://github.com/ojwb/survex/pull/4
202    and https://github.com/ojwb/survex/pull/5 .
203
204  + Compass DAT files:
205
206    - The shot flag S is now understood to indicate a splay.
207
208    - The shot flag P is now interpreted as marking surface data.  This flag
209      is described as "Exclude this shot from plotting", but the use suggested
210      in the Compass docs is for surface data, and legs flagged with it "[do]
211      not support passage modeling".  Even if it's actually being used for a
212      different purpose, Survex programs don't show surface legs by default so
213      the end effect is at least to not plot as intended.
214
215    - Surveys which indicate a depth gauge was used for azimuth readings are
216      now marked as STYLE_DIVING in the 3d file.
217
218    - Compass and clino corrections are now implemented for backsights.
219
220    - The tape correction in Compass DAT files is now handled correctly.  The
221      specified value is in feet, but cavern was incorrectly treating it as
222      being in metres.
223
224    - We now handle the newer 15 character "FORMAT:" encoding.  Previously
225      cavern wouldn't detect when there were backsights in this case.
226
227    - We now treat survey date January 1st 1901 as "no date specified" since
228      this is the date Compass stores in this situation, and it seems very
229      unlikely to occur in real data.
230
231    - In Compass DAT files a dummy zero-length leg from a station to itself is
232      used to provide a place to specify LRUD for the start or end of a
233      traverse (depending if dimensions are measured at the from or to
234      station), and so we no longer issue a warning about equating a station to
235      itself for DAT files.
236
237  + Compass MAK files:
238
239    - The base location command is now understood.  This is how Compass
240      specifies a location to calculate magnetic declination at, and we
241      now handle this like Survex's native "*declination auto X Y Z".
242
243    - Survex uses the specified UTM zone and datum provided the combination can
244      be expressed as an EPSG code (lack of any EPSG codes for a datum suggests
245      it's obsolete; lack of a code for a particular datum+zone combination
246      suggests the zone is outside of the defined area of use of the datum).
247      Example Compass files we've seen use "North American 1927" outside of
248      where it's defined for use, presumably because some users fail to change
249      the datum from Compass' default.  To enable reading such files we return
250      a PROJ4 string of the form "+proj=utm ..." for "North American 1927" and
251      "North American 1983" for UTM zones which don't have an EPSG code.
252      Please let us know if support for additional cases which aren't currently
253      supported would be useful to you.
254
255    - Folder commands are now understood.
256
257    - Flag fixed stations as entrances.  Experimentation with Compass shows
258      this is how it treats them ("distance from entrance" in a .DAT file
259      counts from 0 at these points).
260
261  + We now support reading Compass CLP files.  These are very like DAT files,
262    except they contain loop-closed data.  You might find this useful if you
263    want to keep existing stations at the same adjusted positions Compass gave
264    (for example to be able to draw extensions on an existing drawn-up survey),
265    or if the original DAT file has been lost but you still have the CLP file.
266
267* aven:
268
269  + Fix OpenGL scaling on high DPI displays with wxWidgets 3.0. Reported by
270    Philip Balister.
271
272  + Split the filters for DAT and MAK files in the File->Open drop down list.
273    It seems more likely you'd want to see one type or the other, not both
274    together.
275
276* aven/survexport:
277
278  + Fix survey filtering when reading Compass PLT files.
279
280  + .json,.kml: Enable export of surface legs.  Currently surface and
281    underground legs aren't differentiated in these export formats when both
282    are enabled.
283
284  + .3d: The coordinate system is now set.
285
286  + .svg: Equated stations now get their correct names in the id attribute
287    of <circle> tags.  Previously one of the names would be repeated for
288    all of a set of equated stations.
289
290  + .plt:
291
292    - Anonymous stations previously resulted in an empty name in the PLT
293      file.  This isn't explicitly disallowed by the PLT format description,
294      but Compass' viewer gives an error for such lines.  Now we invent names
295      by encoding the station coordinates which should be unique.
296
297    - The S shot flag is now set for splays, and the P shot flag (hide from
298      plotting) is set for surface legs (which matches the use suggested in the
299      Compass docs).
300
301* img library:
302
303  + Fix bug handling timestamps before 1970.  In C signed integer division
304    rounds towards zero, which previously resulted in timestamps before 1970
305    getting rounded to the end of the day instead of the start when converting
306    them to a count of days so they'd be off by one day unless the time was
307    midnight.  This affected reading v3-v7 format 3d files with IMG_API_VERSION
308    set to 1 and writing v8 format 3d files with IMG_API_VERSION set to 0 (the
309    default).
310
311  + Improve Compass PLT support (many of these are Compass features added
312    since Survex's support for Compass was originally added):
313
314    - Survey dates are now handled fully.  We treat survey date January 1st
315      1901 as "no date specified" since this is the date Compass stores in this
316      situation, and it seems very unlikely to occur in real data.
317
318    - LRUD data is now translated to img_XSECT and img_XSECT_END.
319
320    - We now infer img_SFLAG_ENTRANCE for stations where the "Distance From
321      Entrance" field is present and zero.
322
323    - The shot flag L is now translated to img_FLAG_DUPLICATE.
324
325    - The shot flag S is now translated to img_FLAG_SPLAY.  A station at the
326      far end of a shot flagged S gets img_SFLAG_WALL set since the Compass PLT
327      format specification says:
328
329          The shot is a "splay" shot, which is a shot from a station to the
330          wall to define the passage shape.
331
332    - The shot flag P is now interpreted as marking surface data.  This flag
333      is described as "Exclude this shot from plotting", but the use suggested
334      in the Compass docs is for surface data, and legs flagged with it "[do]
335      not support passage modeling".  Even if it's actually being used for a
336      different purpose, Survex programs don't show surface legs by default so
337      the end effect is at least to not plot as intended.
338
339    - The d plot command is now supported (previously img failed to parse
340      PLT files using this command) - it's like D but implies the P shot flag.
341
342    - If a PLT file only uses one datum and it is "WGS 1984" then the UTM zone
343      is converted to the appropriate EPSG code and this is reported as the
344      coordinate system.  Other datums could be handled, but the mapping to
345      EPSG code is less simple.  Also it seems Compass supports at least
346      24 datums but it doesn't document all the strings it uses for them.
347      Files with multiple datums could be handled too, but we'd need to convert
348      coordinates to a common coordinate system in the img library, which would
349      need it to depend on PROJ.  Please let us know if support for more and/or
350      mixed datums would be useful to you.
351
352    - Duplicate img_LABEL items are no longer returned - this used to happen
353      for stations where more than two shots met within a single survey.
354
355    - We now infer img_SFLAG_EXPORTED for any station that appears in more
356      than one survey in the PLT file.
357
358    - We now set flag img_SFLAG_FIXED for any station which is listed as
359      a fixed point in the PLT file.
360
361    - If there's only one non-empty section name in a PLT file and we aren't
362      filtering by survey, we now report that section name as the title.  If
363      there are multiple different non-empty section names, we still report the
364      basename of the file as before.  If we're filtering by survey, we report
365      the comment for that survey as before.
366
367    - Fix bug handling PLT with omitted LRUD.  The format specification
368      documents that LRUD may be omitted, though it seems Compass never
369      actually omits it and at least some versions of Compass failed to handle
370      it being omitted too.
371
372* (Microsoft Windows version): Now using wxWidgets 3.2.4 (was 3.1.6).
373
374* manual:
375
376  + Document Compass support in detail.
377
378  + Improve NATO mils example.
379
380* INSTALL:
381
382  + Add a link to the instructions for building from git.  Reported by Andrew
383    Northall in https://github.com/ojwb/survex/pull/13
384
385  + Document the requirement for a C99 compiler for building from source.
386    We made this a requirement in 1.4.2, but only noted it in NEWS.
387
388* doc/TODO.htm: Update.
389
390* Replace references to "libav" with "FFmpeg" since the libav project seems to
391  now be defunct, and we've always supported using either.
392
393* Update build system to eliminate use of obsolete autotools macros and drop
394  probes for features that we can safely assume now we require a C99 compiler
395  and workarounds for obsolete platforms.
396
397* Fix compilation warnings from newer compiler versions.
398
399Changes in 1.4.5 (2023-06-29):
400
401* aven: Fix rendering of crosses when drawn as sprites.  Reported by echarlie.
402
403* (macOS version): aven: Fix crash in export dialog.  Fixes #133, reported by
404  rixyane.  Thanks to Wookey for testing.
405
406* manual: Expand docs on connecting to Compass data.
407
408* Minor translation updates.
409
410Changes in 1.4.4 (2023-02-03):
411
412* aven: Fix red line in clino background to be grey (this was introduced in
413  1.4.3 and was a debugging change accidentally left in).
414
415* aven: Accept weird .3d files from Therion which have empty components in
416  station names.  That's not really valid by Survex's definition of station
417  names, but it's not very helpful to reject such files, so just disable the
418  checks that were rejecting this.
419
420  The result is empty entries in the survey tree, but I don't see what we can
421  really do that's better than that.
422
423  Reported by Vasily Vl. Suhachev.
424
425* aven: Make it more obvious you can enter a custom scale by adding a "..."
426  entry to the scale combobox - selecting this clears the value and gives focus
427  to the combo box text entry. This control has always supported clicking to
428  enter a custom scale, but there wasn't really any indication that this was
429  possible before.  Partly addresses #132, reported by Eric C. Landgraf.
430
431* aven: Force export window to resize when the export format is changed as
432  different controls are shown depending on the export format.
433
434* aven: Right-align tilt spin control value in print/export dialog to match the
435  bearing spin control.
436
437* aven,survexport: Add ability to export as Survex 3d which is useful as you
438  can filter to a subset of surveys, filter out splays, convert from other
439  formats the img library can read, etc.  This feature is a bit rough and ready
440  currently but please report issues.
441
442* dump3d: Add --legs option which converts MOVE and LINE to a single LEG line
443  per leg with the from and to coordinates.  Tools which parse dump3d output
444  should find this easier to process as it avoids having to track a "current
445  position".
446
447* Update manual to have a complete list of quantities which *calibrate accepts.
448  Reported by echarlie
449
450* cavern.tst: Fix testsuite to work with SOURCE_DATE_EPOCH set.
451
452Changes in 1.4.3 (2022-05-17):
453
454* aven: Much improved support for HiDPI monitors on all platforms.
455
456* aven: When started without a file make sure the window has focus so menu
457  accelerators and shortcuts work without clicking on the window.
458
459* aven,survexport: DXF export now puts splays in a separate layer and uses a
460  dotted linetype for them.  Patch from echarlie, see #60.
461
462* Improved survexport man page to include command line options and a short
463  note about DXF export.  Patch from echarlie.
464
465* Minor translation updates.
466
467* (Unix version): aven: Fix handling of EGL-based wxGLCanvas (which wxGTK 3.1.5
468  has).  Fix a build failure and don't force X11 (as the EGL-based wxGLCanvas
469  works on Wayland).
470
471* (MacOS version): aven: Fix hang on startup without a file.  Fixes #120,
472  reported by Enrico Fratnik.
473
474* (Microsoft Windows version): Now using wxWidgets 3.1.6 (was 3.0.5).
475
476* img library: Support reproducible builds which create .3d files by not
477  embedding a timestamp if environment variable SOURCE_DATE_EPOCH is set.
478  Requested by Martin Budaj.
479
480Changes in 1.4.2 (2022-02-25):
481
482* aven: Fix to be compatible with FFmpeg 5.0.
483
484* Improve docs for *cs and *declination.
485
486* cavern: Fix "*declination auto" not to crash when built with PROJ < 8.1.0.
487  Bug introduced in 1.4.0.
488
489* cavern: For each `*declination auto` command cavern now reports an "info"
490  message showing the range of calculated declination values and the dates at
491  which the ends of the range were obtained, and also the grid convergence
492  (which doesn't vary with time).  Fixes #92, reported by Rob Eavis.
493
494* cavern: If any of the N-S, E-W or U-D ranges includes an anonymous station
495  then also report the range in that direction excluding anonymous stations.
496  Patch from Thomas Holder.
497
498* cavern: The error from a bad `*cs custom` command now highlights the quoted
499  string properly.
500
501* cavern: "FIX command with no coordinates - fixing at (0,0,0)" is now an
502  "info" rather than a "warning".  It's not really reporting a problem and the
503  ability to omit the coordinates is a deliberate feature.  It is useful for
504  the user to know where the "*fix" without coordinates is if they want to
505  change the survey to be in real coordinates, so an "info" diagnostic is a
506  good fit.  This also means aven will no longer stay on the log view after
507  processing a dataset which fixes without coordinates.
508
509* cavern: If "*fix" is used twice with no coordinates we no longer say
510  "FIX command with no coordinates - fixing at (0,0,0)" right before:
511
512  error: Already had FIX command with no coordinates for station "x"
513
514* cavern: Include errors in Compass .mak files now report the error in the line
515  where the included filename is actually specified.
516
517* cavern.tst: Add test coverage for warnings for *entrance and *export with
518  a station which doesn't exist otherwise.
519
520* aven/survexport: Change JSON export to be valid JSON.  This means the output
521  has changed incompatibly, but it wasn't valid JSON before which suggests
522  nobody was actually successfully using it. Fixes #128, reported by Pawczak.
523
524* aven.tst: Skip one testcase on macos as it seems to hang, at least when
525  running on the Continuous Integration system.
526
527* (Microsoft Windows version): The installer is now generated with a much
528  newer version of Innosetup.  This means Microsoft Windows Vista is now the
529  minimum supported version but 2000 and XP are both many years out of support
530  anyway.
531
532* (Microsoft Windows version): The coordinate system database for PROJ is
533  now included so "*cs" now works (broken since 1.4.0).
534
535* Chinese translation updates from Qingqing Li.
536
537* Building from source now requires a compiler with support for C99.  C99
538  seems to be universally supported by compilers now so we don't expect this to
539  inconvenience anyone.
540
541Changes in 1.4.1 (2021-11-08):
542
543* This release should work with any PROJ version >= 6.2.0.
544
545* cavern.tst: Fix to actually run tests when building outside the source
546  tree.  Previously files for testcases weren't found, and tests were skipped
547  with a warning, which lead to 1.4.0 being released with two failing testcase.
548  Fix to find the files, and make not finding them an error.
549
550* cavern.tst: Fix testcases gpxexport and require_fail which were failing
551  in 1.4.0.
552
553* 3dformat.htm: Document that coordinate system can be ESRI:<number>.
554
555Changes in 1.4.0 (2021-11-06):
556
557* New release series to mark that Survex now uses the new PROJ API, and
558  requires PROJ >= 7.2.0.  Survex 1.2.x will continue to support PROJ < 8
559  (and won't support newer PROJ versions).  Fixes #102, reported by Bas
560  Couwenberg.
561
562  Due to these changes, PROJ will now convert directly between coordinate
563  systems where it knows how to, instead of always converting via WGS84.
564  This means conversions may now be more accurate in some cases, and you may
565  notice station coordinates changing - these should be for the better.
566
567  Also, the vertical datum is now taken into account automatically, and
568  terrain data now aligns much better vertically with surveys.  Fixes #56.
569
570* aven: Clicking and holding the left mouse button on the compass or clino,
571  then (while still holding) clicking the right button no longer causes a
572  wxWidgets assertion to fail.  Reported by echarlie.
573
574* img library: Rewrite certain proj strings when reading 3d files for
575  better compatibility with newer PROJ versions, where use of proj
576  strings is strongly discouraged.
577
578  `+init=epsg:` followed by a code number is rewritten to `EPSG:`.
579
580  `+init=esri:` followed by a code number is rewritten to `ESRI:`.
581
582  The proj strings which cavern used to put in 3d files for UTM zones and
583  S-MERC are rewritten to `EPSG:` follow by the appropriate code number.
584
585* Also install survex.lang for gtksourceview 4. Fixes #125, reported by Martin
586  Green.
587
588* Fix missing data style in interleaved example in manual.  Reported by
589  echarlie.
590
591* Use jw from docbook-utils instead of sgmltools-lite to process the manual.
592  The sgmltools-lite homepage says it's no longer being developed, and suggests
593  docbook-tools (which Debian packages as docbook-utils) as a replacement.
594
595* doc/HACKING.htm: Update Debian packages to install
596
597* doc/HACKING.htm: Update details of setting up mingw cross-build environment.
598
599* Add simple tests for GPX and KML export.
600
601* Expand cavern testcase csbad.
602
603* cavern.tst: Parse warning/error counts more robustly.  Previously we'd get
604  confused if the final line just contained an integer, e.g. if we end listing
605  stations not attached to a fixed point.
606
607Changes in 1.2.45 (2021-03-09):
608
609* Avoid undefined signed shifts in 3d file handling.  Survex itself is only
610  affected on big-endian platforms (so most Linux machine, Microsoft Windows,
611  and current Macs are all OK), but this also affects the img library on all
612  platforms when used in standalone mode as it is in other programs.  Fixes
613  #119, reported by Matěj Plch.
614
615* aven:
616
617  + When reading cavern output for the log window, we need special handling
618    for the case when a chunk of output ends mid-way through a UTF-8
619    sequence.  Previously we lost the first byte of the sequence in this
620    case (and would then show it as an invalid character), but now it is
621    handled correctly.  In practice, most of the cavern log output is ASCII so
622    it's quite possible nobody's ever actually hit this.
623
624* testsuite:
625
626  + Suppress reports of leaks on exit from the LeakSanitiser debugging tool.
627    We know we don't release all memory explicitly on exit since doing so would
628    mean extra work for no reason as the OS reclaims all memory when the
629    process exits.
630
631* Convert OLDNEWS encoding from ISO-8859-1 to UTF-8.
632
633Changes in 1.2.44 (2021-02-10):
634
635* aven:
636
637  + (Microsoft Windows version): Now using wxWidgets 3.0.5 (was 3.0.4).
638
639* cavern:
640
641  * Add support for quadrant bearings (e.g. N30E).  Patch from echarlie.
642
643  * Report error if angle units are specified for passage dimension.
644    Previously "*units left degrees" and similar were incorrectly quietly
645    accepted.  Spotted by echarlie.
646
647  * Fix *data with no parameters to keep the current style and reset any state
648    as documented.  Previously it actually instead ignored any survey data
649    until the next *data command with parameters.
650
651  * Fix minor memory leak in *data.  We leaked a single memory allocation on
652    "*data default" or an invalid *data command.
653
654  * Improve test coverage.
655
656* survexport:
657
658  * The check for whether a format supported --elevation, --plan, --bearing and
659    --tilt was inverted.  Reported by echarlie.
660
661  * Fix reporting of export errors on Microsoft Windows.  Reported by Matic Di
662    Batista.
663
664* img library: Fix img_open() when used in other programs.  Patch from Thomas
665  Holder.
666
667* configure: Add wx-config-gtk3 to WX_CONFIG search for Arch Linux.  Patch
668  from Thomas Holder.
669
670* Improve documentation of interleaved data.  Most notably, we now document
671  that a blank line breaks the current traverse.
672
673* Fix typo in manual ('cypolar' -> 'cylpolar').  Patch from Wookey, fixes #117.
674
675* Chinese translation updates from Qingqing Li.
676
677* Russian translation updates from Vasily Vl. Suhachev.
678
679* French translation updates from Jean-Marc and from Wassil Janssen.
680
681* Bulgarian translation updates from Wassil Janssen
682
683Changes in 1.2.43 (2020-02-28):
684
685* cavern: Update to use v13 of the IGRF model for calculating declinations.
686  This was issued in December 2019 and should give slightly more accurate
687  declinations for surveys made since 2010.
688
689* aven:
690
691  + Fix colouring of "not in loop" when colouring by error.  1.2.42 introduced
692    a bug where surveys not in a loop were coloured as if they had zero error.
693    Fixes #111, reported by Bruce Mutton.
694
695  + Fix handling of grid in export.  The grid was always getting enabled
696    (probably since 1.2.8) even for formats which don't support exporting with
697    a grid.  This resulted in the bounding box being set wrongly for some
698    formats such as SVG, as reported by Richard Knapp on the mailing list.
699
700  + When showing errors processing the survey data we'd previously crash if
701    cavern incorrectly reported an error as being in a column off the end of
702    the line - now we just ignore the error column in this case.
703
704  + Support colouring by survey style ("normal", "diving", "nosurvey", etc).
705
706Changes in 1.2.42 (2019-09-04):
707
708* aven:
709
710  + Allow colouring by horizontal or vertical error.
711
712  + (Unix version): Disable scaling for HiDPI displays with GTK3.  The OpenGL
713    code needs work before this will work usefully, so just disable for now
714    (which simulates how things are when using GTK2).
715
716  + (Unix version): Fix orientation of notebook tabs when build with wxWidgets
717    3.1 development versions.  We want horizontal tab orientation, but were
718    passing a weird flag combination which now results in vertical tab
719    orientation.
720
721* When exporting to a format where we support rotation in the horizontal
722  plane (such as SVG), the rotation was incorrectly applied to cross section
723  data (except for the default rotation of zero).  Fixes #108, reported by
724  Richard Knapp.
725
726* Add a section to the manual covering the command line tools, and what you
727  might still need to use them for.
728
729* Fix compiler warning when building from source with GCC 9.
730
731* Consistently refer to macOS not OS X - Apple have renamed it yet again.
732
733* (macOS version): Revert the workaround for the crash on macOS 10.14.  The
734  bug we were working around is fixed in git ready for wxWidgets 3.0.5 and
735  there's a backported fix in the homebrew wxmac 3.0.4-2 package, which is how
736  we now recommend people install on a Mac.  Closes #101, reported by floho.
737
738* (macOS version): Remove buildmacosx.sh script since installing from homebrew
739  is now the recommended approach.
740
741Changes in 1.2.41 (2019-07-10):
742
743* aven:
744
745  + (Microsoft Windows version): Fix error on startup in the pre-built version
746    of 1.2.39 and 1.2.40.  This is a recurrence of the same issue as affected
747    1.2.33 - this time I've patched out the unnecessary check in wxWidgets
748    which causes this problem so it shouldn't recur again.  Reported by
749    Brian Clipstone.
750
751  + (macOS version): Add work around for crash on macOS 10.14 (not fully tested
752    as I don't have access to a Mac).  Hopefully fixed #101, reported by floho.
753
754Changes in 1.2.40 (2019-07-04):
755
756* aven: Draw the measuring line ring with an even shape.  Previously the exact
757  shape of the ring varied slightly depending on the exact coordinates, which
758  could be visually distracting once you noticed it.
759
760* We were casting a function pointer with a bool return type to the same type
761  but with a void return type.  In practice this probably works fine on most
762  platforms, but it's undefined behaviour and also gives a compiler warning
763  with some compilers.
764
765* Fix bug introduce in 1.2.39 with where the "esri" data file for PROJ is
766  installed.
767
768Changes in 1.2.39 (2019-06-29):
769
770* Support versions 5.x and 6.x of the PROJ library we use for handling
771  conversions between coordinate systems.  Reported by Bas Couwenberg
772  in #102, by Richard Knapp in #103 and by Martin Sluka in email.
773
774* (Unix and Mac OS versions): When checking if something is a file or if it is
775  a directory, we no longer treat a symlink as being neither, but instead
776  return an answer based on what the symlink points to.
777
778* aven:
779
780  + Improve handling of hidden splay ends.  Previously, hidden splay ends still
781    served as "targets" for snapping the mouse pointer to, and still got
782    crosses when crosses were enabled.  We don't have a handy flag for "this is
783    the outer end of a splay" and computing that on demand isn't so easy to do,
784    so for now we use the "anonymous station" flag so at least these cases now
785    behave properly for splays to anonymous stations (which is likely to be
786    what people with huge numbers of splays from disto-x, etc are using).  This
787    does mean that anonymous stations on continuation passages will incorrectly
788    also be off when splays are hidden, but that seems an OK trade-off for now
789    and a definite improvement over the previous situation.  The snapping of
790    the mouse pointer was reported by Frank Tully in #105.
791
792  + Fix typo in export UI (CVS should be CSV).
793
794* Documentation:
795
796  + Add CSV to documented list of survexport output formats.
797
798  + Fix *declination syntax synopsis - "auto" is a literal string, not a
799    placeholder.
800
801  + Update PROJ project name and website - the name is now "PROJ" (all caps and
802    no ".4" suffix) and the website is now: https://proj.org/
803
804* Install gtksourceview-3.0 language file so .svx files now get syntax
805  highlighting in gedit and other GtkSourceView-based editors.  Patch
806  from Philip Withnall.  Fixes #98.
807
808* (Microsoft Windows version): The Survex installer doesn't uninstall the old
809  version when you upgrade, but just overwrites it with the new version.  In
810  1.2.35 cad3d.exe was replaced with survexport.exe, but a user upgrading from
811  an older version would still have cad3d.exe from that old version.  We now
812  remove any old cad3d.exe left over from a previous install in the same
813  location to avoid confusion.
814
815* Add a few more message translations.
816
817* Fix warnings when built with a C++11 compiler.
818
819Changes in 1.2.38 (2019-03-02):
820
821* cavern:
822
823  + Deprecate MILS as angular units.  Survex has long support MILS as an alias
824    for GRADS.  However, this seems to be a bogus definition of a "mil" which
825    is unique to Survex (except that Therion has since copied it) - there are
826    several different definitions of a "mil" but they vary from 6000 to 6400 in
827    a full circle, not 400.  Reported by Andy Edwards.
828
829  + Fix segfault for *include "".  This isn't useful, but shouldn't crash.  It
830    now reports "file not found" instead.
831
832  + Use isnan() to check for not-a-number.  This is cleaner, more robust and
833    more efficient than formatting the number as a string and checking for
834    "NaN" or "nan" in the result.
835
836* Avoid unused variable warning when compiling from source with modern ffmpeg.
837
838* Drop support for wxWidgets < 3.0.  3.0.0 was released over 5 years ago and
839  should be easily available everywhere by now.  I'm no longer easily able to
840  test with wxWidgets 2.8, and this allows a significant amount of cruft to be
841  removed.
842
843* (Linux version): survex.spec: Fedora have removed gcc from the default build
844  environment so need to explicitly list it in the BuildRequires tag.  See
845  https://fedoraproject.org/wiki/Changes/Remove_GCC_from_BuildRoot for more
846  information.  Patch from James Begley.
847
848Changes in 1.2.37 (2018-11-18):
849
850* aven:
851
852  + Add basic "Colour by Survey" feature.  The colours used aren't currently
853    controllable.
854
855  + Fix export of splays.  Patch from Thomas Holder.
856
857  + Fix KML export to avoid invalid geometry when a tube intersects itself.
858    Patch from Robert Jones.
859
860  + (Unix version): Fix to work under Wayland by forcing the x11 GDK backend
861    for now.  This is a workaround until wxWidgets OpenGL support is updated
862    to work under Wayland.  Reported by Philip Balister.
863
864  + Fix warnings about using deprecated functions when building movie export
865    code using FFmpeg 4.0.
866
867* cavern:
868
869  + Compass MAK files: Handle fixed point coordinates in feet - previously the
870    units were ignored and the coordinates assumed to be in metres.
871
872  + Previously the first byte in a MAK file was ignored.  Typically MAK files
873    start with a comment, and since cavern currently ignores lines that start
874    with characters it doesn't understand the meaning of, this bug would often
875    go unnoticed.
876
877* survexport:
878
879  + Fix exporting of passages, walls and cross-sections by running the code
880    aven uses to decide how much to rotate each cross-section.  Previously all
881    cross-sections were aligned West-East.  Reported by Robert Jones.
882
883  + Default to .pos output if the program name is 3dtopos, and install a second
884    copy (or hardlink under Unix) as 3dtopos.  This provides compatibility with
885    current releases of Tunnel.  Reported by Becka Lawson, Wookey and
886    Stephen Crabtree.
887
888* Fix some German translations.  Patch from Thomas Holder.
889
890* (MacOS X version): Fix aven-create-app to not delete converted icons.
891  Typo spotted by Robert Jones.
892
893* Improve documentation for *team.  Document the requirement to quote names
894  unless a person is identified by just one name.  Document that the roles are
895  optional, as that information may not have been recorded, and to align with
896  therion's team command.
897
898Changes in 1.2.36 (2018-07-18):
899
900* aven:
901
902  + Add support for exporting as a CSV (Comma-Separated Values) file.
903
904  + Support exporting KML with altitude mode "clamp to ground".  In this mode,
905    the altitude in the data is ignored and it's rendered on the surface of the
906    terrain.  This is useful if your KML viewer renders the terrain as opaque
907    so underground data isn't visible.  Rendering cave passages on the surface
908    isn't great, but is better than not being able to see them at all.  This
909    option may also be helpful if you want to see where to look on the surface
910    for new entrances.
911
912  + Highlight surveys with a white loop as the mouse is moved over them in
913    the survey tree.  This is akin to how we highlight a station with a
914    white ring, and allows restoring "double-click survey in tree to zoom"
915    which temporarily required a quadruple-click in 1.2.35.
916
917  + Only show checkboxes in the survey tree for surveys not stations.
918
919  + Fix wxWidgets assertion if the user tried to select additional surveys
920    to show via the right-click menu.
921
922  + Fix multiple survey filtering when both a parent and child survey are
923    selected.  In this case it makes most sense to show all child surveys of
924    the parent, but we actually showed a slightly arbitrary subset of the
925    child surveys of the parent.
926
927  + The checkbox area in the survey tree is now included in the area which
928    is considered by mouse-over updates such as highlighting the station or
929    survey.
930
931  + Fix display of double quotes in cavern log window (they were being replaced
932    with control character 0x16 due to a typo in the code).
933
934  + Add shortcuts to buttons in cavern log window.
935
936  + Eliminate use of gluErrorString() function which eliminates some
937    deprecation warnings when building on macOS.
938
939  + Reject multiple --survey command line options for now (only the last has
940    been used for a long time, but now we actually support multiple survey
941    filtering this matters more).
942
943* survexport:
944
945  + Report a useful error when trying to convert a .3d file without coordinate
946    system information to GPS.  Reported by Mark Shinwell.
947
948  + Handle multiple redundant --survey command line options correctly.
949
950* dump3d: Report station flag "WALL", which was added in 1.2.7.
951
952* Minor translation updates.
953
954* Update manual for Microsoft Windows changes.
955
956* tests/: Add test coverage for warnings about suspect readings
957
958* Fix warning when compiling with clang.
959
960Changes in 1.2.35 (2018-07-03):
961
962* aven:
963
964  + Viewing can now be restricted to multiple surveys.  Use the right-button
965    menu on a survey in the survey tree and select "Show" to enable checkboxes
966    for that survey and all its siblings.  Only the selected surveys are shown
967    on screen, printed and exported.
968
969  + Don't open a survey when its name is double clicked.  This was happening
970    due to code added to "allow double-clicking to work on wxMSW >= 2.8.11".
971    However, reverting that change still seems to allow double-clicking to work
972    on both wxMSW and wxGTK, but fixes the unwanted additional opening of the
973    survey.
974
975  + Pick initial survey scaling based on whichever of the window width or
976    height gives the smaller scale.  Previously we always used the window
977    width, which can result in parts of the cave being outside the initial
978    view.  Reported by Wookey.
979
980  + Drop ability to specify a PROJ string in the export dialog.  This was added
981    to allow exporting to formats such as GPX before we added support for
982    specifying the projection in .svx files, and that support is now mature.
983
984  + DXF export now uses 2 decimal places (was 6) for the bounding box, for
985    consistency with the precision used for coordinates.
986
987  + Fix handling of surface flag during export.  In formats which discriminate,
988    legs could previously have got assigned the wrong status.
989
990  + Fix bug which probably prevented aven starting when OpenGL double buffering
991    is unavailable.  This is unlikely to affect any common configurations.
992
993  + (Microsoft Windows version): Fix loading of 3d files with non-ASCII
994    filenames.  Issue reported by Matic.
995
996  + (Microsoft Windows version): Fix incorrect display of some toolbar icons.
997    Probably broken since 1.2.17.
998
999* survexport: New command-line export program which uses aven's export code.
1000  Replaces 3dtopos, cad3d and findentrances, since it can do all that these
1001  tools could do, plus much more.
1002
1003* Merge more Spanish i18n updates from Evaristo Quiroga.
1004
1005* Minor updates to various other translations.
1006
1007* img library:
1008
1009  + Now supports reading from and writing to an existing FILE*.
1010
1011  + Improve API documentation.
1012
1013* (Microsoft Windows version): Fix packaging to include wxWidgets translation
1014  files like it was supposed to, which fixes a few missing translations.  This
1015  was probably broken by changes in 1.2.8.  Reported by Evaristo Quiroga.
1016
1017* (Microsoft Windows version): Drop two options from explorer bindings.
1018  "Convert to DXF" and "Convert for hand plotting" have both been supported via
1019  aven for a while, and that's a more useful way to access them as you can
1020  control what gets exported.
1021
1022Changes in 1.2.34 (2018-03-24):
1023
1024* aven:
1025
1026  + (Microsoft Windows version): Fix error on startup in the pre-built version
1027    of 1.2.33.
1028
1029  + (Microsoft Windows version): Now using wxWidgets 3.0.4 (was 3.0.2).
1030
1031Changes in 1.2.33 (2018-03-22):
1032
1033* aven:
1034
1035  + Reliably disable scale bar in perspective view.  This is supposed to happen
1036    (because the scale across the screen varies in perspective view) but
1037    actually the scale bar stayed around until an update was forced for another
1038    reason.  Spotted thanks to Pedro Silva Pinto.
1039
1040  + Make "no date"/"not in loop" colour grey.  The white was a bit bright and
1041    made it harder to see the legs that had colours.  The grey now used is
1042    within the brightness range of the other colours.  Fixes #94, reported by
1043    Erin Lynch.
1044
1045  + Fix KML export - exporting both survey legs and station names resulted in a
1046    malformed KML file.  This bug was introduced in 1.2.30 when support for
1047    exporting passages and walls was added.  Reported by Erin Lynch in #90.
1048
1049  + Consistently use 2 decimal places for altitude in KML output.  Some places
1050    used 8 decimal places which is appropriate for lat and long, but clearly
1051    overkill for an altitude in metres and increases the file size
1052    unnecessarily.
1053
1054  + Right-align bearing widget in print/export dialog.  The change to allow the
1055    value to wrap round from 360 to 0 in 1.2.27 inadvertently made this control
1056    left-aligned (due to incorrect wxWidgets documentation of the default style
1057    for this control).
1058
1059  + (Unix version): Work around wxWidgets bug so that custom cursors work
1060    under GTK3.
1061
1062  + (Unix version): Update GTK version reporting - report GTK3, and don't
1063    bother to report subversions of GTK2 (it seems to be fairly arbitrary
1064    which subversions wxWidgets defines constants for).
1065
1066  + Update code to work without warnings when using wxWidgets 3.1.0 (the
1067    current development version).
1068
1069  + Make movie export code compatible with upcoming FFmpeg 3.5 release.
1070    It should still work with the older versions that worked before this
1071    change.  Reported by James Cowgill in https://bugs.debian.org/888334
1072
1073* cavern:
1074
1075  + Warn about 2 digit years.  We can't change the assumption that these are
1076    19xx without risking breaking existing datasets, but the further we get
1077    into this century, the more likely such an assumption is to catch someone
1078    out.  The warning can easily be quashed by explicitly adding the assumed
1079    "19".
1080
1081* The Spanish translation is now up to date once more, thanks to updates from
1082  Evaristo Quiroga.
1083
1084* Merge French translation updates from Jean-Marc.
1085
1086* Fix transposed German Northing and Easting labels.  Fixes #95, reported by
1087  milosch.
1088
1089* Fill in missing translations of "Easting", "Northing", "E" and "N" for
1090  Bulgarian, Greek, Hungarian, Polish and Russian based on other existing
1091  translated messages.
1092
1093* Align .pos file headings better with columns of coordinates below for
1094  Indonesian and Polish.
1095
1096* Fix handling of the message string "error" before messages loaded.  If
1097  there's an error loading messages, we need this message to report it.
1098  Reported by Martin Sluka.
1099
1100* Fix a few compiler warnings.
1101
1102* img library: Fix extracting leaf survey name for survey title.  When there
1103  are three or more levels of survey, we were taking everything after the first
1104  dot rather than everything after the last dot.
1105
1106* Fix problems with testsuite on macOS:
1107
1108  + cavern.tst: Skip "ONELEG" testcase on case-insensitive filing systems
1109    - this test isn't meaningful unless the filing system is case-sensitive,
1110    but happens to fail if it isn't.
1111
1112  + cavern.tst: Workaround limitations of Apple's sed.
1113
1114  + aven.tst: Fix not to hang on macOS.
1115
1116  + smoke.tst: Remove aven testcases which duplicate those in aven.tst.
1117
1118* Clean up handling of support files in relocatable installs - this is now
1119  detected at run time on macOS.
1120
1121* Split out macOS Aven.app creation into a make rule so it can be easily used
1122  by the homebrew formula.
1123
1124* buildmacosx.sh:
1125
1126  + Fix when WX_CONFIG not specified - this was giving a confusing error like:
1127    ./buildmacosx.sh: line 163: --cc: command not found
1128
1129  + Use wxWidgets 3.0.4.
1130
1131* Stop checking wx-config --ldflags as this option was removed in wxWidgets 2.6
1132  and we currently require 2.8 or newer.
1133
1134Changes in 1.2.32 (2017-07-08):
1135
1136* aven:
1137
1138  + Make splays on printouts a darker shade of grey.  Reported by Erin Lynch
1139    and Anthony Day.
1140
1141  + In export formats which include 3 dimensions (DXF, PLT, GPX, KML, JSON,
1142    POS), the value in the Z dimension was negated.  Bug introduced by fixes
1143    for export of rotated plans and tilted elevations in 1.2.27.  Reported by
1144    Erin Lynch in #89.
1145
1146  + Ignore viewing angles for export formats which work in 3D.  When the
1147    rotation and tilt controls are hidden in the export dialog we were still
1148    using their values to transform the data, so if you set them with for one
1149    export format which support them, then switched to an export format which
1150    doesn't, you'd get bogus coordinates in the exported file.  Bug probably
1151    introduced in 1.2.27 by fixes for exports of rotated plans and tilted
1152    elevations.
1153
1154  + Fix exporting to skencil and Survex .pos formats.  When aven's export to
1155    .pos was added in 1.2.19, the ordering didn't match up and since then .pos
1156    export has produced skencil files and vice versa.
1157
1158  + Don't leave terrain on if loading terrain data fails.  Previously if you
1159    clicked the terrain icon (or via the menu) with no terrain loaded, but no
1160    terrain got loaded (e.g. because the survey data lacks an explicit
1161    coordinate system, or because the file failed to load, or because you
1162    cancelled the dialog) then the terrain icon/menu item was still changed to
1163    "on".
1164
1165  + Disable texturing while drawing terrain.  Previously the terrain got a bit
1166    darker when "Textured Walls" were enabled.
1167
1168  + Force a refresh when "Textured Walls" are enabled or disabled.  Previously
1169    the display wouldn't update right away.
1170
1171* Manual:
1172
1173  + Document how to specify fixed point altitude in feet.
1174
1175  + Explain why *fix warns about unused fixed points
1176
1177* Building from source now requires a compiler with decent support for C++11.
1178  If you're using GCC, then GCC 4.7 should suffice.  This should not be an
1179  onerous requirement - e.g. Debian wheezy and Ubuntu trusty both have a recent
1180  enough GCC.  If special options are needed, these should get probed for and
1181  automatically.  Fixes building 1.2.31 with GCC < 6, reported by Wookey.
1182
1183Changes in 1.2.31 (2017-07-01):
1184
1185* aven:
1186
1187  + Use superscript 'g' symbol instead of word 'grads' in status bar.  This
1188    conserves the limited space available, and we already do this in the
1189    compass and clino indicators so it's more consistent too.
1190
1191  + Show one decimal place on measure line bearing.  Pointed out by Benedikt
1192    Hallinger on the therion list, though I'm sure this has been asked for
1193    before by others.
1194
1195  + Show gradient of the measuring line when both ends are stations.
1196
1197  + Allow selection of text in cavern log window.  Selection was disabled in
1198    1.2.28 because it seemed you couldn't actually copy selected text to the
1199    clipboard, but retesting this now actually works fine for me, both with
1200    current git master with the change reverted, and with code just before the
1201    original change.
1202
1203  + More robust parsing of cavern output (cleanly handle context highlighting
1204    which extends beyond the end of the line).
1205
1206  + Allow showing duplicate legs as dashed lines or hiding them entirely,
1207    with dashed now being the default.  Implemented by Patrick Warren.
1208
1209  + Also allow "Dashed" for splays and "Faded" for duplicate legs.
1210
1211  + Splay legs in surface data are also shown faded.
1212
1213  + Check environment variables VISUAL and EDITOR when looking for editor to
1214    use when a warning or error is clicked on in the cavern log window.  The
1215    specified editor may have a GUI or need to run in a terminal, so we have to
1216    special-case each editor supported, and that means we can pass extra
1217    options needed to position the cursor on the appropriate line/column.
1218    Currently these editors are supported: gvim, nvim, vim, gedit, pluma,
1219    emacs, nano, jed, kate.  Suggested by Wookey.
1220
1221  + Fix handling of non-square terrain data files - the X and Y dimensions were
1222    swapped.  Reported by detrito.
1223
1224  + Improve parsing of DEM data with .hdr file.  Use documented defaults for
1225    more values, and where we only support a subset of values (or a particular
1226    value) check for unsupported values in more cases.
1227
1228  + When colouring by depth, fix colouring and texturing of polygons which
1229    cross depth bands.  The previous problems were most obvious with high
1230    chambers and long legs down deep pitches, especially in for surveys without
1231    much vertical range.
1232
1233  + Support for drawing blobs using point sprites was added in 1.2.28,
1234    but caching that this worked wasn't hooked up properly so the test to
1235    see if this worked would happen at the start of each run.  This is now
1236    cached as intended which should reduce start up time a little when blobs
1237    are drawn in this way.
1238
1239  + Fix drawing of crosses with lines.  This is a fall-back case which is
1240    rarely used as most OpenGL setups will handle a better method, but it was
1241    resulting in crosses with a four-pixel square in the centre - now the
1242    centre should be a single pixel.
1243
1244* cavern:
1245
1246  + Allow *data with no arguments to reset the current style - useful for
1247    entering passage data where there are side passages.
1248
1249  + Fix hang processing file without newline at end.  This bug was introduced
1250    by changes in 1.2.28.  Reported by Mark Brown.
1251
1252  + (Mac OS X and Microsoft Windows versions): Build with newer version of
1253    PROJ library which fixes buggy handling of *fix with lat-long coordinates.
1254    Also add a testcase to the testsuite to alert users building for themselves
1255    with an affected PROJ version on any platform.  Reported by Ross Davidson.
1256
1257  + Fix cavern to handle Compass .DAT with no survey team.  Previously this
1258    resulted in the bogus error: Expecting numeric field, found "FROM"
1259    Reported by Erin Lynch.
1260
1261  + Handle UTF-8 "BOM" at start of .svx files.  Unicode doesn't recommend its
1262    use, but Microsoft stuff seems to like to create files with it in, and the
1263    error cavern currently reports for such files is very confusing, so it
1264    seems best to just handle it.  Reported by Rob Eavis.
1265
1266  + Change a couple of messages to use double quotes for consistency with all
1267    other messages.
1268
1269* extend:
1270
1271  + Now runs a bit faster.
1272
1273  + Splays are now carried over the extended survey.  The current handling
1274    is simplistic, but should do a good enough job to be more useful than
1275    discarding splays.  The splays at each station are all rotated together
1276    based on the bearing between the stations either side of the current one
1277    along the first path extended through that station.  This nicely handles
1278    dead ends and the situation at the top or bottom of a pitch, and should
1279    tend to pick an angle close to the passage orientation along a traverse.
1280    It's weakest at junctions.  Feedback (especially examples which could
1281    be handled better) most welcome.
1282
1283* French translation is now up to date again, thanks to Jean-Marc.
1284
1285* Remove erroneous menu shortcut markers from Polish translations.
1286
1287* Fill in some missing translations in several languages by using message
1288  translations from therion.
1289
1290* Add note to *fix documentation to clarify the coordinate order with *cs
1291  long-lat.  Issue raised by Ross Davidson.
1292
1293* Fix errors in documentation of *units: "DEG" should be "DEGS", and
1294  "MINUTES" has been supported for ages but wasn't documented.  Reported by
1295  Footleg.
1296
1297* Fix a few typos in the documentation.
1298
1299* Fix compilation warning with recent GCC.
1300
1301Changes in 1.2.30 (2016-10-03):
1302
1303* aven:
1304
1305  + (Microsoft Windows version): Fix crash when trying to print or export
1306    (probably introduced in 1.2.28).  Reported by Brian Clipstone.
1307
1308  + Report error if terrain file contains no terrain data in area of survey.
1309    Suggested by detrito.
1310
1311  + Errors when writing an export file were reported with the wrong filename
1312    - the .3d file, not the filename we were trying to write to.
1313
1314  + Export to KML now supports exporting passages, walls and cross-sections.
1315    Addresses the remainder of ticket #4.
1316
1317* Add man page for dump3d.
1318
1319Changes in 1.2.29 (2016-09-27):
1320
1321* aven:
1322
1323  + Fix SVG output with non-ASCII characters (the charset in the SVG file
1324    is now set to UTF-8 not ISO-8859-1).
1325
1326  + (Microsoft Windows version): Fix error dialog on startup in pre-built
1327    version.  Reported by Brian Clipstone.
1328
1329* Manual: Add link to TerrainData wiki page.  Omission highlighted by Erin
1330  Lynch and "detrito".
1331
1332* Fix to build without FFmpeg/libav and with older versions, broken by changes
1333  in 1.2.28.  Reported by James Begley.
1334
1335Changes in 1.2.28 (2016-09-24):
1336
1337* cavern:
1338
1339  + Show the contents of the line after error and warning messages while
1340    processing survey data, and indicate the region of the line in many cases
1341    in the same style that compilers such as GCC and clang use (using the
1342    column number we already have, plus new width information).  Based on a
1343    patch from Mateusz Golicz.
1344
1345  + Add column and width information for many more error and warning messages.
1346
1347  + Fix column for "Separator in survey name" warning.
1348
1349  + Improve warnings when using a backclino with range 0-180 degrees (reusing
1350    the same machinery we already have for a forward clino with range 0-180
1351    degrees).
1352
1353* aven:
1354
1355  + Include LRUD in printout/export of extended elevations, broken by
1356    improvements to export of tilted elevations in 1.2.27.  Reported by Anthony
1357    Day.
1358
1359  + Name <trk> tags in GPX output, so Garmin GPS units name the imported track
1360    usefully.  Reported by Anthony Day.
1361
1362  + Remember scale from previous print or export operation in the same run of
1363    aven.  Suggested by Stuart Bennett.
1364
1365  + Convert range indication below shown line to a highlight on that region
1366    of the line in cavern log window.
1367
1368  + Fix colouring of error/warning without column in cavern log window.
1369
1370  + Fix click on error/warning without column in cavern log window.
1371
1372  + Fix highlight of translations of "error" or "warning" containing non-ASCII
1373    characters.  This fix for this only works with a Unicode build of
1374    wxWidgets, but as of wxWidgets 3.0, all builds are Unicode, so this
1375    shouldn't be much of a problem as wxWidgets 2.x is close to obsolete now.
1376    Reported by Mateusz Golicz.
1377
1378  + Disable selection of text in cavern log window - you can't currently copy
1379    it to the clipboard, so until that's implemented it seems better to disable
1380    the ability to select it.  Reported by Wookey.
1381
1382  + Avoid special "1000" scale entry when exporting.
1383
1384  + Show 1 page when "One Page" selected.
1385
1386  + Reload processed data when restricting view.  Fixes failure when
1387    restricting view on data just processed via aven.  Spotted by Andrew
1388    Atkinson and myself.
1389
1390  + Don't hide blobs and crosses behind terrain.  Reported by Jenny Black.
1391
1392  + Fix rendering of crosses using point sprites.  The texture being used was
1393    misaligned relative to the image used for the visual fidelity check, so the
1394    check always failed and point sprites would never be used.  Where point
1395    sprites are supported, they're probably the fastest option - on my netbook
1396    this change improves FPS by ~6 fold when displaying crosses for a large
1397    survey.
1398
1399  + Support drawing blobs using point sprites.  About 5 times faster than using
1400    lines on my netbook.
1401
1402  + Recheck how best to draw crosses and blobs on the first run after Survex
1403    is upgraded (or downgraded) as the rendering code may have changed (we
1404    already recheck when the OpenGL hardware or driver changes).
1405
1406  + Change "MPEG" export to be MPEG4 (.mp4) rather than MPEG1 (.mpg).
1407    MPEG4 produces smaller output of higher quality, and should be widely
1408    supported these days.  And I can't get the MPEG1 output to work without
1409    buffer underflows, resulting in a file which doesn't play without
1410    glitches.
1411
1412  + Add OGG video to the list of formats - it's more compact than the others
1413    we currently list, though slower to write.
1414
1415  + Fix export to movie formats for which libav/FFmpeg needs to seek the file
1416    being written.  This was broken by changes in 1.2.27.
1417
1418  + Overhaul movie export for the current FFmpeg API, fixing deprecation
1419    warnings when building against a recent version.
1420
1421  + (Microsoft Windows version): Fix corrupted exported movie files.  1.2.27
1422    changed the movie export code to allow writing to files with non-ASCII
1423    characters in the names, but the new code failed to open the file in binary
1424    mode, leading to corrupt output.  Fixes #81, reported by Erin Lynch.
1425
1426  * (Microsoft Windows version): Pre-built version now uses FFmpeg 3.1.3 for
1427    movie export.
1428
1429  * (Mac OS X version): Pre-built version now uses FFmpeg 3.1.3 for movie
1430    export.
1431
1432* Fix to build without FFmpeg/libav, broken by changes in 1.2.27.  Reported by
1433  James Begley.
1434
1435* The Polish translation is now very close to being complete, thanks to a
1436  substantial update from Mateusz Golicz.
1437
1438* Merge catalan translation updates from Adolfo Jayme.
1439
1440* (Microsoft Windows version): Map LANG_CHINESE to zh_CN not zh so Chinese
1441  messages get used automatically.
1442
1443* cavern.tst: Remove random : from after ] - dash ignores the extra character,
1444  but it causes this test to fail if /bin/sh is a different shell (e.g. bash).
1445
1446* cavern.tst: Add expected output for more testcases.
1447
1448* Remove unwanted execute bit from some testcase data.
1449
1450* Use https for more URLs which support it.
1451
1452Changes in 1.2.27 (2016-06-06):
1453
1454* aven:
1455
1456  + Right click on a survey in the survey tree now gives a pop-up menu
1457    with "Hide others", which restricts the view to just that survey
1458    and any subsurveys.  Right click on the root of the survey tree
1459    gives a menu with "Show all" to undo any restriction in effect.
1460    (Currently these are implemented by reloading the file and using
1461    the same machinery as the --survey= command line option, but that will
1462    probably change in the future).
1463
1464  + If there's a sub-survey restriction (from the --survey= command line
1465    option or the new UI described above) it is now shown in brackets after
1466    the survey tree root.
1467
1468  + When reloading a survey, preserve the current view position (previously
1469    the view was recentred).
1470
1471  + When reloading a survey, actually preserve the current scale factor
1472    (this was meant to happen, but the adjustment was applied in the
1473    wrong direction).
1474
1475  + New "File->Extended Elevation..." menu item provides a way to generate
1476    extended elevations for simple cases without having to use the command
1477    line.  Suggested by Fleur Loveridge.
1478
1479  + Don't process key presses if accompanied by an unexpected modifier key.
1480    In particular, this means that aven no longer interferes with Alt+<function
1481    key> (which is typically handled by the desktop) and Alt+<letter> (which is
1482    typically a menu short cut).  Reported by Владимир Георгиев.
1483
1484  + Reduce file loading time by ~5%.  The station name compare function was
1485    something of a hot spot, and optimising it yielded a nice improvement.
1486
1487  + Allow splay legs to be disabled in when printing and exporting.  Mostly
1488    addresses #60.
1489
1490  + SVG export now shows splay legs thinner and in grey.  See #60.
1491
1492  + Fix export of rotated plans and tilted elevations - previously plans were
1493    always aligned with North up, and elevations which weren't exactly side on
1494    were exported as plans.  Reported by Stuart Bennett.
1495
1496  + Fix offset bounding box for exported elevations.
1497
1498  + In print/export dialog the bearing value now wraps if you scroll up past
1499    360 or down past 0.
1500
1501  + Fix greying out of LRUD-based controls in the print/export dialog when the
1502    view is tilted (i.e. not plan or elevation).  This stopped working in
1503    1.2.18 when the pan and tilt spin controls were changed from integer- to
1504    real-valued ones.
1505
1506  + Printouts now show LRUD as pale grey arrows from the station they are
1507    measured from.  Based on patch from Michael Sargent.  Closes #65.
1508
1509  + Take LRUD into account for printout size.  Fixes #72, reported by Erin
1510    Lynch.
1511
1512  + Update movie export code to work with latest version of FFmpeg.
1513
1514  + Make "Show Log" a toggle, so you can click on the button to take a look at
1515    the log, and a second click returns you to the survey view.
1516
1517  + (Microsoft Windows version): Open the font file in binary mode - it looks
1518    like we were lucky and the font file (or at least its current version)
1519    would have loaded OK in text mode despite being binary data.
1520
1521  + (Microsoft Windows version): Exporting to files with non-ASCII filenames
1522    should now work.
1523
1524* cavern:
1525
1526  + Allow tape or backtape to be omitted.  Reported by Erin Lynch.
1527
1528  + Grid convergence is now corrected for when using automatically
1529    calculated declinations (*declination auto <X> <Y> <Z>).  Requested
1530    by Mateusz Golicz on the mailing list.
1531
1532  + Clear any cached calculated declination upon another *declination auto
1533    with different coordinates.  Previously if the date stayed the same,
1534    a previously cached declination for the old coordinates was used.
1535
1536  + Fix check for end of version number array in *require.  We would check up
1537    to 12 version components, the last 9 being bogus.  In practice, *require is
1538    only likely to be used with up to three components, so this wouldn't be an
1539    issue.
1540
1541  + *begin with an invalid prefix could cause a crash in some cases.  Fixed
1542    by patch from Colin Watson.
1543
1544  + Report column locations for errors to do with readings.
1545
1546* Merge translation updates from Jean-Marc.
1547
1548* img library: Better document which members can be set when writing.
1549  Highlighted by email query about use of img API from Владимир Георгиев.
1550
1551* Document how *declination interacts with *calibrate declination if both are
1552  used in the same dataset.
1553
1554* doc/3dformat.htm: Update details of how changes to the current label buffer
1555  are encoded to reflect changes in v8.  Reported by Angus Sawyer.
1556
1557* Use docbook2man instead of docbook-to-man to generated Unix man pages
1558  from SGML source.  The latter seems to be no longer actively maintained, and
1559  docbook2man now does a similarly good job.
1560
1561* Use https for survex.com links, and for other sites which support it.
1562
1563Changes in 1.2.26 (2016-01-07):
1564
1565* aven:
1566
1567  + (Microsoft Windows version): Fix to be able to process .svx files with
1568    cavern again.
1569
1570* (Microsoft Windows version): Simplify upgrading process with innosetup
1571  installer - if Survex is already installed, we now just install to the same
1572  location and use the same start menu folder.
1573
1574* (Linux version): survex.spec: Update for filetype metadata change in 1.2.25.
1575  Fixes #79, reported by James Begley.
1576
1577* (Linux version): survex.spec: Fix to work with RPM 4.13.  Fixes #79, reported
1578  by James Begley.
1579
1580Changes in 1.2.25 (2016-01-05):
1581
1582* aven:
1583
1584  + Drop broken code which attempts to fix 2D pitches.  Fixes #73, reported by
1585    Erin Lynch.  #76 tracks the issue the removed code was trying (but failing)
1586    to address.
1587
1588  + When animating, don't try to update station info based on mouse movement
1589    over the survey tree.
1590
1591  + Further improve code to handle cavern subprocess in aven.
1592
1593  + Fix jump to error for filenames containing colons when the error location
1594    doesn't have a column number.  Bug noted by Jenny Black.
1595
1596  + If we encounter bad UTF-8 in cavern output, replace it with a red and white
1597    ? in a diamond (previously we gave up showing output at the first bad
1598    sequence).  This can happen if you process a .svx file which isn't UTF-8
1599    encoded.
1600
1601  + (Unix version): Don't try to set the terminal window title when opening an
1602    editor from the cavern log window - gnome-terminal no longer supports this,
1603    and there doesn't seem to be a portable option for specifying the title for
1604    terminals which do still support this.
1605
1606  + (Microsoft Windows version): Also quote for cmd.exe so that paths with
1607    spaces in work reliably.  Reported by Marco Cotto.
1608
1609* cavern:
1610
1611  + Improve error for mismatched fore/back-sight plumbs, reported by Andy
1612    Edwards (see #78).
1613
1614  + Fix to use correct sd for backcompass.  We were using zero instead, the
1615    most obvious effect of which was that the threshold for warning about
1616    differing COMPASS and BACKCOMPASS was about 71% of what it should have
1617    been, so we were warning in more cases than we should have been.
1618
1619  + Implement support for specifying a length on backsights - if you're using
1620    something like a disto-x, you'll get a distance reading for the backsight
1621    too.  Fixes #71, reported by Erin Lynch.
1622
1623  + Make line counting more robust to mixed line ends.  Noticed in example file
1624    from Pete Smart (see #69).
1625
1626* extend: New --show-breaks option which adds a leg flagged as surface survey
1627  between each points at which a loop has been broken.  Suggested by Jenny
1628  Black.
1629
1630* (Unix version): Update filetype metadata to work with modern desktops.
1631
1632* Fix incorrect reporting of errors reading and writing processed survey data.
1633  Since 1.2.8, the error strings corresponding to IMG_CANTOPENOUT,
1634  IMG_BADFORMAT and IMG_DIRECTORY have been mixed up (this doesn't affect
1635  external programs using the img library, only Survex).  Reported by Jenny
1636  Black.
1637
1638* Add missing options to extend man page and --help output.  Noted by Jenny
1639  Black.
1640
1641* Document Document Ctrl+cursor keys for rotating and tilting in aven man page.
1642
1643* Fix broken SGML markup in manual.
1644
1645* Fix typo in manual reported by Jenny Black.
1646
1647* Update vim syntax file for newer commands, etc.
1648
1649* Minor translation updates.  Thanks to Piotr Strębski and Jean-Marc.
1650
1651* Fix to compile with FFmpeg 2.9.  Reported by Andreas Cadhalpun in
1652  https://bugs.debian.org/803863
1653
1654* Stop maintaining ChangeLog files.  They make merging patches harder, and stop
1655  'git cherry-pick' from working as it should.  The git repo history should be
1656  sufficient for complying with GPLv2 2(a).
1657
1658* (Microsoft Windows version): The installer requires admin privileges on Vista
1659  and later and OS versions older than Vista are past end of life, so drop code
1660  which tries to set up the registry differently depending if we have admin
1661  privileges or not.
1662
1663Changes in 1.2.24 (2015-09-23):
1664
1665* aven:
1666
1667  + (Microsoft Windows version): Fix the cavern log window.  Reported by Brian
1668    Clipstone.
1669
1670  + (Microsoft Windows version): Add workaround to avoid breakage in Therion.
1671    Reported by Jenny Black.
1672
1673  + If wx was built with thread support, aven now runs cavern from a separate
1674    thread, which works much better under wxMSW (where we can't use select),
1675    and also seems a bit smoother on Linux.
1676
1677  + Fix handling of encoding of filenames when the operating system has no
1678    locale installed corresponding to the language selected for Survex's
1679    messages.
1680
1681  + Undo accidentally committed debugging code which was sending message to
1682    the terminal in 1.2.23.
1683
1684* (Linux version): configure now looks first for wx-config-3.0, which Fedora's
1685  wx3 packages have.  Reported by James Begley.
1686
1687* Indonesian translation fully up to date again.
1688
1689* Manual: Document anonymous stations, based on the text from NEWS.  Reported
1690  by Wookey.
1691
1692Changes in 1.2.23 (2015-09-06):
1693
1694* aven:
1695
1696  + Updating the cavern log window is now much smoother, especially on slower
1697    machines.
1698
1699  + Show "busy" mouse cursor while processing survey data.
1700
1701  + Fix an assertion if you try to start processing a survex file while one is
1702    already being processed.
1703
1704  + Processing a .svx file with an error now still adds it to the file history.
1705    Reported by Martin Green.
1706
1707  + Fix the orientation of the starting end of tubes.
1708
1709* cavern:
1710
1711  + New *ref command to allow specifying an external reference (e.g. where to
1712    find the original survey notes).
1713
1714  + Drop support for showing percentage progress in cavern.  It's confusing in
1715    a multiple-file dataset as it shows progress in the current file so jumps
1716    around.  It also slows down processing, and on a slow machine you'd don't
1717    want that, while on a fast machine processing isn't slow enough for the
1718    progress display to be useful.
1719
1720* French translation is now completely up to date, thanks to Michel Bovey.
1721
1722* Bundle proj's EPSG and ESRI code lists in the installers for MS Windows and
1723  OS X so that things like "*cs EPSG:29903" work.  Reported by Graham Mullan.
1724
1725* (Microsoft Windows version): Process survey data with aven rather than
1726  running cavern.
1727
1728* (Microsoft Windows version): Installer built with InnoSetup 5.5.6 (recent
1729  releases have been built with 5.5.3) to see if that solves Ray Duffy's
1730  reported issue with not having file associations for .svx files created.
1731
1732Changes in 1.2.22 (2015-08-17):
1733
1734* aven:
1735
1736  + Ensure that the window has a depth buffer.  Whether it does by default
1737    seems to vary depending on OS and maybe graphics card.  Fixes #55 (terrain
1738    is no longer visible through itself), and also the rendering of passage
1739    tubes.  Thanks to Martin Green for pointing me in the right direction for
1740    finding this fix.
1741
1742* cavern:
1743
1744  + Fix *declination with an angle to actually work.
1745
1746  + Fix assertion if we try to identify a hanging survey by an anonymous
1747    station.
1748
1749  + Improve errors for invalid survey names in *begin, *end, *equate and
1750    *export.
1751
1752Changes in 1.2.21 (2015-07-28):
1753
1754* aven:
1755
1756  + Fix exporting to KML and other text-based formats to always use "." for the
1757    decimal separator - previously "," would be used when the user's locale
1758    specified this for the decimal separator.  Reported by Jan Schorn.
1759
1760  + Implement exporting of survey legs in KML format.
1761
1762  + Put "paddle" placemarker icons on stations in exported KML files, using the
1763    same colour coding for entrances, fixed points and exported points as aven
1764    does.
1765
1766  + Remove the "Coordinate projection" field from the print dialog, as it isn't
1767    relevant there.  Reported by Wookey.
1768
1769  + Fix the initial scale for small caves (since 1.2.18 the initial scale has
1770    been too small).  Reported by Wookey.
1771
1772  + Don't rescale if the same file is reloaded, but adjust the volume diameter
1773    as appropriate.
1774
1775  + Use wxGetenv() to read the SURVEXEDITOR variable, so we can accept Unicode
1776    values on Windows.
1777
1778* cavern:
1779
1780  + Fix coordinate systems using latitude and longitude - PROJ.4 wants these in
1781    radians, but we were passing degrees, which would generally cause the
1782    conversion to the output coordinate system to fail.  Reported by Wookey.
1783
1784  + Fix *fix with standard deviations when *cs is in use, give an error for use
1785    of *fix with standard deviations before *cs.
1786
1787  + Add new *declination command with support for setting the declination
1788    automatically from the IGRF model based on the survey date.  Thanks to the
1789    Therion developers for the IGRF support code, which we're reusing.
1790    Fixes #54, reported by Wookey.
1791
1792  + Allow the units for the zero error to be specified, making it easier to
1793    specify calibration with a scale if you measure the zero error externally
1794    (rather than using the instrument itself).  Fixes #61, reported by Andrew
1795    Atkinson.
1796
1797  + Report the error from PROJ when coordinate conversion fails as part of the
1798    actual error rather than on a separate line.
1799
1800  + Fix use after free after *solve.  This only occurs if a leg between the two
1801    exact same stations appears right before and right after the *solve, which
1802    is unlikely in real data, but the testsuite has an instance of this.  This
1803    was introduced by the repeat leg averaging added in 1.2.17.
1804
1805  + Fix small memory leak when solving network.  This doesn't really matter
1806    when solving at the end of processing as cavern will exit after that, but
1807    if *solve is used we continue processing after solving.
1808
1809* Remove compatibility handling for specifying a country variant of a language
1810  in SURVEXLANG using "-" with a lower case country code (e.g. "en-us") - we
1811  changed to the standard "en_US" way back in 2001.  This code was mangling
1812  character sets with a "-" in, and is no longer useful.
1813
1814* Ignore any "@<something>" modifier in the language code.
1815
1816* Improve documentation of magnetic declination handling, and cover the new
1817  "*DECLINATION" command.
1818
1819* Document aven's command line options in the manual and its man page.
1820  Reported by Jenny Black.
1821
1822* Point to '*case' and '*truncate' from the 'SEE ALSO' sections of each other's
1823  documentation.
1824
1825* Remove references to SpeleoGen from the documentation - it hasn't been
1826  updated for many years, and can't read recent versions of the .3d format.
1827
1828* Strip documentation references to obsolete versions of MS Windows.
1829
1830* doc/HACKING.htm: Update list of debian packages to install to build from git.
1831
1832Changes in 1.2.20 (2015-06-26):
1833
1834* aven:
1835
1836  + When printing, use the top margin rather than the right margin to calculate
1837    the height of the printable area.  In practice, the two values seem to be
1838    the same or very similar by default.
1839
1840  + Avoid assertion if the about dialog image fails to load.  Reported by Phil
1841    Maynard.
1842
1843  + Optimise the size of the about dialog images.
1844
1845  + Add support for reading terrain data which isn't in a .zip file.
1846
1847  + Force a refresh after loading terrain data so that it gets displayed right
1848    away.
1849
1850  + Make checks for terrain data extensions in zip files case insensitive.
1851
1852  + If reading terrain data fails, always report an error and never try to
1853    display it.
1854
1855* cavern: Allow clino readings in diving style data, suggested by Andrew
1856  Atkinson.  Currently these readings are ignored, but a future version will
1857  check that they're consistent with the angle given by the depth gauge and
1858  tape, and perform suitable averaging.
1859
1860* Remove lingering traces of svxedit.
1861
1862* configure: Fix to allow compiling without libav/ffmpeg, as was possible
1863  before 1.2.19.
1864
1865* (Unix version): Install the filetype and aven application icons under
1866  /usr/share/icons/hicolor, which is where they're expected to be these days.
1867
1868* (Unix version): Add %f to Exec in survex-aven.desktop.
1869
1870* (Mac OS X version): Remove useless extra copy of about box images from OS X
1871  disk image.
1872
1873* (Mac OS X version): Only ship one copy of each of the translations.
1874
1875* (Mac OS X version): Reduce the size of the aven binary by disabling a load of
1876  libav features we don't use.
1877
1878* (Microsoft Windows version): Reduce the size of the aven binary by disabling
1879  a load of libav features we don't use.
1880
1881* (Microsoft Windows version): Update message files to fix a missing Chinese
1882  message in the installer.
1883
1884Changes in 1.2.19 (2015-06-18):
1885
1886* aven:
1887
1888  + Fix exporting to GPX, KML and HPGL, which all failed to write the header to
1889    the exported file in 1.2.18.
1890
1891  + Add exporting to Survex .pos format.
1892
1893  + If the measuring line isn't currently active, pressing "Escape" will now
1894    exit full screen mode.
1895
1896  + (Mac OS X version): Change the shortcut for full screen mode to be the
1897    standard Ctrl+Command+F (rather than Shift+Command+F which we have been
1898    using since 1.2.7).
1899
1900  + (Mac OS X version): When we centre the view on the station this can
1901    generate a mouse move event, so clear the variable which says we are
1902    dragging before we process a left click on a station.  This avoids random
1903    rotations of the survey when clicking on a station, reported in #47 by Hugh
1904    St. Lawrence.
1905
1906  + (Mac OS X version): Force use of a non-native toolbar to stop the toolbar
1907    icons from being rescaled and looking fuzzy.
1908
1909  + (Mac OS X version): Remove code added in 1.2.18 which tries to set stop the
1910    toolbar icons from being rescaled, but which requires an unreleased version
1911    of wxWidgets, had a typo in, and doesn't actually seem to work anyway.
1912
1913  + (Mac OS X version): Drop out of full screen mode if the mouse is mode to
1914    the top of the screen, since we can't seem to display the menu bar in this
1915    case like we do on other platforms.
1916
1917  + (Mac OS X version): Enable aven's movie export feature.
1918
1919  + (Mac OS X version): Enable wxDisplay when building wxWidgets to better
1920    support multi-monitor setups.
1921
1922  + (Mac OS X version): Silence warning visible when aven is run from a
1923    terminal about a missing CFBundleTypeRole.
1924
1925  + When reading terrain data from a .zip file, report an error if the .zip
1926    file is bad, or if it doesn't contain any terrain data we recognise.
1927
1928  + Tweak error message in terrain reading code to distinguish two failure
1929    cases.
1930
1931  + Add viewing angles and scale to footer, and shorten some of the other items
1932    to make room for this extra information.  (Fixes ticket #52, reported by
1933    Erin Lynch)
1934
1935  + If the footer is wider than the printout width, scale down the font used
1936    so that it exactly fits; if the footer is narrower, than space out the
1937    items in in so it uses the full width.
1938
1939  + If the saved size for aven's window exceeds the current display size
1940    (mostly likely because we're now plugged into a smaller monitor), then
1941    reduce the size of the window to fit the display.  If the saved size is <
1942    (480x320), increase it to at least that, as aven isn't usable in a smaller
1943    window.
1944
1945  + Remove crude bodge which tries to pick a nicer initial window size when
1946    using wxWidgets without wxDisplay on a multi-monitor setup - aven now opens
1947    with the same size window it had when it was closed, so the initial size is
1948    only relevant on the first ever run.
1949
1950* Assorted translation updates.  Notably Indonesian is at 100% again.
1951
1952* Stop trying to catch and report signals.  The only real reason to do it is so
1953  we can say "Bug in program detected! Please report this to the authors"
1954  before we exit, but when the program crashes that's pretty obvious.  In aven
1955  we try to pop up a message box for this message, which may fail due to
1956  whatever caused the signal, while with the command line tools there's no
1957  great benefit over just letting the shell report the signal.
1958
1959* Use pkg-config to probe for libav and proj, which sorts out the correct flags
1960  for building on OS X against a static install of libav.
1961
1962Changes in 1.2.18 (2015-06-03):
1963
1964* aven:
1965
1966  + Add support for reading terrain data (from a zip file containing either an
1967    SRTM .hgt file, or an ESRI .bil file and associated metadata files), and
1968    rendering it as a transparent surface.
1969
1970  + Remove actions from 'Orientation' and 'Rotation' menus which you wouldn't
1971    sanely want to perform from the menu.
1972
1973  + Create a "Colour by" submenu of the "View" menu to house the various
1974    colouring options.
1975
1976  + Add "Colour by Gradient" and "Colour by Length".
1977
1978  + Make the button to dismiss the "About" dialog "OK" rather than "Close",
1979    which seems more logical, and also allows the dialog to be closed by
1980    pressing "Escape".
1981
1982  + Destroy any existing clipping region before we write the page footer.
1983    Hopefully solves ticket #52, reported by Erin Lynch.
1984
1985  + Don't round bearing and tilt angles to integers when printing and
1986    exporting.
1987
1988  + Add passage export for EPS format.  (Partly addresses ticket #4)
1989
1990  + Add JSON export.  This should be regarded as experimental, and the format
1991    is quite likely to change.
1992
1993  + Pressing F6 now toggles the display of rendering stats, currently FPS
1994    (Frames Per Second) and the number of triangles in the terrain mesh.
1995
1996  + Add a menu item and toolbar button to show the cavern log window if the
1997    currently shown survey data was processed by aven.  Reported by Hugh St
1998    Lawrence in #47, and by Dave Clucas and others previously on the list.
1999
2000  + Add "Save Log" button to Aven's cavern log window.
2001
2002  + In cavern log window, highlight "error" markers in red and "warning"
2003    markers in orange.
2004
2005  + Rework code to read cavern's output.  In particular, we no longer mix
2006    buffered and non-buffered system calls.
2007
2008  + Aven's support for reading colours and font sizes for printouts from
2009    print.ini has never worked - the contents of the ini files are ignored due
2010    to a bug which has been there since the code was added in 2005 - but nobody
2011    has ever complained.  So just strip out that code entirely - we should
2012    support setting the colours and font sizes, but a GUI interface for setting
2013    them would be better.
2014
2015  + Fix to compile with a Unicode build of wxWidgets 2.8.  Reported by Bill
2016    Gee.
2017
2018  + Take the width of the messages used above the compass and clino into
2019    account when calculating how much space to allow for them - now the labels
2020    won't overlap or be cut off in translations where they are long.
2021
2022  + (Mac OS X version): Attempt to address the size of the toolbar icons.
2023
2024* cavern:
2025
2026  + Reject *fix with SDs which aren't all positive.  (fixes#2, reported by
2027    susscorfa).
2028
2029  + Use the currently set units when outputting measurements in warnings,
2030    errors, and the stats at the end of the run.  Requested by Bill Gee.
2031
2032  + Include column number when a *include file isn't found.
2033
2034  + Show 'error' in front of error messages, like we show 'warning' in front of
2035    warnings.  Fixes #48, reported by Wookey.
2036
2037  + Increase the threshold for warning that fore and back measurements differ
2038    from 2 SDs to 3 SDs.
2039
2040* findentrances: If the 3d file specifies the coordinate system, use it.
2041
2042* svxedit: Remove svxedit - while an editor with built-in knowledge of survex
2043  would be nice to have, svxedit doesn't really offer that, and it looks ugly
2044  in a modern desktop.
2045
2046* If we run out of memory while reading a processed survey data file, include
2047  the filename in the error message.
2048
2049* Many translation updates - notably Indonesian and Russian are now the two
2050  most complete translations.
2051
2052* (Microsoft Windows version): Add code page 1252 mappings for fancy quotes.
2053
2054* Transliterate gradient and infinity symbols if the current character set
2055  lacks them.
2056
2057* Add SVG version of .plt icon.
2058
2059* Manual:
2060
2061  + Add complete list of quantities you can set SDs for.  Thanks for Wookey for
2062    highlighting that the previous list was incomplete.
2063
2064  + Document averaging of a group of repeated readings.
2065
2066  + Add a link to the sample data from the manual.
2067
2068  + Remove references to contact addresses which are no longer there.  Remove
2069    offer to post people floppies, and references to a CD image which isn't
2070    available for download.
2071
2072* Remove non-breaking spaces from the diffpos and extend manual pages, as they
2073  actually make the output formatting worse (presumably these used to work
2074  around a since-fixed bug in one of the docbook processing tools).
2075
2076* doc/TODO.htm: Update.
2077
2078* Fix to compile without warnings with 'g++ --std=gnu++11'.
2079
2080Changes in 1.2.17 (2015-02-24):
2081
2082* MacOS X version:
2083
2084  + Update INSTALL file with current status.
2085
2086  + Aven.app now has a custom icon.
2087
2088  + Add icons for all the filetypes supported.
2089
2090  + Add Finder actions for .svx, .3d, .plt and .pos files.
2091
2092  + aven: Hide the status bar and tool bar in Full Screen mode, as wx doesn't
2093    currently do this for us.
2094
2095  + aven: Fix short-cut for toggling Full Screen mode.
2096
2097  + aven: Make "About" menu item appear.
2098
2099  + aven: Fix "Close" button in about dialog.
2100
2101  + aven: Make custom cursors black with a white outline to match the standard
2102    OS X cursor.
2103
2104  + svxedit: Now wrapped up in an application bundle as svxedit.app.  It
2105    still doesn't really work like a standard app though - e.g. you can't load
2106    files from Finder (instead run svxedit.app and use File->Open), the font
2107    size of most menu items is wrong, the icon for the app is the wish icon
2108    rather than the svxedit icon, shortcuts use Ctrl not the Cmd key, and
2109    probably more.  I'd probably recommend using another editor (OS X comes
2110    with TextEdit.app for example).
2111
2112  + The documentation is now in a "Docs" directory alongside the apps, rather
2113    than in the rather less obvious "share/doc/survex" directory.
2114
2115  + Default to building for x86_64, since all modern Macs are 64 bit.
2116
2117  + Disable use of liblzma when building wxWidgets for OS X, which was
2118    preventing the build from working on OS X 10.6.8.
2119
2120  + Download wx sources from SF via redirecting link.  Thanks to David A.
2121    Riggs.
2122
2123  + buildmacosx.sh: Handle the mount point for the disk image containing a
2124    space.
2125
2126  + Link with a static build of PROJ for doing coordinate system conversions.
2127
2128  + Build wx with --disable-webview to avoid a compilation failure on OS X
2129    10.10.1.
2130
2131  + Use wx-config --cc and --cxx to get the compilers to use for building
2132    everything else, as wx adds options to them which otherwise cause linking
2133    errors.
2134
2135  + The diskimage (.dmg) file is now compressed with bzip2, which gives a
2136    smaller download.  This means OS X 10.4 is required, but we probably
2137    already need at least 10.5 because that's the minimum version which the
2138    wxWidgets build supports by default.
2139
2140  + Remove unused files and copies of files from the diskimage.
2141
2142* cavern: If the same leg is repeated consecutively, average the readings and
2143  treat as a single leg.
2144
2145* dump3d: Report SEPARATOR used by the file being read.
2146
2147* aven.svg: Fix visual glitch in SVG icon for aven.  Noted by David A. Riggs.
2148
2149* aven:
2150
2151  + Greatly reduce flicker when mouse is moved to the top of the screen in full
2152    screen mode and the menu bar reappears.
2153
2154  + For export formats where scaling is supporting, aven now actually uses the
2155    scale specified in the export dialog (previously it ignored this and used
2156    1:500).
2157
2158  + Reimplement animation so that it's based on angular change per unit of
2159    elapsed time, rather than averaging the time take for the last two scene
2160    redraws.  This gives smoother animation in the face of variable load and
2161    scene redraw time, and should be more consistent between platforms.
2162
2163  + Switching to a point of the compass during auto-rotation now jumps straight
2164    there rather than the two animations fighting.
2165
2166  + Reduce the maximum auto-rotation speed, as the previous limit was uselessly
2167    fast.
2168
2169  + Disable stepping the rotation angle when animating (previously we only did
2170    when rotating).
2171
2172  + Speed up start-up a bit - rather than loading icons from individual PNG
2173    files on disk, compile them into the aven binary.
2174
2175* (Unix version): Add "MimeType" field to desktop files so that file
2176  associations work out of the box with modern desktop environments.
2177
2178* Add start of Hungarian translation from Imre Balogh.
2179
2180* Merge in many updates to the Russian translation from "vsuhachev".
2181
2182* Assorted minor updates to other translations.
2183
2184* Create scalable (SVG) versions of file type icons.
2185
2186* doc/manual.sgml: Remove $Id and $Date markers, as they don't get expanded now
2187  we're using git.
2188
2189* tests/: Improve test coverage in a few places:
2190
2191  + Extend tests of fore and back sights to test calibration of the back
2192    compass.
2193
2194  + Test "Can't calibrate angular and length quantities together" error.
2195
2196  + Check that "*set names ." works when "." is also the decimal point.
2197
2198Changes in 1.2.16 (2014-10-17):
2199
2200* aven: Add KML export (stations only currently).
2201
2202* aven: Allow measuring line to measure from anonymous stations.  (Fixes #44)
2203
2204* aven: Fix corrupted names in exported files.
2205
2206* aven: Fix error log window under wxWidgets >= 2.9 to include the system
2207  information before the first log message like it does under wxWidgets 2.8.
2208
2209* cavern: Add support for "*cs JTSK" and "*cs JTSK03".
2210
2211* tests/: Improve test coverage.
2212
2213* Translation updates for many languages, plus the start of translations to
2214  Greek and Polish.
2215
2216* Fix to build against wxWidgets 3.0 built with assertions disabled.  Reported
2217  by Martin Sluka.
2218
2219* Fix warnings when compiling with clang (which is the default compiler on
2220  Mac OS X).  Reported by Martin Sluka.
2221
2222Changes in 1.2.15 (2014-08-14):
2223
2224* cavern: The *cs command now also supports "long-lat", "s-merc" (for "Web
2225  Mercator"), EPSG and ESRI codes, "eur79z30", "ijtsk" and "ijtsk03".  This
2226  means that we now support all the coordinates systems which Therion does,
2227  except for a few which don't have X=East and Y=North.  The documentation
2228  for *cs has also been improved.
2229
2230* aven: We no longer persist full screen mode between runs - it's not a
2231  standard behaviour of desktop programs, and it's too easy to go into full
2232  screen mode from the menu and then not be able to get out again because you
2233  don't know the required key shortcut. (ticket#39)
2234
2235* aven: When in full screen mode, moving the mouse to the top of the screen now
2236  makes the menu bar appear.  This provides a non-shortcut way out of full
2237  screen mode, as well as making it easier to perform other operations while in
2238  full screen mode.  The current implementation gives an annoyingly flickery
2239  transition, but hopefully we can improve this in future. (ticket#39)
2240
2241* (MacOS X version): If built with wxWidgets >= 3.1.0 (which is still in
2242  development), we now call EnableFullScreenView() which improves the full
2243  screen mode experience on OS X 10.7 and later.
2244
2245* img library: Improve documentation for img_ERROR_INFO.
2246
2247* tests/: Ship some missing .out files and compare.tst.
2248
2249* tests/: cavern.tst testcase back2 is now actually used.  Fix a bug in this
2250  testcase, and extend it to cover a variant of the situation reported as a bug
2251  in therion by Bill Gee to the therion list.
2252
2253* (Linux version) survex.spec: Add run-time requirement on proj and proj-epsg
2254  for the survex package and on tk for the svxedit package.
2255
2256Changes in 1.2.14 (2014-07-05):
2257
2258* img library: Add ability to store a PROJ4 string describing the coordinate
2259  system in use in 3d v8 files.
2260
2261* aven: If the 3d file specifies a coordinate system, then use it for exporting
2262  to formats which need to know (currently GPX).  If the input file doesn't
2263  specify the coordinate system, allow the user to enter a PROJ4 string in the
2264  export dialog.
2265
2266* aven: You can now quickly zoom to a particular area by holding down the
2267  "Shift" key and dragging with the left mouse button to create a rectangular
2268  "rubber band box" around the area you wish to zoom to.  If you release the
2269  "Shift" key while still dragging, the box is centred on the start point
2270  rather than having one corner there.
2271
2272* aven: Fix exporting of passage tubes in elevations and extended elevations
2273  - previously up and down were getting drawn across the page!
2274
2275* aven: Fix "Cancel" to work on the print/export dialog, broken by changes in
2276  1.2.13.  (Reported by Brian Clipstone)
2277
2278* aven: Fix the conditions on which the menu item "Cancel measuring line" is
2279  enabled - previously it was hard to actually cancel it via the menu.
2280  Reported by Hugh St Lawrence.
2281
2282* aven: Fix wx assertion failures when showing hit test debug view on platforms
2283  such as 64-bit Linux.
2284
2285* aven: When viewing from above, show "Plan" above the "clino" which indicates
2286  the tilt angle (instead of "Elevation -90°").
2287
2288* aven: The extended font data now loads faster, and also uses less memory on
2289  64-bit platforms.
2290
2291* aven: Dragging the vertical divider between the side panel and the 3D view
2292  now only updates when you finish the drag, as redrawing continuously just
2293  looks clunky except on an ultra-fast machine.
2294
2295* aven: (German translation) Abbreviate "Blickrichtung" so it doesn't overfill
2296  the space available in the aven UI.
2297
2298* cavern: Add a *cs command to allow setting the coordinate system for *fix
2299  commands, and the coordinate system used for processed survey data.  The
2300  latter is now stored in 3d v8 format files.
2301
2302* cavern: Add support for 'L' flag (exclude from length) in Compass .dat files
2303  and handle it in the same way as the "DUPLICATE" flag in .svx files.
2304
2305* cavern: If there's more than one *fix command with coordinates, still
2306  actually fix the second and subsequent ones, to avoid triggering bogus errors
2307  about unconnected surveys.
2308
2309* cavern: If there's more than one *fix command with coordinates, report the
2310  station name of the previous one, plus the file and line number where it was.
2311
2312* cavern: Fix handling of the rather contrived case of *fix with no coordinates
2313  followed by *solve and then another *fix with no coordinates not to access
2314  freed memory.
2315
2316* dump3d: Report any specified coordinate system.
2317
2318* doc/3dformat.htm: Update to document how the coordinate system is stored.
2319
2320* (Microsoft Windows version): Include dump3d in the installer.
2321
2322* Fix a compiler warning.
2323
2324* Improve test coverage.
2325
2326Changes in 1.2.13 (2014-05-15):
2327
2328* aven: Fix --print option to wait for printing to happen before exiting
2329  (previously it would exit right after opening the print dialog, so you
2330  couldn't actually print anything out using it).
2331
2332* aven: Increase the threshold for how close the pointer needs to be to a
2333  station from 5 pixels to 7 to try to help touchscreen users.  Reported by
2334  Hugh St Lawrence.
2335
2336* aven: Add "fat finger" mode, toggled by pressing F2, to allow investigating
2337  if increasing the minimum pointer to station threshold helps Hugh's problems
2338  with using aven on a touch screen device.
2339
2340* aven: The measuring line was unable to see stations which had just been
2341  revealed by toggling surface or underground legs on - this is now fixed.
2342
2343* aven: Add "hit test grid debug" mode, which shows the hit test grid and how
2344  many entries are in each box (toggled by F3).
2345
2346* aven: Pressing F4 now allows the user to toggle wxWidgets assertion messages
2347  off and back on.
2348
2349* aven: Create the empty hit-test grid data structure lazily, to reduce start
2350  up time a little.
2351
2352* cavern: Improve messages which talk about "tags" and/or "prefixes" in *begin
2353  and *end commands to instead talk about "survey names".
2354
2355* cavern: For ages cavern has warned if you reentered a survey, but this
2356  warning was suppressed if it occurred at the same line of the same file as
2357  the survey was first entered, but this can only happen if you include the
2358  same survey file more than once, which isn't a sensible thing to do for a
2359  file with actual survey data in (you might reasonably do it to set up survey
2360  grade details or something like that).  The warning is now given in this
2361  situation too.
2362
2363* cavern: After 5 warnings about reentering a survey we give up warning about
2364  it, but we used to keep reporting where the survey was originally entered -
2365  this secondary diagnostic message is now silenced when the main message is.
2366
2367* (Microsoft Windows version): Compile C code with optimisation on.
2368
2369* Add the start of a Russian translation, with messages take from therion.
2370
2371* Minor translation updates to French.
2372
2373* Fix compiler warning from GCC.
2374
2375* Testsuite improvements:
2376
2377  + Test that "..." anon station works.
2378
2379  + cavern.tst: Check number of errors returned by all testcases which should
2380    fail and give an error count.
2381
2382  + cavern.tst: Fix to actually fully test everything when builddir != srcdir.
2383
2384Changes in 1.2.12 (2014-04-14):
2385
2386* aven: Fix measuring line to show change in altitude rather than altitude
2387  itself (accidentally broken by changes in 1.2.11).  Reported by Brian
2388  Clipstone.
2389
2390* aven: Fix printing when built with wxWidgets 3.0.
2391
2392* aven: Several visual improvements to printouts:
2393
2394  + Move the numbers below the scale bar down a little so that they don't
2395    overlap the scale bar ticks.
2396
2397  + Set the clipping region after we draw the page border and info box to avoid
2398    clipping the border in print preview.
2399
2400  + Tidy up the appearance of the compass and elevation arrow.
2401
2402* aven: Fix to build with libav 10.  Reported by Moritz Muehlenhoff in
2403  <http://bugs.debian.org/739332>.
2404
2405* aven: Fix to build with older libav where avcodec_free_frame() isn't
2406  available.
2407
2408* (Linux version) survex.spec: Update spec file used for building RPM packages.
2409
2410* (Unix version): Add "Keywords:" entry to .desktop files.
2411
2412* (Unix version): Enable large file support, mostly to support filing systems
2413  which return 64 bit inode values, such as CIFS mounts.
2414
2415* (Microsoft Windows version): Only allow "A-Z" or "a-z" for driver letters,
2416  rather than any character which is a letter in the current locale.
2417
2418* Various translation updates.
2419
2420Changes in 1.2.11 (2014-01-28):
2421
2422* aven: Fix wxWidgets assertion when double clicking on an anonymous station.
2423  Reported by Kevin Dixon.
2424
2425* aven: Embed the font data for the first 256 Unicode characters for use in the
2426  survey pane into the compiled aven binary to reduce start up overhead.  Any
2427  additional characters needed are loaded from a data file only if/when a
2428  character >= U+100 is actually needed (as before).
2429
2430* aven: Fix display of Unicode characters above 256 when there's a character
2431  <= 256 earlier in the same string.
2432
2433* aven: Use the actual width of Unicode characters above 256 rather than
2434  assuming they are 16 pixels wide.
2435
2436* aven: If full screen, don't show the side panel when a new file is opened
2437  (e.g. via Ctrl+O).
2438
2439* aven: Don't give an assertion failure when showing passages for a cave with
2440  no vertical extent.  Reported by Jonny Prouty.
2441
2442* aven: Change terminology in print dialog - say "legend" instead of "info
2443  box".
2444
2445* aven: Add option to show the tilt angle as a percentage gradient.
2446
2447* aven: Show the units (degrees, grads, or percent) for the tilt and bearing
2448  indicators.
2449
2450* aven: All length units are now translatable.
2451
2452* aven: Split log_fl_error helper function out of CHECK_GL_ERROR macro, which
2453  will reduce code size and also the number of deprecation warnings about
2454  gluErrorString on Mac OS X 10.9.
2455
2456* (Microsoft Windows version): aven: Try to work around redraw issues related
2457  to the measuring line by redrawing the whole window, which doesn't seem to be
2458  measurably slower.
2459
2460* cavern: If *units is used to try to set units for LEVEL, PLUMB, or POSITION,
2461  give an error rather than quietly ignoring the attempt.
2462
2463* cad3d: Make cad3d remap control characters and spaces in station names when
2464  generating PLT output in the same way aven does.
2465
2466* Various translation updates (particular thanks to Eric Madelaine and Dennis
2467  Baudys), including the start of a Bulgarian translation, with messages taken
2468  from Therion and elsewhere.
2469
2470* (Microsoft Windows version): On Microsoft Windows 2000 and newer, use
2471  GetUserDefaultUILanguage() to get the UI language to use.  For older
2472  versions, continue to use GetUserDefaultLCID().
2473
2474* (Microsoft Windows version): The Indonesian translation will now be used
2475  automatically when the system language is set to Indonesian.
2476
2477* (Mac OS X version): Fix to build with wx 3.0.0 on OS X 10.9.  Thanks to David
2478  A. Riggs for his work on this.
2479
2480* (Mac OS X version): Update buildmacosx.sh script to use wx 3.0.0, and add a
2481  checksum check for the downloaded wx sources.
2482
2483* Fix a lot of the compiler warnings when building with clang.
2484
2485* doc/manual.sgml: Add missing quantities to the list documented as accepted by
2486  *units: LEFT, RIGHT, UP/CEILING, DOWN/FLOOR (missing entirely);
2487  BACKCOMPASS/BACKBEARING, BACKCLINO/BACKGRADIENT (missing from the main list,
2488  mentioned in list of the units that can be set for them); COUNT (missing
2489  alternative name for COUNTER); DX/EASTING, DY/NORTHING, DZ/ALTITUDE
2490  (incorrectly listed as X, Y, Z).  Reported by Jonny Prouty.
2491
2492* Test suite: Improve test coverage for cavern.
2493
2494Changes in 1.2.10 (2014-01-15):
2495
2496* aven: Fix assertion if two mouse buttons are held down at the same time.
2497  If dragging with more than one mouse button held down, releasing one causes
2498  another which is still held down to take effect.  Reported by Brian
2499  Clipstone.
2500
2501* aven: If we fail to start the external editor when the user clicks on an
2502  error or warning from cavern, show an error box.
2503
2504* aven: If the survey has a title, add it as a top-level <title> element to
2505  exported SVG files.
2506
2507* aven: Escape '<', '>', and '&' in labels in exported SVG files.
2508
2509* aven: In GPX export, set the <time> element to the datestamp from the 3d
2510  file.
2511
2512* aven: Don't try to write the title if it isn't set or is empty when exporting
2513  GPX files.
2514
2515* aven: Don't bother looking up the printer page setup info when exporting.
2516
2517* (Microsoft Windows version): aven: Fix crash on "File->Print" or
2518  "File->Export" under Windows XP, reported by Brian Clipstone.
2519
2520* (Microsoft Windows version): aven: Fix error dialog about an incorrectly
2521  encoded filename which could occur if run without being asked to load a file
2522  on startup.
2523
2524* (Microsoft Windows version): aven: Compile with optimisation on.
2525
2526* img library, aven: Although processed CMAP data files are often referred to
2527  as "CMAP .XYZ files", it seems that actually, the extension .XYZ isn't used,
2528  rather .SHT (shot variant, produced by CMAP v16 and later), .UNA (unadjusted)
2529  and .ADJ (adjusted) extensions are.  Since we've long checked for .XYZ, we
2530  continue to do so in case anyone is relying on it, but also check for the
2531  other extensions.
2532
2533* img library: Add new "datestamp_numeric" field to struct img giving the
2534  datestamp as a time_t in UTC (or (time_t)-1 if there's no datestamp or we
2535  failed to convert it).  For .3d >= v8, this field is reliable.  We attempt to
2536  convert date strings in .3d <= v7 and CMAP XYZ files, but may get the
2537  timezone wrong.
2538
2539* img library: Fix my_strcasecmp() to handle top-bit set characters better.
2540
2541* cavern: Fix NULL pointer dereference when processing Compass DAT file without
2542  'SURVEY DATE:'.
2543
2544* doc/manual.sgml: Update references to Survex 1.1 which should be to 1.2.
2545
2546* doc/manual.sgml: Note the station length limit Smaps used.
2547
2548* Fix some compiler warnings if built with glibc's fortify source feature
2549  enabled.
2550
2551Changes in 1.2.9 (2014-01-08):
2552
2553* Document --3d-version in cavern man page and the manual.
2554
2555* aven: Fix compilation error in movie export code with recent libavi.
2556
2557* aven: Fix warning on stderr when export a movie as MPEG.
2558
2559* img library: In non-hosted mode, don't define GETC and PUTC if they're
2560  already defined, to allow easy overriding with getc_unlocked() and
2561  putc_unlocked() (which are significantly faster on Linux).
2562
2563* img library: In non-hosted mode, check that int is at least 32 bits,
2564  and if not, use long.  In practice, platforms with 16 bit int are mostly
2565  obsolete, but it's not hard to be portable here.
2566
2567* img library: Add test that img.c and img.h compile in non-hosted mode
2568  (regression test for issue fixed in 1.2.8).
2569
2570* (Microsoft Windows version): aven is now built with wxWidgets 3.0.0.
2571
2572* Update translations from launchpad and from existing similar messages.
2573
2574* Fix some compiler warnings.
2575
2576Changes in 1.2.8 (2013-10-29):
2577
2578* cavern: Fix handling of anonymous wall stations ('..' by default) to
2579  implicitly set the SPLAY leg flag, as was intended.  Reported by Thomas
2580  Holder.
2581
2582* cavern: Tweak .err file output not to lose the space in front of certain
2583  statistics when the value gets large.
2584
2585* cavern: Eliminate redundant progress message when solving simultaneous
2586  equations.
2587
2588* aven: Add a format drop down to the export dialog, and only show fields which
2589  are meaningful and supported for the currently selected export format.  The
2590  format defaults to that used most recently.  The "Elements" and "View" boxes
2591  have been swapped in the print and export dialogs as that layout works much
2592  better when the "View" box is hidden.
2593
2594* aven: Changing checkboxes in the print or export dialog didn't work in 1.2.7
2595  - now works again.  Reported by Anthony Day.
2596
2597* aven: Add GPX export (based on findentrances patch from Olaf Kähler).  In
2598  this release the projection which the survey coordinates are in defaults
2599  to the BMN M31 grid used in the Totes Gebirge in Austria.  On Unix, you
2600  can edit ~/.aven and add a new line setting 'input_projection' to a PROJ
2601  projection string.  The ability to specify this projection in a better
2602  way is coming soon.
2603
2604* aven: New export options "Origin in centre" and "Full coordinates" - the
2605  latter fixes #10.  GPX and PLT output implicitly force "full coordinates".
2606
2607* aven: The "Sketch" vector drawing program got renamed to "Skencil" some
2608  time ago, so update references.
2609
2610* aven: Make the Presentation->Play menu item a checkbox, to avoid a warning
2611  with wxMSW 2.9.5.  Reported by Brian Clipstone.
2612
2613* aven: Make right click in an empty presentation mark the current position and
2614  open it to edit, instead of crashing.
2615
2616* aven: Update movie export code to work with latest libav API.  Reported by
2617  Sebastian Ramacher.
2618
2619* aven: Improve reporting of errors during the process of exporting a movie.
2620
2621* aven: Don't try to close the movie if we aren't producing one.
2622
2623* aven: Fix assertion failure when double-clicking on the survey with wx2.9.
2624
2625* aven: Fix to build with wxMSW 2.9.5.
2626
2627* aven: Fix to build with wx 2.9.5 with wx2.8 compatibility disabled.
2628
2629* cad3d: The "Sketch" vector drawing program got renamed to "Skencil" some time
2630  ago, so add a new --skencil option to specify this output format.  The old
2631  name (--sketch) is still recognised for compatibility.
2632
2633* cad3d: Make --marker-size work for Skencil and SVG output.
2634
2635* dump3d: Make --show-dates option show dates for XSECT.
2636
2637* img library:
2638
2639  + Fix to work once more when used outside of Survex (missing definition of
2640    max() macro and a bad call to free() in img_close() for a file opened for
2641    reading).
2642
2643  + Use lround() instead of round(), and make the tests around whether we use
2644    the library function or the our fallback implementation saner.
2645
2646  + Fix // comments in C code for portability to pre-C99 compilers which don't
2647    support these as an extension.
2648
2649  + Can now be compiled as C++ as well as as C.
2650
2651* (Microsoft Windows version): The installer is now built with a newer version
2652  of Innosetup, and includes translations for all the languages which Survex
2653  itself has any translations for.
2654
2655* (Microsoft Windows version): aven is now built with wxWidgets 2.9.5.
2656
2657* Minor translation updates.
2658
2659* tests/Makefile.am: Distribute files for "normal_bad" testcase.
2660
2661Changes in 1.2.7 (2013-07-27):
2662
2663* Add support for anonymous stations, which are indicated by one, two or three
2664  separator characters - with the default separator of '.', that means '.',
2665  '..', and '...' are anonymous stations.  Single separator ('.' by default)
2666  is an anonymous non-wall point, double separator ('..' by default)
2667  is an anonymous wall point at the end of an implicit splay), and triple
2668  separator ('...' by default) is an anonymous point (with nothing special about
2669  the leg).  A new *alias command allows '-' to be mapped to '..' for
2670  compatibility with pocket topo: *alias station - ..
2671
2672* New version 8 of the 3d format:
2673
2674  + Supports new flags img_SFLAG_ANON and img_SFLAG_WALL.
2675
2676  + New explicit file-wide flag for 'this is an extended elevation', rather
2677    than modifying the survey title to indicate this.
2678
2679  + The survey prefix is often unchanged from one leg to the next, so use a
2680    spare flag to compactly indicate when there's no label change.
2681
2682  + The data style of each leg is now stored.
2683
2684  + The "processed at" time is stored as seconds since 1970 rather than a
2685    human-readable string.
2686
2687  + Since 3d v8 features significant changes to the format, the format
2688    documentation for v7 and earlier has been split off into 3dformat-old.htm.
2689
2690* img library:
2691
2692  + New station flags img_SFLAG_ANON and img_SFLAG_WALL.
2693
2694  + Handle .pos files containing unnamed stations - don't suck the next line in
2695    as the station name, and set img_SFLAG_ANON for them.
2696
2697  + Repurpose the long unused fBinary parameter to img_open_write() as a flags
2698    parameter, and add img_FFLAG_EXTENDED to specify that this is an extended
2699    elevation, in place of appending " (extended)" to the title.  Internally we
2700    still append this to the title (and remove it upon reading) when writing
2701    3d v7 or earlier, but for the new 3d v8 format, this flag is stored
2702    explicitly in the file.
2703
2704  + img.h: Add comments for the lists of "Leg flags" and "Station flags".
2705
2706* aven:
2707
2708  + We now require at least wxWidgets 2.8.0 - it was released over 6 years ago
2709    now, and the wx developers consider even 2.8 to be rather long in the
2710    tooth.  We stopped testing building with wxWidgets 2.6 some time ago, and
2711    formally dropping support for older versions allows a number of workarounds
2712    to be removed from the aven source code.  Also, features deprecated in
2713    wxWidgets 2.9 are no longer used in our code.
2714
2715  + Don't run incremental search on every key-press, as on a slow machine the
2716    short initial search(es) will take a while but not be useful.  Instead only
2717    actually run the search when we're told there are no more key-presses
2718    queued up.
2719
2720  + Implement support for including cross-section information in exported SVG
2721    and DXF files (ticket#4).  The DXF export is untested currently.
2722
2723  + Show splay legs faded by default, with menu options to hide them or show
2724    them like other legs.
2725
2726  + Speed up loading a .3d file with cross-sections by using a map to convert
2727    station names to positions.
2728
2729  + In the cavern log window, don't highlight a file:linenumber if there's no
2730    message after it, which avoids highlighting the "Included from" lines
2731    wrongly.
2732
2733  + Fix not to crash when trying to report an error while starting up.
2734
2735  + (MacOS X version): Change the menu shortcut for "Full Screen Mode" to be
2736    the OS X standard shortcut Shift-Command-F (previously we used F11, but
2737    that's used by the desktop).
2738
2739  + Add checks for errors when reading the font file.
2740
2741  + Remove useless extra quoting when invoking vim to show the location of an
2742    error from cavern.
2743
2744  + Include GL/gl.h before GL/glext.h (needed on Debian wheezy).
2745
2746  + Use wxValidator to simplify keeping svxPrintDlg member variables and fields
2747    in the dialog in sync.
2748
2749* cavern:
2750
2751  + Demote errors about invalid dates to warnings, since we've accepted *date
2752    for ages without any checks on the value, and so existing datasets
2753    probably contain invalid dates and dates in other formats.  (ticket#19)
2754
2755  + New *alias command allows '-' to be mapped to '..' for compatibility with
2756    pocket topo: *alias station - ..
2757
2758  + We want to warn if there's a clino reading which it would be impossible to
2759    have read from the instrument (e.g. on a -90 to 90 degree scale you can't
2760    read "93" (it's probably a typo e.g. for "39").  However, the gradient
2761    reading from a topofil is typically in the range 0 to 180, with 90 being
2762    horizontal.  Really we should allow the valid range to be explicitly
2763    specified, but for now we infer it from the zero error - if this is within
2764    45 degrees of 90 then we assume the instrument can read between 0 and 180
2765    degrees.
2766
2767  + If the survey isn't all connected, still run survey tree checks and report
2768    errors and/or warnings which might suggest typo locations.  Thanks to Kevin
2769    Dixon for the report which highlighted this issue.
2770
2771  + Report a warning if *begin SURVEY has a separator character in SURVEY.
2772
2773  + Report column numbers as well as line numbers for some cavern errors and
2774    warnings.
2775
2776  + Adjust width of node stats table to fit longest count when there are more
2777    than 9999 of a particular order of node.
2778
2779  + If the argument to *include has an opening double quote but the closing
2780    double quote is missing, then skip trying to open the file.
2781
2782  + Move "Station X referred to just once" warning after non-existent survey
2783    check - if both fire, the non-existent survey error is likely to be more
2784    relevant.
2785
2786  + We no longer follow an error for a bad reading in passage data with a bogus
2787    "End of line not blank" error, but instead check the remaining readings on
2788    the same line.
2789
2790  + We no longer follow an error about OMIT for a required reading with a bogus
2791    "End of line not blank" error.
2792
2793  + Report an error if the scale factor in *calibrate is zero - it doesn't make
2794    sense and probably means someone reversed the arguments to *calibrate.
2795
2796  + Report the parent include files starting from the outermost, as that's more
2797    logical when there are multiple levels involved.
2798
2799  + If we were expecting a numeric field and instead get something which starts
2800    with '+', '-', or '.' but which isn't a number, then fix the error to
2801    include that character in the token reported.
2802
2803  + Simplify handling of quantity lists to only recognise 'DEFAULT' as the
2804    first item.
2805
2806* cad3d: Check for errors from img_rewind() and report them.
2807
2808* dump3d:
2809
2810  + Build, install and package dump3d as standard - it's useful for grabbing
2811    info from 3d files in scripts.
2812
2813  + Add --show-dates option.
2814
2815  + Show only 2 decimal places on coordinates and passage dimensions.
2816
2817  + Report the data style of legs.
2818
2819  + Report if the file is an extended elevation.
2820
2821  + Report img_STOP as STOP rather than CODE_0xffffffff.
2822
2823* Test suite:
2824
2825  + cavern.tst: Fix equatenosuchstn testcase (added in 1.2.6) to normalise the
2826    expected output so it passes reliably.
2827
2828  + cavern.tst: Run diffpos <expected> <actual> so the reports of 'Added' and
2829    'Deleted' stations upon failure are the more natural way round.
2830
2831  + Add more testcases, expand some existing testcases, and add expected output
2832    for more.
2833
2834* (Microsoft Windows version): Use wx-config's --cc and --cxx flags to find the
2835  appropriate C and C++ compilers to use, and link mingw build statically to
2836  avoid needing the libgcc DLL (which newer GCC seems to have by default).
2837
2838* (Unix version): When determining the character set for command-line tools,
2839  check environmental variable LANG after LC_ALL and LC_CTYPE.
2840
2841* When determining the language, check environmental variable LC_ALL before
2842  LC_MESSAGES and LANG (but after SURVEXLANG).
2843
2844* If we don't find the message file, only give an error if it was specified
2845  with SURVEXLANG, since that is an explicit instruction to Survex, whereas
2846  LANG, LC_ALL and LC_MESSAGES are essentially system "preferred locale"
2847  settings.
2848
2849* There are a handful of hard-coded English message strings for reporting
2850  errors trying loading message files, etc.  These are all now ASCII, as if we
2851  fail trying to open a message file, it's more likely the encoding isn't
2852  set correctly.
2853
2854* Prune strings we are no longer using and are probably unlikely to use again
2855  into a new file po_codes_dead, so that translators don't get presented with
2856  them to translate.
2857
2858* Merge lots of translation updates.  Most translations are now complete or
2859  close to complete.
2860
2861* Add start of Indonesian translation from Arief Setiadi Wibowo.
2862
2863* Fix various compiler warnings when building from source.
2864
2865* Include scripts gdtconvert and gen_img2aven in the source distribution.
2866
2867Changes in 1.2.6 (2012-02-23):
2868
2869* (Mac OS X version): Fix so that cavern finds its messages when run by aven.
2870
2871* (Microsoft Windows version): Include JPEG images for aven in the installer
2872  package (ticket#35).
2873
2874* cavern: If we have a reference to a station in a non-existent survey, give a
2875  helpful error rather than saying the station hasn't been exported from the
2876  survey.  (Bug reported by Martin Green via email)
2877
2878* aven: Fix to build with a non-Unicode wxWidgets library.  Patch from Olaf
2879  Kahler.
2880
2881* findentrances: Add findentrances utility from Olaf Kahler which produces a
2882  .gpx file with waypoints for entrances.  This needs libproj so is disabled
2883  by default for this release - to enable it install the development stuff for
2884  libproj and build survex with:
2885
2886      make FINDENTRANCES=findentrances
2887      make install FINDENTRANCES=findentrances
2888
2889* dump3d: Add support for showing img_ERROR_INFO items.
2890
2891* doc/3dformat.htm: Merge in some improvements from Mike McCombe.
2892
2893* Incorporate a French translation from launchpad I'd previously copied the
2894  English version of by mistake.  Attempt to correct mistranslation of "survey
2895  file".
2896
2897Changes in 1.2.5 (2012-01-03):
2898
2899* aven:
2900
2901  + The survey tree in the left panel is now in sorted order once more.
2902
2903  + No longer fails with an assertion if used for a long time (we were leaking
2904    an OpenGL list each time one had to be regenerated).
2905
2906  + Now builds with newer FFmpeg library.
2907
2908  + Draw measuring line in front of the indicators rather than behind them.
2909
2910  + Loading a new file (or reloading the current one) no longer invalidates
2911    the OpenGL lists for the compass and clino, so will be a fraction faster.
2912
2913* Improve handling of attempts to look up translated messages before the
2914  message subsystem is fully initialised (which only happens if there's an
2915  error early on).
2916
2917* Improve the survex(7) man page text, and fix it to be marked as section 7 in
2918  the man page source as well as in the filename.
2919
2920Changes in 1.2.4 (2012-01-01):
2921
2922* aven:
2923
2924  + A change in 1.2.3 meant that aven tried to use OpenGL before it was
2925    initialised, which doesn't cause problems in some machines, but causes aven
2926    to abort on others.  This is now fixed, and there's a check in place to
2927    help avoid similar issues in future. (ticket#34)
2928
2929  + Always use metres or feet for the depth colour key, and chose a consistent
2930    precision by looking at the depth range. (ticket#30)
2931
2932  + Show the depth units below the colour bar rather than after every value.
2933
2934  + When zooming way in, stay in metres rather than switching to cm.
2935
2936  + On the scale bar, say “1 mile” rather than “1 miles”.
2937
2938* Translation updates for Catalan, French and Slovak.
2939
2940Changes in 1.2.3 (2011-12-31):
2941
2942* Fix to build with wxWidgets 2.9.2.
2943
2944* (Mac OS X version):
2945
2946  + Processing .svx files from aven now works.
2947
2948  + Remove spurious blank lines from the licence text in "Get Info".
2949
2950  + Don't create the help menu at all, as it is empty (because the "About"
2951    entry goes elsewhere) and sometimes seems to appear in the UI.
2952
2953  + INSTALL.OSX: Update to reflect current status.
2954
2955* aven:
2956
2957  + Fix Y coordinates of surface surveys on printouts.  (Closes #32)
2958
2959  + Improvements to text plotted on the survey pane:
2960
2961    - Support plotting Unicode character points > 256 by lazily loading the
2962      data for them from the font file and plotting them with a direct call to
2963      glBitmap(), which is slower but doesn't require a display list per
2964      character.
2965
2966    - Adjust the spacing from fixed width to putting a one pixel gap either
2967      side of each one character (so two between adjacent glyphs).  Mostly this
2968      reduces the horizontal width, but it adds a pixel for characters like "m"
2969      and two in a few cases.
2970
2971    - Fix .pixelfont file generation to correctly handle characters wider than
2972      8 pixels.
2973
2974  + Fix expected cross shape so don't always reject using texture mapping to
2975    draw crosses.
2976
2977  + As we read a survey file, eliminate tubes consisting of zero XSECTs as well
2978    as those consisting of just one.  Previously we would trip over the empty
2979    tube later.  Such tubes can for example be created by extend if a splay shot
2980    is the start or end of a tube.
2981
2982  + Make the green colour used for entrances in the survey tree the same
2983    (slightly darker than before) green used for the entrance blobs.
2984
2985  + Report the version of the library we're actually running with if built
2986    against wx >= 2.9.2.  Make it clear that the version reported is the
2987    version *built* with for wx < 2.9.2.
2988
2989* extend:
2990
2991  + Copy the end markers for passage tubes.
2992
2993  + Preserve left and right data for tubes (previously they were set to -1.0
2994    which means "no info").
2995
2996* img library: Fix incorrect comment in img.h which claimed that img_XFLAG_END
2997  was no longer used - it certainly is!
2998
2999* Use curly double quotes instead of "`" and "'" to quote filenames, etc in
3000  messages, and curly single right quote instead of straight ASCII apostrophe.
3001  Fall back to using straight ASCII versions if we can't represent them in the
3002  current character set.
3003
3004* Translation updates for Catalan, French, Slovak and Spanish.
3005
3006* Test suite:
3007
3008  + Add test coverage for interleaved diving data.
3009
3010  + Add testcase for diving data with topofil-style distance.
3011
3012Changes in 1.2.2 (2011-10-06):
3013
3014* aven:
3015
3016  + Replace the textured-mapped font drawing with an approach based on
3017    glBitmap.  This doesn't suffer from the character alignment issues which
3018    the textured-mapped fonts had, and is actually significantly faster on some
3019    machines.  The current font used is (mostly) fixed-width, but this isn't an
3020    inherent limitation - it was just the easiest font data to convert to a
3021    usable format.
3022
3023  + Fix assertion failure due to rounding differences on loading certain .3d
3024    files.  (ticket#26)
3025
3026  + Fix assertion failure when turning on 3D passages if they stick out higher
3027    or lower than any station.  (ticket#29)
3028
3029  + Fix grid not to disappear when blobs are turned on and blobs are drawn
3030    using lines.
3031
3032  + If a degree sign isn't available in the character set in use, transliterate
3033    it to 'dg' rather than skipping it.
3034
3035  + Fix message which should have been a degree sign but got lost in the format
3036    change for 1.2.0 and then got reassigned in 1.2.1.  Externally, this means
3037    that bearings in the status bar now have a degree sign after them if they
3038    are in degrees rather than nothing (1.2.0) or "&Hide Compass" (1.2.1).
3039
3040  + Fix print dialog to calculate the scale required for "One page" right
3041    before it calculates how many pages are required, so we don't end up
3042    something other than 1x1 being shown when the user changes settings.
3043
3044  + Update the calculations for picking a scale and for deciding how many
3045    pages are needed to take into account the change in info box height made
3046    in 1.2.1.
3047
3048Changes in 1.2.1 (2011-10-04):
3049
3050* Translation updates for US English.
3051
3052* aven:
3053
3054  + Rename the "depth bar" to "colour key" in documentation, menus, etc since
3055    it now shows colours for dates and errors as well as depths.
3056
3057  + In the colour key for "colour by date", change "No info" to "Undated".
3058
3059  + Remove the dark grey background from the colour key and just put a single
3060    pixel black border around the colours.  This is more in keeping with the
3061    other controls, and means the colours are now on a black background so more
3062    visually similar to the survey legs.
3063
3064  + Move the colour key's "Undated"/"Not in loop" entry down a little to
3065    improve the appearance.  Make each section a pixel taller.
3066
3067  + Allow "Colour by X" to be selected even if there's no data for X or only a
3068    single value of X used (the colour key is much smaller in these cases, and
3069    does still provide some useful information).
3070
3071  + Fix incorrect calculation of depth colouring for survey legs which straddle
3072    a depth band boundary.
3073
3074  + The scale bar, compass, clino, and colour key now all have right click
3075    menus which allow related actions to be performed (especially handy in
3076    full-screen mode).
3077
3078  + Improve the font used on the survey pane - it now contains the '-'
3079    character (so the clino now shows negative angles as negative, and dates
3080    in the colour key are now hyphenated).  Also the spacing and alignment
3081    are a little better, though still not perfect.
3082
3083  + PLT file export now handles spaces and control characters in station names
3084    by escaping them with '%' as in URLs.
3085
3086  + Pressing "Enter" on a station in the tree control now centres the view on
3087    that station.
3088
3089  + The scale bar is now cached in an OpenGL display list since it often gets
3090    redrawn exactly the same - for example, when rotating, panning, etc.
3091
3092  + Pressing "F5" forces all cached OpenGL drawing lists to be invalidated and
3093    then forces a refresh of the survey pane.  This is intended as a debugging
3094    aid - if pressing F5 changes the display at all then there's a missing case
3095    where a list should have been invalidated (please report if you find such
3096    a case as it is a bug).
3097
3098  + We now automatically track which OpenGL display lists need to be
3099    invalidated on window width or height changes.
3100
3101  + Increase scale bar maximum width from 65% of the window width to 75% as it
3102    was in 1.0.x (except that if that would overlap the clino we now reduce
3103    that proportion down until it reaches 50%).  Make the limit of zooming in
3104    the same as in 1.0.x.  (ticket#23)
3105
3106  + (Linux version): Previously wxGTK didn't really handle showing a dialog if
3107    the application was fullscreen (the dialog got opened under the main
3108    window!)  To work around this, aven would switch out of full screen mode
3109    temporarily while showing a dialog.  This case works properly with recent
3110    wxGTK, so disable our workaround with versions we know work.  Also, apply
3111    the workaround only for wxGTK, not everywhere except on Microsoft Windows
3112    as there's no reason to think we need it for other platforms.
3113
3114  + Grey out the "View North" action when we're already viewing North, and
3115    similarly for other compass points.
3116
3117  + (Mac OS X and Microsoft Windows versions): Fix missing newline to OpenGL
3118    info in the "About" dialog.
3119
3120  + Fix to set the correct filename on the root of the survey tree - previously
3121    the filename of the previous file loaded was used!
3122
3123  + The movie export code now works with newer versions of the FFmpeg libraries
3124    as well as still working with older versions.
3125
3126  + Fix mixed up messages - the print dialog now says "View" on the left
3127    subgroup of controls rather than some unrelated message.
3128
3129  + On printouts, combine the "Plan View"/"Elevation" info box field with the
3130    field which gives the bearing and reduce the height on the info box by the
3131    removed field, so it's now 3cm for plans and elevations, as for extended
3132    elevations.  Report the tilt angle for tilted elevations which it seems has
3133    been missing for ages (it's not in recent 1.0.x either).
3134
3135  + Tweak the exact positioning of informational text on printouts to look
3136    nicer and make better use of the available space.
3137
3138  + Add keyboard mnemonics to the "Plan" and "Elevation" buttons in the print
3139    dialog.
3140
3141  + Make the sign of the tilt angle for printouts consistent with the sign
3142    shown by the "clino" in the survey pane.
3143
3144  + In the "Print" dialog, when in plan view disable the "Plan view" button,
3145    and similarly for the "Elevation" button.
3146
3147  + (Microsoft Windows version): Sort out appearance of custom cursors.
3148
3149  + If a label isn't valid UTF-8 or CP1252, fall back to ISO8859-1.
3150
3151  + (Mac OS X version): F11 puts aven into full screen mode, but apparently
3152    you can't get out again easily, so add code to explicitly check for F11
3153    being pressed and toggle full screen.
3154
3155* (Linux version): Fix the RPM .spec file for where man pages now get installed
3156  and package aven.svg and the vim support files.  (Fixes from James Begley)
3157
3158* "make check" now performs several checks on the translation files.
3159
3160* More messages are now available to be translated.
3161
3162* cavern: Fix reporting of ranges of survey coordinates, which was broken by
3163  the message handling changes in 1.2.0.
3164
3165* Fix warning when compiling with GCC.
3166
3167* INSTALL: Mention building wxWidgets with --enable-unicode.  Mention using
3168  sudo for installing on Unix.
3169
3170* In the manual, replace the instructions for building from source with a
3171  pointer to the clearer instructions in INSTALL.
3172
3173* In the manual, make it clear that installing with administrator rights
3174  also applies to newer platforms than XP.
3175
3176* doc/TODO.htm: Update.
3177
3178Changes in 1.2.0 (2011-09-20):
3179
3180* Translation updates for Catalan, French, Romanian, Spanish, Slovak, and US
3181  English.
3182
3183* tests/smoke.tst: aven no longer requires an X display for --help or
3184  --version, so replace skip of this check with a check that this remains the
3185  case.
3186
3187* We now use the standard .po and .pot file formats for storing translations
3188  (rather than the Survex-specific messages.txt format), and then translate
3189  these into Survex's .msg format.
3190
3191* (Unix version): Move survex man page to section 7 (since it isn't documenting
3192  an actual command).
3193
3194* (Unix version): Write each generated man page to a temporary file, then
3195  atomically rename, to avoid leaving an empty or partial man page behind if
3196  docbook-to-man dies (1.1.16 had an empty cad3d.1, and we want to avoid a
3197  recurrence of that).
3198
3199* (Unix version): Default to installing docs into /usr/share/doc/survex rather
3200  than /usr/doc/survex.
3201
3202* aven:
3203
3204  + Fix handling of accented characters in the survey pane.
3205
3206  + Aven icon redrawn in SVG format - it's now a vector image which looks
3207    nicer at larger sizes.
3208
3209  + Explicitly request double-buffering, which seems to be needed for systems
3210    with GLX >= 1.3.
3211
3212  + Fix crash while trying to load certain .3d files.
3213
3214  + Movie export code updated to work with more recent versions of FFmpeg.
3215    Currently this is disabled in Microsoft Windows builds, pending getting the
3216    required libraries set up for building releases.
3217
3218  + Reporting of errors during movie export improved.
3219
3220  + Force playback speed to "x1" during movie export.
3221
3222  + Use stock IDs for buttons where appropriate - such buttons may now be
3223    rendered with icons on some platforms.
3224
3225  + If a label isn't valid UTF-8, treat it as CP1252 (the Microsoft superset of
3226    ISO8859-1).
3227
3228  + (Unix version): Remove special handling for toggling "full screen" on wxGTK
3229    as it's no longer required with modern versions.
3230
3231  + Don't redraw the survey on every mouse movement in the survey pane unless
3232    the measuring line is (or just was) active.  (ticket #17)
3233
3234* cavern:
3235
3236  + Drop "non-fatal" from the report of how many errors there were at the end
3237    of the run - it just confuses users - we won't even get here if there's a
3238    fatal error!
3239
3240  + Add --3d-version option to allow the user to specify the version of the 3d
3241    format to output.  (ticket#21)
3242
3243* img library:
3244
3245  + Make the highest and lowest valid values for img_output_version available
3246    in img.h as IMG_VERSION_MIN and IMG_VERSION_MAX.
3247
3248* (Mac OS X version): Fix buildmacosx.sh script to check where the temporary
3249  volume actually gets mounted.  Fix URL for downloading wxWidgets.
3250
3251Changes in 1.1.16 (2011-05-16):
3252
3253* Translation updates for German, Spanish, Italian, Portuguese, Brazilian
3254  Portuguese, and US English.
3255
3256* Use horizontal ellipses character rather than '...' and right arrow character
3257  rather than '->' where these characters are available.
3258
3259* (Unix version): Link with -lGL, if it exists, to support linking with gold or
3260  GNU ld --as-needed (Debian bug #615781).
3261
3262* img.c:
3263
3264  + Fix code typo for IMG_API_VERSION == 0 case.
3265
3266  + Fix code typo in code used when IMG_HOSTED isn't defined.
3267
3268* doc/TODO.htm: Remove entries which have now been done.
3269
3270* (Microsoft Windows version): aven: We now include all the available
3271  translations for messages from wxWidgets, which means that standard widgets
3272  will appear translated where available even if Survex messages aren't
3273  translated.
3274
3275Changes in 1.1.15 (2010-10-15):
3276
3277* aven:
3278
3279  + In the cavern log window, change the "Rerun" button to "Reprocess" to
3280    follow terminology in manual and elsewhere.  Fixes ticket#15.
3281
3282  + When displaying output from cavern, don't update the window after every
3283    line, but only when we don't have data from cavern pending.  Hopefully
3284    addresses ticket#12.
3285
3286  + If we aren't using GL_POINTS for blobs, draw them using a series of
3287    abutting lines rather than with gluDisk which is faster and gives a
3288    consistent shape.
3289
3290  + Check whether blobs and crosses actually render correctly as points/point
3291    sprites, and if they don't, fall back to drawing them with lines.  The
3292    best method is cached on disk, and rechecked automatically if the graphics
3293    hardware is changed or the drivers upgraded.
3294
3295  + Fix non-USE_FNT case to work again (it's limited to ISO-8859-1 characters
3296    though, so we still enable USE_FNT by default).
3297
3298  + Don't offer "All files" wildcard in presentation save dialog.
3299
3300  + (Microsoft Windows): Handle filenames with non-Latin1 characters in in
3301    more places.
3302
3303  + (Microsoft Windows): Quote filenames with spaces and metacharacters in
3304    when running cavern from aven.  Fixes ticket#11.
3305
3306* editwrap: (Microsoft Windows): Handle filenames with non-Latin1 characters.
3307
3308* diffpos: Handle files with duplicate labels in better - extend generates
3309  duplicate labels when it breaks a loop.
3310
3311* Enable eswap-break testcase now that diffpos handles duplicate station names.
3312
3313* New v7 of .3d format which stores survey dates as number of days since
3314  January 1st 1900, so we now support dates from 1900-2078 (rather than
3315  1970-2037) with a smaller file size.  The img API is now versioned - you
3316  can select the new "version 1" by compiling with -DIMG_API_VERSION=1, which
3317  gives the survey dates in days in days1 and days2 instead of as time_t
3318  values in date1 and date2.  Fixes ticket#14.
3319
3320* Consistently use http://survex.com/ rather than http://www.survex.com/ - the
3321  former has been the canonical name for some time, with www.survex.com just
3322  redirecting to it.
3323
3324* (Unix version): Use unlocked file I/O if available, which can be much faster
3325  in some cases (we don't need the locking as we don't do multithreaded file
3326  I/O).
3327
3328* (Mac version): Fix compilation failure due to clash with Point in Mac OS X
3329  headers.
3330
3331* (Mac version): buildmacosx.sh now works again.
3332
3333* Most tests weren't actually running any testcases (looks like a sh
3334  portability issue).  This is now fixed, and fortunately all tests still pass.
3335
3336* Include the extra .isl translation files for Innosetup in the source archive.
3337
3338Changes in 1.1.14 (2010-07-26):
3339
3340* Restore compatibility with wxWidgets 2.6 (1.1.13 required wxWidgets 2.8).
3341
3342* aven:
3343
3344  + After processing survey data, if there were warnings or errors, add a
3345    "Rerun" button to allow easy reprocessing after fixing problems.  If there
3346    were only warnings, also add an "OK" button to allow moving on to viewing
3347    the processed survey data (fixes ticket#13).
3348
3349  + Optimise updating of the cavern log window (hopefully fixes ticket#12).
3350
3351  + Fix links in cavern log window to link from exactly '<file>:<line>' (and
3352    not the ': ' after), and to make the title for the terminal the
3353    warning/error message.  Avoid false positives by checking that '<line>' is
3354    a number.
3355
3356  + Don't double escape the contents of href and target in links in the cavern
3357    log window.
3358
3359  + Improve handling of the splitter window, fixing behavioural glitches in
3360    various cases.
3361
3362  + Highlight stations matching any current search when a file is loaded.
3363    (ticket#9)
3364
3365  + (Mac version): Fix build issue due to Mac OS X polluting the global
3366    namespace with its own "Point" class.
3367
3368  + (Unix version): The Gnome print dialog has its own preview window so
3369    suppress ours if using the Gnome one.
3370
3371  + (Unix version): Link aven with -lGLU which SuSE Linux needs.
3372
3373  + (Microsoft Windows version): Fix handling of a double-click on the survey
3374    tree when built with wxWidgets >= 2.8.11.
3375
3376* cavern: Report relevant file and line number for three warnings which didn't
3377  give them before.
3378
3379* (Unix and Mac versions): configure: Update the wx-config probing code -
3380  wxmac-config etc aren't present with newer wxWidgets versions so there's no
3381  point looking for them now.
3382
3383* (Mac version): buildmacosx.sh: This script builds a diskimage with Survex in
3384  for easy installation.  Update it to work with the latest Survex versions
3385  (use WX_CONFIG not WXCONFIG; use a Unicode build of wxWidgets; if building a
3386  private wxWidgets, use 2.8.11 not 2.7.0-1).
3387
3388* manual:
3389
3390  + Correctly capitalise "GTK".
3391
3392  + Note that on Linux we only regularly test builds with the GTK+ version
3393    (change taken from 1.0).
3394
3395* Fixed the cad3d man page, which was an empty file in 1.1.13.
3396
3397Changes in 1.1.13 (2010-06-16):
3398
3399* Say "wxWidgets" instead of "wxWindows" consistently.
3400
3401* img.c: Fix small memory leak (filename_opened member).
3402
3403* cad3d, aven: Fix export to SVG when a label contains a '%' character.
3404
3405* aven:
3406
3407  + wxWidgets 2.6.0 or newer is now required.
3408
3409  + A "Unicode" build of wxWidgets is now supported.  An "ANSI" build may still
3410    work but hasn't been tested recently (all packaged versions of wxWidgets
3411    seem to be Unicode now).
3412
3413  + Fix potential uses of uninitialised variables which may have been causing
3414    occasional glitches when loading a file on start-up.
3415
3416  + Improvements to the handling of the font used for plotting labels and other
3417    text on the survey pane:
3418
3419    - Loading the font file is more efficient.
3420
3421    - Character spacing is improved.
3422
3423    - Default font is now anti-aliased.
3424
3425  + "About" dialog:
3426
3427    - Add "Copy" button to copy the system info to the clipboard for easier
3428      bug reporting.
3429
3430    - List OpenGL extensions last, since there are usually lots of them with a
3431      modern gfx card.
3432
3433    - Fix 100% CPU usage while the "About" dialog is open.
3434
3435  + Processing .svx files:
3436
3437    - Passing a .svx file on the command line now works better.
3438
3439    - Put the survey data log window in a splitter in the usual frame rather
3440      than opening a separate frame for it.
3441
3442    - Auto-scroll the log window until we've reported a warning or error.
3443
3444    - Fix small memory leak.
3445
3446  + The presentation filename now defaults to using the basename of the
3447    currently loaded dataset, but we always prompt before we first save with
3448    such a name.
3449
3450  + Reduce memory usage when saving a screenshot.
3451
3452  + Allow "Toggle Fullscreen" to work even if no survey is loaded now that we
3453    persist the window size (and maximised or fullscreen state) between
3454    invocations.
3455
3456  + Fix reporting of OpenGL errors.
3457
3458  + Fix glitches when tilting while looking East.
3459
3460  + Added Portuguese and Slovak translations of wxWidgets messages.
3461
3462* Documentation:
3463
3464  + Rationalise manual formats - replace PostScript with PDF and drop RTF.
3465
3466  + Drop the "alternative manual formats" self-extracting zip file - people
3467    will generally just want one of the formats, so downloading several
3468    together isn't very useful.
3469
3470  + 3dformat.htm: Update for v6 format (thanks to Mike McCombe).
3471
3472  + GPL.htm: Replace HTML version of licence with a link to the version on
3473    the FSF website.
3474
3475  + ChngeLog.htm: Stop generating an HTML version of the ChangeLog - it's too
3476    low level to be of interest to non-developers, and developers can look at
3477    the source code.
3478
3479* (Unix version): configure: New preferred name for specifying wx-config script
3480  is WX_CONFIG.  WXCONFIG still supported for compatibility.
3481
3482* (Linux version): Source RPM package dropped as you can just build an RPM
3483  package from the source tarball.
3484
3485* (Microsoft Windows version): The installer is now created with a newer
3486  version of InnoSetup, which gives a 10% smaller download.
3487
3488Changes in 1.1.12 (2007-02-07):
3489
3490* aven:
3491
3492  + Remember the window size or maximised/fullscreen state between invocations.
3493
3494  + Add options dialog to "Export" similar to the one for "Print".
3495
3496  + The "number of pages required" in the print dialog now updates when you
3497    change what is to be shown (underground legs/surface legs/station
3498    names/crosses).
3499
3500Changes in 1.1.11 (2006-11-25):
3501
3502* Updated Czech, Spanish, and Slovak translations.
3503
3504* (MacOS X version): Assorted OS X specific tweaks and fixes.
3505
3506* aven:
3507
3508  + Pick a smaller and clearer font for labels.
3509
3510  + Fix character spacing.
3511
3512  + Tweak display of bearing and elevation angles to look nicer with
3513    proportional fonts.
3514
3515  + Use the title from the 3d (or plt, etc) file for the window title
3516    rather than the filename.
3517
3518  + Show distances to 2 decimal places rather than the nearest integer.
3519
3520  + Only consider underground legs when calculating the depth bands and
3521    depth colouring.
3522
3523  + Add "Colour by Error".
3524
3525  + Add entry for "white" in date and error keys.
3526
3527  + When setting the view to a single point, don't change the scale.
3528
3529  + If reloading the same file, don't change the view
3530
3531  + Fix filetypes selector in open dialog.
3532
3533  + Fix the charset we use for aven in certain cases.
3534
3535  + Call msg_init before using msg_lang or it won't ever be set!
3536
3537  + Pass wx the full language code to initialise the C library locale.
3538
3539  + Fix bug in generating prefix tree view which could lead to a bogus
3540    leading dot on some survey names (bug probably introduced in 1.1.10).
3541
3542  + "New Presentation" now ensures that the side panel is open
3543
3544  + Fix updating of cached opengl lists when the view is reset to the
3545    default.
3546
3547* Ignore LANG if it starts with a digit to avoid problems with bogus value for
3548  LANG which AutoCAD installation seems to set on MS Windows.
3549
3550* (Unix version): configure: Allow SGMLTOOLS and DOCBOOK_TO_MAN to be
3551  specified.  Either/both can be set to ":".
3552
3553* dump3d: Report unknown (to dump3d) codes returned by img.
3554
3555* img library: Flag all stations as underground in the old "ASCII" .3d format.
3556
3557Changes in 1.1.10 (2006-07-14):
3558
3559* aven: Clicking on a survey name in the survey tree now highlights it in
3560  the map view.  Double-clicking zooms the view to show the clicked survey
3561  highlighted.  Clicking the root clears the highlighting and double-clicking
3562  the root restores the default view.  To expand/collapse a branch, click
3563  on the "[+]" or "[-]" icon to the left of the survey name.
3564
3565* aven: The measuring line can now measure to anywhere in plan or elevation
3566  view (not just to a station!)  In plan view the horizontal distance and
3567  bearing are shown, while in elevation view the vertical distance is shown.
3568
3569* aven: Moving the mouse over a station in the survey view now highlights
3570  that station in the survey tree (though it may not be visible if the
3571  survey(s) it is in aren't expanded).
3572
3573* aven: Clicking on a station to centre the view now moves the mouse pointer
3574  to the new location of the station (except on Mac OS X where this isn't
3575  allowed).
3576
3577* aven: Fix which presentation toolbar buttons are shown as depressed.
3578
3579* Fix infinite loop reading 3d files with LRUD data (bug introduced in 1.1.9).
3580
3581* vim files are now installed with the correct paths (bug introduced in 1.1.9).
3582
3583Changes in 1.1.9 (2006-07-04):
3584
3585* (Unix version): Install desktop files for aven and svxedit contributed to the
3586  Ubuntu package by Phil Bull, and corresponding pixmaps.
3587
3588* Fix img to filter out cross-sections which don't match the subsurvey (if
3589  specified).  The API now returns img_XSECT_END to mark the end of a
3590  passage rather than setting a flag on the last img_XSECT of the passage.
3591
3592* Enhance integration with the vim editor - this can now colour .err files, run
3593  cavern from vim and parse error output, and run aven from vim.  Tweak the
3594  existing vim mode for .svx files to fix a few minor bugs and add support for
3595  the new "*data passage" style.
3596
3597* aven: fix drawing of the "blob" end of the measuring line on graphics cards
3598  which can't draw large enough blobs for us.
3599
3600* aven: sort out confusion about what encoding everything is in which means
3601  that the distance measured by the measuring line actually gets displayed
3602  and also fixes problems with empty menu items in non-English locales in
3603  some cases.
3604
3605* aven: redraw grey background after a menu is closed over the aven window
3606  with no survey loaded.
3607
3608* aven: fix bug which caused printing to crash (introduced in 1.1.8).
3609
3610* aven: avoid crash on some machines when opening "About" dialog before having
3611  loaded a survey.
3612
3613* aven: Translate "Plan" and "Elevation" buttons in print view dialog.
3614
3615* (Unix version): aven: Fix character set handling of cavern output.
3616
3617* cavern: Report an error if a cross-section is specified for a station which
3618  doesn't exist.
3619
3620* Updated French and Italian translations.
3621
3622* (Unix version): aven: Fix "Can't open message file `en_US' using path
3623  `${prefix}/share/survex'" error.
3624
3625* Fix bug in 3d file reading on 64 bit platforms when used in STANDALONE mode
3626  (doesn't affect Survex itself, but other applications which use img.c should
3627  update their copy).
3628
3629* (Unix version): Add checks that wxWidgets is a non-unicode version (wx 2.6
3630  and later are caught by configure, whereas older wx versions are caught when
3631  trying to compile).
3632
3633Changes in 1.1.8 (2006.06.30):
3634
3635* Drop support for building with wxWidgets versions prior to 2.4.0
3636  (which was released on 2003-01-07).
3637
3638* aven: Printing through aven now uses settings from the "[aven]" section
3639  of print.ini, and support for hierarchical sections (using "like=")
3640  has been disabled.
3641
3642* aven: Change mouse actions to be compatible with those in Survex 1.0.
3643  The mousewheel now zooms in/out (it doesn't do anything in 1.0) and
3644  left drag is now smart about not rotating and zooming at the same
3645  time.
3646
3647* aven: Highlighting stations now happens as you type, and pressing
3648  "Enter" or clicking the "Find" button now pans and zooms to show the
3649  highlighted stations.
3650
3651* aven: Left-clicking away from a station now cancels measuring line.
3652
3653* aven: Setting view to North, South, East, or West is now animated like
3654  the tilt from plan to elevation.
3655
3656* aven: Fix presentation saving to also write "." for decimal points and
3657  presentation loading to accept either "." or ",".
3658
3659* (Unix version): aven: Add text for all toolbar items so that aven
3660  will work with the Gnome desktop preference for displaying toolbars as
3661  icons with text or just text (wxWidgets needs fixing first though).
3662
3663* (Unix version): aven: Remove the ability to detach the menu bar (yell
3664  if you actually used it and I'll restore it!)
3665
3666* aven: Add "all survey files" option to the "open file" dialog.
3667
3668* (MS Windows version): aven: Fix cursor keys to pan survey.
3669
3670* (MS Windows version): Built with wxWidgets 2.6.3 instead of 2.6.2.
3671
3672* (MS Windows version): Fix installer to work on Windows 2000 or XP if
3673  run by an unprivileged user.
3674
3675* (MS Windows version): Upgrade to the latest version of InnoSetup (the
3676  installer builder we use) and include new installer translations for
3677  UK English, Spanish, Brazilian Portuguese, Italian, Romanian, and Slovak.
3678
3679* (MS Windows version): aven: Include Catalan and Brazilian Portuguese
3680  translations of messages for wxWidgets (the GUI library we use).
3681
3682* aven: Disable "Highlight exported points" if there aren't any.
3683
3684* Updates to French translation from Michel Bovey.  Also updates to German,
3685  Italian, Catalan, Spanish, and Romanian translations.
3686
3687* (Unix version): test suite: fix smoke test to pass even without X running
3688  (it was meant to but the code had a bug).
3689
3690* aven: Check if OpenGL is available and exit cleanly with a helpful error
3691  if it isn't.
3692
3693* (Unix version): aven: Fix --help and --version to work without a working
3694  X display (provided it's built with wxWidgets 2.5.1 or newer).
3695
3696* aven: Automatically select the presentation tab of the notebook when the user
3697  selects "New Presentation" or "Open Presentation".
3698
3699* aven: Fix "Delete" in the presentation list to not get passed on (and so not
3700  reset to default view as well).
3701
3702* aven: Fix Ctrl+Insert in the presentation list not to segfault if the list is
3703  empty.
3704
3705* aven: Fix Cursor Up and Down in the presentation list to move the highlight
3706  up and down instead of being passed on and moving the survey.
3707
3708* aven: Improve SVG output compatibility.  Tested with Mozilla Firefox 1.5,
3709  Adobe's SVG browser plugin, Gimp 2.2.8, Gqview 2.0.0, Opera 8.5,
3710  Safari 2.0.3, and InkScape 0.42.
3711
3712* aven: Put a 5mm border around exported SVG files to allow for station markers
3713  and non-zero width lines.
3714
3715* aven: Fix crash when exporting as SVG or Sketch if labels or surface data
3716  was turned on.
3717
3718* aven: Actually close the file we're exporting which fixes problems with it
3719  not always being fully written.
3720
3721Changes in 1.1.7 (2005.10.18):
3722
3723* cavern: Add validity checking for dates in *date commands (with feature
3724  test in testsuite).  A date entered as just "year" or "year.month" now
3725  becomes a date range for the relevant period (previously it became a single
3726  date near the middle of that period).
3727
3728* extend: Fixed 2 uninitialised flags (should fix erratic behaviour on
3729  with MS Windows).
3730
3731* extend: Default output name for a file called input.3d is now input_extend.3d
3732  rather than just extend.3d (which was annoying if you wanted to extend
3733  several surveys in the same directory).
3734
3735* aven: OpenGL 2.0 always includes support for point sprites so rework
3736  our check for them to include that knowledge.
3737
3738* aven: Regenerate depth bar if user switches to/from metric units.
3739
3740* aven: Don't clear the "there" mark just because the mouse pointer has
3741  moved off a station.
3742
3743* aven: When processing a .svx file, put the resultant .3d file in the
3744  same directory (since that's where we then try to load it from).
3745
3746* aven: Fix labelling of date colouring on 32 bit platforms.
3747
3748* aven: If "colour by date" is on and we load a survey with no date info
3749  (or all surveyed on the same date) then set "colour by none".
3750
3751* aven: Make the error dialog modal and remove a signal handler once it
3752  has fired to prevent endless (or seemingly endless) cascades of error
3753  dialogs.
3754
3755* aven: Enforce a minimum object volume diameter of 1m to avoid problems
3756  if a survey file with only one station in is loaded.
3757
3758* aven: Fix problems with indicators disappearing when we're drawing
3759  blobs and/or crosses the slow (but always supported) way.  (Problem
3760  introduced in 1.1.6).
3761
3762* (Unix version): aven: Really stop setting extra toolbar margin when using
3763  GTK2.0.  The attempt to fix this in 1.1.3 failed because __WXGTK12__ is
3764  set for GTK+ 1.2 or *any later release* so is true for GTK+ 2.0 too!
3765
3766* (Unix version): aven: Add details of which of wxGTK, wxMotif, and wxX11
3767  we've been compiled with, and which GTK+/Motif version where appropriate.
3768
3769* (Unix version): Fixed build on Fedora Core 3.
3770
3771* documentation: Updates to 3d file format specification from Mike McCombe.
3772
3773Changes in 1.1.6 (2005.10.10):
3774
3775* (MS Windows version): Distribution is about a third smaller than 1.1.5
3776  (mostly because mingwm10.dll is no longer required).
3777
3778* aven: If aven is asked to load a .svx, .dat, or .mak file, run cavern on
3779  it, showing cavern's output in a window (with errors and warnings clickable
3780  to load the offending file into an editor), and then loading the resulting
3781  3d file.
3782
3783* aven: Added "Colour by Date" option.
3784
3785* aven: Disable "Colour by Depth" option if there's no elevation variation.
3786
3787* aven: Don't crash if trying to load a survey with no elevation variation.
3788  Instead turn off depth colouring.
3789
3790* aven: Export as HPGL added.
3791
3792* aven: Improved update of mouse coordinates and measuring line (thanks to
3793  Martin Green).
3794
3795* aven: Show the coordinates of either the mouse pointer or the nearest
3796  survey station to it (if there is one near enough).  Showing both was
3797  confusing and meant the status bar overflowed on smaller displays.
3798
3799* aven: When printing an extended elevation, don't show bearing and elevation.
3800
3801* aven: Don't lock "flat" surveys which aren't extended elevations - a
3802  flat survey with LRUD data isn't flat any more!
3803
3804* aven: When we have to draw blobs and crosses the slow way (because the
3805  graphics hardware doesn't support the fast way), draw them so that they
3806  should appear at the correct depth into the 3D scene instead of on top
3807  of everything else.
3808
3809* aven: Make "play presentation backwards" icon green to match the other
3810  presentation icons.
3811
3812* (MS Windows version): aven: Mouse clicks on the survey view now set the
3813  keyboard focus there.
3814
3815* (MS Windows version): aven: Fix first redraw of a newly loaded survey.
3816
3817* (MS Windows version): aven: Fix redrawing of measuring line.
3818
3819* cavern: Store dates for img_XSECT.
3820
3821* cavern: Fixed small one-off memory leak if you specify -o more than once.
3822
3823* (Unix version): Check environmental variable LC_MESSAGES when deciding what
3824  language to use for messages.
3825
3826* (MS Windows version): "Print" on a 3d file now prints through aven rather
3827  than the separate printer driver (Unix has done this for some time).
3828
3829* Removed old printer drivers.
3830
3831* img library: When creating a 3d file, ignore img_XSECT if we've been asked
3832  to write a file format version which doesn't support it.
3833
3834Changes in 1.1.5 (2005.09.20):
3835
3836* (MS Windows version): aven: Fixed crash on start-up (introduced in 1.1.4).
3837
3838* aven: Make blobs round like they are in Survex 1.0.
3839
3840* aven: If the graphics drivers don't support drawing blobs using OpenGL
3841  point markers, fall back to drawing filled circles.
3842
3843* aven: If the graphics drivers support it, draw crosses as texture mapped
3844  OpenGL point markers which is much faster.
3845
3846* aven: Cross size increased to match Survex 1.0.
3847
3848* aven: We must update which blobs are displayed if display of surface or
3849  underground legs is toggled.
3850
3851* cavern: Fix handling of a *solve followed by survey data, none of which is
3852  attached to the previous data.
3853
3854* cavern: Fixed "No survey data" error when a *solve is followed by another
3855  *solve (or the implicit solve at the end of processing) with no data between
3856  them.
3857
3858Changes in 1.1.4 (2005.09.19):
3859
3860* aven: Added Aven's icon to the "About" dialog.
3861
3862* aven: Use localised character for the decimal point (e.g. "," in most
3863  continental European countries).
3864
3865* aven: Previously the survey tree would get focus and then take keypresses
3866  (e.g. "P", "L", "Delete").  Now we pass most keypresses across so they
3867  operate on the cave, and transfer the input focus across when we do.
3868
3869* aven: Make pressing "Return" in the tree control expand/collapse a subtree.
3870
3871* aven: Speed up intialisation by delaying creation of OpenGL lists until
3872  they're needed.
3873
3874* aven: Added Mark Shinwell's bounding box with shadow of the survey.
3875
3876* aven: Disable the "Tubes" button/menu item when there's no LRUD data.
3877
3878* aven: Reworded "Restore Default Settings" as "Restore Default View".
3879
3880* (Unix version): aven: Set sensible default margins for printing and preserve
3881  any margin values the user specifies between runs (previously margins
3882  defaulted to 0 each time aven was run).
3883
3884* Documentation: Document *DATA PASSAGE in the manual.
3885
3886Changes in 1.1.3 (2005.09.07):
3887
3888* (Microsoft Windows version): Fixed build problems.
3889
3890* cavern: Allow OMIT character (-) for left/right/up/down.
3891
3892* aven: Remove an unnecessary menu separator.
3893
3894* aven: Fix "Find" and "Hide" toolbar buttons to work with GTK2.0.
3895
3896* aven: Make the tooltip for "Hide" show the number of found stations.
3897
3898* aven: If * or ? is used in a glob-style pattern, force a non-substring match.
3899
3900* aven: Enable "New Presentation" when there's a 3d file loaded, rather than
3901  when there's a presentation loaded.
3902
3903* aven: Make entrances green in side panel tree list to match green blobs used
3904  in cave view.
3905
3906* aven: Don't show surface labels if we're not showing surface data, etc.
3907
3908* aven: Merge "Start Rotation" and "Stop Rotation" into "Toggle Rotation" and
3909  make "Space" the key for this.  Keep Return working "Stop Rotation" so
3910  existing users are happy, but don't advertise it.
3911
3912* aven: Normalise filename by adding any extension used, and use the normalised
3913  filename for file history and window title.
3914
3915* (Unix version): aven: Stop setting extra toolbar margin when using GTK2.0
3916  as the toolbar buttons already have a sensible margin - the extra margin is
3917  only needed with GTK1.2.
3918
3919* aven: Fix handling of plumb legs in tube model.
3920
3921* aven: Fixed swapped L and R in tube model.
3922
3923* extend: Preserve UD cross-section information in extended elevation.
3924
3925* extend: Add new messages for John Pybus' enhancements.
3926
3927Changes in 1.1.2 (never formally released):
3928
3929* Added support for LRUD data in .svx files, in .3d files, and aven can
3930  now load and display it on screen and on printouts.  The ability to "fake"
3931  LRUD data in aven is gone for now but will reappear in some form later.
3932
3933* cavern: Removed support for writing Chasm's 3dx format.  We're going to
3934  fold any desirable missing chasm functionality into aven.
3935
3936* aven: Rearranged mouse actions as discussed on the mailing list.  Added
3937  cursors for each different mouse action to help the user learn what each
3938  does.  Also added cursors for the "compass" and "clino" as well as the
3939  scalebar to suggest to the user that they can be dragged to change the view.
3940
3941* (Unix version): aven: Don't segfault if LANG isn't a known language.
3942
3943* tests/smoketest.tst: If X windows is running, check that we can run aven
3944  with --help and --version.
3945
3946* tests/cavern.tst: Fixed cavern.tst to warn if it is skipping a test because
3947  no results are listed for it.  This revealed that there was a "newline" test
3948  which should have been called "badnewline", and was a broken testcase too!
3949  Fixed all these problems.
3950
3951* cavern: Applied Simeon Warner's patch for handling backcompass, backclino,
3952  and omitted forward compass/clino readings in Compass DAT files.  Added
3953  a feature test for this to the testsuite.
3954
3955* It no longer makes sense to have an option not to build aven or to build aven
3956  without OpenGL so remove old machinery for this from configure and the
3957  sources.
3958
3959* (Unix version): configure: Check if "-lXxf86vm" is needed.
3960
3961* configure: Better output for strcasecmp test.
3962
3963* aven: Fix crosses to work much better.  Not a total fix - their position
3964  in the Z buffer isn't correct and they're rather slow to plot.
3965
3966* aven: Don't regenerate the hittest grid every time the mouse moves while
3967  animating, which solves the mysterious pausing effect (thanks go to Martin
3968  Green for spotting this!)  Also clear all the status bar coordinates when
3969  animating.
3970
3971* aven: Sort out clashing menu shortcuts in some languages.
3972
3973* aven: Fixed compilation problem on x86_64
3974
3975* SPUD: Pruned out stuff which has been done or which is not actually relevant
3976  to this branch.
3977
3978* Merge various changes from 1.0 branch:
3979
3980  + aven: Port over "printing from aven" functionality.
3981
3982  + aven: Port over "export as" functionality,
3983
3984  + Add David Loeffler's vim mode for .svx files.
3985
3986* aven: Fix check for whether a label is behind us in perspective view.
3987
3988* aven: Don't use an opengl list for drawing the indicators - we typically make
3989  a new list each time we plot them anyway.
3990
3991* Remove lingering traces of support for RISC OS and pre-386 MSDOS
3992
3993* aven: Set icon on non-Windows platforms too.  This means that with
3994  WindowMaker on Unix you get an icon on the AppIcon by default.
3995
3996* configure: Update wxWindows checks to handle newer wx versions.
3997
3998* Make all maintainer perl scripts "use bytes;" to avoid utf-8 double encoding
3999  problems.  They also all require Perl 5.8 now (hopefully this isn't an issue
4000  for anyone building from CVS).
4001
4002* acinclude.m4: Quote macro name for fix autotools warning.
4003
4004* Documentation: "tilt up" is "'" not ",".
4005
4006* aven: Add support for mousewheels (to tilt the cave).
4007
4008* aven: Fixed twisted transitions to and from pitches in certain cases.
4009
4010* aven: Pick a sensible initial window size when the user's desktop is spread
4011  over more than one monitor (works best with wx2.5 or newer, but try to do
4012  better with wx2.4 or earlier as well).
4013
4014* aven: Initialise GfxCore slightly later to avoid visual glitch from notebook
4015  contents being visible before any survey is loaded.
4016
4017* aven: Allow a coloured texture to be used
4018
4019* aven: Don't initialise until we have data (to the user, this means the window
4020  is default colour (grey for most systems) not black until a survey is
4021  loaded).
4022
4023* aven: Fixed weird "shadowed" icons.
4024
4025Changes in 1.1.1 (2004-10-06):
4026
4027* (Microsoft Windows version): aven: Hopefully fix loading a survey file at
4028  startup.
4029
4030* aven: Delay loading the bitmap for the "About" dialog until it is first
4031  needed.  We want start up to be as quick as possible.
4032
4033Changes between 1.0.32 and 1.1.0 (never formally released):
4034
4035* NOTE: Survex 1.1.X releases are development snapshots made available for
4036  the purposes of allowing wider testing and getting more user feedback.  Once
4037  the code has stabilised the version number will be raised to 1.2.0.
4038
4039* aven: Now uses OpenGL for 3d rendering - you may need to install drivers if
4040  you're using Windows 95 - these can be obtained from:
4041  http://download.microsoft.com/download/win95upg/info/1/W95/EN-US/Opengl95.exe
4042
4043* aven: Solid passages - passage dimensions are currently inferred from
4044  the leg length (pretty effective as you can measure longer legs in
4045  larger passages).  Use of real LRUD data coming soon...
4046
4047* aven: Depth colouring is now continuously varying.
4048
4049* aven: Colour by depth can now be turned off (and there's the start of a
4050  framework for properly implementing colour by date, error, etc).
4051
4052* aven: Find stations moved onto the toolbar and now uses a simple wildcarded
4053  match (? matches any character, * matches any number of characters).
4054
4055* aven: We now use the status bar for coordinates, distances, etc to make
4056  better use of screen space.
4057
4058* aven: Full screen mode (F11).
4059
4060* aven: Perspective view.
4061
4062* aven: Context sensitive cursor shape - needs more work.
4063
4064* aven: Mouse actions changed (hopefully they're now more natural, but
4065  you may find the change disorientating - feedback wanted on this).
4066
4067* aven: Added "presentations" which allow you to set up fly-through paths
4068  and load/save/run them.
4069
4070* aven: A presentation can be exported as a movie file.
4071
4072* aven: Added Save screenshot facility.
4073
4074* aven: Depth fogging option.
4075
4076* aven: Added Smooth Lines option.
4077
4078* aven: Added Textured Walls option.
4079
4080* aven: If a survey has surface legs but no underground legs, default to
4081  showing the surface legs.
4082
4083* cavern: Dates given to *date are now stored in the 3d file.
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