Commit graph

122 commits

Author SHA1 Message Date
Anton Lundin
0b8462bd58 planning: Add option to have last stop at 6m/20ft
When diving in areas where there are risk of boats passing above you,
its common practise to do the last stop at 6m to better stay out of
harms way. When doing o2-deco, it doesn't matter for the deco time if
you are doing all the time at 6m, due to that you don't have any inert
gas in your breathing gas.

Signed-off-by: Anton Lundin <glance@acc.umu.se>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-04-02 10:55:19 -07:00
Robert C. Helling
c083ec45a9 Make relative times default in planner 2
In planning you usually plan lengths of segments rather than runtimes to
leave a level.

This patch superseeds a previous one with a similar name and (even more)
broken spacing.

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-03-26 19:30:38 -07:00
Dirk Hohndel
8a5792d473 Manually add gas changes to a dive
Create a little widget that lists all the gases / tanks we know about and
allow the user to pick one of them.

Turns out that add_event only added events at the end of the list - but we
treat that list as chronologically sorted. So I fixed that little
mis-feature as well.

This does raise the question whether we need the inverse operation
(removing a gas change). And if there are other things that we should be
able to manually edit, now that we have the infrastructure for this neat
little context menu...

See #60 -- this doesn't address all of the issues mentioned there, but at
least deals with the 'headline' of the feature request...

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-03-17 20:04:25 -07:00
Lubomir I. Ivanov
4401132836 Fix potentially broken white space truncation on certain Windows versions
Testing the Planner in Subsurface on a Windows XP SP3 installation,
shows corrupted UTF-8 strings in the case of Cyrillic locales, but
possibly others as well. Instead limited to the Planner, this affects
the entire application.

After some examination it appears that <ctype>'s isspace() in MSVC
on the tested version of Windows is broken for some UTF-8 characters,
after enabling the user locale using: setlocale(LC_ALL, "");

For example, characters such as the Cyrillic capital "BE" are defined as:
0xD091, where isspace() for the first byte returns 0x08, which is the
bytemask for C1_SPACE and the character is treated as space.
After a byte is treated as space, it is usually discarded from a UTF-8
character/string, where if only one byte left, corrupting the entire
string.

In Subsurface, usages of string trimming are present in multiple
locations, so to make this work try to use GLib's g_ascii_isspace(),
which is a locale agnostic version of isspace().

Affected versions of Windows could be everything up to XP SP3,
but not apparently Vista.

Reported-by: Sergey Starosek <sergey.starosek@gmail.com>
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-03-07 12:01:47 -08:00
Dirk Hohndel
d2f9ee8d45 Planner: don't use the planned dive for relative start time
The existing code has an embarrassing error in its logic. It picked the
last dive in the table and made sure that the relative start time was
either N minutes after 'now' or N minutes after the last dive ends,
whichever is later.

But once the planned dive has been added to the dive list (so once we have
a first depth and time entry, that last dive now is the planned dive. And
every time focus left the start time field the start time would be
recalculated relative to the end of the dive we are currently planning.

With this patch we instead simply remember the number of the last dive
just as we create the dive plan and use that to look up the end time of
previous dive. I could have just stored that end time but I figured maybe
there could be other reasons to go back to the last dive before the
planned dive, so this seemed cleaner.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-27 10:22:51 -08:00
Lubomir I. Ivanov
97a43003c4 Planner: use time.h and utc_mktime() to retrive the current time (no TZ)
This should do the same as the GTimeZone variant.
Also works on Windows.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-27 09:58:53 -08:00
Robert C. Helling
e5b73d9cb7 Planner: fix wait time calculations
The problem is that when we reach the gas change depth and compute the
stop time, no gas change event is created yet but time_at_last_depth tries
to determine the gas for the stop from events.

So instead we pass o2 and he as parameters of that function and calculate
the wait time based on that information.

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-23 16:15:18 -08:00
Dirk Hohndel
ac38aa0243 Planner: fix incorrect gas change event
We stored the He permille instead of the He percentage. But for most
casual testing this was hidden by the previous bug.

Reported-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-19 15:10:01 -08:00
Dirk Hohndel
8527720794 Planner: Start calculations with gas 0 instead of air
The planner had a fatal flaw in that it ALWAYS started with AIR, even when
clearly claiming to use the correct gas. We only picked up correct gases
from events, but not at the beginning of the dive (where there is no
event).

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-19 14:28:07 -08:00
Dirk Hohndel
6b458ad7fa Ensure that planner warnings get shown before calculations are run
Linus pointed out that the warning wasn't shown until the main loop got
control back, so even a gtk_widget_show_all() doesn't really help to make
sure that things are shown right then.

This commit adds a little loop to handle all pending gtk_events before
exiting the show_error() function. Now the warning should be shown BEFORE
a potentially slow calculation gets started.

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-14 07:51:25 -08:00
Dirk Hohndel
d1ee250524 Make planner.c warning consistent
Just a tiny change to make them look more consistent.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-13 23:14:55 -08:00
Dirk Hohndel
fd703f3ca0 Support deeper stops and longer dive notes in planner
Since we now support dives all the way down to 400m we should also support
deeper stops. And of course this can create insanely long dive plans, so
make sure there is plenty of space for those.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-13 23:02:05 -08:00
Dirk Hohndel
0cde0eff10 Rewriting the error handling in planner.c
Printf is not a way to issue warnings and errors. This is a very late
addition but seems necessary for a viable release of the planner.

This also adds one artificial limit and two warnings:

a) no dives deeper than 400m
b) warning of potentially very long calculation times for dives longer
   than 3h (180min) before the ascent and dives deeper than 150m

It also creates quite a number of new strings that need to be translated
(and marks a few existing ones for translation as well).

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-13 23:02:00 -08:00
Dirk Hohndel
5a540fb9d1 Remove rounded O2 in air
To quote Linus, gentle as always:

 Stuff like this is just BS.

 Don't do it. You already fixed the bug with matching gas change events,
 so adding this idiotic workaround no longer fixes anything, and its
 confusing and actively misleading.

 It's not even percent. It's still permille, just rounded. So it's a
 nonsensical number and a misleading name. Just delete it as the abortion
 it is. It is only going to cause more problems later.

 Just use the correct value.

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-12 22:28:31 -08:00
Dirk Hohndel
5e93469f35 Fix gas handling in planner
Two separate bugs.

a) Air cylinders were created with o2=209 and no other value set.
sanitize_gasmix() turned that into o2=0 which meant that this cylinder was
now identified as "nodata", i.e., unset.
We now set a fake cylinder name to deal with that issue.

b) the gaschange event is inherited from libdivecomputer and therefore
only supports 1 percent granularity for o2 and h2. Since we didn't round
when assigning the value we ended up with air being stored as o2=20 he=0
which of course then didn't match air anymore (which we have defined as
208 <= o2 <= 210).
We now use o2=210 for air in the planner and carefully round the permille
values whenever we convert into percent - and compare gases with percent
granularity as well.

A better fix for b) would be to change the Subsurface event to not simply
copy the libdivecomputer behavior and use percent granularity but support
permille instead. But this closely before the 3.0 release that seemed like
a far too invasive change to make - the changes to the planner should have
no impact outside the planner module.

Reported-by: Chris Lewis <chrislewis915@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-12 21:12:17 -08:00
Dirk Hohndel
9d9eff718b Hopefully last change to po files
While this is a pain for everyone, I decided not to edit out the code
reference noise - after all this is supposed to help translators find
where the text is used in case it's unclear how to translate something.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-09 10:39:11 -08:00
Linus Torvalds
926fcef2a1 Do more dive fixup for each dive computer
In commit b6c9301e58 ("Move more dive computer filled data to the
divecomputer structure") we moved the fields that get filled in by the
dive computers to be per-divecomputer data structures.

This patch re-creates some of those fields back in the "struct dive",
but now the fields are initialized to be a reasonable average from the
dive computer data.  We already did some of this for the temperature
min/max fields for the statistics, so this just continues that trend.

The goal is to make it easy to look at "dive values" without having to
iterate over dive computers every time you do.  Just do it once in
"fixup_dive()" instead.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-08 18:22:30 -08:00
Dirk Hohndel
61861d2611 Clean up the handling of surface pressure
There are two ways to look at surface pressure. One is to say "what was
the surface pressure during that dive?" - in that case we now return an
average over the pressure reported by the different divecomputers (or the
standard 1013mbar if none reported any).

Or you want to do specific calculations for a specific divecomputer - in
which case we access only the pressure reported by THAT divecomputer, if
present (and fall back to the previous case, otherwise).

We still have lots of places in Subsurface that only act on the first
divecomputer. As a side effect of this change we now make this more
obvious as we in those cases pass a pointer to the first divecomputer
explicitly to the calculations.

Either way, this commit should prevent us from ever mistakenly basing our
calculations on a surface pressure of 0 (which is the initial bug in
deco.c that triggered all this).

Similar changes need to be made for other elements that we currently only
use from the first divecomputer, i.e., salinity.

Reported-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-09 08:01:59 +11:00
Dirk Hohndel
79e55b019b Add a more stronly worded warning / disclaimer for dive planning
This is a late string change, but I think this may be a valid exception of
the string freeze...

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-08 22:53:42 +11:00
Sergey Starosek
5cc6e21064 Increase the buffer for the gas text in planner
UTF-8 strings could create more characters.

Signed-off-by: Sergey Starosek <sergey.starosek@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-03 21:27:25 +11:00
Dirk Hohndel
de0cdf28b2 Merge branch 'po-files'
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

Conflicts:
	po/nb_NO.po
	po/ru_RU.po
2013-02-03 18:08:26 +11:00
Dirk Hohndel
7f59026dbf Distinguish the two uses of "Gas Used" for translation purposes
One is about the amount, the other about the specific type of gar that was
used.

Reported-by: Sergey Starosek <sergey.starosek@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-03 18:03:10 +11:00
Dirk Hohndel
3e426283b4 Increase the buffer for the gas text in planner
Translations that use UTF-8 could easily create more characters than I had
initially specified.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-03 08:44:51 +11:00
Jan Schubert
99dbd667bf Fixing SP handling in planner, adding event
This moves some double/floating handling for po2 to plain integer. There
are still non int values around (also for phe and po2) in the plot area.

Signed-off-by: Jan Schubert <Jan.Schubert@GMX.li>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-03 07:07:12 +11:00
Jan Schubert
59cfa5c427 Fixing SP handling in planner, adding event
Fixing the SP change event and introducing a bailout scenario.

I decided not to use a event showing SP=0.0 nor using a gaschange event as
is in fact there is no gas change related to bailing out itself. If there
is also a gaschange for the event it will be displayed anyway.

Signed-off-by: Jan Schubert <Jan.Schubert@GMX.li>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-03 07:06:38 +11:00
Jan Schubert
057253c4eb Fixing SP handling in planner, adding event
Fixes bug in planner which prevents from bailing out (setpoint = 0).

Also introduces events for changing setpoints in planner.
It also makes the eventtype for gaschange slightly more consistent by
changing it from SAMPLE_EVENT_GASCHANGE (O2 only) to
SAMPLE_EVENT_GASCHANGE2 (O2/He). But Subsurface treats them both the same
(the distinction comes from libdivecomputer).

Signed-off-by: Jan Schubert <Jan.Schubert@GMX.li>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-03 07:05:16 +11:00
Lubomir I. Ivanov
60f9c338e9 planner.c: Use g_time_zone_find_interval()
current_time_notz():
Attempt to use g_time_zone_find_interval() to retrieve a
timezone interval, which is then passed to g_time_zone_get_offset()

Reported and tested-by: Sergey Starosek <sergey.starosek@gmail.com>
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-02-02 00:05:03 +11:00
Dirk Hohndel
aa55bda944 Don't allow to plan dives out of order
The planned dive always has to be the last dive in the dive list. To make
sure of that we interpret the relative start time to be relative to either
the current time or the end of the last dive, whichever is later.

This fixes a bug where we would delete the wrong dive and get our data
structures confused by planning multiple dives out of order.

Reported-by: Sergey Starosek <sergey.starosek@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-31 23:50:35 +11:00
Dirk Hohndel
e3a8ed5183 Massive cleanup
Mostly coding style and whitespace changes plus making lots of functions
static that have no need to be extern. This also helped find a bit of code
that is actually no longer used.

This should have absolutely no functional impact - all changes should be
purely cosmetic. But it removes a bunch of lines of code and makes the
rest easier to read.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-30 08:31:53 +11:00
Dirk Hohndel
a61877d1d4 Add missing strings for translations
Mostly in new code, but some of them are strings in older code that have
been missed in the past.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-29 20:32:56 +11:00
Dirk Hohndel
55b3fd12a8 Make dive planner more useful for closed circuit diving
Add a sample at time 0 to allow for a pO2 from the start of the dive.
Remember the last pO2 so it doesn't have to be repeated (and the right
thing happens for the planned part of the dive).

This still doesn't allow us to change the setpoint at a certain depth
(which would be analogous to being able to switch to a certain gas at a
certain depth in OC plans), but with this commit it's already usable.

This commit also fixes a couple of small bugs in commit b8ee3de870fa
("Dive planning for closed circuit rebreather") where a pO2 of 1.1 was
hardcoded in one place, throwing off all plan calculations and integer
math was used to calculate a floating point value (leading to most pO2
values actually used being 1.0).

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-28 21:39:25 -08:00
Jan Schubert
9df9fc088d Dive planning for closed circuit rebreather
This misses a single issue to be used as a base for further discussion:
The CC setpoint is used for the next segment, not the one specified for. I
also have in mind to modify the existing code to use setpoints specified
in mbar and plain integer instead of float values.

Signed-off-by: Jan Schubert <Jan.Schubert@GMX.li>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-28 18:31:30 -08:00
Linus Torvalds
77ece3fccb Clean up gtk combo box handling
This cleans up our handling of combo boxes and all the duplicated
completion logic, and simplifies the code.

In particular, we get rid of the deprecated GtkComboBoxEntry.  While it
made some things easier, it made other things harder.  Just using
GtkComboBox and setting that up correctly ends up being simpler, and
also makes the logic work with gtk-3.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-28 13:17:44 -08:00
Henrik Brautaset Aronsen
d1262848d8 Fix compile error in planner.c
Linus seems to have been too eager in the dc refactoring: a diveplan
doesn't have a divecomputer.

Signed-off-by: Henrik Brautaset Aronsen <subsurface@henrik.synth.no>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-24 08:47:34 -08:00
Linus Torvalds
b6c9301e58 Move more dive computer filled data to the divecomputer structure
This moves the fields 'duration', 'surfacetime', 'maxdepth',
'meandepth', 'airtemp', 'watertemp', 'salinity' and 'surface_pressure'
to the per-divecomputer data structure.  They are filled in by the dive
computer, and normally not edited.

NOTE! All actual *use* of this data was then changed from dive->field to
dive->dc.field programmatically with a shell-script and sed, and the
result then edited for details.  So while the XML save and restore code
has been updated, all the displaying etc will currently always just show
the first dive computer entry.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-23 12:55:33 -08:00
Dirk Hohndel
aa3eb364bc Add GFlow/GFhigh settings in dive planner
The planner interactively responds to changes to the GFlow and GFhigh in
the dialog and calculates an appropriate profile. If there is a previous
dive within the 48 hours prior to this dive then its saturation is
correctly taken into account if the gradient factors are changed - so if
they are aggressively lowered it is possible to start the dive with
already an existing ceiling (simply increase the surface interval to 'fix'
that).

Once the plan is accepted the GF values are reset to the current
preferences. This can cause the ceiling in the plot to change and the deco
stops to no longer match the ceiling - but that's a logical consequence of
the ability to change a temporary copy of GFlow/GFhigh during the planning
process and not the actual preferences (which would be counter intuitive,
I think).

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-16 15:40:38 -08:00
Dirk Hohndel
2cee400ad1 Correctly mark divelist changed after accepting dive plan
Commit 293126257b20 ("Mark divelist as changed if user accepts planned
dive") had the correct commit message but an incorrect implementation.

This moves the mark_divelist_changed() call into the GTK_RESPONSE_ACCEPT
clause where it belongs.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-16 14:44:11 -08:00
Dirk Hohndel
348c590ac6 Mark divelist as changed if user accepts planned dive
When the user clicks OK in the dive planner and the dive is added to the
divelist the divelist needs to be marked as changed so Subsurface prompts
the user to save the file before quitting.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 17:35:29 -08:00
Dirk Hohndel
db8de4233d Calculate the gas used during the planned dive
This works on the assumption that the diver uses the deco SAC rate while
on a calculated deco stop and the bottom SAC rate during the rest of the
dive (including the time they move from deco stop to deco stop).

This is making the planning function mostly useful for open circuit
diving.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 17:35:14 -08:00
Dirk Hohndel
c3a08ff056 Add diveplan to the dive notes
This makes it easy to print out a dive plan - it's simply stored in the
notes of the simulated dive we create.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 17:34:51 -08:00
Dirk Hohndel
189cba7fd2 Add code to enter SAC rates for dive planning
This just provides the infrastructure to enter the data, nothing is
calculated, yet.

This adds a new get_thousandths() helper function so we can enter
information of the 'mili-' type as decimal values. So things like
"14.5 l/min" or "0.75 cuft/min" are parsed correctly and converted
into a ml value.

In the process of implementing that I also fixed a bug introduced in
commit ab7aecf16e ("Simplify dive planning code") which broke the
get_tenth() function.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 17:31:27 -08:00
Dirk Hohndel
417391a801 Add small helper function to make planner gui function easier to read
This is just preparation for the next set of changes.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 17:31:03 -08:00
Jan Schubert
322410a845 Trivial pressure related fixes
This patch removes the need for the "string" pressurebuf in planner.c.

It also adds a unit to the partial pressures displayed in the mouse
overlay which are always displayed in bar.

BTW: Has anyone seen a pO2 shown in PSI?

Signed-off-by: Jan Schubert <Jan.Schubert@GMX.li>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 10:13:33 -08:00
Dirk Hohndel
3b7d68c091 Correct the start time of planned dives
Subsurface follows the lead of most divecomputers to use times without
timezone - so all times are implicitly assumed to be local time of the
dive location; so in order to give the current time in that way we
actually need to add the timezone offset.

Instead of relying on OS specific members of struct tm we use the glib
timezone functions to get the timezone offset for us. Of course, the
function used to do this is only in glib 2.26 or newer, which once again
means that Debian stable won't be supported. But since that doesn't build
other parts of Subsurface, either, I think I'll live with that.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-15 10:09:42 -08:00
Jan Schubert
90d3c5614a Centralising and redefining values as integers
This patch centralizes the definition for surface pressure, oxygen in
air, (re)defines all such values as plain integers and adapts calculations.

It eliminates 11 (!) occurrences of definitions for surface pressure and
also a few for oxygen in air.

It also rewrites the calculation for EAD, END and EADD using the new
definitons, harmonizing it for OC and CC and fixes a bug for EADD OC
calculation.

And finally it removes the unneeded variable entry_ead in gtk-gui.c.

Jan

Signed-off-by: Jan Schubert <Jan.Schubert@GMX.li>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-14 20:12:40 -08:00
Dirk Hohndel
1ea445102e Correctly show the planned dive in the divelist
Previously we would simply show the first dive in the divelist - which
worked fine in the default sort by trip setting and assuming that there
are no dives from the future in the divelist.

With this commit we actually find the correct dive in the divelist and
select it instead. If you sort by depth you will see the dive move around
in the divelist, but it will stay selected and visible in the profile.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-13 21:01:52 -08:00
Linus Torvalds
868a2cc090 Split up preference data structure definition into 'pref.h'
.. and rename the badly named 'output_units/input_units' variables.

We used to have this confusing thing where we had two different units
(input vs output) that *look* like they are mirror images, but in fact
"output_units" was the user units, and "input_units" are the XML parsing
units.

So this renames them to be clearer.  "output_units" is now just "units"
(it's the units a user would ever see), and "input_units" is now
"xml_parsing_units" and set by the XML file parsers to reflect the units
of the parsed file.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-10 20:30:32 -08:00
Linus Torvalds
88313f1077 Clean up duplicated depth interpolation
We have several places where we interpolate the depth based on two
samples and the time between them. Some of them use floating point, some
of them don't, some of them meant to do it but didn't.

Just use a common helper function for it. I seriously doubt the floating
point here really matters, since doing it in integers is not going to
overflow unless we're interpolating between two samples that are hours
apart at hundreds of meters of depth, but hey, it gives that rounding to
the nearest millimeter. Which I'm sure matters.

Anyway, we can probably just get rid of the rounding and the floating
point math, but it won't really hurt either, so at least do it
consistently.

The interpolation could be for other things than just depth, but we
probably don't have anything else we'd want to interpolate. But make the
function naming generic just in case.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-09 16:17:57 -08:00
Dirk Hohndel
c0ce218df4 Add support to planner to use additional gases during the ascent
This change ended up being quite a bit bigger than expected as it
uncovered a number of bugs in the existing code.

The planner now handles gas changes correctly by creating (and later
parsing) events in the simulated divecomputer. At the end of the dive
specified in the input form the algorithm starts with the deepest
interesting depth: either the first stop below our ceiling or the deepest
depth at which we can change gases. It then traverses all the stop and all
the gas change depth and at each stage ensures that we are allowed to
ascend further before going on.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-09 16:01:15 -08:00
Dirk Hohndel
fbea5e31ca Allow special entries in diveplan for available gases
An entry with no time is considered special and not considered when
constructing the profile.

This should allow us to add support for two different ways of adding
information about available gas:

changedepth 0 gasmix
0 0 gasmix @ po2

The first syntax basically says "during the ascent, switch to this gas at
this depth.
The second one says "switch to this gas once the pO2 allows for it"

Neither of these are implemented, yet, but this commit is necessary in
order for the rest of the code to ignore entries with a time field of 0.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-08 15:03:37 -08:00
Dirk Hohndel
e903fa966e Set a default surface pressure for dive plan and allow simplistic print
This commit makes sure we have a reasonable default surface pressure (we
need an input field for that).

It also adjusts the debug level settings so that compiling this with
make CLCFLAGS=-DDEBUG_PLAN=3
will print out an almost usable dive plan.

This is of course still lacking air consumption calculations and will show
deco stops that we just transit through (if the ceiling lifts far enough
during the transition to an intended stop that this stop can be skipped;
this sometimes happens for the first stop (haven't seen it for a later
one). But it's better than nothing, I guess.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-08 14:05:25 -08:00
Dirk Hohndel
2ffeff9a2c Do planned deco stops in multiples of 1 minute
We may want to make this configurable, but I haven't seen any software
that doesn't do deco stops in full minutes.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-08 13:59:48 -08:00
Dirk Hohndel
1bec821c73 Fix the deco calculation in the dive planner
The existing code incorrectly started all calculation at the depth at the
end of the first segment. So if you went to 50m in 5min in your first
segment, you incorrectly got 5 minutes at 50m (instead of a progression
from 0 to 50m, over 5 minutes).

This commit fixes that and now gives us planned dives that then match what
is shown in the profile.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-08 13:54:29 -08:00
Dirk Hohndel
bad7882ae1 Improve travel logic code for the ascent in the planner
This shouldn't change the the actual stops we do or the travel time how we
get there, but it makes the code more logical. From the end depth of the
planned dive we have ONE transition to the first stop depth (which may be
the surface). And then for every stop we (potentially) have a wait and
travel to the next stop.

Once we are in the while loop, we know that we are at a stop level, so
there is no point to keep checking if we first need to transition to the
stop.

It does create one additional improvement: if we don't need any stops at
all, then we don't transition to the first stop and then from there to the
surface. We do it in one step. The overall profile / traveltime remains
the same, we just drop one intermediate sample on the way.

This also improves a few ugly (and in one case, wrong) debug statements.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-08 13:53:57 -08:00
Dirk Hohndel
8eb92c576c Really prevent time travel in planner dive edit
Commit c92e4535a6de "Prevent time travel in planner dive edit" almost got
it right but had a stupid think-o. This commit should fix it the right
way. If the duration that is passed in is before the previous timestamp,
then this is most likely intended to be a relative time.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-08 13:43:25 -08:00
Jan Schubert
d864f5cdfa Fix deco planning for low oxygen mixes
Not sure about the future of the current planner.c as we have new
approaches now but as this annoyed me for some days now I just decided
to come up with this trivial stuff to make my life easier.

More a cosmetic fix than a patch, but actually it fixes a bug one might
face planing a dive using low oxygen mixes and where stop levels at just
90m, 60m, 30m and nothing in between will not allow subsurface to finish
a deco ceiling which ends before the universe collapses. Allows to plan
20min@130m using a 10/70 now (f.i.).

Signed-off-by: Jan Schubert / Jan.Schubert@GMX.li
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-08 12:04:59 -08:00
Robert C. Helling
67d59ff018 Rewrite of the deco code
o) Instead of using gradient factors as means of comparison, I now use
   pressure (as in: maximal ambient pressure).

o) tissue_tolerance_calc() now computes the maximal ambient pressure now
   respecting gradient factors. For this, it needs to know about the
   surface pressure (as refernce for GF_high), thus gets *dive as an
   argument. It is called from add_segment() which this also needs *dive
   as an additional argument.

o) This implies deco_allowed_depth is now mainly a ambient-pressure to
   depth conversion with decorations to avoid negative depth (i.e. no deco
   obliation), implementation of quantization (!smooth => multiples of 3m)
   and explicit setting of last deco depth (e.g. 6m for O2 deco).

o) gf_low_pressure_this_dive (slight change of name), the max depth in
   pressure units is updated in add_segment. I set the minimal value in
   buehlmann_config to the equivalent of 20m as otherwise good values of
   GF_low add a lot of deco to shallow dives which do not need deep stops
   in the first place.

o) The bogus loop is gone as well as actual_gradient_limit() and
   gradient_factor_calculation() and large parts of deco_allowed_depth()
   although I did not delete the code but put it in comments.

o) The meat is in the formula in lines 147-154 of deco.c. Here is the
   rationale:

   Without gradient factors, the M-value (i.e the maximal tissue pressure)
   at a given depth is given by ambient_pressure / buehlmann_b + a.

   According to "Clearing Up The Confusion About "Deep Stops" by Erik C.
   Baker (as found via google) the effect of the gradient factors is no
   replace this by a reduced affine relation (i.e. another line) such that
   at the surface the difference between M-value and ambient pressure is
   reduced by a factor GF_high and at the maximal depth by a factor
   GF_low.

   That is, we are looking for parameters alpha and beta such that

   alpha surface + beta = surface + gf_high * (surface/b + a - surface)

   and

   alpha max_p + beta = max_p + gf_low * (max_p/b + a - max_p)

   This can be solved for alpha and beta and then inverted to obtain the
   max ambient pressure given tissue loadings. The result is the above
   mentioned formula.

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-08 08:59:20 -08:00
Dirk Hohndel
e3bdbb7c0f Fix gas handling in the planner
The dive will start with gas 0. If things change during the planned part
of the dive, this will be represented by an event. Use the last gas for
the ascent.

Obviously this still doesn't handle deco gases, but at least we now no
longer switch back to the first gas after the planned part of the dive.

This also adds quite a bit of debugging code to be able to trace what's
happening in the planner.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-08 08:52:48 -08:00
Dirk Hohndel
bf395ebf45 Avoid pointless calls to dive planner
Stupid Gtk. Seriously. So in order to get a notification if the user
selects the drop down for the gas with the mouse I need to connect to the
"changed" signal for the combobox. But that also fires whenever the user
types something into the GtkEntry. Which means we once again get called
for all kinds of silly partial names.

Instead we want to handle the manual entry in the "focus-out" callback
(the user has hit tab or something else to move away from the GtkEntry -
let's assume that this is the text he wants us to use) and only respond to
the changed signal on the combobox if the user selected something from the
dropdown.

The easiest way to do that (I think) is to check the text with the strings
stored in the model. If this indeed matches a string stored in the model
then most likely this is something the user selected from the dropdown.
But more importantly if it isn't in the model, then we KNOW that this is
just a partial string that was typed in. And we can ignore that one.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-08 08:48:13 -08:00
Dirk Hohndel
7a18edddbb Prevent time travel in planner dive edit
If the user enters an absolute time that is before the previous waypoint,
silently assume that this is a relative time.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-07 16:22:38 -08:00
Dirk Hohndel
ae3886b987 Make Cancel work in dive planner dialog
With this a partially planned dive is indeed thrown away when hitting
Cancel.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-07 14:52:31 -08:00
Linus Torvalds
ab7aecf16e Simplify dive planning code
This simplifies the dive planning code by:

- allowing empty gas mixes (which means "pick previous gas")

- avoiding unnecessary strdup/free calls (this requires us to handle
  "const char *" in the parsers, but that was already true from a code
  standpoint, just not a type one)

- re-use the "plan()" function for a successful dive plan, rather than
  open-coding the dive plan segment handling.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-07 14:10:44 -08:00
Dirk Hohndel
e6afd055d8 Fix two bugs with the gas entry code in the dive planner
First, I forgot to pass in the idx into the gas callback function - this
way for the dynamically created dives we always used air for anything but
the first segment.

Second, when selecting a gas from the drop down (with the mouse or by
typing), the GtkEntry doesn't receive that text and therfore we never
picked up those gases.

We now also track the 'changed' event for the GtkComboBox, but never add
the text we get their to the completions (as by definition they are
already there).

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-07 12:53:54 -08:00
Dirk Hohndel
d396f4afd8 Add simple debug function to planner
This allows you to dump the diveplan structure

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-07 12:49:07 -08:00
Dirk Hohndel
d3570508b1 Move planner UI into planner.c
There should be NO other changes in this commit - just moving the code and
adjusting the includes (and adding the entry point to display-gtk.h).

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-07 11:23:14 -08:00
Dirk Hohndel
989cf37fcf Remove the now obsolete hard coded test_plan
This was just a crutch to get something out there for people to play with.
With the ability to input a plan in place this is now obsolete.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-07 08:51:26 -08:00
Dirk Hohndel
1b0ddfbbe2 Dive planner: add gas change events & start dive with the correct gas
When incrementally building dives with gas changes there are still some
serious issues and inconsistencies. But at least now the gases in the dive
we create appear to be correct.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-07 08:38:55 -08:00
Dirk Hohndel
85ed689dc0 Support relative times in diveplanner input "on the fly" mode
This had gotten lost when updating the profile on the fly.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-07 08:13:23 -08:00
Dirk Hohndel
be9be189f7 Display dive profile of the dive we plan, as we plan it
As the user enters data into the entry fields, that data is validated and
as soon as there is enough data we start constructing a dive profile,
including the final ascent to the surface, including required deco stops,
etc.

This commit still has some serious issues.

- when data is input that doesn't validate, we just print a warning to
  stdout - instead we need to change the backgroundcolor of the input
  field or something.
- when we switch to the last dive in order to show the profile we don't
  actually search for the last dive - we just show the first one in the
  tree. This works for the default sort order but is of course wrong
  otherwise

I'm sure there are many other bugs, but I want to push it out where it is
right now for others to be able to take a look.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-06 22:15:03 -08:00
Dirk Hohndel
c8830ffe48 Add the ability to cache our deco state
We kept reduing all the deco calculations, including the previous dives
(if any) for each segment we add to the dive plan. This simply remembers
the last stage and then just adds to that.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-06 11:40:21 -08:00
Linus Torvalds
92a8fde9c2 Do a minimal hook-up of the dive plan tree view to the
actual planning

Yes, you can actually enter your segments now.

No, it's not wonderfully user-friendly.  If you don't enter enough
segments to create a dive plan, it will just silently fail, for example.
And the <tab> key that should get you to the next editable segment
doesn't.  And so on.  But it kind of works.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-05 15:51:57 -08:00
Dirk Hohndel
cca847791a First stab at simplistic dive planning
This comes with absolutely no gui - so the plan literally needs to be
compiled into Subsurface. Not exactly a feature, but this allowed me to
focus on the planning part instead of spending time on tedious UI work.

A new menu "Planner" with entry "Test Planner" calls into the hard-coded
function in planner.c. There a simple dive plan can be constructed with
calls to plan_add_segment(&diveplan, duration, depth at the end, fO2, pO2)

Calling plan(&diveplan) does the deco calculations and creates deco stops
that keep us below the ceiling (with the GFlow/high values currently
configured). The stop levels used are defined at the top of planner.c in
the stoplevels array - there is no need to do the traditional multiples of
3m or anything like that.

The dive including the ascents and deco stops all the way to the surface
is completed and then added as simulated dive to the end of the divelist
(I guess we could automatically select it later) and can be viewed.

This is crude but shows the direction we can go with this. Envision a nice
UI that allows you to simply enter the segments and pick the desired
stops.

What is missing is the ability to give the algorithm additional gases that
it can use during the deco phase - right now it simply keeps using the
last gas used in the diveplan.

All that said, there are clear bugs here - and sadly they seem to be in
the deco calculations, as with the example given the ceiling that is
calculated makes no sense. When displayed in smooth mode it has very
strange jumps up and down that I wouldn't expect. For example with GF
35/75 (the default) the deco ceiling when looking at the simulated dive
jumps from 16m back up to 13m around 14:10 into the dive. That seems very
odd.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2013-01-04 23:56:55 -08:00