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The gas compressibility is such a specialized thing that I really prefer
having it separate.
This keeps Robert's Redlich-Kwong equation as-is, but let's experiment
with other models soon...
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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As it turns out, the van der Waals equation gives results that are
numerically not really useful, so we use the Redlich Kwong equation
which is, according to Wikipedia, much more accurate, which can be confirmed
given the empirical values for air.
As opposed to the previous approach with a look-up table, this takes
into account the actual gasmix. This always assumes the gas to be at
20 degrees Centigrade.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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There was a reported case of an import of a dive that gave a salinity of
35g/l. This is an actual salinity (an amount of salt in the water) but
for subsurface the salinity is actually the density of the water. So for
too small values of the salinity add the density of fresh water.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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We could in theory make this dependent on the gasmix, but for now let's
just assume (incorrectly) that everything we breathe acts like air.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This actually didn't make a difference for the common case, since our
simplified gas compressibility model had a compressibility factor of 1.0
up to 200 bar, and increased smoothly from there. As a result, the
common 2400 and 3000 psi workpressures didn't really see an effect from
this.
Not taking compressibility into account does kind of make sense for
cylinder naming, since the cylinder may be used for different gases with
very different compressibility characteristics.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This marks "surface_volume_multiplier()" static in preparation for
changing it to use an actual honest-to-goodness compressibility
estimation. Without that, it wasn't obvious that the function wasn't
used in other random places.
Also, remove the "wet_volume()" function. It was unused, but more
importantly, it was wrong. Yes, it was the inverse of "gas_volume()",
but when you calculate wet volumes from the imperial sizes, you don't
actually use the "real" gas volume, you use the idealized one.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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We (ab)use fake_dc() to create a pleasing profile for a manually added
dive. Based on it's intended use, fake_dc() simply handed back a dc
structure that pointed at staticly allocated samples - that's obviously
(now that I think about it) going to blow up in my face if I edit a
manually added dive more than once.
So now we have an option for fake_dc() to actually allocate the samples -
this way the rest of the code can treat these samples as we would treat
samples created any other way. We can free them and replace them with a
new set.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Fixes #1003
Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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At the moment, if we have, say, dives ... 100, 101 and 102 and we merge 101 and
102, we get a list numbered ... 99, 100, 102. This is, probably, an
undesired behavior. The patch simple chooses lower of both dive numbers instead
of higher one.
Signed-off-by: Salvador Cuñat <salvador.cunat@gmail.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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This probably is a serious bug, found by cppcheck.
Original code had paren's in probably the wrong place!
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Tank icons were shown at incorrect spots on the profile
when the DiveEventItem object held a pointer to a struct
event even after the struct event at that address had
been freed. When internalEvent is a pointer to freed
memory, internalEvent->time.seconds could have all kinds
of crazy values, which get used in member function
DiveEventItem::recalculatePos to place the tank at bad
x coordinates.
The DiveEventItem(s) no longer store a pointer to memory
that they do not own. This way, no matter how the path of
execution arrives into slot recalculatePos, we never need
fear that the DiveEventItem will dereference a garbage
pointer to a struct event.
Fixes #968
Signed-off-by: K. Heller <pestophagous@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Fix obvious spelling mistakes in comments (and one error message).
Yes, this is trivial but I saw one while reviewing some of the code
and after that decided to run code through some tools.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
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And adapt a new CMakeLists.txt file for it. On the way I've also
found out that we where double-compilling a few files. I've also
set the subsurface-core as a include_path but that was just to
reduce the noise on this commit, since I plan to remove it from
the include path to make it obligatory to specify something like
include "subsurface-core/dive.h"
for the header files. Since the app is growing quite a bit we ended
up having a few different files with almost same name that did
similar things, I want to kill that (for instance Dive.h, dive.h,
PrintDive.h and such).
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
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Linus Torvalds
Robert C. Helling
Dirk Hohndel
Miika Turkia
Salvador Cuñat
Stephen Hemminger
K. \"pestophagous\" Heller
Lubomir I. Ivanov
Tomaz Canabrava