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Profile: Fix the Initial Gasmix.

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Fix the initial gasmix that is shown in the tank bar of the profile.

Also add a meaningful gas name for gases with negative values for
percentages.

@bstoeger: This is a side effect of the `event_loop` functionality
introduced as part of #4198. In the case of an `event_loop("gasmix")`
this does not take into account the edge case where there is no
gaschange event at the very beginning of the dive, and the first gasmix
is implicitly used as the starting gasmix. This happens for planned and
manually added dives, but also for some dive computers.
We are using the
same kind of loop in a number of other places in `core/profile.cpp`,
`core/dive.cpp`, `core/gaspressures.cpp`, and `profile-widget/tankitem.cpp`,
and I am wondering if we should be converting these to use
`gasmix_loop` instead to avoid being bit by this special case?

Signed-off-by: Michael Keller <github@ike.ch>
This commit is contained in:
Michael Keller 2024-08-27 01:03:20 +12:00
parent 38fe08e5e1
commit db516b6d4e
9 changed files with 171 additions and 140 deletions
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2
profile-widget/divepercentageitem.cpp
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@ -115,7 +115,7 @@ void DivePercentageItem::replot(const dive *d, const struct divecomputer *dc, co
continue;
double value = item.percentages[tissue];
struct gasmix gasmix = loop.next(sec);
struct gasmix gasmix = loop.at(sec).first;
int inert = get_n2(gasmix) + get_he(gasmix);
color = colorScale(value, inert);
if (nextX >= width)