[PATCH 2/2] Ticket #831 Fix

[Davide DB]

Hi Robert et al,

Could you explain me how to manage this (for me) common situation:

I dive with a back gas of 12/70 and a pscr but it could be on OC as well.
I cannot start the dive with that gas because is hypoxic up to 36m.
I use one of my deco gas for traveling up to a safe depth and then I switch
to my back gas or even another stage with 12/70.
I make a formal gas change on the surface so while editing my dive I would
add a gas change at t = 0.

BTW I was able to add a gas change at negative time in the current alpha
release...

davide at mobile
Il 09/mar/2015 09:20 "Robert Helling" <helling at atdotde.de> ha scritto:

> Hi,
>
> On 09.03.2015, at 06:49, Yosef Hamza <jo.adam.93 at gmail.com> wrote:
>
> But I think that the second patch needs some discussion.
>
>
> I don't think just displaying the initial gas changes is a solution as as
> you can read in the comments, some dive computers use such events to
> indicate the gas used and this would confuse the users if the event were
> displayed.
>
> Also I don't think there can be genuine gas _changes_ at t=0 so I doubt we
> need to separate those from the implicit ones (for example by making sure
> event times are really signed and reserving negative times for such
> invisible events).
>
> I think a better solution would be to make sure that if the user adds a
> gas change at t=0 (or negative times given the other patch) it overwrites
> the other gas change, i.e. when adding a gas change first delete all other
> gas changes at the same time.
>
> Best
> Robert
>
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> Physics
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