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core: add notion of gas-type to core/gas.c

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Create a gastype enum, which describes the type of a gas.
For now: air, nitrox, normoxic, trimix and oxygen.

This probably should be made configurable.

The gas types will be used to bin gasses in the statistics
module.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2020-11-23 19:19:21 +01:00 • committed by bstoeger
parent 1d93926700
commit 1270d94701
2 changed files with 42 additions and 0 deletions
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30
core/gas.c
View file

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
#include "gas.h"
#include "pref.h"
#include "gettext.h"
#include <stdio.h>
#include <string.h>
@ -139,3 +140,32 @@ void fill_pressures(struct gas_pressures *pressures, const double amb_pressure,
}
}
}
enum gastype gasmix_to_type(struct gasmix mix)
{
if (gasmix_is_air(mix))
return GASTYPE_AIR;
if (mix.o2.permille >= 980)
return GASTYPE_OXYGEN;
if (mix.he.permille == 0)
return mix.o2.permille >= 230 ? GASTYPE_NITROX : GASTYPE_AIR;
if (mix.o2.permille <= 180)
return GASTYPE_HYPOXIC_TRIMIX;
return mix.o2.permille <= 230 ? GASTYPE_NORMOXIC_TRIMIX : GASTYPE_HYPEROXIC_TRIMIX;
}
static const char *gastype_names[] = {
QT_TRANSLATE_NOOP("gettextFromC", "Air"),
QT_TRANSLATE_NOOP("gettextFromC", "Nitrox"),
QT_TRANSLATE_NOOP("gettextFromC", "Hypoxic Trimix"),
QT_TRANSLATE_NOOP("gettextFromC", "Normoxic Trimix"),
QT_TRANSLATE_NOOP("gettextFromC", "Hyperoxic Trimix"),
QT_TRANSLATE_NOOP("gettextFromC", "Oxygen")
};
const char *gastype_name(enum gastype type)
{
if (type < 0 || type >= GASTYPE_COUNT)
return "";
return translate("gettextFromC", gastype_names[type]);
}

12
core/gas.h
View file

@ -22,6 +22,16 @@ struct gasmix {
static const struct gasmix gasmix_invalid = { { -1 }, { -1 } };
static const struct gasmix gasmix_air = { { 0 }, { 0 } };
enum gastype {
GASTYPE_AIR,
GASTYPE_NITROX,
GASTYPE_HYPOXIC_TRIMIX,
GASTYPE_NORMOXIC_TRIMIX,
GASTYPE_HYPEROXIC_TRIMIX,
GASTYPE_OXYGEN,
GASTYPE_COUNT
};
struct icd_data { // This structure provides communication between function isobaric_counterdiffusion() and the calling software.
int dN2; // The change in fraction (permille) of nitrogen during the change
int dHe; // The change in fraction (permille) of helium during the change
@ -59,6 +69,8 @@ extern fraction_t get_gas_component_fraction(struct gasmix mix, enum gas_compone
extern void fill_pressures(struct gas_pressures *pressures, double amb_pressure, struct gasmix mix, double po2, enum divemode_t dctype);
extern bool gasmix_is_air(struct gasmix gasmix);
extern enum gastype gasmix_to_type(struct gasmix mix);
extern const char *gastype_name(enum gastype type);
#ifdef __cplusplus
}