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core: let pressure_to_altitude return a depth_t

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Also un-inline it. There seems no reason for exporting the
implementation details in the header file.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2024-12-14 21:03:23 +01:00 • committed by Michael Keller
parent 4237cb9999
commit 1d14b03935
5 changed files with 13 additions and 11 deletions
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2
core/plannernotes.cpp
View file

@ -443,7 +443,7 @@ void diveplan::add_plan_to_notes(struct dive &dive, bool show_disclaimer, planne
{
const char *depth_unit;
int altitude = (int) get_depth_units((int) (pressure_to_altitude(surface_pressure)), NULL, &depth_unit);
int altitude = (int) get_depth_units(pressure_to_altitude(surface_pressure).mm, NULL, &depth_unit);
buf += casprintf_loc(translate("gettextFromC", "ATM pressure: %dmbar (%d%s)<br/>\n</div>\n"), surface_pressure, altitude, depth_unit);
}

5
core/units.cpp
View file

@ -204,3 +204,8 @@ depth_t m_or_ft(int m, int ft)
int mm = prefs.units.length == units::METERS ? m * 1000 : feet_to_mm(ft);
return depth_t::from_base(mm);
}
depth_t pressure_to_altitude(pressure_t pressure)
{ // returns altitude in mm above sea level
return depth_t::from_base(static_cast<int32_t>(log(1013.0 / pressure.mbar) * 7800000));
}

5
core/units.h
View file

@ -436,10 +436,7 @@ static inline pressure_t altitude_to_pressure(int32_t altitude) { // altitude i
return pressure_t { .mbar = int_cast<int32_t> (1013.0 * exp(- altitude / 7800000.0)) };
}
static inline int32_t pressure_to_altitude(pressure_t pressure)
{ // returns altitude in mm above sea level
return (int32_t) (log(1013.0 / pressure.mbar) * 7800000);
}
depth_t pressure_to_altitude(pressure_t pressure);
/*
* We keep our internal data in well-specified units, but

4
desktop-widgets/diveplanner.cpp
View file

@ -163,7 +163,7 @@ void DivePlannerWidget::settingsChanged()
}
ui.tableWidget->view()->setItemDelegateForColumn(DivePlannerPointsModel::DEPTH, new SpinBoxDelegate(0, maxDepth, 1, this));
ui.atmHeight->blockSignals(true);
ui.atmHeight->setValue((int) get_depth_units((int) pressure_to_altitude(DivePlannerPointsModel::instance()->getSurfacePressure()), NULL, NULL));
ui.atmHeight->setValue((int) get_depth_units(pressure_to_altitude(DivePlannerPointsModel::instance()->getSurfacePressure()).mm, NULL, NULL));
ui.atmHeight->blockSignals(false);
ui.dateEdit->setDisplayFormat(QString::fromStdString(prefs.date_format));
@ -175,7 +175,7 @@ void DivePlannerWidget::atmPressureChanged(int pressure_in_mbar)
pressure_t pressure { .mbar = pressure_in_mbar };
DivePlannerPointsModel::instance()->setSurfacePressure(pressure);
ui.atmHeight->blockSignals(true);
ui.atmHeight->setValue((int) get_depth_units((int) pressure_to_altitude(pressure), NULL, NULL));
ui.atmHeight->setValue((int) get_depth_units(pressure_to_altitude(pressure).mm, NULL, NULL));
ui.atmHeight->blockSignals(false);
}

8
desktop-widgets/tab-widgets/TabDiveInformation.cpp
View file

@ -442,12 +442,12 @@ void TabDiveInformation::updateTextBox(int event) // Either the text box has bee
} else { // i.e. event == COMBO_CHANGED, that is, "m" or "ft" was selected from combobox
// Show estimated altitude
bool ok;
double convertVal = 0.0010; // Metric conversion fro mm to m
pressure_t pressure = { .mbar = ui->atmPressVal->text().toInt(&ok,10) };
if (ok && ui->atmPressVal->text().length()) { // Show existing atm press as an altitude:
if (prefs.units.length == units::FEET) // For imperial units
convertVal = mm_to_feet(1); // convert from mm to ft
ui->atmPressVal->setText(QString::number((int)(pressure_to_altitude(pressure) * convertVal)));
double convertVal = (prefs.units.length == units::FEET) ?
mm_to_feet(1) : // convert from mm to ft
0.001; // Metric conversion fro mm to m
ui->atmPressVal->setText(QString::number((int)(pressure_to_altitude(pressure).mm * convertVal)));
}
}
break;