Fix sending the correct pressure altitude for a pilot position

* Before this commit, only the true altitude was known for an aircraft situation. The pressure altitude was not available anywhere yet.
* This caused a wrong altitude in radar clients.
* We fix this reading the pressure altitude from the simulators and set it in the own aircraft situation.
* MS Flight Simulators have the pressure altitude in the APIs available.
* For X-Plane and emulated simulator, we need to calculate it from the pressure at sea level.
* Finally, we use the new available pressure altitude to send it to the FSD server.

Maniphest Tasks: Ref T223

src/blackgui/editors/situationform.cpp

@@ -9,8 +9,10 @@
 
 #include "situationform.h"
 #include "ui_situationform.h"
+#include "blackmisc/pq/pressure.h"
 #include "blackmisc/pq/angle.h"
 #include "blackmisc/stringutils.h"
+#include "blackmisc/logmessage.h"
 #include <QDoubleValidator>
 
 using namespace BlackMisc;
@@ -29,14 +31,19 @@ namespace BlackGui
 
             ui->le_Bank->setValidator(new QDoubleValidator(-180.0 + CAngleUnit::deg().getEpsilon(), 180.0, 3, ui->le_Bank));
             ui->le_Pitch->setValidator(new QDoubleValidator(-180.0 + CAngleUnit::deg().getEpsilon(), 180.0, 3, ui->le_Pitch));
+            ui->le_Pressure->setValidator(new QDoubleValidator(980.0, 1046.0, 2, ui->le_Pressure));
 
             connect(ui->hs_Bank, &QSlider::valueChanged, this, &CSituationForm::bankSliderChanged);
             connect(ui->hs_Pitch, &QSlider::valueChanged, this, &CSituationForm::pitchSliderChanged);
+            connect(ui->hs_Pressure, &QSlider::valueChanged, this, &CSituationForm::pressureSliderChanged);
             connect(ui->le_Bank, &QLineEdit::editingFinished, this, &CSituationForm::bankEntered);
             connect(ui->le_Pitch, &QLineEdit::editingFinished, this, &CSituationForm::pitchEntered);
+            connect(ui->le_Pressure, &QLineEdit::editingFinished, this, &CSituationForm::pressureEntered);
             connect(ui->tb_ResetBank, &QToolButton::clicked, this, &CSituationForm::resetBank);
             connect(ui->tb_ResetPitch, &QToolButton::clicked, this, &CSituationForm::resetPitch);
+            connect(ui->tb_ResetPressure, &QToolButton::clicked, this, &CSituationForm::resetPressure);
             connect(ui->pb_Set, &QPushButton::clicked, this, &CSituationForm::changeAircraftSituation);
+            connect(ui->pb_SetEnvironment, &QPushButton::clicked, this, &CSituationForm::changeAircraftSituation);
             connect(ui->comp_Coordinate, &CCoordinateForm::changeCoordinate, this, &CSituationForm::changeAircraftSituation);
         }
 
@@ -50,9 +57,13 @@ namespace BlackGui
 
         CAircraftSituation CSituationForm::getSituation() const
         {
-            CAircraftSituation s(ui->comp_Coordinate->getCoordinate());
+            const BlackMisc::Geo::CCoordinateGeodetic position = ui->comp_Coordinate->getCoordinate();
+            CAircraftSituation s(position);
             s.setBank(this->getBankAngle());
             s.setPitch(this->getPitchAngle());
+
+            CAltitude pressureAltitude(position.geodeticHeight().toPressureAltitude(this->getBarometricPressureMsl()));
+            s.setPressureAltitude(pressureAltitude);
             return s;
         }
 
@@ -84,6 +95,20 @@ namespace BlackGui
             return CAngle::normalizeDegrees180(vd, RoundDigits);
         }
 
+        double CSituationForm::getBarometricPressureMslMillibar() const
+        {
+            const QString v(ui->le_Pressure->text().replace(',', '.'));
+            bool ok;
+            double vd = v.toDouble(&ok);
+            if (!ok) { vd = 1013.25; }
+            return vd;
+        }
+
+        CPressure CSituationForm::getBarometricPressureMsl() const
+        {
+            return CPressure (getBarometricPressureMslMillibar(), CPressureUnit::mbar());
+        }
+
         void CSituationForm::setReadOnly(bool readonly)
         {
             ui->comp_Coordinate->setReadOnly(readonly);
@@ -128,6 +153,13 @@ namespace BlackGui
             ui->le_Pitch->setText(QString::number(value));
         }
 
+        void CSituationForm::pressureSliderChanged(int value)
+        {
+            const int pressure = qRound(this->getBarometricPressureMslMillibar());
+            if (value == pressure) { return; } // avoid roundtrips
+            ui->le_Pressure->setText(QString::number(value));
+        }
+
         void CSituationForm::bankEntered()
         {
             const double ad = this->getBankAngleDegrees();
@@ -161,5 +193,22 @@ namespace BlackGui
             ui->le_Pitch->setText("0");
             ui->hs_Pitch->setValue(0);
         }
+
+        void CSituationForm::pressureEntered()
+        {
+            const double pd = this->getBarometricPressureMslMillibar();
+            QString n = QString::number(pd, 'g', 4 + RoundDigits);
+            if (ui->le_Pressure->validator()) { dotToLocaleDecimalPoint(n); }
+            ui->le_Pressure->setText(n);
+            const int pi = qRound(pd);
+            if (pi == ui->hs_Pressure->value()) { return; } // avoid roundtrips
+            ui->hs_Pressure->setValue(pi);
+        }
+
+        void CSituationForm::resetPressure()
+        {
+            ui->le_Pressure->setText("1013.00");
+            ui->hs_Pressure->setValue(1013);
+        }
     } // ns
 } // ns

src/blackgui/editors/situationform.h

@@ -74,12 +74,21 @@ namespace BlackGui
             //! Get pitch angle
             double getPitchAngleDegrees() const;
 
+            //! Get barometric pressure at mean sea level
+            BlackMisc::PhysicalQuantities::CPressure getBarometricPressureMsl() const;
+
+            //! Get pressure at mean sea level
+            double getBarometricPressureMslMillibar() const;
+
             void bankSliderChanged(int value);
             void pitchSliderChanged(int value);
+            void pressureSliderChanged(int value);
             void bankEntered();
             void resetBank();
             void pitchEntered();
             void resetPitch();
+            void pressureEntered();
+            void resetPressure();
 
             QScopedPointer<Ui::CSituationForm> ui;
         };

src/blackgui/editors/situationform.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>386</width>
-    <height>324</height>
+    <width>512</width>
+    <height>439</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -37,7 +37,7 @@
         <property name="frameShadow">
          <enum>QFrame::Raised</enum>
         </property>
-        <layout class="QGridLayout" name="gl_Situation" columnstretch="1,1,1,3">
+        <layout class="QGridLayout" name="gl_Situation" columnstretch="1,0,0,0">
          <item row="0" column="0">
           <widget class="QLabel" name="lbl_Bank">
            <property name="text">
@@ -110,7 +110,7 @@
            </property>
           </widget>
          </item>
-         <item row="2" column="0">
+         <item row="3" column="0">
           <spacer name="vs_Situation">
            <property name="orientation">
             <enum>Qt::Vertical</enum>
@@ -145,7 +145,7 @@
            </property>
           </widget>
          </item>
-         <item row="2" column="3" alignment="Qt::AlignRight">
+         <item row="3" column="3" alignment="Qt::AlignRight">
           <widget class="QPushButton" name="pb_Set">
            <property name="text">
             <string>set</string>
@@ -183,6 +183,112 @@
      </layout>
     </widget>
    </item>
+   <item>
+    <widget class="QGroupBox" name="gb_Environment">
+     <property name="title">
+      <string>Environment</string>
+     </property>
+     <layout class="QVBoxLayout" name="verticalLayout">
+      <item>
+       <widget class="QFrame" name="comp_Environment">
+        <property name="frameShape">
+         <enum>QFrame::NoFrame</enum>
+        </property>
+        <property name="frameShadow">
+         <enum>QFrame::Raised</enum>
+        </property>
+        <layout class="QGridLayout" name="gl_Environment" columnstretch="1,0,0,0">
+         <item row="0" column="0">
+          <widget class="QLabel" name="lbl_Pressure">
+           <property name="text">
+            <string>Pressure MSL (980 - 1046 mbar)</string>
+           </property>
+           <property name="wordWrap">
+            <bool>false</bool>
+           </property>
+          </widget>
+         </item>
+         <item row="0" column="1">
+          <widget class="QLineEdit" name="le_Pressure">
+           <property name="text">
+            <string>1013.00</string>
+           </property>
+          </widget>
+         </item>
+         <item row="0" column="2">
+          <widget class="QToolButton" name="tb_ResetPressure">
+           <property name="text">
+            <string>...</string>
+           </property>
+           <property name="icon">
+            <iconset resource="../../blackmisc/blackmisc.qrc">
+             <normaloff>:/diagona/icons/diagona/icons/cross-white.png</normaloff>:/diagona/icons/diagona/icons/cross-white.png</iconset>
+           </property>
+          </widget>
+         </item>
+         <item row="0" column="3">
+          <widget class="QSlider" name="hs_Pressure">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <property name="minimum">
+            <number>980</number>
+           </property>
+           <property name="maximum">
+            <number>1046</number>
+           </property>
+           <property name="singleStep">
+            <number>1</number>
+           </property>
+           <property name="value">
+            <number>1013</number>
+           </property>
+           <property name="orientation">
+            <enum>Qt::Horizontal</enum>
+           </property>
+           <property name="invertedAppearance">
+            <bool>false</bool>
+           </property>
+           <property name="invertedControls">
+            <bool>false</bool>
+           </property>
+           <property name="tickPosition">
+            <enum>QSlider::TicksAbove</enum>
+           </property>
+           <property name="tickInterval">
+            <number>1</number>
+           </property>
+          </widget>
+         </item>
+         <item row="1" column="3" alignment="Qt::AlignRight">
+          <widget class="QPushButton" name="pb_SetEnvironment">
+           <property name="text">
+            <string>set</string>
+           </property>
+          </widget>
+         </item>
+         <item row="1" column="0">
+          <spacer name="verticalSpacer">
+           <property name="orientation">
+            <enum>Qt::Vertical</enum>
+           </property>
+           <property name="sizeHint" stdset="0">
+            <size>
+             <width>20</width>
+             <height>40</height>
+            </size>
+           </property>
+          </spacer>
+         </item>
+        </layout>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
   </layout>
  </widget>
  <customwidgets>