Improve satellite view and fused location telemetry

src/GlobeWidget.h

@@ -5,6 +5,7 @@
 #include <QElapsedTimer>
 #include <QImage>
 #include <QPoint>
+#include <QPixmap>
 #include <QSet>
 #include <QTimer>
 #include <QWidget>
@@ -23,6 +24,7 @@ public:
     void setReceiverLocation(double latitude, double longitude);
     void clearReceiverLocation();
     void setRinexStatus(const QString &status, bool error);
+    [[nodiscard]] QSet<QString> observedPrns() const { return m_observedPrns; }
 
 public slots:
     void setElevationMask(double degrees);
@@ -47,9 +49,10 @@ private:
     void drawVisibilityCone(QPainter &painter) const;
     void drawGraticule(QPainter &painter) const;
     void drawReceiver(QPainter &painter) const;
-    void drawSatellites(QPainter &painter) const;
+    int drawSatellites(QPainter &painter) const;
     double satelliteElevation(const SatellitePosition &satellite) const;
     void updateSatelliteAnimation();
+    void rebuildStaticLayer();
 
     QVector<SatellitePosition> m_satellites;
     QVector<SatellitePosition> m_satelliteMotionStart;
@@ -60,6 +63,12 @@ private:
     mutable QImage m_landTexture;
     mutable double m_landTextureYaw = 0.0;
     mutable double m_landTexturePitch = 0.0;
+    QPixmap m_staticLayer;
+    QSize m_staticLayerSize;
+    qreal m_staticLayerDevicePixelRatio = 0.0;
+    double m_staticLayerYaw = 0.0;
+    double m_staticLayerPitch = 0.0;
+    double m_staticLayerZoom = 0.0;
     QSet<QString> m_observedPrns;
     QString m_status = QStringLiteral("Konum bekleniyor");
     bool m_statusError = false;