first commit

2022-10-20 20:29:11 +08:00
commit 4d531f8044
3238 changed files with 1387862 additions and 0 deletions
@@ -0,0 +1,69 @@
+// heading_indicator.hxx - a vacuum-powered heading indicator.
+// Written by David Megginson, started 2002.
+//
+// This file is in the Public Domain and comes with no warranty.
+
+
+#ifndef __INSTRUMENTS_HEADING_INDICATOR_FG_HXX
+#define __INSTRUMENTS_HEADING_INDICATOR_FG_HXX 1
+
+#ifndef __cplusplus
+# error This library requires C++
+#endif
+
+#include <simgear/props/props.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
+
+#include "gyro.hxx"
+
+
+/**
+ * Model an electically-powered fluxgate compass
+ *
+ * Input properties:
+ *
+ * /instrumentation/"name"/serviceable
+ * /instrumentation/"name"/spin
+ * /instrumentation/"name"/offset-deg
+ * /orientation/heading-deg
+ * /systems/electrical/outputs/DG
+ *
+ * Output properties:
+ *
+ * /instrumentation/"name"/indicated-heading-deg
+ */
+class HeadingIndicatorFG : public SGSubsystem
+{
+public:
+    HeadingIndicatorFG ( SGPropertyNode *node );
+    HeadingIndicatorFG ();
+    virtual ~HeadingIndicatorFG ();
+
+    // Subsystem API.
+    void bind() override;
+    void init() override;
+    void reinit() override;
+    void unbind() override;
+    void update(double dt) override;
+
+    // Subsystem identification.
+    static const char* staticSubsystemClassId() { return "heading-indicator-fg"; }
+
+private:
+    Gyro _gyro;
+    double _last_heading_deg;
+
+    std::string name;
+    int num;
+
+    SGPropertyNode_ptr _offset_node;
+    SGPropertyNode_ptr _heading_in_node;
+    SGPropertyNode_ptr _serviceable_node;
+    SGPropertyNode_ptr _heading_out_node;
+    SGPropertyNode_ptr _electrical_node;
+    SGPropertyNode_ptr _error_node;
+    SGPropertyNode_ptr _nav1_error_node;
+    SGPropertyNode_ptr _off_node;
+};
+
+#endif // __INSTRUMENTS_HEADING_INDICATOR_HXX