157 lines
3.6 KiB
C++
157 lines
3.6 KiB
C++
#pragma once
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#include <simgear/compiler.h>
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#include <iostream>
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#include <string>
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#include <vector>
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#include <simgear/misc/stdint.hxx>
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#include <simgear/io/iochannel.hxx>
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#include <simgear/serial/serial.hxx>
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// encapsulate a midg integer time (fixme, assumes all times in a track
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// are from the same day, so we don't handle midnight roll over)
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class MIDGTime {
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public:
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uint32_t msec;
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double seconds;
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inline MIDGTime( const int dd, const int hh, const int mm,
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const double ss )
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{
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seconds = dd*86400.0 + hh*3600.0 + mm*60.0 + ss;
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msec = (uint32_t)(seconds * 1000);
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}
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inline MIDGTime( const uint32_t midgtime_msec ) {
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msec = midgtime_msec;
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seconds = (double)midgtime_msec / 1000.0;
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// std::cout << midgtime << " = " << seconds << std::endl;
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}
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inline ~MIDGTime() {}
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inline double get_seconds() const { return seconds; }
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inline uint32_t get_msec() const { return msec; }
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inline double diff_seconds( const MIDGTime t ) const {
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return seconds - t.seconds;
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}
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};
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// base class for MIDG data types
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class MIDGpoint {
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public:
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MIDGTime midg_time;
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MIDGpoint() :
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midg_time(MIDGTime(0))
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{ }
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inline double get_seconds() const { return midg_time.get_seconds(); }
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inline uint32_t get_msec() const { return midg_time.get_msec(); }
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};
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// encapsulate the interesting midg data for a moment in time
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class MIDGpos : public MIDGpoint {
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public:
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double lat_deg;
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double lon_deg;
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double altitude_msl;
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int fix_quality;
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int num_satellites;
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double hdop;
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double speed_kts;
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double course_true;
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MIDGpos() :
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lat_deg(0.0),
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lon_deg(0.0),
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altitude_msl(0.0),
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fix_quality(0),
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num_satellites(0),
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hdop(0.0),
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speed_kts(0.0),
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course_true(0.0)
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{ }
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};
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// encapsulate the interesting midg data for a moment in time
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class MIDGatt : public MIDGpoint {
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public:
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double yaw_rad;
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double pitch_rad;
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double roll_rad;
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MIDGatt() :
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yaw_rad(0.0),
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pitch_rad(0.0),
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roll_rad(0.0)
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{ }
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};
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// Manage a saved midg log (track file)
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class MIDGTrack {
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private:
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std::vector <MIDGpos> pos_data;
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std::vector <MIDGatt> att_data;
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// parse message and put current data into vector if message has a
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// newer time stamp than existing data.
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void parse_msg( const int id, char *buf, MIDGpos *pos, MIDGatt *att );
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public:
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MIDGTrack();
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~MIDGTrack();
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// read/parse the next message from the specified data stream,
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// returns id # if a valid message found.
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int next_message( SGIOChannel *ch, SGIOChannel *log,
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MIDGpos *pos, MIDGatt *att );
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int next_message( SGSerialPort *serial, SGIOChannel *log,
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MIDGpos *pos, MIDGatt *att );
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// load the named file into internal buffers
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bool load( const std::string &file );
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inline int pos_size() const { return pos_data.size(); }
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inline int att_size() const { return att_data.size(); }
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inline MIDGpos get_pospt( const unsigned int i )
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{
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if ( i < pos_data.size() ) {
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return pos_data[i];
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} else {
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return MIDGpos();
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}
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}
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inline MIDGatt get_attpt( const unsigned int i )
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{
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if ( i < att_data.size() ) {
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return att_data[i];
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} else {
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return MIDGatt();
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}
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}
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};
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MIDGpos MIDGInterpPos( const MIDGpos A, const MIDGpos B, const double percent );
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MIDGatt MIDGInterpAtt( const MIDGatt A, const MIDGatt B, const double percent );
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