GPSPosition Class Reference

#include <gps_position.hh>

Inheritance diagram for GPSPosition:

List of all members.

Public Member Functions

• GPSPosition (MetaObject *super) throw (ServerCommError)

  Constructor: initializes values and oens socket to gpsd.
  
  

• ~GPSPosition ()

  Destructor: closes socket.
  
  

• void setPrecision (int precision) throw (range_error)

  Set precision of values.
  
  

• void setThreshold (double t)

  Set threshold of change before property value is replaced on update() (and therefore update messages sent to listeners).
  
  

• void update () throw (ServerCommError)

  Update value from gpsd after which you can use read() to get the new value.
  
  

• int getStatus () throw (ServerCommError)

  Send status command to gpsd and return response.
  
  

• void setScaling (double latitude, double longitude, double altitude)

  Set scaling multipliers.
  
  

• void setOffsets (double latitude, double longitude, double altitude)

  Set offsets.
  
  

• void fixAltitude (double val)

  Fix altitude (Y position) to some value.
  
  

Static Public Member Functions

• void registerExtenders ()

  Register GPSPosition with MetaFactory by typeid(GPSPosition).name, as a local object extension.
  
  

• MetaObject * new_GPSPosition (MetaObject *super, const string &type)

  This method is used by MetaFactory to create a new instance of this class.
  
  

• void setServer (char *host="127.0.0.1", int port=GPSD_DEFAULT_PORT)

  Set default gpsd server for future GPSPosition objects.
  
  

Protected Attributes

• int socket_fd
• double lat_scale
• double lon_scale
• double alt_scale
• double lat_off
• double lon_off
• double alt_off
• bool fix_alt
• double fixed_alt_val
• double last_lat
• double last_lon
• double last_alt
• double threshold
• char position_format [64]

Static Protected Attributes

• char * gpsd_host = "127.0.0.1"
• int gpsd_port = GPSD_DEFAULT_PORT

---

Constructor & Destructor Documentation

GPSPosition::GPSPosition (  MetaObject *  super  )  throw (ServerCommError)

Constructor: initializes values and oens socket to gpsd. Definition at line 39 of file gps_position.cc. Referenced by new_GPSPosition().

GPSPosition::~GPSPosition (   )

Destructor: closes socket. Definition at line 64 of file gps_position.cc.

---

Member Function Documentation

void GPSPosition::fixAltitude (  double  val  )  [inline]

Fix altitude (Y position) to some value. Definition at line 164 of file gps_position.hh.

int GPSPosition::getStatus (   )  throw (ServerCommError)

Send status command to gpsd and return response. -1 is returned on connection/communicaiton error. Definition at line 128 of file gps_position.cc.

MetaObject* GPSPosition::new_GPSPosition (  MetaObject *  super, const string &  type )  [inline, static]

This method is used by MetaFactory to create a new instance of this class. Definition at line 124 of file gps_position.hh. Referenced by registerExtenders().

void GPSPosition::registerExtenders (   )  [inline, static]

Register GPSPosition with MetaFactory by typeid(GPSPosition).name, as a local object extension. You must also call Property::registerExtenders()! Reimplemented from Property. Definition at line 119 of file gps_position.hh.

void GPSPosition::setOffsets (  double  latitude, double  longitude, double  altitude )

Set offsets. ( (Final value) = (Original value + Offset) * Scaling ). Definition at line 149 of file gps_position.cc.

void GPSPosition::setPrecision (  int  precision  )  throw (range_error)

Set precision of values. The default value is 15 decimal places. Must be an integer value >= 0 and <= 15. new precision value Exceptions: range_error  if requested precision value is > 15 or < 0. Definition at line 121 of file gps_position.cc.

void GPSPosition::setScaling (  double  latitude, double  longitude, double  altitude )

Set scaling multipliers. ( (Final value) = (Original value + Offset) * Scaling ). Definition at line 142 of file gps_position.cc.

void GPSPosition::setServer (  char *  host = "127.0.0.1", int  port = GPSD_DEFAULT_PORT )  [inline, static]

Set default gpsd server for future GPSPosition objects. Parameters: host  Numerical host address. Default is "127.0.0.1" port  Port number. Default is GPSD_DEFAULT_PORT (2947). Definition at line 152 of file gps_position.hh.

void GPSPosition::setThreshold (  double  t  )  [inline]

Set threshold of change before property value is replaced on update() (and therefore update messages sent to listeners). Definition at line 136 of file gps_position.hh.

void GPSPosition::update (   )  throw (ServerCommError)

Update value from gpsd after which you can use read() to get the new value. Call at intervals, or right before a read. Only changes the property value (with a call to replace()) if the difference from the last update is greater than the threshold. See also: setThreshold() setPrecision() Definition at line 88 of file gps_position.cc.

---

Member Data Documentation

double GPSPosition::alt_off [protected]

Definition at line 91 of file gps_position.hh. Referenced by setOffsets().

double GPSPosition::alt_scale [protected]

Definition at line 86 of file gps_position.hh. Referenced by setScaling().

bool GPSPosition::fix_alt [protected]

Definition at line 94 of file gps_position.hh. Referenced by fixAltitude().

double GPSPosition::fixed_alt_val [protected]

Definition at line 95 of file gps_position.hh. Referenced by fixAltitude().

char * GPSPosition::gpsd_host = "127.0.0.1" [static, protected]

Definition at line 34 of file gps_position.cc. Referenced by setServer().

int GPSPosition::gpsd_port = GPSD_DEFAULT_PORT [static, protected]

Definition at line 35 of file gps_position.cc. Referenced by setServer().

double GPSPosition::last_alt [protected]

Definition at line 100 of file gps_position.hh.

double GPSPosition::last_lat [protected]

Definition at line 98 of file gps_position.hh.

double GPSPosition::last_lon [protected]

Definition at line 99 of file gps_position.hh.

double GPSPosition::lat_off [protected]

Definition at line 89 of file gps_position.hh. Referenced by setOffsets().

double GPSPosition::lat_scale [protected]

Definition at line 84 of file gps_position.hh. Referenced by setScaling().

double GPSPosition::lon_off [protected]

Definition at line 90 of file gps_position.hh. Referenced by setOffsets().

double GPSPosition::lon_scale [protected]

Definition at line 85 of file gps_position.hh. Referenced by setScaling().

char GPSPosition::position_format[64] [protected]

Definition at line 107 of file gps_position.hh.

int GPSPosition::socket_fd [protected]

Definition at line 79 of file gps_position.hh. Referenced by ~GPSPosition().

double GPSPosition::threshold [protected]

Definition at line 104 of file gps_position.hh. Referenced by setThreshold().

---

The documentation for this class was generated from the following files:

• vos/metaobjects/property/gps_position.hh
• vos/metaobjects/property/gps_position.cc

---