FGUDPInputSocket Class Reference

Detailed Description

Implements a UDP input socket.

Definition at line 60 of file FGUDPInputSocket.h.

#include <FGUDPInputSocket.h>

Inheritance diagram for FGUDPInputSocket:

Collaboration diagram for FGUDPInputSocket:

Public Member Functions
	FGUDPInputSocket (FGFDMExec *fdmex)
	Constructor.
bool	Load (Element *el) override
	Reads the property names from an XML file.
void	Read (bool Holding) override
	Reads the socket and updates properties accordingly.
Public Member Functions inherited from FGInputSocket
	FGInputSocket (FGFDMExec *fdmex)
	Constructor.
	~FGInputSocket () override
	Destructor.
bool	InitModel (void) override
	Initializes the instance.
Public Member Functions inherited from FGInputType
	FGInputType (FGFDMExec *fdmex)
	Constructor (implement the FGModel interface).
	~FGInputType () override
	Destructor.
void	Disable (void)
	Disables the input generation.
void	Enable (void)
	Enables the input generation.
virtual const std::string &	GetInputName (void) const
	Get the name identifier to which the input will be directed.
bool	InitModel (void) override
	Init the input model according to its configitation.
bool	Run (bool Holding) override
	Executes the input directives (implement the FGModel interface).
void	SetIdx (unsigned int idx)
	Set the idx for this input instance.
virtual void	SetInputName (const std::string &name)
	Overwrites the name identifier under which the input will be read.
bool	Toggle (void)
	Toggles the input generation.
Public Member Functions inherited from FGModel
	FGModel (FGFDMExec *)
	Constructor.
	~FGModel () override
	Destructor.
virtual SGPath	FindFullPathName (const SGPath &path) const
FGFDMExec *	GetExec (void)
const std::string &	GetName (void)
unsigned int	GetRate (void)
	Get the output rate for the model in frames.
bool	InitModel (void) override
void	SetPropertyManager (std::shared_ptr< FGPropertyManager > fgpm)
void	SetRate (unsigned int tt)
	Set the ouput rate for the model in frames.
Public Member Functions inherited from FGModelFunctions
std::string	GetFunctionStrings (const std::string &delimeter) const
	Gets the strings for the current set of functions.
std::string	GetFunctionValues (const std::string &delimeter) const
	Gets the function values.
std::shared_ptr< FGFunction >	GetPreFunction (const std::string &name)
	Get one of the "pre" function.
bool	Load (Element *el, FGFDMExec *fdmex, std::string prefix="")
void	PostLoad (Element *el, FGFDMExec *fdmex, std::string prefix="")
void	PreLoad (Element *el, FGFDMExec *fdmex, std::string prefix="")
void	RunPostFunctions (void)
void	RunPreFunctions (void)
Public Member Functions inherited from FGJSBBase
	FGJSBBase ()
	Constructor for FGJSBBase.
virtual	~FGJSBBase ()
	Destructor for FGJSBBase.
void	disableHighLighting (void)
	Disables highlighting in the console output.

Protected Attributes
std::vector< FGPropertyNode_ptr >	InputProperties
double	oldTimeStamp
int	rate
Protected Attributes inherited from FGInputSocket
bool	BlockingInput
std::string	data
FGfdmSocket *	socket
unsigned int	SockPort
FGfdmSocket::ProtocolType	SockProtocol
Protected Attributes inherited from FGInputType
bool	enabled
unsigned int	InputIdx
Protected Attributes inherited from FGModel
unsigned int	exe_ctr
FGFDMExec *	FDMExec
std::string	Name
std::shared_ptr< FGPropertyManager >	PropertyManager
unsigned int	rate
Protected Attributes inherited from FGModelFunctions
FGPropertyReader	LocalProperties
std::vector< std::shared_ptr< FGFunction > >	PostFunctions
std::vector< std::shared_ptr< FGFunction > >	PreFunctions

Additional Inherited Members
Public Types inherited from FGJSBBase
enum	{ eL = 1 , eM , eN }
	Moments L, M, N. More...
enum	{ eP = 1 , eQ , eR }
	Rates P, Q, R. More...
enum	{ eU = 1 , eV , eW }
	Velocities U, V, W. More...
enum	{ eX = 1 , eY , eZ }
	Positions X, Y, Z. More...
enum	{ ePhi = 1 , eTht , ePsi }
	Euler angles Phi, Theta, Psi. More...
enum	{ eDrag = 1 , eSide , eLift }
	Stability axis forces, Drag, Side force, Lift. More...
enum	{ eRoll = 1 , ePitch , eYaw }
	Local frame orientation Roll, Pitch, Yaw. More...
enum	{ eNorth = 1 , eEast , eDown }
	Local frame position North, East, Down. More...
enum	{ eLat = 1 , eLong , eRad }
	Locations Radius, Latitude, Longitude. More...
enum	{   inNone = 0 , inDegrees , inRadians , inMeters ,   inFeet }
	Conversion specifiers. More...
Static Public Member Functions inherited from FGJSBBase
static const std::string &	GetVersion (void)
	Returns the version number of JSBSim.
static constexpr double	KelvinToFahrenheit (double kelvin)
	Converts from degrees Kelvin to degrees Fahrenheit.
static constexpr double	CelsiusToRankine (double celsius)
	Converts from degrees Celsius to degrees Rankine.
static constexpr double	RankineToCelsius (double rankine)
	Converts from degrees Rankine to degrees Celsius.
static constexpr double	KelvinToRankine (double kelvin)
	Converts from degrees Kelvin to degrees Rankine.
static constexpr double	RankineToKelvin (double rankine)
	Converts from degrees Rankine to degrees Kelvin.
static constexpr double	FahrenheitToCelsius (double fahrenheit)
	Converts from degrees Fahrenheit to degrees Celsius.
static constexpr double	CelsiusToFahrenheit (double celsius)
	Converts from degrees Celsius to degrees Fahrenheit.
static constexpr double	CelsiusToKelvin (double celsius)
	Converts from degrees Celsius to degrees Kelvin.
static constexpr double	KelvinToCelsius (double kelvin)
	Converts from degrees Kelvin to degrees Celsius.
static constexpr double	FeetToMeters (double measure)
	Converts from feet to meters.
static bool	EqualToRoundoff (double a, double b)
	Finite precision comparison.
static bool	EqualToRoundoff (float a, float b)
	Finite precision comparison.
static bool	EqualToRoundoff (float a, double b)
	Finite precision comparison.
static bool	EqualToRoundoff (double a, float b)
	Finite precision comparison.
static constexpr double	Constrain (double min, double value, double max)
	Constrain a value between a minimum and a maximum value.
static constexpr double	sign (double num)
Static Public Attributes inherited from FGJSBBase
static char	highint [5] = {27, '[', '1', 'm', '\0' }
	highlights text
static char	halfint [5] = {27, '[', '2', 'm', '\0' }
	low intensity text
static char	normint [6] = {27, '[', '2', '2', 'm', '\0' }
	normal intensity text
static char	reset [5] = {27, '[', '0', 'm', '\0' }
	resets text properties
static char	underon [5] = {27, '[', '4', 'm', '\0' }
	underlines text
static char	underoff [6] = {27, '[', '2', '4', 'm', '\0' }
	underline off
static char	fgblue [6] = {27, '[', '3', '4', 'm', '\0' }
	blue text
static char	fgcyan [6] = {27, '[', '3', '6', 'm', '\0' }
	cyan text
static char	fgred [6] = {27, '[', '3', '1', 'm', '\0' }
	red text
static char	fggreen [6] = {27, '[', '3', '2', 'm', '\0' }
	green text
static char	fgdef [6] = {27, '[', '3', '9', 'm', '\0' }
	default text
static short	debug_lvl = 1
Protected Member Functions inherited from FGInputType
void	Debug (int from) override
Protected Member Functions inherited from FGModel
bool	Upload (Element *el, bool preLoad)
	Uploads this model in memory.
Static Protected Member Functions inherited from FGJSBBase
static std::string	CreateIndexedPropertyName (const std::string &Property, int index)
Static Protected Attributes inherited from FGJSBBase
static constexpr double	radtodeg = 180. / M_PI
static constexpr double	degtorad = M_PI / 180.
static constexpr double	hptoftlbssec = 550.0
static constexpr double	psftoinhg = 0.014138
static constexpr double	psftopa = 47.88
static constexpr double	fttom = 0.3048
static constexpr double	ktstofps = 1852./(3600*fttom)
static constexpr double	fpstokts = 1.0 / ktstofps
static constexpr double	inchtoft = 1.0/12.0
static constexpr double	m3toft3 = 1.0/(fttom*fttom*fttom)
static constexpr double	in3tom3 = inchtoft*inchtoft*inchtoft/m3toft3
static constexpr double	inhgtopa = 3386.38
static constexpr double	slugtolb = 32.174049
	Note that definition of lbtoslug by the inverse of slugtolb and not to a different constant you can also get from some tables will make lbtoslug*slugtolb == 1 up to the magnitude of roundoff.
static constexpr double	lbtoslug = 1.0/slugtolb
static constexpr double	kgtolb = 2.20462
static constexpr double	kgtoslug = 0.06852168
static const std::string	needed_cfg_version = "2.0"
static const std::string	JSBSim_version = JSBSIM_VERSION " " __DATE__ " " __TIME__

Constructor & Destructor Documentation

FGUDPInputSocket()

FGUDPInputSocket

(

FGFDMExec *

fdmex

)

Constructor.

Definition at line 57 of file FGUDPInputSocket.cpp.

                                                   :
  FGInputSocket(fdmex), rate(20), oldTimeStamp(0.0)
{
  SockPort = 5139;
  SockProtocol = FGfdmSocket::ptUDP;
}

Member Function Documentation

Load()

bool Load ( Element *  el )

overridevirtual

Reads the property names from an XML file.

Parameters

element

The root XML Element of the input file.

Reimplemented from FGInputSocket.

Definition at line 66 of file FGUDPInputSocket.cpp.

{
  if (!FGInputSocket::Load(el))
    return false;
 
  rate = atoi(el->GetAttributeValue("rate").c_str());
  SetRate(0.5 + 1.0/(FDMExec->GetDeltaT()*rate));
 
  Element *property_element = el->FindElement("property");
 
  while (property_element) {
    string property_str = property_element->GetDataLine();
    FGPropertyNode* node = PropertyManager->GetNode(property_str);
    if (!node) {
      cerr << fgred << highint << endl << "  No property by the name "
           << property_str << " can be found." << reset << endl;
    } else {
      InputProperties.push_back(node);
    }
    property_element = el->FindNextElement("property");
  }
 
  return true;
}

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Read()

void Read ( bool  Holding )

overridevirtual

Reads the socket and updates properties accordingly.

Reimplemented from FGInputSocket.

Definition at line 93 of file FGUDPInputSocket.cpp.

{
  if (socket == 0) return;
 
  data = socket->Receive();
 
  if (!data.empty()) {
 
    vector<string> tokens;
    stringstream ss(data);
    string temp;
    while (getline(ss, temp, ',')) {
       tokens.push_back(temp);
    }
 
    vector<double> values;
 
    try {
      for (string& token : tokens)
        values.push_back(atof_locale_c(token));
    } catch(InvalidNumber& e) {
      cerr << e.what() << endl;
      return;
    }
 
    if (values[0] < oldTimeStamp) {
      return;
    } else {
      oldTimeStamp = values[0];
    }
 
    // the zeroeth value is the time stamp
    if ((values.size() - 1) != InputProperties.size()) {
      cerr << endl << "Mismatch between UDP input property and value counts." << endl;
      return;
    }
 
    for (unsigned int i=1; i<values.size(); i++) {
      InputProperties[i-1]->setDoubleValue(values[i]);
    }
  }
}

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Member Data Documentation

InputProperties

std::vector<FGPropertyNode_ptr> InputProperties

protected

Definition at line 78 of file FGUDPInputSocket.h.

oldTimeStamp

double oldTimeStamp

protected

Definition at line 77 of file FGUDPInputSocket.h.

rate

int rate

protected

Definition at line 76 of file FGUDPInputSocket.h.

---

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

• FGUDPInputSocket.h
• FGUDPInputSocket.cpp