ossimplugins::PlatformPosition Class Reference

This class handles the platform position. More...

#include <PlatformPosition.h>

Public Member Functions
	PlatformPosition ()
	Constructor. More...
	~PlatformPosition ()
	Destructor. More...
	PlatformPosition (const PlatformPosition &rhs)
	Copy constructor. More...
	PlatformPosition (Ephemeris **data, int nbrData)
	Constructor with initialisation. More...
PlatformPosition &	operator= (const PlatformPosition &rhs)
	Affectation operator. More...
Ephemeris *	Interpolate (JSDDateTime date) const
	This function interpolates its ephemeris to create a new ephemeris at the given date and time. More...
bool	getPlatformPositionAtTime (JSDDateTime time, std::vector< double > &position, std::vector< double > &speed)
	This function interpolates its ephemeris to create and extract platform's position and speed. More...
PlatformPosition *	Clone () const
void	setData (Ephemeris **data, int nbrData)
Ephemeris *	getData (int noData) const
int	getNbrData () const
bool	saveState (ossimKeywordlist &kwl, const char *prefix=0) const
	Method to save object state to a keyword list. More...
bool	loadState (const ossimKeywordlist &kwl, const char *prefix=0)
	Method to the load (recreate) the state of the object from a keyword list. More...

Protected Member Functions
void	InitData (Ephemeris **data, int nbrData)
	Internal method to initialize data structures. More...
void	InitAuxiliaryData ()
void	Clear ()
	This function deletes all the contents of the class. More...

Protected Attributes
int	_nbrData
	Number of platform positions. More...
Ephemeris **	_data
	Platform positions. More...

Private Attributes
double *	_t
double **	_p
double **	_dp
HermiteInterpolator **	_interpolator

Detailed Description

This class handles the platform position.

Definition at line 33 of file PlatformPosition.h.

Constructor & Destructor Documentation

PlatformPosition() [1/3]

ossimplugins::PlatformPosition::PlatformPosition

(

)

Constructor.

Definition at line 28 of file PlatformPosition.cpp.

                                  :
   _nbrData(0),
   _data(NULL),
   _t(NULL),
   _p(NULL),
   _dp(NULL),
   _interpolator(NULL)
{
}

~PlatformPosition()

ossimplugins::PlatformPosition::~PlatformPosition

(

)

Destructor.

Definition at line 38 of file PlatformPosition.cpp.

References Clear().

{
   Clear();
      }

PlatformPosition() [2/3]

ossimplugins::PlatformPosition::PlatformPosition

(

const PlatformPosition &

rhs

)

Copy constructor.

Definition at line 70 of file PlatformPosition.cpp.

References _data, _nbrData, and InitData().

{
   InitData(rhs._data, rhs._nbrData);
}

PlatformPosition() [3/3]

ossimplugins::PlatformPosition::PlatformPosition	(	Ephemeris **	data,
		int	nbrData
	)

Constructor with initialisation.

Parameters

data	Ephemeris
nbrData	Number of Ephemeris in data

Remarks

All the ephemeris have to be in the same coordinates system

This constructor copy the content of data, so it's the calling fonction that have to manage the memory of data.

Definition at line 82 of file PlatformPosition.cpp.

References InitData().

{
   InitData(data, nbrData);
      }

Member Function Documentation

Clear()

void ossimplugins::PlatformPosition::Clear ( )

protected

This function deletes all the contents of the class.

Definition at line 43 of file PlatformPosition.cpp.

References _data, _dp, _interpolator, _nbrData, _p, and _t.

Referenced by loadState(), operator=(), setData(), and ~PlatformPosition().

{
   if(_data != NULL)
   {
      for (int i=0;i<_nbrData;i++)
      {
         delete _data[i];
            }
         delete [] _data;
            }
      _data = NULL;
         _nbrData = 0;
            
            delete[] _t;
               if ((_p != NULL) && (_dp != NULL)) {
                  for (int j=0; j<3; ++j) {
                     delete[] _p[j];
                        delete[] _dp[j];
                           delete _interpolator[j];
                              }
                     }
                  delete[] _p;
                     delete[] _dp;
                        
                        delete[] _interpolator;
                           }

Clone()

PlatformPosition* ossimplugins::PlatformPosition::Clone ( ) const

inline

Definition at line 79 of file PlatformPosition.h.

Referenced by ossimplugins::Sensor::Sensor(), and ossimplugins::ossimGeometricSarSensorModel::set_platformPosition().

      {
         return new PlatformPosition(*this);
      };

getData()

Ephemeris * ossimplugins::PlatformPosition::getData

(

int

noData

)

const

Definition at line 197 of file PlatformPosition.cpp.

References _data, and _nbrData.

{
   if(noData >=0 && noData < _nbrData)
   {
      return _data[noData];
         }
      return NULL;
         }

getNbrData()

int ossimplugins::PlatformPosition::getNbrData

(

)

const

Definition at line 206 of file PlatformPosition.cpp.

References _nbrData.

{
   return _nbrData;
      }

getPlatformPositionAtTime()

bool ossimplugins::PlatformPosition::getPlatformPositionAtTime	(	JSDDateTime	time,
		std::vector< double > &	position,
		std::vector< double > &	speed
	)

This function interpolates its ephemeris to create and extract platform's position and speed.

Parameters

date	Date and time at wich the interpolation have to be done

Returns

true, or false if an error occurs

Definition at line 174 of file PlatformPosition.cpp.

References ossimplugins::Ephemeris::get_position(), ossimplugins::Ephemeris::get_speed(), and Interpolate().

Referenced by ossimplugins::ossimGeometricSarSensorModel::getPlatformPositionAtLine().

{
   Ephemeris* ephemeris = this->Interpolate(time);
   double* position_ptr = ephemeris->get_position();
   double* speed_ptr = ephemeris->get_speed();
   if (position.size() != 3) position.resize(3);
   if (speed.size() != 3) speed.resize(3);
   position[0] = position_ptr[0];
   position[1] = position_ptr[1];
   position[2] = position_ptr[2];
   speed[0] = speed_ptr[0];
   speed[1] = speed_ptr[1];
   speed[2] = speed_ptr[2];
   return true;
}

InitAuxiliaryData()

void ossimplugins::PlatformPosition::InitAuxiliaryData ( )

protected

Definition at line 98 of file PlatformPosition.cpp.

References _data, _dp, _interpolator, _nbrData, _p, _t, ossimplugins::Ephemeris::get_date(), ossimplugins::JSDDateTime::get_day0hTU(), ossimplugins::JSDDateTime::get_decimal(), ossimplugins::JulianDate::get_julianDate(), ossimplugins::Ephemeris::get_position(), ossimplugins::JSDDateTime::get_second(), and ossimplugins::Ephemeris::get_speed().

Referenced by InitData(), and loadState().

{
   const double JOURCIVIL_LENGTH = 86400.0;
      _t = new double[_nbrData];
         _p = new double*[3];
            _dp = new double*[3];
               _interpolator = new HermiteInterpolator*[3];
                  for (int j=0; j<3; ++j) {
                     _p[j] = new double[_nbrData];
                        _dp[j] = new double[_nbrData];
                           }
                     
                     _t[0] = 0.0;
                        for (int i = 1; i < _nbrData; i++)
                        {
                           _t[i] =   (_data[i]->get_date().get_day0hTU().get_julianDate() - _data[0]->get_date().get_day0hTU().get_julianDate())
                              * JOURCIVIL_LENGTH
                              + _data[i]->get_date().get_second() - _data[0]->get_date().get_second()
                              + _data[i]->get_date().get_decimal() - _data[0]->get_date().get_decimal();
                              }
                           
                           for (int j = 0; j < 3; j++)
                           {
                              for (int i = 0; i < _nbrData; i++)
                              {
                                 _p[j][i] = _data[i]->get_position()[j];
                                    _dp[j][i] = _data[i]->get_speed()[j];
                                       }
                                 _interpolator[j] = new HermiteInterpolator(_nbrData, _t, _p[j], _dp[j]);
                                    }
                              
                              }

InitData()

void ossimplugins::PlatformPosition::InitData ( Ephemeris **  data, int  nbrData  )

protected

Internal method to initialize data structures.

Definition at line 87 of file PlatformPosition.cpp.

References _data, _nbrData, ossimplugins::Ephemeris::Clone(), and InitAuxiliaryData().

Referenced by operator=(), PlatformPosition(), and setData().

{
   _nbrData = nbrData;
      _data = new Ephemeris*[_nbrData];
         for (int i=0; i<_nbrData; i++)
         {
            _data[i] = data[i]->Clone();
               }
            InitAuxiliaryData();
               }

Interpolate()

Ephemeris * ossimplugins::PlatformPosition::Interpolate

(

JSDDateTime

date

)

const

This function interpolates its ephemeris to create a new ephemeris at the given date and time.

Parameters

date	Date and time at wich the interpolation have to be done

Returns

The ephemeris at the given date, or NULL if an error occurs

Definition at line 131 of file PlatformPosition.cpp.

References _data, _interpolator, _nbrData, ossimplugins::Ephemeris::Clone(), ossimplugins::Ephemeris::get_date(), ossimplugins::JSDDateTime::get_day0hTU(), ossimplugins::JSDDateTime::get_decimal(), ossimplugins::JulianDate::get_julianDate(), ossimplugins::JSDDateTime::get_second(), ossimplugins::HermiteInterpolator::Interpolate(), ossimplugins::Ephemeris::set_date(), ossimplugins::Ephemeris::set_position(), and ossimplugins::Ephemeris::set_speed().

Referenced by getPlatformPositionAtTime(), ossimplugins::SarSensor::ImageToWorld(), ossimplugins::ossimCosmoSkymedModel::InitRefPoint(), ossimplugins::ossimErsSarModel::InitRefPoint(), ossimplugins::ossimAlosPalsarModel::InitRefPoint(), ossimplugins::ossimRadarSat2Model::InitRefPoint(), ossimplugins::ossimEnvisatAsarModel::InitRefPoint(), ossimplugins::ossimRadarSatModel::InitRefPoint(), and ossimplugins::ossimRadarSat2Model::initRefPoint().

{
   const double JOURCIVIL_LENGTH = 86400.0;
      Ephemeris* ephem = NULL;
         if (_nbrData <= 1)
         {
            return NULL;
               }
            /*
             * The first element of the list is cloned to ensure that the
             * output ephemeris is expressed in the same coordinate system as
             * input ones
             */
            ephem = _data[0]->Clone();
               
               /* NORMAL CASE */
               /*------------*/
               double dt = 0.0;
                  
                  if (ephem != NULL)
                  {
                     ephem->set_date(date);
                        
                        dt =  (date.get_day0hTU().get_julianDate()
                               - _data[0]->get_date().get_day0hTU().get_julianDate())
                           * JOURCIVIL_LENGTH
                           + date.get_second() - _data[0]->get_date().get_second()
                           + date.get_decimal() - _data[0]->get_date().get_decimal();
                           
                           /* Computation by Everett  */
                           /*---------------------*/
                           double pos[3];
                              double speed[3];
                                 for (int j = 0; j < 3; j++)
                                 {
                                    _interpolator[j]->Interpolate(dt, pos[j], speed[j]);
                                       }
                                    ephem->set_position(pos);
                                       ephem->set_speed(speed);
                                          }
                     return ephem;
                        }

loadState()

bool ossimplugins::PlatformPosition::loadState	(	const ossimKeywordlist &	kwl,
		const char *	prefix = 0
	)

Method to the load (recreate) the state of the object from a keyword list.

Return true if ok or false on error.

Returns

true if load OK, false on error

Definition at line 236 of file PlatformPosition.cpp.

References _data, _nbrData, ossimString::chars(), Clear(), ossimKeywordlist::find(), InitAuxiliaryData(), ossimplugins::Ephemeris::loadState(), ossimString::toInt(), and ossimString::toString().

Referenced by ossimplugins::ossimGeometricSarSensorModel::loadState().

{
   bool result = true;
      
      Clear();
         
         const char* lookup = 0;
            lookup = kwl.find(prefix, NUMBER_PLATFORM_POSITIONS_KW);
               if (!lookup)
               {
                  return false;
                     }
                  ossimString s = lookup;
                     _nbrData = s.toInt();
                        
                        if (_nbrData)
                        {
                           std::string s1;
                              if (prefix)
                              {
                                 s1 = prefix;
                                    }
                                 
                                 _data = new  Ephemeris*[_nbrData];
                                    for (int i = 0; i < _nbrData; ++i)
                                    {
                                       std::string s2 = s1;
                                          s2 += "platform_position[";
                                             s2 += ossimString::toString(i).chars();
                                                s2+= "]";
                                                   
                                                   _data[i] = new Ephemeris();
                                                      _data[i]->loadState(kwl, s2.c_str());
                                                         }
                                       }
                           InitAuxiliaryData();
                              return result;
                                 }

operator=()

PlatformPosition & ossimplugins::PlatformPosition::operator=

(

const PlatformPosition &

rhs

)

Affectation operator.

Definition at line 75 of file PlatformPosition.cpp.

References _data, _nbrData, Clear(), and InitData().

{
   Clear();
      InitData(rhs._data, rhs._nbrData);
         return *this;
            }

saveState()

bool ossimplugins::PlatformPosition::saveState	(	ossimKeywordlist &	kwl,
		const char *	prefix = 0
	)		const

Method to save object state to a keyword list.

Parameters

kwl	Keyword list to save to.
prefix	added to keys when saved.

Returns

true on success, false on error.

Definition at line 212 of file PlatformPosition.cpp.

References _data, _nbrData, ossimKeywordlist::add(), ossimString::chars(), ossimplugins::Ephemeris::saveState(), and ossimString::toString().

Referenced by ossimplugins::ossimGeometricSarSensorModel::saveState().

{
   kwl.add(prefix, NUMBER_PLATFORM_POSITIONS_KW, _nbrData);
      
      std::string s1;
         if (prefix)
         {
            s1 = prefix;
               }
            
            for (int i = 0; i < _nbrData; ++i)
            {
               std::string s2 = s1;
                  s2 += "platform_position[";
                     s2 += ossimString::toString(i).chars();
                        s2+= "]";
                           _data[i]->saveState(kwl, s2.c_str());
                              }
               
               return true;
                  }

setData()

void ossimplugins::PlatformPosition::setData	(	Ephemeris **	data,
		int	nbrData
	)

Definition at line 191 of file PlatformPosition.cpp.

References Clear(), and InitData().

Referenced by ossimplugins::ossimTerraSarProductDoc::initPlatformPosition().

{
   Clear();
   InitData(data, nbrData);
}

Member Data Documentation

_data

Ephemeris** ossimplugins::PlatformPosition::_data

protected

Platform positions.

Definition at line 121 of file PlatformPosition.h.

Referenced by Clear(), getData(), InitAuxiliaryData(), InitData(), Interpolate(), loadState(), operator=(), PlatformPosition(), and saveState().

_dp

double** ossimplugins::PlatformPosition::_dp

private

Definition at line 131 of file PlatformPosition.h.

Referenced by Clear(), and InitAuxiliaryData().

_interpolator

HermiteInterpolator** ossimplugins::PlatformPosition::_interpolator

private

Definition at line 132 of file PlatformPosition.h.

Referenced by Clear(), InitAuxiliaryData(), and Interpolate().

_nbrData

int ossimplugins::PlatformPosition::_nbrData

protected

Number of platform positions.

See also

_data

Definition at line 116 of file PlatformPosition.h.

Referenced by Clear(), getData(), getNbrData(), InitAuxiliaryData(), InitData(), Interpolate(), loadState(), operator=(), PlatformPosition(), and saveState().

_p

double** ossimplugins::PlatformPosition::_p

private

Definition at line 130 of file PlatformPosition.h.

Referenced by Clear(), and InitAuxiliaryData().

_t

double* ossimplugins::PlatformPosition::_t

private

Definition at line 129 of file PlatformPosition.h.

Referenced by Clear(), and InitAuxiliaryData().

---

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

• PlatformPosition.h
• PlatformPosition.cpp