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/***********************************************/
/**
* @file fileMeanPolarMotion.cpp
*
* @brief Read/write MeanPolarMotion.
*
* @author Torsten Mayer-Guerr
* @date 2017-12-09
*
*/
/***********************************************/
#define DOCSTRING_FILEFORMAT_MeanPolarMotion
#include "base/import.h"
#include "inputOutput/fileArchive.h"
#include "files/fileFormatRegister.h"
#include "files/fileMeanPolarMotion.h"
GROOPS_REGISTER_FILEFORMAT(MeanPolarMotion, FILE_MEANPOLARMOTION_TYPE)
/***********************************************/
void MeanPolarMotion::compute(const Time &time, Double &xBar, Double &yBar) const
{
try
{
xBar = 0;
yBar = 0;
if(timeStart.size() == 0)
return;
// find correct interval
if(time<timeStart.at(0))
throw(Exception("mean pole model is not valid before "+timeStart.at(0).dateTimeStr()));
UInt idxInterval = 0;
while((idxInterval+1 < timeStart.size()) && (time >= timeStart.at(idxInterval+1)))
idxInterval++;
// mean pole (IERS2010, eq. (7.25))
Double tn = 1;
const Double t = (time.mjd()-J2000)/365.25; // years after J2000
for(UInt n=0; n<=degree.at(idxInterval); n++)
{
xBar += tn * xp.at(idxInterval)(n);
yBar += tn * yp.at(idxInterval)(n);
tn *= t;
}
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
template<> void save(OutArchive &ar, const MeanPolarMotion &x)
{
const UInt intervalCount = x.timeStart.size();
ar<<nameValue("intervalCount", intervalCount);
if(!intervalCount)
return;
//comment
const UInt maxDegree = *std::max_element(x.degree.begin(), x.degree.end());
std::string str = "start time [MJD] degree";
for(UInt n=0; n<=maxDegree; n++)
str += " xp [arcsec/year^"+n%"%i"s+"] ";
for(UInt n=0; n<=maxDegree; n++)
str += " yp [arcsec/year^"+n%"%i"s+"] ";
ar.comment(str);
ar.comment(std::string(str.size(), '='));
for(UInt idxInterval=0; idxInterval<intervalCount; idxInterval++)
{
ar<<beginGroup("interval");
ar<<nameValue("timeStart", x.timeStart.at(idxInterval));
ar<<nameValue("degree", x.degree.at(idxInterval));
for(UInt n=0; n<=x.degree.at(idxInterval); n++)
ar<<nameValue("xp", x.xp.at(idxInterval)(n));
for(UInt n=0; n<=x.degree.at(idxInterval); n++)
ar<<nameValue("yp", x.yp.at(idxInterval)(n));
ar<<endGroup("interval");
}
}
/***********************************************/
template<> void load(InArchive &ar, MeanPolarMotion &x)
{
UInt intervalCount;
ar>>nameValue("intervalCount", intervalCount);
x.timeStart.resize(intervalCount);
x.degree.resize(intervalCount);
x.xp.resize(intervalCount);
x.yp.resize(intervalCount);
for(UInt idxInterval=0; idxInterval<intervalCount; idxInterval++)
{
ar>>beginGroup("interval");
ar>>nameValue("timeStart", x.timeStart.at(idxInterval));
ar>>nameValue("degree", x.degree.at(idxInterval));
x.xp.at(idxInterval) = Vector(x.degree.at(idxInterval)+1);
x.yp.at(idxInterval) = Vector(x.degree.at(idxInterval)+1);
for(UInt n=0; n<=x.degree.at(idxInterval); n++)
ar>>nameValue("xp", x.xp.at(idxInterval)(n));
for(UInt n=0; n<=x.degree.at(idxInterval); n++)
ar>>nameValue("yp", x.yp.at(idxInterval)(n));
ar>>endGroup("interval");
}
}
/***********************************************/
void writeFileMeanPolarMotion(const FileName &fileName, const MeanPolarMotion &x)
{
try
{
OutFileArchive file(fileName, FILE_MEANPOLARMOTION_TYPE, FILE_MEANPOLARMOTION_VERSION);
file<<nameValue("meanPolarMotion", x);
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
void readFileMeanPolarMotion(const FileName &fileName, MeanPolarMotion &x)
{
try
{
InFileArchive file(fileName, FILE_MEANPOLARMOTION_TYPE, FILE_MEANPOLARMOTION_VERSION);
file>>nameValue("meanPolarMotion", x);
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
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