//# SDPosInterpolator.h: Definition for SDPosInterpolator
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//# $Id$

#ifndef SYNTHESIS_SDPOSINTERPOLATOR_H
#define SYNTHESIS_SDPOSINTERPOLATOR_H

#include <casacore/casa/Arrays/Vector.h>
#include <casacore/casa/BasicSL/Constants.h>
#include <casacore/casa/Quanta/MVAngle.h>
#include <casacore/casa/Quanta/MVTime.h>
#include <casacore/casa/Quanta/UnitMap.h>
#include <casacore/casa/Quanta/UnitVal.h>
#include <casacore/measures/Measures/MDirection.h>
#include <casacore/measures/Measures/Measure.h>
#include <casacore/ms/MeasurementSets/MSColumns.h>
#include <msvis/MSVis/VisBuffer.h>
#include <msvis/MSVis/VisBuffer2.h>
#include <casacore/coordinates/Coordinates/DirectionCoordinate.h>

namespace casa { //# NAMESPACE CASA - BEGIN

class SDPosInterpolator {
public:
    SDPosInterpolator(
        const VisBuffer& vb,
        const casacore::String& pointingDirCol_p
    );
    SDPosInterpolator(
        const vi::VisBuffer2& vb,
        const casacore::String& pointingDirCol_p
    );
    SDPosInterpolator(
        const casacore::MSPointing& pointingTable,
        const casacore::String& columnName,
        const size_t nant
    );
    SDPosInterpolator(
        const casacore::MSPointingColumns& pointingColumns,
        const casacore::String& columnName,
        const size_t nant
    );
    SDPosInterpolator(
        const casacore::Vector<casacore::Vector<casacore::Double> >& time,
        const casacore::Vector<casacore::Vector<casacore::Vector<casacore::Double> > >& dir
    );
    ~SDPosInterpolator();
    casacore::Vector<casacore::Bool> doSplineInterpolation;   //(antid)
    casacore::MDirection interpolateDirectionMeasSpline(
        const casacore::MSPointingColumns& mspc,
        const casacore::Double& time,
        const casacore::Int& index,
        const casacore::Int& antid
    );
    casacore::Vector<casacore::Vector<casacore::Vector<casacore::Vector<casacore::Double> > > > 
    getSplineCoeff();
    casacore::Bool inTimeRange(
      const casacore::Double& time,
      const casacore::Int& antid
    );
private:
    casacore::Vector<casacore::Vector<casacore::Double> > timePointing; //(antid)(index)
    casacore::Vector<casacore::Vector<casacore::Vector<casacore::Double> > > dirPointing; //(antid)(index)(xy)
    casacore::Vector<casacore::Vector<casacore::Vector<casacore::Vector<casacore::Double> > > > splineCoeff; //(antid)(index)(xy)(order)
    casacore::Vector<casacore::Double> timeRangeStart; //(antid)
    casacore::Vector<casacore::Double> timeRangeEnd; //(antid)

    void setup(
        const casacore::MSPointingColumns& act_mspc,
        const casacore::String& pointingDirCol_p,
        const size_t nant
    );
    void setup(
        const casacore::Vector<casacore::Vector<casacore::Double> >& time,
        const casacore::Vector<casacore::Vector<casacore::Vector<casacore::Double> > >& dir
    );
    void calcSplineCoeff(
        const casacore::Vector<casacore::Double>& time,
        const casacore::Vector<casacore::Vector<casacore::Double> >& dir,
        casacore::Vector<casacore::Vector<casacore::Vector<casacore::Double> > >& coeff
    );
};

} //# NAMESPACE CASA - END

#endif