array2dresample.h

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#ifndef array2dresample_h
#define array2dresample_h

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        A.H. Bril
 Date:          26/07/2000
 RCS:           $Id$
________________________________________________________________________

-*/

#include "arraynd.h"
#include "array2dfunc.h"
#include "task.h"
#include "geometry.h"
#include "interpol2d.h"

template <class T, class TT>
mClass(General) Array2DReSampler : public ParallelTask
{ mODTextTranslationClass(Array2DReSampler)
public:

    inline              Array2DReSampler(const Array2D<T>& from,
                            Array2D<TT>& to, bool fromhasudfs,
                            const Geom::PosRectangle<float>* rectinfrom=0 );
    inline              Array2DReSampler(const Array2D<T>& from,
                            TT* to, int sz0, int sz1, bool fromhasudfs,
                            const Geom::PosRectangle<float>* rectinfrom=0 );
    inline              Array2DReSampler(const Array2D<T>& from,
                            ValueSeries<TT>& to,int sz0,int sz1,
                            bool fromhasudfs,
                            const Geom::PosRectangle<float>* rectinfrom=0 );
    inline void         set(const Array2D<T>& from, Array2D<TT>& to,
                            bool fromhasudfs,
                            const Geom::PosRectangle<float>* rectinfrom=0 );
    inline void         set(const Array2D<T>& from, TT* to, int sz0, int sz1,
                            bool fromhasudfs,
                            const Geom::PosRectangle<float>* rectinfrom=0 );
    inline void         set(const Array2D<T>& from,ValueSeries<TT>& to,
                            int sz0, int sz1,bool fromhasudfs,
                            const Geom::PosRectangle<float>* rectinfrom=0 );
    inline od_int64     nrIterations() const;
    void                setInterpolate(bool yn) { interpolate_ = yn; }

private:
    inline void         updateScale(const Geom::PosRectangle<float>*);
    inline bool         doWork(od_int64,od_int64, int );
    uiString            uiNrDoneText() const
                        { return tr("Data columns resampled"); }

    const Array2D<T>*           from_;
    Array2D<TT>*                to_;
    Array2DInfoImpl             toinfo_;
    TT*                         toptr_;
    ValueSeries<TT>*            tovs_;
    Array2DFunc<TT,float,T>     func_;
    SamplingData<float>         xsampling_;
    SamplingData<float>         ysampling_;
    bool                        interpolate_;
};

#define mXDim   0
#define mYDim   1


template <class T, class TT> inline
Array2DReSampler<T,TT>::Array2DReSampler( const Array2D<T>& from,
                        Array2D<TT>& to, bool fromhasudfs,
                        const Geom::PosRectangle<float>* rectinfrom )
    : ParallelTask("Re-sampling data")
{ set( from, to, fromhasudfs, rectinfrom ); }


template <class T, class TT> inline
Array2DReSampler<T,TT>::Array2DReSampler( const Array2D<T>& from,
                        TT* to, int sz0, int sz1, bool fromhasudfs,
                        const Geom::PosRectangle<float>* rectinfrom )
    : ParallelTask("Re-sampling data")
{ set( from, to, sz0, sz1, fromhasudfs, rectinfrom ); }


template <class T, class TT> inline
Array2DReSampler<T,TT>::Array2DReSampler( const Array2D<T>& from,
                        ValueSeries<TT>& to, int sz0, int sz1, bool fromhasudfs,
                        const Geom::PosRectangle<float>* rectinfrom )
    : ParallelTask("Re-sampling data")
{ set( from, to, sz0, sz1, fromhasudfs, rectinfrom ); }


#define mUpdateResampler \
    from_ = &from;  \
    func_.set( from, fromhasudfs ); \
    updateScale( rectinfromptr )

template <class T, class TT> inline
void Array2DReSampler<T,TT>::set( const Array2D<T>& from, Array2D<TT>& to,
                                 bool fromhasudfs,
                                 const Geom::PosRectangle<float>* rectinfromptr)
{
    if ( to.getData() )
    {
        toptr_ = to.getData();
        to_ = 0;
        tovs_ = 0;
    }
    else if ( to.getStorage() )
    {
        to_ = 0;
        toptr_ = 0;
        tovs_ = to.getStorage();
    }
    else
    {
        to_ = &to;
        toptr_ = 0;
        tovs_ = 0;
    }

    toinfo_ = to.info();

    mUpdateResampler;
}


template <class T, class TT> inline
void Array2DReSampler<T,TT>::set( const Array2D<T>& from, TT* to,
        int sz0, int sz1, bool fromhasudfs,
        const Geom::PosRectangle<float>* rectinfromptr)
{
    toptr_ = to; 
    to_ = 0;
    tovs_ = 0;

    toinfo_.setSize( mXDim, sz0 );
    toinfo_.setSize( mYDim, sz1 );

    mUpdateResampler;
}


template <class T, class TT> inline
void Array2DReSampler<T,TT>::set( const Array2D<T>& from, ValueSeries<TT>& to,
        int sz0, int sz1, bool fromhasudfs,
        const Geom::PosRectangle<float>* rectinfromptr)
{
    if ( to.arr() )
    {
        toptr_ = to.arr();
        tovs_ = 0;
        to_ = 0;
    }
    else
    {
        toptr_ = 0; 
        tovs_ = &to;
        to_ = 0;
    }

    toinfo_.setSize( mXDim, sz0 );
    toinfo_.setSize( mYDim, sz1 );
    mUpdateResampler;
}


template <class T, class TT> inline
void Array2DReSampler<T,TT>::updateScale(
        const Geom::PosRectangle<float>* rectinfromptr )
{
    const int xsize = toinfo_.getSize( mXDim );
    const int ysize = toinfo_.getSize( mYDim );

    Geom::PosRectangle<float> rectinfrom( 0, 0, 
                                mCast(float,from_->info().getSize(mXDim)-1),
                                mCast(float,from_->info().getSize(mYDim)-1) );

    if ( rectinfromptr )
    {
        Geom::PosRectangle<float> nrect( *rectinfromptr );
        nrect.sortCorners( true, true );
        if ( rectinfrom.contains( nrect, 1e-3 ) )
            rectinfrom = nrect;
    }

    xsampling_.start = rectinfrom.left();
    xsampling_.step = rectinfrom.width()/(xsize-1);

    ysampling_.start = rectinfrom.left();
    ysampling_.step = rectinfrom.height()/(ysize-1);
}


template <class T, class TT> inline
od_int64 Array2DReSampler<T,TT>::nrIterations() const
{
    return toinfo_.getSize( mXDim );
}



template <class T, class TT> inline
bool Array2DReSampler<T,TT>::doWork( od_int64 start, od_int64 stop, int )
{
    const int ysize = toinfo_.getSize( mYDim );
    int localnrdone = 0;
    od_int64 offset = start*ysize;
    TT* toptr = toptr_ ? toptr_+offset : 0;
    for ( int idx=mCast(int,start); idx<=stop; idx++ )
    {
        const float sourcex = xsampling_.atIndex( idx );
        for ( int idy=0; idy<ysize; idy++ )
        {
            const float sourcey = ysampling_.atIndex( idy );

            const TT val = interpolate_ 
                ? func_.getValue( sourcex, sourcey )
                : from_->get( mNINT32(sourcex), mNINT32( sourcey ) );
            if ( toptr )
            {
                *toptr = val;
                toptr++;
            }
            else if ( tovs_ )
                tovs_->setValue( offset++, val );
            else
                to_->set( idx, idy , val );
        }

        localnrdone++;

        if ( localnrdone>100 )
        {
            addToNrDone( localnrdone );
            localnrdone = 0;
        }
    }

    addToNrDone( localnrdone );

    return true;
}

#undef mXDim
#undef mYDim
#undef mUpdateResampler


#endif