arrayndinfo.h

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#ifndef arrayndinfo_h
#define arrayndinfo_h
/*
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        K. Tingdahl
 Date:          9-3-1999
 RCS:           $Id$
________________________________________________________________________


*/

#include "basicmod.h"
#include "gendefs.h"

mExpClass(Basic) ArrayNDInfo
{
public:

    virtual ArrayNDInfo* clone() const                                  = 0;
    virtual             ~ArrayNDInfo()                                  {}

    virtual int         getNDim() const                                 = 0;
    virtual int         getSize(int dim) const                          = 0;
    virtual bool        setSize(int dim,int sz);

    virtual bool        isOK() const;

    virtual od_uint64   getTotalSz() const;
    virtual od_uint64   getOffset(const int*) const;
    virtual bool        validPos(const int*) const;
    bool                validDimPos(int dim,int pos) const;
    virtual bool        getArrayPos(od_uint64, int*) const;
protected:

    od_uint64           calcTotalSz() const;

};


inline bool operator ==( const ArrayNDInfo& a1, const ArrayNDInfo& a2 )
{
    int nd = a1.getNDim();
    if ( nd != a2.getNDim() ) return false;
    for ( int idx=0; idx<nd; idx++ )
        if ( a1.getSize(idx) != a2.getSize(idx) ) return false;
    return true;
}

inline bool operator !=( const ArrayNDInfo& a1, const ArrayNDInfo& a2 )
{ return !(a1 == a2); }


mExpClass(Basic) Array1DInfo : public ArrayNDInfo
{
public:

    virtual int         getNDim() const                 { return 1; }

    virtual od_uint64   getOffset( int pos ) const
                        { return pos; }
    virtual bool        validPos( int pos ) const
                        { return ArrayNDInfo::validPos( &pos ); }

    virtual od_uint64   getOffset( const int* iarr ) const
                        { return getOffset( *iarr ); }
    virtual bool        validPos( const int* iarr ) const
                        { return ArrayNDInfo::validPos( iarr ); }

};


mExpClass(Basic) Array2DInfo : public ArrayNDInfo
{
public:

    virtual int         getNDim() const                 { return 2; }

    virtual od_uint64   getOffset(int,int) const;
    virtual bool        validPos(int,int) const;

    virtual od_uint64   getOffset( const int* iarr ) const
                        { return ArrayNDInfo::getOffset( iarr ); }
    virtual bool        validPos( const int* iarr ) const
                        { return ArrayNDInfo::validPos( iarr ); }

};


mExpClass(Basic) Array3DInfo : public ArrayNDInfo
{
public:

    virtual int         getNDim() const                 { return 3; }

    virtual od_uint64   getOffset(int, int, int) const;
    virtual bool        validPos(int,int,int) const;

    virtual od_uint64   getOffset( const int* iarr ) const
                        { return ArrayNDInfo::getOffset( iarr ); }
    virtual bool        validPos( const int* iarr ) const
                        { return ArrayNDInfo::validPos( iarr ); }

};


mExpClass(Basic) Array1DInfoImpl : public Array1DInfo
{
public:

    virtual Array1DInfo* clone() const
                        { return new Array1DInfoImpl(*this); }

                        Array1DInfoImpl(int nsz=0);
                        Array1DInfoImpl(const Array1DInfo&);

    virtual int         getSize(int dim) const;
    virtual bool        setSize(int dim,int nsz);
    virtual bool        isOK() const                    { return dimsz_>=0; }
    virtual od_uint64   getTotalSz() const              { return dimsz_; }

protected:

    int                 dimsz_;

};


mExpClass(Basic) Array2DInfoImpl : public Array2DInfo
{
public:

    virtual Array2DInfo* clone() const { return new Array2DInfoImpl(*this); }

                        Array2DInfoImpl(int sz0=0, int sz1=0);
                        Array2DInfoImpl(const Array2DInfo&);

    virtual int         getSize(int dim) const;
    virtual bool        setSize(int dim,int nsz);
    virtual bool        isOK() const            { return cachedtotalsz_ > 0; }

    virtual od_uint64   getTotalSz() const      { return cachedtotalsz_; }

protected:

    int                 dimsz_[2];
    od_uint64           cachedtotalsz_;

};


mExpClass(Basic) Array3DInfoImpl : public Array3DInfo
{
public:

    virtual Array3DInfo* clone() const { return new Array3DInfoImpl(*this); }

                        Array3DInfoImpl(int sz0=0, int sz1=0, int sz2=0);
                        Array3DInfoImpl(const Array3DInfo&);

    virtual int         getSize(int dim) const;
    virtual bool        setSize(int dim,int nsz);
    virtual bool        isOK() const            { return cachedtotalsz_ > 0; }
    virtual od_uint64   getTotalSz() const      { return cachedtotalsz_; }

protected:

    int                 dimsz_[3];
    od_uint64           cachedtotalsz_;

};


mExpClass(Basic) ArrayNDInfoImpl : public ArrayNDInfo
{
public:

    virtual ArrayNDInfo* clone() const;
    static ArrayNDInfo* create(int ndim);

                        ArrayNDInfoImpl(int ndim);
                        ArrayNDInfoImpl(const ArrayNDInfo&);
                        ArrayNDInfoImpl(const ArrayNDInfoImpl&);
                        ~ArrayNDInfoImpl();
    virtual bool        isOK() const            { return cachedtotalsz_ > 0; }

    virtual od_uint64   getTotalSz() const      { return cachedtotalsz_; }
    virtual int         getNDim() const;
    virtual int         getSize(int dim) const;
    virtual bool        setSize(int dim,int nsz);

protected:

    int         ndim_;
    int*                dimsz_;

    od_uint64           cachedtotalsz_;
};


inline int Array1DInfoImpl::getSize( int dim ) const
{
    return dim ? 0 : dimsz_;
}


inline int Array2DInfoImpl::getSize( int dim ) const
{
    return dim>1 || dim<0 ? 0 : dimsz_[dim];
}


inline int Array3DInfoImpl::getSize( int dim ) const
{
    return dim>2 || dim<0 ? 0 : dimsz_[dim];
}


#endif