mathattrib.h

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#ifndef mathattrib_h
#define mathattrib_h

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Nanne Hemstra
 Date:          May 2005
 RCS:           $Id$
________________________________________________________________________

-*/

#include "attributesmod.h"
#include "attribprovider.h"

namespace Math { class Formula; class SpecVarSet; }

namespace Attrib
{

mExpClass(Attributes) Mathematics : public Provider
{
public:
    static void                 initClass();
                                Mathematics(Desc&);

    static const char*          attribName()            { return "Math"; }
    static const char*          expressionStr()         { return "expression"; }
    static const char*          cstStr()                { return "constant"; }
    static const char*          recstartvalsStr()       {return "recstartvals";}

    static const Math::SpecVarSet&      getSpecVars();

protected:
                                ~Mathematics()  {}
    static Provider*            createInstance(Desc&);
    static void                 updateDesc(Desc&);

    bool                        getInputOutput(int in,TypeSet<int>& res) const;
    bool                        getInputData(const BinID&, int);
    bool                        computeData(const DataHolder&,const BinID& pos,
                                            int t0,int nrsamples,
                                            int threadid) const;

    bool                        allowParallelComputation() const;

    const Interval<float>*      desZMargin(int input,int) const;
    const Interval<int>*        reqZSampMargin(int input,int) const;

private:
    ObjectSet<const DataHolder> inputdata_;
    TypeSet<int>                inputidxs_;

    ::Math::Formula*            formula_;
    Interval<float>             desintv_;
    Interval<int>               reqintv_;

};

}; // namespace Attrib

#endif