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VxFrmFtorHistToDiff.h

/*
 *
 *  Copyright (c) 2001, TNO TPD, The Netherlands.
 *  All rights reserved. No part of this software may be handed to or used by persons 
 *  or organisation outside Kenniscentrum Watergraafsmeer (UvA-ISIS, TNO TPD) without 
 *  the written permission of TNO TPD.
 *
 *  Author(s):
 *      Jan Baan (baan@tpd.tno.nl)
 *      Jeroen Vendrig
 *
 * 
 */

#ifndef VxFrmFtorHistToDiff_h
#define VxFrmFtorHistToDiff_h

#include "VxFrmFtorDfo.h"
#include "HxHistogram.h"

class VxFrmFtorHistToDiff : public VxFrmFtorDfo {
public:
    VxFrmFtorHistToDiff(){};
    
    virtual VxValue         doIt(int frame, const VxValue& input1, const VxValue& input2) {
        if (input1.isNull() || input2.isNull())
            return VxValue();
        
        HxHistogram hist1, hist2;
        input1.get(hist1);
        input2.get(hist2);
        
        return VxValue((double) hist1.chiSquareNorm(hist2));
    };
        
    virtual HxString        getInputClass() const {
        return HxString("HxHistogram");
    }
    virtual HxString        getOutputClass() const {
        return HxString("double");
    }

    virtual HxString    name() const {
        return HxString("HistToDiff");
    }

    virtual VxFrmFtorDfo*   clone() const {
        return new VxFrmFtorHistToDiff();
    }
    
private:    
    
};
#endif

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