CalculateOptimalScale.h

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// -*- c-basic-offset: 4 -*-
#ifndef _BASICALGORITHMS_CALCULATEOPTIMALSCALE_H
#define _BASICALGORITHMS_CALCULATEOPTIMALSCALE_H

#include <hugin_shared.h>
#include <algorithms/PanoramaAlgorithm.h>

#include <panodata/PanoramaData.h>



namespace HuginBase {


class IMPEX CalculateOptimalScale : public PanoramaAlgorithm
{

    public:
        explicit CalculateOptimalScale(PanoramaData& panorama)
            : PanoramaAlgorithm(panorama), o_optimalScale(0)
        {}
        
        virtual ~CalculateOptimalScale()
        {}
        
        
    public:
        virtual bool modifiesPanoramaData() const
            { return false; }
            
        virtual bool runAlgorithm()
        {
            o_optimalScale =  calcOptimalScale(o_panorama);
            return true; // let's hope so.
        }
        
    public:
        static double calcOptimalScale(PanoramaData& panorama);
        
        static double calcOptimalPanoScale(const SrcPanoImage & src,
                                           const PanoramaOptions & dest);
        
        virtual double getResultOptimalScale()
        {
            // [TODO] if(!hasRunSuccessfully()) DEBUG;
            return o_optimalScale;
        }
        
        virtual unsigned getResultOptimalWidth()
        {
            // [TODO] if(!hasRunSuccessfully()) DEBUG;
            return hugin_utils::roundi(getResultOptimalScale() * o_panorama.getOptions().getWidth());
        }
        
    protected:
        double o_optimalScale;
        
};


class SetWidthOptimal : public CalculateOptimalScale
{
    public:
        explicit SetWidthOptimal(PanoramaData& panorama)
         : CalculateOptimalScale(panorama)
        {}

        virtual ~SetWidthOptimal()
        {}
    
    
    public:
        virtual bool modifiesPanoramaData() const
            { return true; }
        
        virtual bool runAlgorithm()
        {
            bool success = CalculateOptimalScale::runAlgorithm();
            if(success)
            {
                PanoramaOptions opts = o_panorama.getOptions();
                opts.setWidth(getResultOptimalWidth());
                o_panorama.setOptions(opts);
            }
            return success;
        }
};


} //namespace
#endif