|| || || || || || || ||

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M9poHUEw.h

Go to the documentation of this file.

#ifndef Impala_Core_Array_Trait_M9poHUEw_h
#define Impala_Core_Array_Trait_M9poHUEw_h

#include "Core/Array/Pattern/Categories.h"
#include "Core/Array/Element/E1Sqrt.h"

namespace Impala
{
namespace Core
{
namespace Array
{
namespace Trait
{


template<class DstArrayT, class SrcArrayT>
class M9poHUEw
{
public:
    typedef Pattern::TagTransInVar TransVarianceCategory;

    typedef Pattern::TagCallValue CallCategory;

    typedef typename DstArrayT::ArithType DstArithT;
    typedef typename SrcArrayT::ArithType SrcArithT;

    M9poHUEw()
    {
    }

    DstArithT
    DoIt(const SrcArithT& R, const SrcArithT& G, const SrcArithT& B,
         const SrcArithT& Rx, const SrcArithT& Gx, const SrcArithT& Bx,
         const SrcArithT& Ry, const SrcArithT& Gy, const SrcArithT& By)
    {
        SrcArithT div = (B*B+G*G+R*R-G*R-B*R-B*G);
        SrcArithT f_Obx = (G-B)*Rx+(B-R)*Gx+(R-G)*Bx;
        SrcArithT f_Oby = (G-B)*Ry+(B-R)*Gy+(R-G)*By;

        SrcArithT f_Hue = .5*sqrt(3.)*Element::E1Sqrt(f_Obx*f_Obx + f_Oby*f_Oby) / div;
        return f_Hue;
    }

};

} // namespace Trait
} // namespace Array
} // namespace Core
} // namespace Impala

#endif

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