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

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Mirror.h

Go to the documentation of this file.

#ifndef Impala_Core_Array_Mirror_h
#define Impala_Core_Array_Mirror_h

namespace Impala
{
namespace Core
{
namespace Array
{

// mirror along the Y axis (e.g. the X coordinates are negated)
// function also works inplace
template<class DstArrayT, class Src1ArrayT>
inline void
MirrorY(DstArrayT*& dst, Src1ArrayT* src1)
{
    if (dst == 0)
        dst = ArrayClone<DstArrayT>(src1);
    // this function also mirrors the borders
    for(int y = 0; y < src1->H(); y++)
    {
        for(int x = 0; x < src1->W() / 2; x++)
        {
            int x2 = src1->W() - x - 1;
            typename Src1ArrayT::ArithType tmp = src1->Value(x, y);
            typename Src1ArrayT::ArithType tmp2 = src1->Value(x2, y);
            dst->SetValue(tmp, x2, y);
            dst->SetValue(tmp2, x, y);
        }
    }
}

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

#endif

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