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Rotate.h

Go to the documentation of this file.

#ifndef Impala_Core_Array_Rotate_h
#define Impala_Core_Array_Rotate_h

#include "Core/Geometry/GeoIntType.h"
#include "Core/Matrix/MatMakeTranslate2d.h"
#include "Core/Matrix/MatMakeRotate2dDeg.h"
#include "Core/Matrix/MatMul.h"
#include "Core/Array/Pattern/PatGeometricOp.h"

namespace Impala
{
namespace Core
{
namespace Array
{


template<class DstArrayT, class SrcArrayT>
inline void
Rotate(DstArrayT*& dst, SrcArrayT* src, double alpha, Geometry::GeoIntType gi,
       bool adjustSize, typename DstArrayT::ArithType background)
{
    int cx = src->CW() / 2;
    int cy = src->CH() / 2;
    Matrix::Mat* mTrans1 = Matrix::MatMakeTranslate2d(cx, cy);
    Matrix::Mat* mRot = Matrix::MatMakeRotate2dDeg(-alpha); // Y-axis points down
    Matrix::Mat* mTrans2 = Matrix::MatMakeTranslate2d(-cx, -cy);

    Matrix::Mat* mRes1 = Matrix::MatMul(mTrans1, mRot);
    Matrix::Mat* mRes2 = Matrix::MatMul(mRes1, mTrans2);
    Pattern::PatGeometricOp(dst, src, mRes2, true, gi, adjustSize, background);

    delete mTrans1;
    delete mRot;
    delete mTrans2;
    delete mRes1;
    delete mRes2;
}

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

#endif

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