Function cvCartToPolar

deps/opencv/modules/core/src/mathfuncs.cpp:2235–2260

CV_IMPL float cvFastArctan(float y, float x) { return cv::fastAtan2(y, x); }

CV_IMPL void
cvCartToPolar( const CvArr* xarr, const CvArr* yarr,
               CvArr* magarr, CvArr* anglearr,
               int angle_in_degrees )
{
    cv::Mat X = cv::cvarrToMat(xarr), Y = cv::cvarrToMat(yarr), Mag, Angle;
    if( magarr )
    {
        Mag = cv::cvarrToMat(magarr);
        CV_Assert( Mag.size() == X.size() && Mag.type() == X.type() );
    }
    if( anglearr )
    {
        Angle = cv::cvarrToMat(anglearr);
        CV_Assert( Angle.size() == X.size() && Angle.type() == X.type() );
    }
    if( magarr )
    {
        if( anglearr )
            cv::cartToPolar( X, Y, Mag, Angle, angle_in_degrees != 0 );
        else
            cv::magnitude( X, Y, Mag );
    }
    else
        cv::phase( X, Y, Angle, angle_in_degrees != 0 );
}

CV_IMPL void
cvPolarToCart( const CvArr* magarr, const CvArr* anglearr,