cartToPolar.cpp

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#include "mexopencv.hpp"
using namespace std;
using namespace cv;

void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
    // Check the number of arguments
    nargchk(nrhs>=2 && (nrhs%2)==0 && nlhs<=2);

    // Argument vector
    vector<MxArray> rhs(prhs, prhs+nrhs);

    // Option processing
    bool angleInDegrees = false;
    for (int i=2; i<nrhs; i+=2) {
        string key(rhs[i].toString());
        if (key == "Degrees")
            angleInDegrees = rhs[i+1].toBool();
        else
            mexErrMsgIdAndTxt("mexopencv:error",
                "Unrecognized option %s", key.c_str());
    }

    // Process
    Mat x(rhs[0].toMat(rhs[0].isSingle() ? CV_32F : CV_64F)),
        y(rhs[1].toMat(rhs[1].isSingle() ? CV_32F : CV_64F)),
        mag, angle;
    cartToPolar(x, y, mag, angle, angleInDegrees);
    plhs[0] = MxArray(mag);
    if (nlhs > 1)
        plhs[1] = MxArray(angle);
}