opencv polylines

opencv  polylines

void polylines( InputOutputArray _img, const Point* const* pts, const int* npts, int ncontours, bool isClosed,
                const Scalar& color, int thickness, int line_type, int shift )
{
    CV_INSTRUMENT_REGION();

    Mat img = _img.getMat();

    if( line_type == CV_AA && img.depth() != CV_8U )
        line_type = 8;

    CV_Assert( pts && npts && ncontours >= 0 &&
               0 <= thickness && thickness <= MAX_THICKNESS &&
               0 <= shift && shift <= XY_SHIFT );

    double buf[4];
    scalarToRawData( color, buf, img.type(), 0 );

    for( int i = 0; i < ncontours; i++ )
    {
        std::vector<Point2l> _pts(pts[i], pts[i]+npts[i]);
        PolyLine( img, _pts.data(), npts[i], isClosed, buf, thickness, line_type, shift );
    }
}

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