Method Draw

example/CarsCounting.h:271–289

\brief Draw \param frame

    /// \param frame
    ///
    void Draw(cv::Mat frame) const
    {
        auto Ptf2i = [&](cv::Point2f pt)
        {
            return cv::Point(cvRound(frame.cols * pt.x), cvRound(frame.rows * pt.y));
        };

        cv::line(frame, Ptf2i(m_pt1), Ptf2i(m_pt2), cv::Scalar(0, 255, 255), 1, cv::LINE_8, 0);

        std::string label = "Line " + std::to_string(m_uid) + ": " + std::to_string(m_intersect1) + "/" + std::to_string(m_intersect2);
		int baseLine = 0;
		double fontScale = 0.7;
		int thickness = 1;
        cv::Size labelSize = cv::getTextSize(label, cv::FONT_HERSHEY_SIMPLEX, fontScale, 1, &baseLine);
		cv::Point pt(Ptf2i(0.5f * (m_pt1 + m_pt2)));
		pt.y += labelSize.height;
		//pt.x += labelSize.width;
        cv::putText(frame, label, pt, cv::FONT_HERSHEY_TRIPLEX, fontScale, cv::Scalar(0, 0, 0), thickness);
    }

    ///
    /// \brief IsIntersect