Method render

CvPlot/examples/examples_gui.cpp:184–186

            return cv::Rect2d(p - diag2, p + diag2);
        }
        void render(RenderTarget &renderTarget) override {
            cv::rectangle(renderTarget.innerMat(), getRect(renderTarget), cv::Scalar::all(0), cv::FILLED);
        }
        bool getBoundingRect(cv::Rect2d &rect) override {
            return false;
        }