Method getBoundingRect

CvPlot/examples/examples_core.cpp:346–349

            cv::cvtColor(mat, renderTarget.innerMat(), cv::COLOR_GRAY2BGR);
        }
        bool getBoundingRect(cv::Rect2d &rect) override {
            rect = cv::Rect2d(-1.5, -1, 2, 2);
            return true;
        }
    };
    Axes axes = makePlotAxes();
    axes.create<Mandelbrot>();