CDisplayWindowPlots.h

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/* +---------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)               |
   |                          http://www.mrpt.org/                             |
   |                                                                           |
   | Copyright (c) 2005-2014, Individual contributors, see AUTHORS file        |
   | See: http://www.mrpt.org/Authors - All rights reserved.                   |
   | Released under BSD License. See details in http://www.mrpt.org/License    |
   +---------------------------------------------------------------------------+ */
#ifndef  CDisplayWindowPlots_H
#define  CDisplayWindowPlots_H

#include <mrpt/gui/CBaseGUIWindow.h>
#include <mrpt/math/CMatrixTemplateNumeric.h>
#include <mrpt/math/lightweight_geom_data.h>
#include <mrpt/utils/CImage.h>

/*---------------------------------------------------------------
        Class
  ---------------------------------------------------------------*/
namespace mrpt
{
        namespace gui
        {
                using namespace mrpt::utils;
                using namespace mrpt::math;

                class CWindowDialogPlots;

                DEFINE_MRPT_OBJECT_PRE_CUSTOM_BASE_LINKAGE(CDisplayWindowPlots,  mrpt::gui::CBaseGUIWindow, GUI_IMPEXP)

                /** Create a GUI window and display plots with MATLAB-like interfaces and commands.
                 *
                 *  For a list of supported events with the observer/observable pattern, see the discussion in mrpt::gui::CBaseGUIWindow.
                 *
                 *   See CDisplayWindowPlots::plot
                 * \ingroup mrpt_gui_grp
                 */
                class GUI_IMPEXP CDisplayWindowPlots : public mrpt::gui::CBaseGUIWindow
                {
                        // This must be added to any CObject derived class:
                        DEFINE_MRPT_OBJECT( CDisplayWindowPlots )

                public:
                        typedef void (* TCallbackMenu) (int menuID,float cursor_x, float cursor_y, void* userParam); //!< Type for the callback function used in setMenuCallback

                protected:
                        friend class CWindowDialogPlots;

                        bool            m_holdon;       //!< Whether hold_on is enabled
                        bool            m_holdon_just_disabled;
                        uint32_t        m_holdon_cnt;   //!< Counter for hold_on
                        TCallbackMenu m_callback;
                        void            *m_callback_param;

                        void internal_plot(CVectorFloat &x,CVectorFloat &y,const std::string  &lineFormat,const std::string  &plotName);
                        template <typename VECTOR1,typename VECTOR2>
                        void internal_plot_interface(const VECTOR1 &x,const VECTOR2 &y,const std::string  &lineFormat,const std::string  &plotName)
                        {
                                CVectorFloat x1(x.size()), y1(y.size());
                                const size_t N1=size_t(x.size());
                                for (size_t i=0;i<N1;i++) x1[i]=x[i];
                                const size_t N2=size_t(y.size());
                                for (size_t i=0;i<N2;i++) y1[i]=y[i];
                                this->internal_plot(x1,y1,lineFormat,plotName);
                        }
                        template <typename VECTOR1>
                        void internal_plot_interface(const VECTOR1 &y,const std::string  &lineFormat,const std::string  &plotName)
                        {
                                const size_t N=size_t(y.size());
                                CVectorFloat x1(N),y1(N);
                                for (size_t i=0;i<N;i++) { x1[i]=i; y1[i]=y[i]; }
                                this->internal_plot(x1,y1,lineFormat,plotName);
                        }

                public:

                        /** Constructor
                         */
                        CDisplayWindowPlots(
                                const std::string &windowCaption = std::string(),
                                unsigned int initialWidth = 350,
                                unsigned int initialHeight = 300 );

                        /** Class factory returning a smart pointer */
                        static CDisplayWindowPlotsPtr Create(
                                const std::string       &windowCaption,
                                unsigned int            initialWindowWidth = 400,
                                unsigned int            initialWindowHeight = 300 );

                        /** Destructor
                         */
                        virtual ~CDisplayWindowPlots();

                        /** Gets the last x,y pixel coordinates of the mouse. \return False if the window is closed. */
                        virtual bool getLastMousePosition(int &x, int &y) const;

                        /** Set cursor style to default (cursorIsCross=false) or to a cross (cursorIsCross=true) */
                        virtual void setCursorCross(bool cursorIsCross);

                        /** Resizes the window, stretching the image to fit into the display area.
                         */
                        void  resize( unsigned int width, unsigned int height );

                        /** Changes the position of the window on the screen.
                         */
                        void  setPos( int x, int y );

                        /** Changes the window title text.
                          */
                        void  setWindowTitle( const std::string &str );

                        /** Enable/disable the feature of pan/zoom with the mouse (default=enabled)
                        */
                        void  enableMousePanZoom( bool enabled );

                        /** Adds a new layer with a 2D plot based on two vectors of X and Y points, using a MATLAB-like syntax.
                          *  Each call to this function creates a new plot, unless the plot name coincides with an already existing plot: in this case the X & Y points are used to update this existing layer (this also applies to using the default plot name).
                          *  If "hold_on" is enabled, then every call will always create a new plot, even if no "plotName" is provided.
                          *
                          *  The lineFormat string is a combination of the following characters:
                          * - Line styles:
                          *             - '.': One point for each data point
                          *             - '-': A continuous line
                          *             - ':': A dashed line
                          * - Colors:
                          *             - k: black
                          *             - r: red
                          *             - g: green
                          *             - b: blue
                          *             - m: magenta
                          *             - c: cyan
                          * - Line width:
                          *             - '1' to '9': The line width (default=1)
                          *
                          *  Examples:
                          *   - 'r.' -> red points.
                          *   - 'k3' or 'k-3' -> A black line with a line width of 3 pixels.
                          * \note The vectors x & y can be of types: float or double.
                          * \sa axis, axis_equal, axis_fit, clear, hold_on, hold_off
                          * \tparam VECTOR Can be std::vector<float/double> or mrpt::dynamicsize_vector<float/double> or a column/row Eigen::Matrix<>
                          */
                        template <typename T1,typename T2> inline void plot(const std::vector<T1> &x,const std::vector<T2> &y,const std::string  &lineFormat = std::string("b-"),const std::string  &plotName = std::string("plotXY") ) { this->internal_plot_interface(x,y,lineFormat,plotName); }
                        //! \overload
                        template <typename T1,typename Derived2> inline void plot(const std::vector<T1> &x,const Eigen::MatrixBase<Derived2> &y,const std::string  &lineFormat = std::string("b-"),const std::string  &plotName = std::string("plotXY") ) { this->internal_plot_interface(x,y,lineFormat,plotName); }
                        //! \overload
                        template <typename Derived1,typename T2> inline void plot(const Eigen::MatrixBase<Derived1> &x,const std::vector<T2> &y,const std::string  &lineFormat = std::string("b-"),const std::string  &plotName = std::string("plotXY") ) { this->internal_plot_interface(x,y,lineFormat,plotName); }
                        //! \overload
                        template <typename Derived1,typename Derived2> inline void plot(const Eigen::MatrixBase<Derived1> &x,const Eigen::MatrixBase<Derived2> &y,const std::string  &lineFormat = std::string("b-"),const std::string  &plotName = std::string("plotXY") ) { this->internal_plot_interface(x,y,lineFormat,plotName); }

                        //! \overload
                        template <typename T> void plot(const std::vector<T> &y,const std::string  &lineFormat = std::string("b-"),const std::string  &plotName = std::string("plotXY") ) { this->internal_plot_interface(y,lineFormat,plotName); }
                        //! \overload
                        template <typename Derived> void plot(const Eigen::MatrixBase<Derived> &y,const std::string  &lineFormat = std::string("b-"),const std::string  &plotName = std::string("plotXY") ) { this->internal_plot_interface(y,lineFormat,plotName); }

                        /** Set the view area according to the passed coordinated. */
                        void axis( float x_min, float x_max, float y_min, float y_max, bool aspectRatioFix = false );

                        /** Enable/disable the fixed X/Y aspect ratio fix feature (default=disabled). */
                        void axis_equal(bool enable=true);

                        /** Fix automatically the view area according to existing graphs. */
                        void axis_fit(bool aspectRatioFix=false);

                        /** Plots a 2D ellipse given its mean, covariance matrix, and
                          *  Each call to this function creates a new plot, unless the plot name coincides with an already existing plot: in this case the new values are used to update this existing layer (this also applies to using the default plot name).
                          *  If "hold_on" is enabled, then every call will always create a new plot, even if no "plotName" is provided.
                          *
                          *  For a description of lineFormat see CDisplayWindowPlots::plot.
                          *  The "quantiles" value determines the confidence interval for the ellipse:
                          *     - 1 : 68.27% confidence interval
                          *     - 2 : 95.45%
                          *     - 3 : 99.73%
                          *     - 4 : 99.994%
                          * \note This method can be called with 2x2 fixed-sized or dynamic-size matrices of types: float or double.
                          * \sa axis, axis_equal, axis_fit, hold_on, hold_off
                          */
                        template <typename T>
                        void GUI_IMPEXP plotEllipse(
                                const T mean_x,
                                const T mean_y,
                                const CMatrixTemplateNumeric<T> &cov22,
                                const float quantiles,
                                const std::string  &lineFormat = std::string("b-"),
                                const std::string  &plotName = std::string("plotEllipse"),
                                bool showName = false);

                        //! \overload
                        template <typename T>
                        void GUI_IMPEXP plotEllipse(
                                const T mean_x,
                                const T mean_y,
                                const CMatrixFixedNumeric<T,2,2> &cov22,
                                const float quantiles,
                                const std::string  &lineFormat = std::string("b-"),
                                const std::string  &plotName = std::string("plotEllipse"),
                                bool showName = false);

                        /** Adds a bitmap image layer.
                          *  Each call to this function creates a new layer, unless the plot name coincides with an already existing plot: in this case the new values are used to update this existing layer (this also applies to using the default plot name).
                          *
                          * \sa axis, axis_equal, axis_fit, hold_on, hold_off
                          */
                        void image(
                                const utils::CImage &img,
                                const float &x_left,
                                const float &y_bottom,
                                const float &x_width,
                                const float &y_height,
                                const std::string  &plotName = std::string("image") );


                        /** Remove all plot objects in the display.
                          * \sa plot
                          */
                        void clear();

                        /** Remove all plot objects in the display (clear and clf do exactly the same).
                          * \sa plot, hold_on, hold_off
                          */
                        inline void clf() {
                                clear();
                        }

                        /** Enables keeping all the graphs, instead of overwritting them.
                          * \sa hold_off, plot
                          */
                        void hold_on();

                        /** Disables keeping all the graphs (this is the default behavior).
                          * \sa hold_on, plot
                          */
                        void hold_off();

                        /** Disables keeping all the graphs (this is the default behavior).
                          * \param label The text that appears in the new popup menu item.
                          * \param menuID Any positive number (0,1,..). Used to tell which menu was selected in the user callback.
                          * \sa setMenuCallback
                          */
                        void addPopupMenuEntry( const std::string &label, int menuID );


                        /** Must be called to have a callback when the user selects one of the user-defined entries in the popup menu.
                          * \sa addPopupMenuEntry
                          */
                        void setMenuCallback(TCallbackMenu userFunction, void* userParam = NULL );


                }; // End of class def.
                DEFINE_MRPT_OBJECT_POST_CUSTOM_BASE_LINKAGE(CDisplayWindowPlots,  mrpt::gui::CBaseGUIWindow, GUI_IMPEXP)
        }

} // End of namespace

#endif