Subversion Repositories libOLED

// A display for X, Y data

#pragma once

#include "libOLED/displayclass.H"

class displayXY_t

{

    /// \param display the parent display

    /// \param xmin minimum X axis value

    /// \param xmax maximum X axis value

public:

    /// \param siz = size

    displayXY_t(display_t &disp,

                int xmin, int xmax, int ymin, int ymax);

    void drawAxes();

    void plotPoint(int x, int y, char *message = nullptr,char * message_lower = nullptr, char * message_upper=nullptr);

private:

    display_t &display;

    const int x_min;

    const int x_max;

    const int y_min;

    const int y_max;

    const int left_margin;

    const int right_margin;

    const int plot_width;

    const int top_margin;

    const int bottom_margin;

    const int plot_height;

    /// @brief persistent storage - a trail of pixels follow the plotted point. .

    static unsigned const PERSIST= 300;

    uint8_t persist_x[PERSIST];

    uint8_t persist_y[PERSIST];

    // large enough to hold value 0..PERSIST-1

    uint16_t next_persist;

};