SeeedTouchScreen.h

/*
    SeeedTouchScreen.h - Library for 4-line resistance touch screen.
    Modified by loovee Aug 12, 2012.
    (c) ladyada / adafruit
    Code under MIT License.
*/
#define __PRESSURE 10
#define __PRESURE __PRESSURE    // Previous misspelled macro left for backwards compatibility

#if defined(PORT_IOBUS)
    // On SAMD21, redefine digitalPinToPort() to use the slightly-faster
    // PORT_IOBUS rather than PORT (not needed on SAMD51).
    #undef  digitalPinToPort
    #define digitalPinToPort(P) (&(PORT_IOBUS->Group[g_APinDescription[P].ulPort]))
#endif // end PORT_IOBUS


class Point {
  public:
    int x, y, z;

  public:
    Point(void);
    Point(int x, int y, int z);
    bool operator==(Point);
    bool operator!=(Point);

};

class TouchScreen {
  private:
    unsigned char _yp, _ym, _xm, _xp;

  public:
    TouchScreen(unsigned char xp, unsigned char yp, unsigned char xm, unsigned char ym);
    bool isTouching(void);
    Point getPoint();

};