vrpn_Spaceball.h

#ifndef VRPN_SPACEBALL_H
#define VRPN_SPACEBALL_H
 
#include "vrpn_Analog.h" // for vrpn_Serial_Analog
#include "vrpn_Button.h" // for vrpn_Button_Filter
#include "vrpn_Configure.h" // for VRPN_API
#include "vrpn_Connection.h" // for vrpn_CONNECTION_LOW_LATENCY, etc
#include "vrpn_Shared.h" // for timeval
#include "vrpn_Types.h" // for vrpn_uint32
 
class VRPN_API vrpn_Spaceball: public vrpn_Serial_Analog
            ,public vrpn_Button_Filter
{
 public:
    vrpn_Spaceball (const char * name, vrpn_Connection * c,
 const char * port, int baud);
 
    ~vrpn_Spaceball () {};
 
    /// Called once through each main loop iteration to handle updates.
 virtual void mainloop ();
 
 virtual int reset(void);  ///< Set device back to starting config
 
 protected:
 int _numbuttons;          ///< How many buttons to open
 int _numchannels;         ///< How many analog channels to open
 unsigned char buf[512];    ///< Buffer of characters in report,
 int bufpos;               ///< Current char pos in buffer 
 int packtype;             ///< What kind of packet we are decoding
 int packlen;              ///< Expected packet length
 int escapedchar;          ///< We're processing an escaped char
 int erroroccured;         ///< A device error has occurred
 int resetoccured;         ///< A reset event has occurred
 int spaceball4000;        ///< We found a Spaceball 4000
 int leftymode4000;        ///< Spaceball 4000 is in lefty mode
 int null_radius;          ///< range where no motion should be reported
 struct timeval timestamp; ///< Time of the last report from the device
 
 virtual void clear_values(void); ///< Set all buttons, analogs and encoders back to 0
 
    /// Try to read reports from the device.  Returns 1 if a complete 
        /// report received, 0 otherwise.  Sets status to current mode.
 virtual int get_report(void);
 
    /// send report iff changed
 virtual void report_changes
                   (vrpn_uint32 class_of_service
                    = vrpn_CONNECTION_LOW_LATENCY);
 
        /// send report whether or not changed
 virtual void report
                   (vrpn_uint32 class_of_service
                    = vrpn_CONNECTION_LOW_LATENCY);
 
 // NOTE:  class_of_service is only applied to vrpn_Analog
 //  values, not vrpn_Button, which are always vrpn_RELIABLE
};
 
#endif