Panda3D

vrpnTracker.h

00001 // Filename: vrpnTracker.h
00002 // Created by:  drose (25Jan01)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef VRPNTRACKER_H
00016 #define VRPNTRACKER_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "vrpn_interface.h"
00021 
00022 #include "pvector.h"
00023 
00024 class VrpnTrackerDevice;
00025 
00026 ////////////////////////////////////////////////////////////////////
00027 //       Class : VrpnTracker
00028 // Description : This is the actual interface to a particular VRPN
00029 //               tracker object, and all of its sensors.  A pointer to
00030 //               this object is stored in the VrpnClient class for
00031 //               each differently-named VRPN tracker we connect to.
00032 //
00033 //               The VRPN callbacks go here, which in turn get
00034 //               vectored out to any VrpnTrackerDevice objects that
00035 //               register with this.  When the last VrpnTrackerDevice
00036 //               object unregisters, the VrpnTracker will be deleted
00037 //               by the VrpnClient.
00038 //
00039 //               This class does not need to be exported from the DLL.
00040 ////////////////////////////////////////////////////////////////////
00041 class VrpnTracker {
00042 public:
00043   VrpnTracker(const string &tracker_name, vrpn_Connection *connection);
00044   ~VrpnTracker();
00045 
00046   INLINE const string &get_tracker_name() const;
00047   INLINE bool is_empty() const;
00048 
00049   void mark(VrpnTrackerDevice *device);
00050   void unmark(VrpnTrackerDevice *device);
00051 
00052   INLINE void poll();
00053 
00054   void output(ostream &out) const;
00055   void write(ostream &out, int indent_level = 0) const;
00056 
00057 private:
00058   static void VRPN_CALLBACK
00059   vrpn_position_callback(void *userdata, const vrpn_TRACKERCB info);
00060   static void VRPN_CALLBACK
00061   vrpn_velocity_callback(void *userdata, const vrpn_TRACKERVELCB info);
00062   static void VRPN_CALLBACK
00063   vrpn_acceleration_callback(void *userdata, const vrpn_TRACKERACCCB info);
00064 
00065 private:
00066   string _tracker_name;
00067   vrpn_Tracker_Remote *_tracker;
00068 
00069   typedef pvector<VrpnTrackerDevice *> Devices;
00070   Devices _devices;
00071 };
00072 
00073 INLINE ostream &operator << (ostream &out, const VrpnTracker &tracker) {
00074   tracker.output(out);
00075   return out;
00076 }
00077 
00078 #include "vrpnTracker.I"
00079 
00080 #endif
00081 
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