Optitrack SDK interface demo

Demonstration file on how to interface directly with Natural Points USB cameras (TrackIR or FLEX)

% optitrack_data()
%
% This function demonstrates basic functionality of Optitrack SDK for
% communicating with Natural Point cameras. This has been specifically
% designed to work with the TrackIR4 camera (a small USB camera for
% tracking objects). The camera must be plugged in and device drivers
% installed. This should also work for the Optitrack cameras (FLEX).
%
% Written by Glen Lichtwark, University of Queensland, Australia
% Last updated: 22nd Jan 2010
% Please acknowledge in any academic papers which may utilise this code

%% PLEASE NOTE. OPTITRACK SDK HAS RECENTLY BEEN SUPERCEDED BY CAMERA SDK WHICH IS IMPLEMENTED IN A DIFFERENT WAY AND THEREFORE THIS DEMO IS OUT OF DATE!!! I WILL WORK ON A NEW DEMO OF THE CAMERA SDK FOR POSTING AT A LATER DATE.