Automatically load a saved settings.xml file at startup. This is created by pressing the 'save' button in the top-right of the GUI, where the calibration settings are set.
Also added the ability to shift the whole presentation to anywhere in the application window, by using the _presentationOffset variable in ofApp.h (testApp class). Input from the mouse is moved into this coordinate system by subtracting the offset, and the 'raw' particles are given this offset as well. The glows of the particles do not get the offset: they are rendered into an FBO, en _this_ is the object that gets the offset at draw-time.