It is possible to start MouseTrap like this:
Choose Applications ▸ Accessibility ▸ MouseTrap.
MouseTrap has a default settings command that will write the default configuration settings into the current user folder, after this it is possible to change this settings using the Prefferences Gui.
Command:
mouseTrap --default-settings
The viewer frame is the second frame opened when MouseTrap starts.
It is composed by 2 main widgets, a Point Mapper which is a simple cartesian plane showing the relative position of the forehead point from the center (Where it was first detected). The second widget is a Video showing the current captured frame of the webcam, it allows users to know the state of the point in the face.
There are also 3 other widgets above the previusly explaned, those widgets are:
Hide or Show the point Mapper
Hide or Show the capture widget
This will flip the captured image horizontaly inverting the X axis.
In some cases the webcams capture images working as a mirror and this will make mousetrap invert the X axis, so it is possible in those cases to flip the image.
NOTE: It is hardly not recomended to hide the Point Mapper and the Capture view, this widgets are really useful for users to understand whats happening with mousetrap and how it is working.
Note: The click panel can be used just with the "Holde Mode".