controller processing activity with game controller

[shearer12345]

along the lines of http://www.gamasutra.com/blogs/RyanJuckett/20160329/268937/Interpreting_Analog_Sticks_in_INVERSUS.php

[shearer12345]

with mouse processing also?

• show something where the mouse is
  • under varied screen conditions (normal, scaled, scaled, with dissimilar aspect ratio)
• picking? clicking on rectangles, hover, etc