Here's a contour map of the "
skim" method with gain=0.5.
Here's a contour map of the
linear interpolation method with a=0.5 and b=1.0
Notice that the contour maps are identical all around the perimeter, but differ in how they get there. The linear one tries to provide linear response to the joystick
in both X and Y directions. How that plays out in actual use is an open question. I'd like to hear back from teams who have tried the linear interpolation arcade.