[x] Allow user input to define the equation to display
[ ] Show errors if the equation is silly (please don't do cos(1/x)...)
[ ] Create a list of waypoints out of the equation for the train to follow. Should include detecting if the track is discontinous so the train doesn't teleport.
[ ] Either morph track asset onto it or programmatically generate track with equation
Equation in box, equation displays in the bigger box.
We can worry about getting the train to move over it, and rendering as track, later