Formulas are compiled to GLSL and run on the GPU. The full generated source of the vertex shader is shown below.
Formulas are defined using a simple stack based language similar to the previous TA iteration. Commands:
ctangent (mnemonic: "hypotenuse")
tcurrent time in seconds
xcurrent x value in radians
mabsolute value (mnemonic: "magnitude")
dsign (mnemonic: "direction")