Constant Scalar — A scalar field with the same value everywhere.
Expression Field — A scalar field given by a formula in `x`, `y` and `z`, such as `sin(x) * 2 + z`.
Morph Field — Tells where each point sits between two shapes: −1 on and inside `a`, +1 on and inside `b`, with a smooth ramp across the gap, computed as (a − b) / (|a| + |b|).
Normal Angle — A field giving, at each point, the angle in degrees (0 to 180) between the Solid's outward normal and `direction`.
Position — A vector field whose value at every point is that point's own coordinates (x, y, z).