pub fn banked_section(curve: &Banked3, d: Scalar) -> GeomResult<BankedSection>Expand description
The section at plan distance d: rotation point, rolled frame, cant,
bank angle and roll.
ยงErrors
As banked_point, and by name: a cant beyond the rail-head distance,
beyond the vertical span b cos(theta) under a vertical-rise
convention, an angle piece beyond a quarter turn, an angle piece in the
pivot law, a bad rail-head distance.