Function cone_parameters 

pub fn cone_parameters(
    cone: &Cone,
    p: Point,
    tol: Tolerances,
) -> OgeomResult<(f64, f64)>

The (angle, height) of the point on a cone nearest p.

In the half-plane through the axis and p the cone is two rays from the apex: its own nappe at p’s angle, and the far nappe, past the apex, half a turn round (where the radius runs negative). The foot is the nearer of p’s feet on the two.

Errors

OgeomError::Construction if p lies on the axis.