Function place_on_spine 

pub fn place_on_spine(
    model: &mut Model,
    profile: &Shape,
    spine: &Shape,
    placement: PipePlacement,
    tol: Tolerances,
) -> OgeomResult<Built>

A planar profile (a face, or a closed wire) moved rigidly onto the start of spine as placement asks: turned about its centroid until it stands square to the spine’s start tangent where correction, and moved so its centroid is the spine’s start point where contact. The result is a fresh profile, ready for make_pipe_shell and the sweeps like it; the history records it as the profile modified.

Errors

OgeomError::Construction if the profile is not a planar face or closed wire, or the spine is not an edge or a wire with a tangent at its start.