pub fn least_distance<PA: Piece + Clone, PB: Piece + Clone>(
a: Vec<PA>,
b: Vec<PB>,
handoff: Scalar,
max_nodes: usize,
) -> GeopResult<Nearest<PA::At, PB::At>>Expand description
The least distance between the set a is pieces of and the set b is
pieces of (see the module docs).
Fails only if neither set attains a point in any piece searched.