Struct WayClass 

pub struct WayClass {
    pub min_width: u32,
    pub max_width: u32,
    pub min_clearance: u32,
}

A way class — the vocabulary a layout-graph node declares for a place whose footprint is bounded in one axis and free in the other: a road, a causeway, a corridor, a duct (spec-0053 §3).

Why it is a second kind of classification and not a rung

The size-class ladder classifies a place by both horizontal extents at once, and that is what it is for. A route has no second extent to classify: a cut ledge one body wide climbing a whole seaward face is 4 by 90, and for any rung to admit it that rung would have to span 4..90 on an axis — a class in which an alcove and an expanse are the same thing has stopped classifying. The failure is by KIND, not by margin, which is why no calibration of the ladder reaches it.

What it bounds, and what it deliberately does not

A way class bounds the cross-section — the axis a body feels walking it — and says nothing whatever about the run. A route’s length is per-campaign geometry, not a standard: a village lane, a canyon rim trail, a ship’s gangway and a mine gallery are the same class of thing at four wildly different lengths, and a max_length here would be this month’s map wearing a standard’s clothes. The run is measured, into pacing, and is never compared against anything (spec-0053 §7).

The elongation demand a way-classed box must satisfy is therefore structural rather than a constant: the run must exceed Self::max_width, which is exactly what a room cannot supply. A square box can never qualify, because its “run” equals its width and one number cannot both be <= max_width and exceed it. That is what makes “declare it a way to escape the ladder” refused by the object’s own shape rather than by a rule the author could satisfy by choosing differently.

Fields

min_width: u32

Narrowest cross-section, in cells, inclusive. Never below the physical passable width — Metrics::self_check holds it there.

max_width: u32

Widest cross-section, in cells, inclusive. Doubles as the elongation floor: a way-classed box’s run must exceed this.

min_clearance: u32

Least interior clearance, in cells.

Trait Implementations

impl Clone for WayClass

fn clone(&self) -> WayClass

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for WayClass

impl Debug for WayClass

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for WayClass

impl PartialEq for WayClass

fn eq(&self, other: &WayClass) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for WayClass

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for WayClass