max_dim

Bounding-box width (the short side of a merged region’s axis-aligned bounding box) must be at most value. The dual of max_length, and the bounding-box counterpart of max_width.

Semantics

For each merged region on the rule’s layer, take its axis-aligned bounding box (x0, y0)-(x1, y1) and compute width = min(x1 - x0, y1 - y0). A region whose width exceeds value is a violation.

As with min_dim, this is a whole-region bounding-box measurement, not a facing-wall scan — exact for simple rectangular features, and useful precisely because it leaves the region’s other dimension (its length) to a separate rule.

Layers

A single layer, layers[0].

Parameters

None — only value (µm).

Violation markers

One point marker per offending merged region, at its centroid (owned by the tile whose core contains that centroid).

KLayout equivalent

Not a single built-in KLayout Region operator — a bounding-box measurement (Region#extents sizes), analogous to filtering on Region#extents.width/.height in a KLayout DRC script.

Example

- id: CntB.a
  check: max_dim
  layers: [ContBar]
  value: 0.16