LayeredLayout.Compaction.HorizontalGraphCompactor

data CompactionStrategy

Which compaction algorithm to drive. Only EdgeLength is wired so far — it uses NetworkSimplexCompaction with the transformer's hooks.

Constructors

• EdgeLength

Instances

• Eq CompactionStrategy

type WithinLayerSpacings = { edgeEdge :: Number, nodeNode :: Number }

Global perpendicular-axis spacings in fine-grid units. These drive the scanline hitboxes independently of the between-layer matrix.

defaultWithinLayerSpacings :: WithinLayerSpacings

type BetweenLayersSpacings = { edgeEdge :: Number, edgeNode :: Number, nodeNode :: Number }

The BETWEEN_LAYERS spacing matrix the compactor's spacings handler hands back per node-type pair. Mirrors ELK's nodeTypeSpacingOptionsHorizontal (BETWEEN_LAYERS column): the three pairs markgraf models are node↔node, edge↔node and edge↔edge. Values are in router-grid units (the unit every CNode is promoted to inside the compactor), which equal ELK's option values directly:

• nodeNode = layered.spacing.nodeNodeBetweenLayers
• edgeNode = layered.spacing.edgeNodeBetweenLayers
• edgeEdge = layered.spacing.edgeEdgeBetweenLayers LABEL/LABEL is the source matrix exception: it uses global edge-edge spacing even along the between-layer axis.

defaultBetweenLayersSpacings :: BetweenLayersSpacings

The values the current test graphs (hugeGraph + ElkDiff panels) are validated against: hugeGraph overrides node-node and edge-node downward from ELK's 20/10 defaults, and edge-edge stays at ELK's SPACING_EDGE_EDGE_BETWEEN_LAYERS default of 10.

compactPostRouting :: CompactionStrategy -> WithinLayerSpacings -> BetweenLayersSpacings -> { edges :: Array Edge, nodes :: Array NodePlacement, paths :: Array EdgePath, ports :: Map NodeId (Array Port) } -> { boundingBox :: GridRect, edges :: Array EdgePath, nodes :: Array NodePlacement }

Run post-routing compaction along markgraf's layer-growth axis (Y). Returns placements, paths, and the complete coarse DOWN layout frame.