Interchange Lane Reorder

Gallery / Branching and Multipath

Two lanes share one step while a third lane is declared between them. Auto-layout reorders the interleaving lane to an outer track so the two members become adjacent and infer a clean interchange, instead of abstaining (issue #779).

Mermaid source

%%metro title: Interchange lane reorder
%%metro style: dark
%%metro line: top | Top | #d62728
%%metro line: mid | Mid | #2db572
%%metro line: bot | Bot | #f5c542

graph LR
    subgraph s [Parallel lanes]
        top_in[ ]
        mid_in[ ]
        bot_in[ ]
        hub[Shared step]
        mid_step[Mid step]
        top_out[ ]
        mid_out[ ]
        bot_out[ ]
        top_in -->|top| hub
        bot_in -->|bot| hub
        mid_in -->|mid| mid_step
        hub -->|top| top_out
        hub -->|bot| bot_out
        mid_step -->|mid| mid_out
    end

CLI command

nf-metro render examples/topologies/interchange_lane_reorder.mmd -o interchange_lane_reorder.svg

Rendered map