Junction Fanout Convergence

Gallery / Merge & Convergence

Three lines converge into one joint-calling entry port: two bypass the intervening sections and climb risers into the port while the third joins flat from the adjacent column. The flat shallow feeder takes the port-near slot on top of the climbing pair so the bundle turns into the port concentrically, instead of the flat line weaving across the risers at the corner.

Mermaid source

%% Three lines converge into one LEFT entry port on a single-row grid: a and b
%% bypass the intervening sections and climb risers into the port, while c joins
%% flat from the adjacent column. The shallow feeder c must nest port-near on
%% top of the climbing pair so the bundle turns concentrically rather than
%% weaving c across the risers at the corner (#940).
%%metro title: Junction Fan-out Convergence
%%metro style: dark
%%metro line: a | Line A | #e63946
%%metro line: b | Line B | #f5c542
%%metro line: c | Line C | #9d4edd
%%metro grid: stepA | 0,0
%%metro grid: stepB | 1,0
%%metro grid: stepC | 2,0
%%metro grid: joint | 3,0

graph LR
    subgraph stepA [Caller A]
        sa[Call A]
    end
    subgraph stepB [Caller B]
        sb[Call B]
    end
    subgraph stepC [Caller C]
        sc[Call C]
    end
    subgraph joint [Joint Calling]
        merge[Merge]
        collect[Collect]
    end

    sa -->|a| merge
    sb -->|b| merge
    sc -->|c| merge
    merge -->|a,b,c| collect

CLI command

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

Rendered map