Fan Top Entry Over Tall Section

Gallery / Serpentine Layout

A fan-out junction with mixed-handler branches shares one inter-row traverse band. One branch is a TOP-entry drop into a section stacked below a different, shorter column; its horizontal trunk leg must clear the taller row-above section in the crossed column rather than skim its interior. The band is measured across the columns the fan's gap branches traverse so the run drops below that taller box (issue #1486, horizontal channel variant).

Mermaid source

%%metro title: Fan top-entry over a tall row-above section
%%metro line: l1 | Line 1 | #e6007e
%%metro grid: sec_a | 0,0
%%metro grid: sec_b | 1,0
%%metro grid: sec_f | 2,0
%%metro grid: sec_c | 0,1
%%metro grid: sec_d | 1,1
%%metro grid: sec_e | 3,1

graph LR
    subgraph sec_a [Section A]
        %%metro exit: right | l1
        a1[A1]
        a2[A2]
        a3[A3]
        a4[A4]
        a5[A5]
        a6[A6]
        a7[A7]
        a8[A8]
        a1 -->|l1| a2
        a2 -->|l1| a3
        a2 -->|l1| a4
        a2 -->|l1| a5
        a2 -->|l1| a6
        a2 -->|l1| a7
        a3 -->|l1| a8
        a4 -->|l1| a8
        a5 -->|l1| a8
        a6 -->|l1| a8
        a7 -->|l1| a8
    end
    subgraph sec_b [Section B]
        %%metro entry: left | l1
        %%metro exit: right | l1
        b1[B1]
        b1 -->|l1| file1
    end
    subgraph sec_f [Section F]
        %%metro entry: left | l1
        f1[F1]
        f1 -->|l1| file2
    end
    subgraph sec_c [Section C]
        %%metro entry: top | l1
        %%metro exit: right | l1
        c1[C1]
        c2[C2]
        c1 -->|l1| c2
    end
    subgraph sec_d [Section D]
        %%metro entry: left | l1
        d1[D1]
        d2[D2]
        d1 -->|l1| d2
    end
    subgraph sec_e [Section E]
        %%metro entry: top | l1
        e1[E1]
        e2[E2]
        e1 -->|l1| e2
    end
    a8 -->|l1| b1
    b1 -->|l1| c1
    b1 -->|l1| f1
    b1 -->|l1| e1
    c2 -->|l1| d1

CLI command

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

Rendered map