#import "@preview/fletcher:0.6.0" as fletcher: diagram, node, edge

#let bent-edge(from, to, ..args) = {
let midpoint = (from, 50%, to)
let vertices = (
from,
(from, "|-", midpoint),
(midpoint, "-|", to),
to,
)
edge(..vertices, "-|>", ..args)
}

#diagram(
node-stroke: luma(80%),
edge-corner-radius: none,
spacing: (10pt, 20pt),

// Nodes
node((1.5,0), [*Entrate\ pubblicitarie*], name: <a>),
node((0.5,1), [*Numero di\ impression*], name: <b>),
node((2.5,1), [*Guadagno medio\ per impression*], name: <c>),

node((0,2), [*Traffico\ sul sito*], name: <d>),
node((1,2), [*Impression/\ visitatori*], name: <e>),

node((2,2), [*Modalità\ di vendita*], name: <f>),
node((3,2), [*Tipo di\ posizionamento*], name: <g>),

// Edges
bent-edge(<a>, <b>),
bent-edge(<a>, <c>),
bent-edge(<b>, <d>),
bent-edge(<b>, <e>),
bent-edge(<c>, <f>),
bent-edge(<c>, <g>),
)