layout: allow connecting to connections

[alixander]

Both nodes to connections and connections to connections

[alixander]

beautiful example of this:

[alixander]

syntax: a -> (b -> c)[0]? which would connect a to the midpoint of the first connection between b to c.

[bo-ku-ra]

can the order be specified and fixed?

a -> (b -> c)[0] #1
o.y -> (b -> c)[0] #2
p.x -> (b -> c)[0] #3
o.z -> (b -> c)[0] #4

[bo-ku-ra]

#423 (comment) is good.

a -> (b -> c)[0]: "" {
  target-arrowhead: "" {
    shape: circle
    style.filled: false
  }
}

i want to be able to use 'shape: diamond' and 'shape: cross'(#2028), too.

[MrPixelized]

An issue of mine was marked as a duplicate of this, and it might well be, but I would like to explicitly add that something like (a -> b) -> (c -> d) has uses for me! Rather than only connecting from nodes to edges, edges to edges as well.

[bo-ku-ra]

it should look like this

a -> b #[0]
a -> b #[1] <-- "(a ->b)[1]" 
a -> b #[2] 

(a ->b)[1]  ->  (c -> d)[0]

[alixander]

@MrPixelized Oh right, my bad didn't see the distinction. I've updated the post to clarify that it should also support connection to connection.

---

Dev note: the way to do this is probably to give the rendering engine a placeholder node on the connection, and then at the rendering stage, remove the placeholder node and trace the connection through it.

[roby2014]

Bump! I want this feature :D