Add arrow heads to edges

[tomwilkie]

Feedback from Darren at Rancher.

[davkal]

Arrow heads will only look nice, if they end at the outer border of a node. Otherwise the inner node dot will be crowded. For proper arrow offset to end at the border, we need to calculate those endpoints. It's easy for circles, but more tricky for rects with rounded corners.

[pidster]

If edges are directional it makes sense to visualise this for the user to see.
If arrowheads in contact with the node are hard, a V just before the end might work.
Would be worth trying it out.

[tomwilkie]

Edges are directional.

On Wednesday, 2 March 2016, Pid [email protected] wrote:

If edges are directional it makes sense to visualise this for the user to
see.
If arrowheads in contact with the node are hard, a V just before the end
might work.
Would be worth trying it out.

—
Reply to this email directly or view it on GitHub
#872 (comment).

[jml]

I didn't realize that "down" meant "connects to". Adding arrowheads (or some sort of symbol for indicating direction) could be quite helpful.

[rade]

Arrow heads will only look nice, if they end at the outer border of a node.

As a (temporary) alternative we could render arrow heads at the mid-point of an edge.

[rade]

This can be closed, right?