Eclipse Community Forums: Eclipse Layout Kernel

Home » Modeling » Eclipse Layout Kernel » Layout parts of a diagram(Only sub-parts of a diagram should be modified, while respecting the existing elements that are not included in the layouting.)

Show: Today's Messages :: Show Polls :: Message Navigator

Layout parts of a diagram [message #1765891]

Wed, 14 June 2017 11:31

Sebastian Mense

Messages: 1
Registered: June 2017

Junior Member

It's my goal to, like stated in the description, layout only parts of a diagram.

I am aware that I could technically specify the layouting elements I pass
as it's own diagram and apply the results accordingly into my diagram.
That however would limit the space where elements could be placed to
a rectangular shape and would also not include my further requirement,
where I want to be able to layout connectors only.

I didn't find any way of getting this to work so I wanted to ask before
writing own algorithms. If this is not possible how close can I get to this
solution using ELK?

Best Regards
Sebastian M.

Report message to a moderator

Re: Layout parts of a diagram [message #1766087 is a reply to message #1765891]

Thu, 15 June 2017 14:12

Christoph Daniel Schulze

Messages: 98
Registered: September 2015

Member

Hi Sebastian!

Laying out only parts of a diagram such that they do not overlap other parts is currently not supported. Your proposed solution would be the way to go there. Regarding connector routing, we are currently working on an algorithm that does exactly that. If everything goes well, my guess is that it will be available in about three months.

Cheers,
Christoph Daniel

Report message to a moderator

Re: Layout parts of a diagram [message #1771608 is a reply to message #1766087]

Mon, 28 August 2017 15:15

Benoit VIAUD

Messages: 9
Registered: July 2014

Junior Member

Hello,

I have the exact same need as Sebastian, including the ability to compute a layout for ports and edges only, while nodes would be fixed.
But the first step would be to fix the position of nodes, in the ELK layered algo.

You are mentionning that Quote:

my guess is that it will be available in about three months

.
What did you have in mind as a solution? How will we know that it is available?
Does everything goes well, as you were expecting? Otherwise, do you have a new target?

Best regards,

Benoit

[Updated on: Tue, 29 August 2017 07:42]

Report message to a moderator

Re: Layout parts of a diagram [message #1771610 is a reply to message #1766087]

Mon, 28 August 2017 15:29

Benoit VIAUD

Messages: 9
Registered: July 2014

Junior Member

PS: I was somehow hopping that the undocumented "Partitioning" feature could do something as expected, but my hope was only based on the naming (Layout partition). I guess that I was too optimistic. So by the way, what is "Layout partitioning"?

[Updated on: Tue, 29 August 2017 07:42]

Report message to a moderator

Re: Layout parts of a diagram [message #1772173 is a reply to message #1771608]

Wed, 06 September 2017 10:23

Christoph Daniel Schulze

Messages: 98
Registered: September 2015

Member

Hi Benoit,

sorry for the delayed reply - I just came back from vacation. ;)

Benoit VIAUD wrote on Mon, 28 August 2017 15:15

You are mentionning that Quote:
my guess is that it will be available in about three months
.
What did you have in mind as a solution? How will we know that it is available?
Does everything goes well, as you were expecting? Otherwise, do you have a new target?

The idea was to develop a separate layout algorithm specialized in edge routing, completely separate from ELK Layered, hopefully as part of the next release (which we will start planning tomorrow, as it happens).

I will leave details as to how well it went to Ulf, who has a better overview there.

Benoit VIAUD wrote on Mon, 28 August 2017 15:29

So by the way, what is "Layout partitioning"?

This is a way to influence how nodes are placed along the horizontal axis. ELK Layered distributes nodes over vertical columns. Partitioning allows us to restrict that distribution such that nodes in the same partition are put into consecutive columns. It's basically like grouping columns in a table and defining which group a node should be part of, while not caring about which exact column inside that group it will end up in.

Report message to a moderator

Re: Layout parts of a diagram [message #1774326 is a reply to message #1772173]

Thu, 12 October 2017 20:55

Philip Alldredge

Messages: 20
Registered: February 2013

Junior Member

Being able to layout parts of a diagram would be very useful.

I am interested in the edge routing algorithm as well. How is that looking? Is that something that will be available in a release in the near-term?

Report message to a moderator

Re: Layout parts of a diagram [message #1774401 is a reply to message #1774326]

Fri, 13 October 2017 17:04

Ulf Rueegg

Messages: 26
Registered: February 2010

Junior Member

Unfortunately the standalone edge routing isn't stable enough at this point and won't make it into a near-term release. Nevertheless, it stays on our agenda.

Report message to a moderator