[Initial PATCH] Improve "align nodes in line"

[olejorgenb]

This patch adds another case to "align nodes in line"

• If only one node is selected, it's aligned according to its neighbors. (a way can be selected to chose between multiple parents)

This is the most common way I use the alignment tool. Not having to explicitly select all nodes would save lots of time.

Works, but it could handle a couple more cases with some work.

Could this be accepted, or is this tool too old to touch?

[bastiK]

I like it.

@team: any objections?

[bastiK]

The following extension would be very useful for me:

 ____
|    |____
|    |    |
|____|    |
     |____|

This are 2 buildings and I like to use the "L" tool on one of the nodes that is part of both ways. With the first way it forms an angle of 90 degrees and with the second an angle of approximately 180 degrees. The tool would work a bit fuzzy: It should straighten the 180 degrees angle and basically ignore the way with 90 degrees angle.

[stoecker]

In [4558/josm]:

fix #6966 - patch by olejorgenb - allow to align only one selected node

[Zverikk]

align way nodes in utilsplugin2 already does that, along with some other usual cases.