[PATCH] Create circle action

[Henry Loenwind]

Some people asked about an action to create a circle. Seems someone even was willing to pay a programmer. Nonsense, here it is for free:

• New file CreateCircleAction.java

• Diff for MainMenu.java to include it

• No icon, I just copied images/aligncircle.png to images/createcircle.png locally

How it works:

(a) Select exactly 3 nodes. The tool will then create a new way that will include the selected nodes and a number of new nodes, aligned in a circle.

(b) Select a way that has exactly 3 nodes. The tool will then create a number of new nodes (aligned in a circle) and put them into the existing way. The nodes in the way will be re-ordered so you'll get a circle, not a scribble ;)

(c) Default number of nodes to add is 8. So the circle will have 11 nodes (8 new at regular intervals and the 3 existing at their current positions). This can be changed by setting the configuration value "createcircle.nodecount" to a number between 1 and 100.

TODO:

• There is no adjustment for projection errors. However, the circles look good in Mercator projection---and that's what we usually want, isn't it?

• The "AlignInCircle" action has a different idea about the center of the circle. Seems to be because it just takes the average as center. I think(!) I'm right and it is wrong, but I'm not sure. Just don't use both on the same circle.

[Henry Loenwind]

the new action

[Henry Loenwind]

integration into the Tools menu

[framm]

Applied for r996. Code is technically incorrect as it will always create something that looks like a circle in the current projection, while in fact it should always create something that *is* a circle on the ground no matter what your projection... but then... who cares.