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= UtilsPlugin2 > Circle arc =
[[Image(osm:source:applications/editors/josm/plugins/utilsplugin2/images/circlearc.png,middle)]] ''Keyboard shortcut:'' **{{{Shift+C}}}**

**Simplifies drawing of circle arcs.**

Depending on the selected [Concepts/Object objects], circle arc produces different results:

1. **Three nodes** selected:[[BR]][[BR]]
 [[Image(circle_arc_3nodes.png)]]
 [[Image(circle_arc_3nodes_arc.png)]][[BR]][[BR]]
 A new way forming the arc is created following the order of the nodes' selection.[[BR]][[BR]]
1. **One way** selected:[[BR]][[BR]]
 [[Image(circle_arc_way.4.png)]]
 [[Image(circle_arc_way_arc.png)]][[BR]][[BR]]
 The arc is "fused" into the selected way between its' last three nodes using these three nodes to specify the arc.[[BR]][[BR]]
1. **One way and three of its' nodes** selected:[[BR]][[BR]]
 [[Image(circle_arc_way_3nodes.png,400)]]
 [[Image(circle_arc_way_3nodes_arc.png,400)]][[BR]][[BR]]
 The arc is "fused" into the selected way between the three selected nodes using them to specifiy the arc.

**Notes**:
* If multiple ways share the nodes under 2. or 3., those ways are modified, too.
* Currently the middle node is moved, proportionally distributing the nodes in the arc.

== Angle setting ==
The maximum angle between two points in the arc (ie. the "resolution") can be set in the [Help/Preferences/Advanced advanced preferences] with the key:
{{{
curves.circlearc.angle-separation
}}}
Default value is 20.

== See also ==
* [[Image(source:trunk/images/aligncircle.png,20,middle)]] [Action/CreateCircle Create Circle]
* [[Image(source:trunk/images/aligncircle.png,20,middle)]] [Action/AlignInCircle Align Nodes in Circle]

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