Draft Arc

Description
This tool draws an arc by picking four points: the center, the radius, the start angle and the end angle.



Usage

 * Picking a point on an empty area of the 3d view, or on an existing object.
 * Pressing CTRL will snap your point to availible snap locations.
 * Pressing SHIFT will constrain your new point in relation to the last one.
 * Enter numbers to manually insert a coordinate.
 * The newly created line will take the current linestyle.
 * Pressing ALT when choosing the end angle will switch you to counter-clockwise direction.
 * Pressing ESCAPE cancels the function.

Scripting
The created arc is a Part feature containing one edge with three vertices.