<object SweepDirection="SweepDirection" .../>
value = object.SweepDirection
object.SweepDirection = value
A value that specifies the direction in which the arc is drawn.
This property is read/write. The default value is Counterclockwise.
For an ArcSegment with a given Size, RotationAngle, start point, and end Point, four different arcs are possible. Specifying the IsLargeArc property reduces the number of possible arcs to two: an arc drawn from the start point to the end Point in a Clockwise direction and an arc drawn from the start point to the end point in a Counterclockwise direction.
The following illustrations shows two elliptical arcs that are identical except for their SweepDirection settings.
ArcSegments with Clockwise SweepDirection
ArcSegments with CounterClockwise SweepDirection