From Xojo Documentation
Adds an arc to the path.
|x||The x-coordinate of the center point of the arc.|
|y||The y-coordinate of the center point of the arc.|
|radius||The radius of the arc.|
|startAngle||The angle (in radians) that determines the starting point of the arc, measured from the x-axis.|
|endAngle||The angle (in radians) that determines the ending point of the arc, measured from the x-axis.|
|clockwise||A Boolean value that specifies whether or not to draw the arc in the clockwise direction.|
The ending point of the Arc becomes the start point for the next element added to the path. In particular, if you add two arcs in a row, there will be a line that connects the ending point of the first arc to the starting point of the second arc. If you do not want this behavior, set the new starting point manually using MoveToPoint.
Draw an arc that is 1/4 of a circle: