Adds an arc of a circle to the current path, using a radius and tangent points.
Original signature is 'void CGContextAddArcToPoint ( CGContextRef c, CGFloat x1, CGFloat y1, CGFloat x2, CGFloat y2, CGFloat radius );'
Available in Mac OS X v10.0 and later.


- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)