Drawing a circle in Swift using Bezier

import UIKit
import Darwin

var x,y: CGFloat
x = 10
y = 10

var point = CGPoint(x:100, y:100)
var radius: CGFloat = 50.0

let context = UIGraphicsGetCurrentContext()
var circle: UIBezierPath = UIBezierPath()
var start: CGPoint = CGPointMake(point.x + radius, point.y)

circle.moveToPoint(start)

// It was not working with i=0...
// Do not know why
for (var i=0.0001; i {
let test = CGFloat( i * M_PI/180)
let cosTest = cos(test)
let sinTest = sin(test)

x = (point.x + radius * cosTest)
y = (point.y + radius * sinTest)
circle.addLineToPoint(CGPointMake(x, y))
}

circle.closePath()

circle.stroke()