func drawNiddles(ctx *canvas.CanvasRenderingContext2D, r int) {
hourR := float64(r - 30)
minuteR := float64(r - 20)
secondR := float64(r - 13)
now := time.Now()
hourAngle := (1 - float64(now.Hour()%12)/12) * math.Pi * 2
minuteAngle := (1 - float64(now.Minute())/60) * math.Pi * 2
secondAngle := (1 - float64(now.Second())/60) * math.Pi * 2
rotateAngle := math.Pi
ctx.Save()
ctx.Rotate(int(-1 * rotateAngle))
ctx.StrokeStyle = "black"
ctx.LineWidth = 4
ctx.MoveTo(0, 0)
ctx.LineTo(int(hourR*math.Sin(hourAngle)), int(hourR*math.Cos(hourAngle)))
ctx.Stroke()
ctx.LineWidth = 2
ctx.MoveTo(0, 0)
ctx.LineTo(int(minuteR*math.Sin(minuteAngle)), int(minuteR*math.Cos(minuteAngle)))
ctx.Stroke()
ctx.LineWidth = 1
ctx.MoveTo(0, 0)
ctx.LineTo(int(secondR*math.Sin(secondAngle)), int(secondR*math.Cos(secondAngle)))
ctx.Stroke()
ctx.Restore()
}
