private void OnPinClicked(TKCustomMapPin pin)
{
var firstPosition = Pins.First().Position;
var position = pin.Position;
// if the user tapped the first marker, we'll close the gap.
// and prevent them from adding more points.
_allowedToAddPoint = _allowedToAddPoint &&
Pins.Count > 1 &&
!(Math.Abs(position.Latitude - firstPosition.Latitude) <= 0 && Math.Abs(position.Longitude - firstPosition.Longitude) <= 0);
if (!_allowedToAddPoint)
{
var polygon = new TKPolygon
{
Color = Color.FromHex("#7f000000"),
StrokeColor = Color.Black,
StrokeWidth = 2
};
foreach (var line in Polylines)
{
polygon.Coordinates.AddRange(line.LineCoordinates);
}
Polylines.Clear();
Polygons.Clear();
Pins.Clear();
Polygons.Add(polygon);
}
}
/// <summary>
/// Gets the <see cref="GpioPin"/> with the specified Wiring Pi pin number.
/// </summary>
/// <value>
/// The <see cref="GpioPin"/>.
/// </value>
/// <param name="pinNumber">The pin number.</param>
/// <returns>A reference to the GPIO pin.</returns>
public GpioPin this[WiringPiPin pinNumber]
{
get
{
if (pinNumber == WiringPiPin.Unknown)
{
throw new InvalidOperationException("You can not get an unknown WiringPi pin.");
}
return(Pins.First(p => p.WiringPiPinNumber == pinNumber));
}
}