public void Awake()
{
if (grid == null)
{
grid = GetComponent<Grid>();
}
}
static PointLatLng findClosestPoint(PointLatLng start, Grid.linelatlng line)
{
List<PointLatLng> list = new List<PointLatLng>();
list.Add(line.p1);
list.Add(line.p2);
PointLatLng closest = findClosestPoint(start, list);
return closest;
}