public int GetRoutes()
{
var blks = GetBlocks();
foreach (var b0 in blks)
{
if (b0 == null)
{
continue;
}
_branches.Clear();
_currentWay = "";
GetAllPath(b0);
}
foreach (var p in _paths)
{
Trace.WriteLine("P: " + p);
}
foreach (var p in _paths)
{
if (string.IsNullOrEmpty(p))
{
continue;
}
WayPoints wps = new WayPoints(this, p);
if (Routes == null)
{
Routes = new List <WayPoints>();
}
Routes.Add(wps);
}
if (Routes == null)
{
return(0);
}
return(Routes.Count);
}
private bool CheckSwitchAndTurn(MapItem currentItem, MapItem neighbour)
{
if (currentItem == null)
{
return(false);
}
if (!currentItem.IsSwitch)
{
return(false);
}
if (neighbour == null)
{
return(false);
}
var previousWay = new WayPoints(this, _currentWay);
int lastIndex = previousWay.Count - 1;
var fromWp = previousWay[lastIndex - 1];
var fromItem = Get(fromWp.X0, fromWp.Y1);
var nb = neighbour;
var xdelta = nb.X0 - fromItem.X0;
var ydelta = nb.Y0 - fromItem.Y0;
bool hasTurn = Math.Abs(xdelta) == 1 || Math.Abs(ydelta) == 1;
if (hasTurn)
{
_currentWay = _currentWay.Trim();
int n = _currentWay.LastIndexOf("->", StringComparison.OrdinalIgnoreCase);
_currentWay = _currentWay.Substring(0, n).Trim();
_currentWay += ">->";
}
return(hasTurn);
}