private bool IsCorner(Coord pos, MapArea area)
{
Coord left = pos + Direction.LEFT;
Coord right = pos + Direction.RIGHT;
Coord up = pos + Direction.UP;
Coord down = pos + Direction.DOWN;
return(!((area.Contains(left) && area.Contains(right)) || (area.Contains(up) && area.Contains(down))));
}
private Direction GetDirection(Coord pos, MapArea area)
{
Coord left = pos + Direction.LEFT;
Coord right = pos + Direction.RIGHT;
Coord up = pos + Direction.UP;
Coord down = pos + Direction.DOWN;
if (area.Contains(up) && area.Contains(down))
{
return(area.Contains(right) ? Direction.LEFT : Direction.RIGHT);
}
else
{
return(area.Contains(up) ? Direction.DOWN : Direction.UP);
}
}
public bool MapPoint(Point mappingPoint)
{
bool result = false;
if (MapArea.Contains(mappingPoint))
{
this.Points.Add(mappingPoint);
result = true;
}
return(result);
}
public static IEnumerable <Coord> Perimeter(this MapArea area)
{
foreach (Coord pos in area.Positions)
{
foreach (Coord neighbor in AdjacencyRule.EIGHT_WAY.Neighbors(pos))
{
if (!area.Contains(neighbor))
{
yield return(pos);
break;
}
}
}
}