public Wall(Cell[] cells, Orientation orientation)
{
if (cells == null)
{
throw new ArgumentNullException(nameof(cells));
}
if (cells.Length != 4)
{
throw new ArgumentException("There must be exactly 4 cells in the array");
}
Cells = new Cell[4];
Array.Copy(cells, Cells, 4);
Array.Sort(Cells);
Orientation = orientation;
if (Orientation == Orientation.Vertical)
{
SegmentA = new WallSegment(Cells[0], Cells[2]);
SegmentB = new WallSegment(Cells[1], Cells[3]);
}
else
{
SegmentA = new WallSegment(Cells[0], Cells[1]);
SegmentB = new WallSegment(Cells[2], Cells[3]);
}
}
/// <summary>
/// Creates Wall from short string description
/// </summary>
///
/// <param name="wallDescription">
/// 3-character description in the format "xyO",
/// where 'x' and 'y' - coordinates of the lower left cell out of 4,
/// and 'O' is a wall orientation (can be either 'v' or 'h')
/// </param>
public Wall(String wallDescription)
{
if (!IsCorrectWallDescription(wallDescription))
{
throw new ArgumentException("Incorrect wall description");
}
var x = int.Parse(wallDescription.Substring(0, 1));
var y = int.Parse(wallDescription.Substring(1, 1));
var dx = new[] { 0, 0, 1, 1 };
var dy = new[] { 0, 1, 0, 1 };
var cellsList = new List <Cell>();
for (var i = 0; i < 4; ++i)
{
cellsList.Add(new Cell(x + dx[i], y + dy[i]));
}
Cells = cellsList.ToArray();
switch (wallDescription[2])
{
case 'v':
Orientation = Orientation.Vertical;
break;
case 'h':
Orientation = Orientation.Horizontal;
break;
default:
Orientation = Orientation.Unknown;
break;
}
if (Orientation == Orientation.Vertical)
{
SegmentA = new WallSegment(Cells[0], Cells[2]);
SegmentB = new WallSegment(Cells[1], Cells[3]);
}
else
{
SegmentA = new WallSegment(Cells[0], Cells[1]);
SegmentB = new WallSegment(Cells[2], Cells[3]);
}
}
public Wall(WallSegment segmentA, WallSegment segmentB)
{
if (segmentA == null)
{
throw new ArgumentNullException(nameof(segmentA));
}
if (segmentB == null)
{
throw new ArgumentNullException(nameof(segmentB));
}
if (!WallSegment.AreAdjacent(segmentA, segmentB))
{
throw new ArgumentException("Wall segments are not adjacent");
}
Orientation = segmentA.Orientation;
if (Orientation == Orientation.Vertical)
{
if (segmentA.Cell1.Y > segmentB.Cell1.Y)
{
Helper.Swap(ref segmentA, ref segmentB);
}
}
else
{
if (segmentA.Cell1.X > segmentB.Cell1.X)
{
Helper.Swap(ref segmentA, ref segmentB);
}
}
SegmentA = segmentA;
SegmentB = segmentB;
Cells = new[]
{
segmentA.Cell1,
segmentA.Cell2,
segmentB.Cell1,
segmentB.Cell2
};
Array.Sort(Cells);
}