private List<FrameworkElement> RenderCell(MapCellState cell, Rect cellArea)
{
List<FrameworkElement> result = new List<FrameworkElement>();
if (cell == null) return result;
result.Add(RenderPlace(cell.Place, cellArea));
result.Add(RenderWall(cell.GetWall(MapDirection.South), cellArea));
result.Add(RenderWall(cell.GetWall(MapDirection.West), cellArea));
result.Add(RenderWall(cell.GetWall(MapDirection.North), cellArea));
result.Add(RenderWall(cell.GetWall(MapDirection.East), cellArea));
result.Add(RenderWallCorner(cell.GetWall(MapDirection.North), cell.GetWall(MapDirection.West), cellArea));
result.Add(RenderWallCorner(cell.GetWall(MapDirection.North), cell.GetWall(MapDirection.East), cellArea));
result.Add(RenderWallCorner(cell.GetWall(MapDirection.South), cell.GetWall(MapDirection.West), cellArea));
result.Add(RenderWallCorner(cell.GetWall(MapDirection.South), cell.GetWall(MapDirection.East), cellArea));
while (result.Remove(null));
return result;
}
