/// <summary>
/// Expands the maze size by a factor and then connects all new rooms that appeared from the expansion.
/// </summary>
private IGrid <GridPoint2, RectFEV.MazeType> ExpandMaze(IGrid <GridPoint2, RectFEV.MazeType> maze, int factor)
{
int r1 = (maze.Bounds.Size.X + 1) / 2 * factor;
var one = -GridPoint2.One;
var newShape = ImplicitShape.Func <GridPoint2>(p =>
maze.Contains((p - one).FloorDiv(factor * GridPoint2.One)) &&
maze[(p - one).FloorDiv(factor * GridPoint2.One)] == RectFEV.MazeType.Open).ToExplicit(
new GridRect(new GridPoint2(1 - r1, 1 - r1), new GridPoint2(2 * r1 - 1, 2 * r1 - 1)));
var maze2 = RectFEV.GenerateMaze(newShape, symmetry);
var maze3 = maze2.Bounds.ToGrid <RectFEV.MazeType>();
foreach (var point in maze3.Points)
{
maze3[point] = maze2.Contains(point) && maze2[point] == RectFEV.MazeType.Open
? RectFEV.MazeType.Open
: RectFEV.MazeType.Close;
}
RectFEV.ContinueMaze(maze3, symmetry);
return(maze3);
}
/// <summary>
/// A Product maze creates small mazes and disposition them on the points of the repeat grid.
/// </summary>
private IGrid <GridPoint2, RectFEV.MazeType> ProductGrid()
{
var repeatShape = ImplicitShape.Square(GridPoint2.Zero, repeatGridRadius).ToExplicit(new GridRect(new GridPoint2(1 - repeatGridRadius, 1 - repeatGridRadius), new GridPoint2(2 * repeatGridRadius - 1, 2 * repeatGridRadius - 1)));
var smallGridShape = ImplicitShape.Square(GridPoint2.Zero, smallGridRadius).ToExplicit(new GridRect(new GridPoint2(1 - smallGridRadius, 1 - smallGridRadius), new GridPoint2(2 * smallGridRadius - 1, 2 * smallGridRadius - 1)));
var bigMaze = Grid.CloneStructure <GridPoint2, RectFEV.MazeType>(p => RectFEV.MazeType.Close);
foreach (var iter in repeatShape.Points)
{
var maze = RectFEV.GenerateMaze(smallGridShape, iter.GetColor(2, 1, 1) == 0 ? RectFEV.Symmetry.Reflection : RectFEV.Symmetry.Rotation);
foreach (var point in maze.Points)
{
var newPoint = iter * new GridPoint2(2 * smallGridRadius - 2, 2 * smallGridRadius - 2) + point;
if (maze.Contains(point) && bigMaze.Contains(newPoint))
{
bigMaze[newPoint] = maze[point] == RectFEV.MazeType.Open ? RectFEV.MazeType.Open : RectFEV.MazeType.Close;
}
}
}
RectFEV.ContinueMaze(bigMaze, symmetry);
return(bigMaze);
}