public Matrix2D <char> GetTransformedMatrix()
{
bool rotate, hflip, vflip;
(rotate, hflip, vflip) = DecodeTransform(CurrentOrientation);
List <string> lines = new List <string>();
for (int y = 0; y < (rotate ? Width : Height); y++)
{
lines.Add(new string(GetTransformedLine(y, true)));
}
return(CharMatrix.Build(lines));
}
static void Main(string[] args)
{
int count1 = 0;
int iter1 = 0;
int count2 = 0;
int iter2 = 0;
Performance.TimeRun("part1 + 2 (with IO)", () =>
{
var input = TextFile.ReadStringList("input.txt");
var matrix = CharMatrix.Build(input);
var original = matrix.Clone();
(count1, iter1) = SimulateWithAdjecency(matrix);
(count2, iter2) = SimulateWithAdjecency(original, adjacencyFunc: FindClosestSeats, crowdedThreshold: 5);
}, 10, 10);
Console.WriteLine($"Part1: {count1} seats end up occupied ({iter1} iterations)");
Console.WriteLine($"Part2: {count2} seats end up occupied ({iter2} iterations)");
}
static (int, Matrix2D <char>) Part2(Tile[] tiledPicture, int dim)
{
var chart = CombineTiles(tiledPicture, dim);
var seaMonsterLines = new List <string>()
{
" # ",
"# ## ## ###",
" # # # # # # ",
};
var seaMonster = CharMatrix.Build(seaMonsterLines);
bool found = false;
Matrix2D <char> transformedChart = null;
for (int orientation = 0; orientation < 8; orientation++)
{
chart.CurrentOrientation = orientation;
transformedChart = chart.GetTransformedMatrix();
for (int y = 0; y < transformedChart.Height - seaMonster.Height; y++)
{
for (int x = 0; x < transformedChart.Width - seaMonster.Width; x++)
{
if (HasAllPixels(transformedChart, seaMonster, x, y))
{
found = true;
StampValue(transformedChart, seaMonster, x, y, 'O');
}
}
}
if (found)
{
break;
}
}
if (!found)
{
throw new ArgumentException("No sea monsters in image!");
}
return(transformedChart.Array.Count(c => c == '#'), transformedChart);
}
public Tile(int tileNo, List <string> lines, bool calculateEdges = true)
{
TileNo = tileNo;
matrix = CharMatrix.Build(lines);
Width = matrix.Width;
Height = matrix.Height;
if (calculateEdges)
{
//cache edges for all orientations:
for (int i = 0; i < 8; i++)
{
bool rotate, hflip, vflip;
(rotate, hflip, vflip) = DecodeTransform(i);
int[] edges = new int[4];
for (int e = 0; e < 4; e++)
{
Edge edge = (Edge)e;
edges[e] = ToInt(GetTransformedEdge(edge, rotate, hflip, vflip));
}
orientedEdges[i] = edges;
}
}
}