public Cube(string input)
{
using (StringReader sr = new StringReader(input))
{
string line;
int z = 0;
int y = 0;
while ((line = sr.ReadLine()) != null)
{
for (int x = 0; x < line.Length; x++)
{
char c = line[x];
if (c == '.')
{
}
if (c == '#')
{
Point4d p = new Point4d(x, y, z, 0);
Active.Add(p);
}
}
y++;
}
}
}
private List <Point> GetNeighbours4d(Point4d p)
{
List <Point> ret = new List <Point>();
for (int z = -1; z < 2; z++)
{
for (int y = -1; y < 2; y++)
{
for (int x = -1; x < 2; x++)
{
for (int w = -1; w < 2; w++)
{
if (z != 0 || y != 0 || x != 0 || w != 0)
{
ret.Add(new Point4d(p.X + x, p.Y + y, p.Z + z, p.W + w));
}
}
}
}
}
return(ret);
}