/// <summary>
/// Constructs a cell with the same hash code as the given parameter.
/// </summary>
public Cell(int i, GeodesicGrid grid)
{
if (i < 0 || i >= grid.Count)
{
throw new ArgumentOutOfRangeException();
}
if (i == 0)
{
this = new Cell(0, -1, 0, grid);
}
else if (i == grid.Count - 1)
{
this = new Cell(0, 2 * grid.n - 1, grid.n, grid);
}
else
{
i -= 1;
var x = i / (grid.n * grid.n * 2);
i -= grid.n * grid.n * 2 * x;
var y = i / grid.n;
var z = i - grid.n * y;
this = new Cell(x, y, z, grid);
}
}
public Cell(int x, int y, int z, GeodesicGrid grid)
: this()
{
this.grid = grid;
int n = grid.n;
if (z < -1 || y < -1 || z > n || y > 2 * n)
{
throw new ArgumentOutOfRangeException();
}
if (y == -1)
{
if (z == 0)
{
x = 0;
}
else if (z == -1)
{
throw new ArgumentOutOfRangeException();
}
else
{
x = x - 1;
y = z - 1;
z = 0;
}
}
else if (z == -1)
{
x = x + 1;
if (y < n)
{
z = y;
y = 0;
}
else
{
y = y - n;
z = n - 1;
}
}
else if (y == 2 * n)
{
if (z == n)
{
throw new ArgumentOutOfRangeException();
}
x = x + 1;
y = n + z;
z = n - 1;
}
else if (z == n)
{
if (y < n)
{
x = x - 1;
y = y + n;
z = 0;
}
else if (y < 2 * n - 1)
{
x = x - 1;
z = y - n + 1;
y = 2 * n - 1;
}
else
{
x = 4;
}
}
x %= 5;
if (x < 0)
{
x += 5;
}
X = x;
Y = y;
Z = z;
}
public bool Equals(GeodesicGrid other)
{
return(n == other.n);
}