/// <summary>
/// Rotate about the x-axis. This involves leaving x values the same, but xOR'ing the rest.
/// </summary>
internal virtual HilbertCurve3D RotateAboutX()
{
int[] newNpoints = new int[Length()];
for (int i = 0; i < Length(); i++)
{
newNpoints[i] = BinaryCoordinateRotationUtils3D.RotateYZ(NpointValues[i]);
}
return(new HilbertCurve3D(newNpoints));
}
/// <summary>
/// Rotate about the neg-x diagonal (the 100->011 diagonal). This is similar to the
/// normal diagonal rotation, but with x-switched, so we XOR the x value before and after
/// the rotation, and rotate in the opposite direction to specified.
/// </summary>
internal virtual HilbertCurve3D RotateOneThirdDiagonalNeg(bool direction)
{
int[] newNpoints = new int[Length()];
for (int i = 0; i < Length(); i++)
{
if (direction)
{
newNpoints[i] = BinaryCoordinateRotationUtils3D.XXOR(BinaryCoordinateRotationUtils3D.RotateNPointLeft(BinaryCoordinateRotationUtils3D.XXOR(NpointValues[i])));
}
else
{
newNpoints[i] = BinaryCoordinateRotationUtils3D.XXOR(BinaryCoordinateRotationUtils3D.RotateNPointRight(BinaryCoordinateRotationUtils3D.XXOR(NpointValues[i])));
}
}
return(new HilbertCurve3D(newNpoints));
}
