public static Step TakeStep(this Step step, Torsion twist)
{
var direction = step.Direction.Turn(twist);
var node = step.Node.Links[direction];
return(new Step(node, direction, twist, step));
}
public Step(Node node, Direction direction, Torsion twist, Step previous)
{
Node = node;
Previous = previous;
Direction = direction;
Twist = twist;
if (previous is not null)
{
Count = previous.Count + 1;
Torsion = previous.Torsion + twist;
}
else
{
Count = 0;
Torsion = Torsion.None;
}
}