public Tube Create(double projectLength, double projectWeight, string type)
{
Tube t = null;
switch (type)
{
case "CastIron": t = new CastIronTube(); break;
case "Pvc": t = new PvcTube(); break;
case "Steel": t = new SteelTube(); break;
default: throw new ArgumentException("Not recognized tube type!");
}
t.ProjectLength = projectLength;
t.ProjectWeight = projectWeight;
t.RealLength = t.ProjectLength * (1 + ((_r.NextDouble() - 0.5) / 25));
t.RealWeight = t.ProjectWeight * (1 + ((_r.NextDouble() - 0.5) / 10));
return(t);
}
public void Visit(SteelTube tube)
{
tube.Color = "Blue";
}