public void ChangeRoller(char to)
{
var oldrol = roller;
roller = new Roller(GetJoint(to));
CheckValidityWithBackUp(oldrol);
}
/// <summary>
/// Create a new truss object.
/// </summary>
public void Restart()
{
model = new Truss();
joints.Clear();
pin = null;
roller = null;
knownForces.Clear();
}
private void CheckValidityWithBackUp(Roller oldRollerJustInCase)
{
if (pin != null && roller != null && pin.Joint.X.Equals(roller.Joint.X))
{
roller = oldRollerJustInCase;
throw new Exception("F**k you, bad support alignment ...");
}
}