/// <summary> /// This is just to try passing back an invalid memento. /// </summary> public void BadUnexecute() { Console.WriteLine("\nBad Undo!\n"); ConstraintSolver solver = ConstraintSolver.Instance(); // Restore bad state solver.SetMemento(_state); // Adjust constraints for reversed movement solver.Solve(); }
public void Unexecute() { Console.WriteLine("\nUndo!\n"); ConstraintSolver solver = ConstraintSolver.Instance(); // Reverse graphic movement _delta.X = -_delta.X; _delta.Y = -_delta.Y; _target.Move(_delta); // Restore state solver.SetMemento(_state); // Adjust constraints for reversed movement solver.Solve(); }