C# Avalonia Planet System Upgrade

Enhance the planet system example in a C# application using Avalonia so that, in addition to planets (Planet class), the planet system elements include spaceships (a new SpaceShip class). You need to provide the following: Class design diagrams. Interaction diagrams. Implementation code. Unit tests. The enhancement must adhere to the Open/Closed Principle (OCP), meaning existing classes should be minimally modified, and new functionality should be added via new classes. Use Case: Planet System Simulation v2 Actor: User Description: During the simulation of the planet system, the user performs the following actions in any order and any number of times: The user initializes the planet system. The user commands the system to take a single simulation step. 2.1. The system updates the coordinates of the planet system elements. The user enables/disables automatic simulation. 3.1. During automatic simulation, the system periodically performs step 2.1. The user launches a new spaceship from a planet. Requirements Class SpaceShip: Must comply with the interface defined in the Point class. Must have a Tick() method that updates the spaceship's coordinates (x, y) by dx and dy. On initialization, the following parameters must be provided: Initial coordinates (x, y). Velocity (dx, dy). Simulation Module Updates: Update the [login to view URL] file to support adding spaceships to the simulation. In the test code, add an example of a SpaceShip object: [login to view URL](new SpaceShip(10, 0, 0.1, 0.1)); User Interface Enhancements: Add a button to the MainWindow class for launching a spaceship. Bind the button to the Launch method (described below). Spaceship Launch System: Create a method Launch(int planetId, double dx, double dy): Preconditions: The simulation contains a planet with the specified planetId. Postconditions: A spaceship is created with initial coordinates matching those of the planet with planetId and velocity (dx, dy). The spaceship is added to the current simulation. The spaceship is returned as the result of the operation. UI Changes: Add a Launch method to Avalonia UI code: public void Launch() { var ship = [login to view URL](3, 0.5, 0.5); AddToUI(ship); // Method for adding the spaceship to the visual representation. } Add a button in XAML to trigger the method: <Button Content="Launch" Command="{Binding LaunchCommand}" /> Recommended Steps: Design and document the solution (class and interaction diagrams). Implement and test the SpaceShip class. Update the simulation controller. Modify the user interface. Connect the UI button to the spaceship launch logic. Notes: Using Avalonia is mandatory. Use xUnit or any other testing framework for component testing. For visualizing spaceship movement, you can use a timer and Avalonia's UI update methods. If you have any questions regarding the implementation, feel free to contact the task author.