## aidl/boat/boat7

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###
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    from AIDL import *

    def boat(
            hull_length: float = 15 * inches,
            deck_width: float = 5 * inches,
            hull_height: float = 4 * inches,
            cabin_height: float = 2 * inches,
            cabin_length: float = 3 * inches,
            mast_height: float = 10 * inches,
            mast_width: float = 0.5 * inches
    ):
        """
        Model a simple boat with a hull, deck, cabin, and mast.
        """

        # Define the main Boat structure
        boat = Solid()

        # Define the Hull Solid
        hull = Solid()
        boat.hull = hull

        # Define the Deck Solid
        deck = Solid()
        boat.deck = deck

        # Define the Cabin Solid
        cabin = Solid()
        boat.cabin = cabin

        # Define the Mast Solid
        mast = Solid()
        boat.mast = mast

        ### Define Geometry ###

        # Hull geometry (semi-circle with rectangle below)
        hull.body_bottom = Rectangle((0, -hull_height / 2), hull_length, hull_height / 2)
        hull.arc_top = Arc((0, 0), (-hull_length / 2, 0), (hull_length / 2, 0))

        # Deck geometry (rectangle on top of hull)
        deck.body = Rectangle((0, hull_height / 2), hull_length, deck_width)

        # Cabin geometry (rectangle on deck)
        cabin.body = Rectangle((0, deck_width + cabin_height / 2), cabin_length, cabin_height)

        # Mast geometry (rectangle extending vertically from deck)
        mast.body = Rectangle((0, hull_height / 2 + deck_width + mast_height / 2), mast_width, mast_height)

        ### Add Constraints ###

        # Horizontally align the hull, deck, cabin, and mast
        boat.AddConstraint(hull.bb.horizontal_center == deck.bb.horizontal_center)
        boat.AddConstraint(hull.bb.horizontal_center == cabin.bb.horizontal_center)
        boat.AddConstraint(hull.bb.horizontal_center == mast.bb.horizontal_center)

        # Vertically align deck on top of hull
        boat.AddConstraint(deck.bb.bottom == hull.bb.top)

        # Vertically align cabin on top of deck
        boat.AddConstraint(cabin.bb.bottom == deck.bb.top)

        # Vertically align mast on top of deck
        boat.AddConstraint(mast.bb.bottom == deck.bb.top)

        return boat

    with AIDL_2D:
        model = boat()
    print(model.Solve())
    model.Render()
                    Please write an AIDL program to generate a boat

    Certainly! Let's break down the task to create a 2D cutout model of a boat. We will start by defining the requirements and then proceed step-by-step to generate the structures and their hierarchical relationships, constraints, and geometry.

    ### Step 1: Define Requirements and Structures

    Let's define a simple boat model with the following components:
    1. **Hull:** The main body of the boat.
    2. **Deck:** A rectangular area on top.
    3. **Cabin:** A small structure on the deck.
    4. **Mast:** A tall vertical structure attached to the deck.

    Given these components, we will treat Hull, Deck, Cabin, and Mast as separate structures within the main Boat structure.

    ### Step 2: Define Constraints

    For the hull, it's a good idea to use a symmetric shape like a semi-circle with a rectangular bottom part. The deck will sit on the top of the hull. The cabin will be a rectangle situated on the deck, and the mast will be a line extending vertically from the deck.

    ### Step 3: Define and Add Geometry

    We will outline the geometry for each of these structures.

    ### Implementation

    Let's start coding the AIDL program for the boat:

    ```python
    from AIDL import *

    def boat(
            hull_length: float = 15 * inches,
            deck_width: float = 5 * inches,
            hull_height: float = 4 * inches,
            cabin_height: float = 2 * inches,
            cabin_length: float = 3 * inches,
            mast_height: float = 10 * inches,
            mast_width: float = 0.5 * inches
    ):
        """
        Model a simple boat with a hull, deck, cabin, and mast.
        """

        # Define the main Boat structure
        boat = Solid()

        # Define the Hull Solid
        hull = Solid()
        boat.hull = hull

        # Define the Deck Solid
        deck = Solid()
        boat.deck = deck

        # Define the Cabin Solid
        cabin = Solid()
        boat.cabin = cabin

        # Define the Mast Solid
        mast = Solid()
        boat.mast = mast

        ### Define Geometry ###

        # Hull geometry (semi-circle with rectangle below)
        hull.body_bottom = Rectangle((0, -hull_height / 2), hull_length, hull_height / 2)
        hull.arc_top = Arc((0, 0), (-hull_length / 2, 0), (hull_length / 2, 0))

        # Deck geometry (rectangle on top of hull)
        deck.body = Rectangle((0, hull_height / 2), hull_length, deck_width)

        # Cabin geometry (rectangle on deck)
        cabin.body = Rectangle((0, deck_width + cabin_height / 2), cabin_length, cabin_height)

        # Mast geometry (rectangle extending vertically from deck)
        mast.body = Rectangle((0, hull_height / 2 + deck_width + mast_height / 2), mast_width, mast_height)

        ### Add Constraints ###

        # Horizontally align the hull, deck, cabin, and mast
        boat.AddConstraint(hull.bb.horizontal_center == deck.bb.horizontal_center)
        boat.AddConstraint(hull.bb.horizontal_center == cabin.bb.horizontal_center)
        boat.AddConstraint(hull.bb.horizontal_center == mast.bb.horizontal_center)

        # Vertically align deck on top of hull
        boat.AddConstraint(deck.bb.bottom == hull.bb.top)

        # Vertically align cabin on top of deck
        boat.AddConstraint(cabin.bb.bottom == deck.bb.top)

        # Vertically align mast on top of deck
        boat.AddConstraint(mast.bb.bottom == deck.bb.top)

        return boat

    with AIDL_2D:
        model = boat()
    print(model.Solve())
    model.Render()
    ```

    This example creates a simple 2D model of a boat with detailed and intuitive constraints for each component. If you have specific requirements or need to add more details, just let me know, and we can further refine this model!