import cadquery as Cq
from dataclasses import dataclass

@dataclass(frozen=True)
class Parameters:

    """
    Thickness of the exoskeleton panel in millimetres
    """
    panel_thickness: float = 25.4 / 16

    # Wing root properties
    """
    Radius of the mounting mechanism of the wing root. This is constrained by
    the size of the harness.
    """
    root_radius: float = 60

    def wing_root(self,
                  side_width=30,
                  side_height=100):
        """
        Generate the wing root which contains a Hirth joint at its base and a
        rectangular opening on its side, with the necessary interfaces.
        """
        result = (
            Cq.Workplane("XY")
            .circle(self.root_radius)
            .transformed(offset=Cq.Vector(80, 0, 80),
                         rotate=Cq.Vector(0, 45, 0))
            .rect(side_width, side_height)
            .loft()
        )
        return result