"""Auto-converted from z-screw-cover.scad — cadbuildr.foundation port."""
from cadbuildr.foundation import (
    Part, Sketch, Point,
    Square, Rectangle, Circle, RegularPolygon, RectangleRounded,
    Extrusion, Lathe, Hole,
    Cylinder, Box, Sphere, Cone,
    show,
)

class ZScrewCover(Part):
    def __init__(self):
        super().__init__()
        sketch = self._sketch = Sketch(self.xy())

        # Main body: cone from r=8 to r=4.6 over h=4 starting at z=1
        self._add_cone(0, 0, 1, 8, 4.6, 4)
        # Base disk r=8, h=1
        self._add_cyl(0, 0, 0, 8, 1)

        # Central bore cut: cylinder r=4.2, h=7 starting at z=-1
        self._add_cyl(0, 0, -1, 4.2, 7, cut=True)
        # Entry chamfer cut: cone r1=4.5 r2=4.2, h=1
        self._add_cone(0, 0, 0, 4.5, 4.2, 1)  # forms chamfer shape (not a cut here)

        # Decorative fins (small cones along X/Y axes, approximated as small cylinders)
        # Layer 1 z=4.3
        self._add_cyl(-4.2, 0, 4.3, 0.5, 1)
        self._add_cyl(4.2, 0, 4.3, 0.5, 1)
        self._add_cyl(0, 4.2, 4.3, 0.5, 1)
        self._add_cyl(0, -4.2, 4.3, 0.5, 1)
        # Layer 2 z=4.0
        self._add_cyl(-4.2, 0.5, 4.0, 0.45, 0.8)
        self._add_cyl(4.2, -0.5, 4.0, 0.45, 0.8)
        self._add_cyl(0.5, 4.2, 4.0, 0.45, 0.8)
        self._add_cyl(-0.5, -4.2, 4.0, 0.45, 0.8)
        # Layer 3 z=3.7
        self._add_cyl(-4.2, 1, 3.7, 0.4, 0.6)
        self._add_cyl(4.2, -1, 3.7, 0.4, 0.6)
        self._add_cyl(1, 4.2, 3.7, 0.4, 0.6)
        self._add_cyl(-1, -4.2, 3.7, 0.4, 0.6)

    def _pt(self, x, y):
        return Point(self._sketch, x, y)

    def _add_box(self, x, y, z, w, d, h, cut=False):
        self.add_operation(Box(self._pt(x, y), w, d, h, cut=cut))

    def _add_cyl(self, x, y, z, radius, height, cut=False):
        self.add_operation(Cylinder(self._pt(x, y), radius, height, cut=cut))

    def _add_cone(self, x, y, z, r1, r2, height):
        self.add_operation(Cone(self._pt(x, y), r1, r2, height))

    def _add_sphere(self, x, y, z, radius, cut=False):
        self.add_operation(Sphere(self._pt(x, y), radius, cut=cut))

    def _add_extrusion(self, shape, end, start=0, cut=False):
        self.add_operation(Extrusion(shape, end=end, start=start, cut=cut))


part = ZScrewCover()
show(part)