create something more organised for circular and half circular windows

[alexandrecuer]

create something more organised for circular and half circular windows

def semicircular_aperture(
    center: Point3D,
    radius: float,
    plane: Plane,
    segments: int = 16,
) -> Face3D:

    points = [
        plane.o
        + plane.x * (center.x + radius * math.cos(math.pi * i / segments))
        + plane.y * (center.y + radius * math.sin(math.pi * i / segments))
        for i in range(segments + 1)
    ]

    return Face3D(points)

Originally posted by @alexandrecuer in #178 (comment)