# SPDX-License-Identifier: Apache-2.0
"""A round enclosure whose lid is placed on its base by two mates.

The lid is built where it is easy to build, off to one side, and the mates
put it on: its axis in line with the base's, then the underside of its top
flush with the base's rim, its lip inside the wall. Make the base taller and
the lid follows it up. The one freedom left, the turn about the axis, is
reported by `dxcad describe`.

Tags: mates, assembly
"""

RADIUS = 40.0
HEIGHT = 30.0
WALL = 2.0
LID = 3.0
LIP = 4.0
CLEARANCE = 0.2

base = cut(
    make_cylinder(RADIUS, HEIGHT),
    translate(make_cylinder(RADIUS - WALL, HEIGHT - WALL), (0, 0, WALL)),
)
part("base", base, color="navy")

lip = RADIUS - WALL - CLEARANCE
ring = cut(make_cylinder(lip, LIP), make_cylinder(lip - WALL, LIP))
lid = fuse(make_cylinder(RADIUS, LID), translate(ring, (0, 0, -LIP)))
part("lid", translate(lid, (2 * RADIUS + 20, 0, 0)), color="steel")
mate("lid", "cylinder 1", "base", "cylinder 1", "concentric")
mate("lid", "<Z 2", "base", ">Z", "coincident")