ARTICRAFT Rec Parabolic Dish On Azimuth (Sand3D Program)

import sand3d as s3d
import math


def compact_ground_dish():
    pedestal = pedestal_part()
    plate = top_plate_part()
    bracket = elevation_bracket_part()
    fb = s3d.local(plate, 0, 0, 54)
    bracket = s3d.at(bracket, on=fb)
    class="tok-comment"># The fixed bracket is carried by the azimuth joint; keep its geometry grouped with the plate.
    moving = s3d.group(class="tok-string">"top_plate_to_bracket", plate, bracket)
    fa = s3d.local(pedestal, 0, 0, 335)
    moving = s3d.at(moving, on=fa)
    s3d.joint(class="tok-string">"azimuth_axis", moving, fa, kind=class="tok-string">"continuous", axis=class="tok-string">"+Z")
    fr = s3d.local(moving, 0, 0, 254)
    reflector = s3d.at(reflector_part(), on=fr)
    s3d.joint(
        class="tok-string">"elevation_axis",
        reflector,
        fr,
        kind=class="tok-string">"revolute",
        axis=class="tok-string">"-Y",
        range=(-0.20 * 180 / math.pi, 1.10 * 180 / math.pi),
    )
    return s3d.assembly(class="tok-string">"compact_ground_dish", pedestal, moving, reflector)


def pedestal_part():
    return s3d.group(
        class="tok-string">"pedestal",
        s3d.material(
            s3d.at(s3d.extrude(class="tok-string">"base_plinth", s3d.rect(300, 260), 25, both=True), z=12.5),
            class="tok-string">"plastic",
            color=class="tok-string">"class="tok-comment">#6e737a",
        ),
        s3d.material(
            s3d.at(s3d.extrude(class="tok-string">"pedestal_box", s3d.rect(240, 200), 280, both=True), z=165),
            class="tok-string">"plastic",
            color=class="tok-string">"class="tok-comment">#6e737a",
        ),
        s3d.material(
            s3d.at(s3d.extrude(class="tok-string">"pedestal_collar", s3d.circle(180), 30, both=True), z=320),
            class="tok-string">"steel",
            color=class="tok-string">"class="tok-comment">#4d5259",
        ),
    )


def top_plate_part():
    return s3d.group(
        class="tok-string">"top_plate",
        s3d.material(
            s3d.at(s3d.extrude(class="tok-string">"bearing_drum", s3d.circle(170), 30, both=True), z=16),
            class="tok-string">"rubber",
            color=class="tok-string">"class="tok-comment">#141719",
        ),
        s3d.material(
            s3d.at(s3d.extrude(class="tok-string">"rotating_plate", s3d.circle(220), 14, both=True), z=39),
            class="tok-string">"steel",
            color=class="tok-string">"class="tok-comment">#4d5259",
        ),
        s3d.material(
            s3d.at(s3d.extrude(class="tok-string">"center_cap", s3d.circle(84), 16, both=True), z=47),
            class="tok-string">"steel",
            color=class="tok-string">"class="tok-comment">#242629",
        ),
    )


def elevation_bracket_part():
    dark = class="tok-string">"class="tok-comment">#4d5259"
    return s3d.group(
        class="tok-string">"elevation_bracket",
        s3d.material(
            s3d.at(s3d.extrude(class="tok-string">"bracket_base", s3d.rect(130, 120), 50, both=True), x=-80, z=25),
            class="tok-string">"steel",
            color=dark,
        ),
        s3d.material(
            s3d.at(s3d.extrude(class="tok-string">"center_mast", s3d.rect(55, 110), 180, both=True), x=-125, z=140),
            class="tok-string">"steel",
            color=dark,
        ),
        s3d.material(
            s3d.at(s3d.extrude(class="tok-string">"rear_crosshead", s3d.rect(55, 560), 35, both=True), x=-125, z=200),
            class="tok-string">"steel",
            color=dark,
        ),
        s3d.material(
            s3d.at(
                s3d.extrude(class="tok-string">"left_yoke_arm", s3d.rect(160, 50), 80, both=True), x=-60, y=287, z=200
            ),
            class="tok-string">"steel",
            color=dark,
        ),
        s3d.material(
            s3d.at(
                s3d.extrude(class="tok-string">"right_yoke_arm", s3d.rect(160, 50), 80, both=True),
                x=-60,
                y=-287,
                z=200,
            ),
            class="tok-string">"steel",
            color=dark,
        ),
        beam(class="tok-string">"left_brace", (-95, 0, 50), (-100, 245, 160), 30),
        beam(class="tok-string">"right_brace", (-95, 0, 50), (-100, -245, 160), 30),
    )


def beam(name, a, b, t):
    dx = b[0] - a[0]
    dy = b[1] - a[1]
    dz = b[2] - a[2]
    length = math.sqrt(dx * dx + dy * dy + dz * dz)
    mid = ((a[0] + b[0]) / 2, (a[1] + b[1]) / 2, (a[2] + b[2]) / 2)
    yaw = math.degrees(math.atan2(dy, dx))
    pitch = math.degrees(math.atan2(-dz, math.hypot(dx, dy)))
    return s3d.material(
        s3d.at(
            s3d.extrude(name, s3d.rect(length, t), t, both=True),
            x=mid[0],
            y=mid[1],
            z=mid[2],
            ry=pitch,
            rz=yaw,
        ),
        class="tok-string">"steel",
        color=class="tok-string">"class="tok-comment">#242629",
    )


def reflector_part():
    shell = s3d.revolve(
        class="tok-string">"reflector_shell",
        s3d.poly(
            [
                (28, -140),
                (70, -126),
                (165, -88),
                (235, -38),
                (260, 0),
                (248, -10),
                (218, -36),
                (145, -82),
                (50, -116),
                (10, -124),
            ]
        ),
    )
    return s3d.group(
        class="tok-string">"reflector",
        s3d.material(
            s3d.at(s3d.extrude(class="tok-string">"trunnion_shaft", s3d.circle(28), 524, both=True), rx=90),
            class="tok-string">"steel",
            color=class="tok-string">"class="tok-comment">#242629",
        ),
        s3d.material(
            s3d.at(s3d.extrude(class="tok-string">"hub_barrel", s3d.circle(110), 120, both=True), x=-10, ry=90),
            class="tok-string">"steel",
            color=class="tok-string">"class="tok-comment">#4d5259",
        ),
        s3d.material(s3d.at(shell, x=170, ry=90), class="tok-string">"plastic", color=class="tok-string">"class="tok-comment">#e0e6eb"),
        s3d.material(
            beam(class="tok-string">"feed_support_arm", (10, 0, -30), (300, 0, 0), 16), class="tok-string">"steel", color=class="tok-string">"class="tok-comment">#242629"
        ),
        s3d.material(
            s3d.at(s3d.extrude(class="tok-string">"feed_horn", s3d.circle(44), 60, both=True), x=330, ry=90),
            class="tok-string">"rubber",
            color=class="tok-string">"class="tok-comment">#141719",
        ),
    )