button.py

# ============================================================
# RetroPad - Button
# Description : build123d script to recreate the Button part
# Reference   : https://github.com/jtgans/RetroPad/tree/master/case
# ============================================================

from build123d import *
from ocp_vscode import show

# ── Dimensions (measured from reference STL via MeshLab) ──
r1, h1 = 9.5 / 2, 15.5     # cylinder radius and height
w, l, h = 1.20, 1.8, 5.5   # clip width, length, height

# ── Build the Button ──
with BuildPart() as button:
    # Step 1: Main cylinder body
    Cylinder(radius=r1, height=h1)

    # Step 2: Add 4 rectangular clips around the base using PolarLocations
    with Locations((0, 0, -h1/2)):
        with PolarLocations(radius=r1, count=4):
            Box(l, w, h, align=(Align.CENTER, Align.CENTER, Align.MIN))

    # Step 3: Chamfer the top edge
    chamfer(button.part.edges().sort_by(Axis.Z)[-1], length=1)

# ── Show in OCP Viewer ──
show(button)

# ── Export ──
export_stl(button.part, "generated/button_generated.stl")
export_step(button.part, "generated/button_generated.step")

print(f"Generated Volume : {button.part.volume:.3f} mm³")
print(f"Target Volume    : 1150.783 mm³")
print(f"Difference       : {button.part.volume - 1150.783:.3f} mm³")
print("✅ Button exported successfully!")