CAD_Python_Scripting/dpad.py at main · ajmalpro11/CAD_Python_Scripting · GitHub

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# ============================================================
# RetroPad - D-Pad
# Description : build123d script to recreate the D-Pad part
# Reference   : https://github.com/jtgans/RetroPad/tree/master/case
# Status      : Work in Progress
# ============================================================

from build123d import *
from ocp_vscode import show

# ── Dimensions (measured from reference STL via MeshLab) ──
cyl_r   = 16.03   # cylinder radius
cyl_h   = 8       # cylinder height
arm_w   = 10      # width of each plus arm
arm_l   = 28      # length of each plus arm
cross_h = 4       # height of cross (top and bottom)

# ── Build the D-Pad ──
with BuildPart() as dpad:
    # Step 1: Base cylinder
    Cylinder(radius=cyl_r, height=cyl_h)

    # Step 2: Plus shape on TOP
    with BuildSketch(Plane.XY.offset(cyl_h/2)):
        Rectangle(arm_l, arm_w)
        Rectangle(arm_w, arm_l)
    extrude(amount=cross_h)

    # Step 3: Plus shape on BOTTOM
    with BuildSketch(Plane.XY.offset(-cyl_h/2)):
        Rectangle(arm_l, arm_w)
        Rectangle(arm_w, arm_l)
    extrude(amount=-cross_h)

    # Step 4: Chamfer all top edges of the plus
    top_z = dpad.part.faces().sort_by(Axis.Z)[-1].center().Z
    top_edges = dpad.part.edges().filter_by_position(
        Axis.Z,
        minimum=top_z - 0.1,
        maximum=top_z + 0.1
    )
    chamfer(top_edges, length=1)

# ── Show in OCP Viewer ──
show(dpad)

print(f"Generated Volume : {dpad.part.volume:.3f} mm³")
print(f"Target Volume    : 7947.733 mm³")
print(f"Difference       : {dpad.part.volume - 7947.733:.3f} mm³")