"""Key plate of the Adafruit MacroPad RP2040 kit (Adafruit product 5128): a 59.69 x 78.74 mm plate with rounded
corners and a 3 x 4 grid of 14.224 mm square key switch cut-outs at 19.05 mm (0.75 in) pitch.

The plate lies on the XY plane from z = 0, centred on the origin, the long side along Y. Measured from Adafruit's
published model (MIT); see the README.
"""
from steve import Model

thickness = 1.57  # mm Plate thickness

# mm, measured on Adafruit's model "5128 MacroPad RP2040-Keyplate.step" (its mid-thickness section, every edge read):
PLATE = {
    "width": 59.69,       # X (2.35 in)
    "length": 78.74,      # Y (3.1 in)
    "corner_r": 2.54,     # outside corner radius (0.1 in)
    "cutout": 14.224,     # square switch cut-out (0.56 in)
    "pitch": 19.05,       # cut-out centre pitch, both ways (0.75 in)
    "columns": 3,         # across X
    "rows": 4,            # along Y
}

p = PLATE
w, l, r = p["width"], p["length"], p["corner_r"]
x, y = w / 2, l / 2
model = Model()
with model.sketch("plate_sketch", on="XY", name="Plate") as sk:
    sk.line("bottom", (-x + r, -y), (x - r, -y))
    sk.arc("corner_1", (x - r, -y + r), r, 270, 360)
    sk.line("right", (x, -y + r), (x, y - r))
    sk.arc("corner_2", (x - r, y - r), r, 0, 90)
    sk.line("top", (x - r, y), (-x + r, y))
    sk.arc("corner_3", (-x + r, y - r), r, 90, 180)
    sk.line("left", (-x, y - r), (-x, -y + r))
    sk.arc("corner_4", (-x + r, -y + r), r, 180, 270)
model.extrude("plate", "plate_sketch", distance=thickness, name="Plate")
with model.sketch("cutout_sketch", on="XY", name="Switch cut-outs") as sk:
    for i in range(p["columns"]):
        for j in range(p["rows"]):
            cx = (i - (p["columns"] - 1) / 2) * p["pitch"]
            cy = (j - (p["rows"] - 1) / 2) * p["pitch"]
            sk.center_rect(f"cutout_{i}_{j}", (cx, cy), p["cutout"], p["cutout"])
model.extrude("cutouts", "cutout_sketch", distance=thickness, op="cut", name="Switch cut-outs")
result = model.result()