Generates skull fill for sg13g2 IHP

skull_bones_fill.py

# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: 2024 Uri Shaked

import gdspy

LAYER = 134  # TopMetal2
DATATYPE = 22  # filler
PIXEL_SIZE = 0.28  # um

skull = [
    [9, 4, 16, 5],
    [8, 5, 17, 6],
    [6, 6, 19, 8],
    [5, 8, 20, 12],
    [5, 12, 8, 13],
    [17, 12, 20, 13],
    [11, 12, 14, 15],
    [5, 13, 7, 14],
    [18, 13, 20, 14],
    [6, 14, 7, 17],
    [10, 15, 15, 16],
    [18, 14, 19, 16],
    [7, 15, 8, 17],
    [9, 16, 11, 20],
    [8, 16, 9, 18],
    [11, 16, 12, 17],
    [17, 15, 18, 18],
    [13, 16, 17, 17],
    [14, 17, 17, 18],
    [11, 18, 16, 20],
    [9, 20, 10, 21],
    [11, 20, 12, 21],
    [13, 20, 14, 21],
    [15, 20, 16, 21],
]

bones = [
    [3, 0, 4, 1],
    [2, 1, 5, 2],
    [2, 2, 6, 3],
    [2, 3, 8, 4],
    [3, 4, 10, 5],
    [8, 5, 12, 6],
    [13, 5, 17, 6],
    [15, 4, 23, 5],
    [17, 3, 23, 4],
    [19, 2, 23, 3],
    [20, 1, 23, 2],
    [21, 0, 22, 1],
    [10, 6, 15, 8],
    [8, 8, 12, 9],
    [13, 8, 17, 9],
    [6, 9, 10, 10],
    [15, 9, 19, 10],
    [3, 10, 9, 11],
    [16, 10, 22, 11],
    [2, 11, 7, 13],
    [18, 11, 23, 13],
    [3, 13, 6, 14],
    [19, 13, 22, 14],
]

HEIGHT = 33

layout = gdspy.Cell("skull_fill")
for [x1, y1, x2, y2] in skull:
    layout.add(
        gdspy.Rectangle(
            (x1 * PIXEL_SIZE, (HEIGHT - y1) * PIXEL_SIZE),
            (x2 * PIXEL_SIZE, (HEIGHT - y2) * PIXEL_SIZE),
            layer=LAYER,
            datatype=DATATYPE,
        )
    )

for [x1, y1, x2, y2] in bones:
    layout.add(
        gdspy.Rectangle(
            (x1 * PIXEL_SIZE, (HEIGHT - 19 - y1) * PIXEL_SIZE),
            (x2 * PIXEL_SIZE, (HEIGHT - 19 - y2) * PIXEL_SIZE),
            layer=LAYER,
            datatype=DATATYPE,
        )
    )

# Save the layout to a file
gdspy.write_gds("skull_bones_fill.gds")