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Store text polygons in oas file, load when creating labels
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| # This code is part of KQCircuits | ||
| # Copyright (C) 2024 IQM Finland Oy | ||
| # | ||
| # This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public | ||
| # License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later | ||
| # version. | ||
| # | ||
| # This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied | ||
| # warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. | ||
| # | ||
| # You should have received a copy of the GNU General Public License along with this program. If not, see | ||
| # https://www.gnu.org/licenses/gpl-3.0.html. | ||
| # | ||
| # The software distribution should follow IQM trademark policy for open-source software | ||
| # (meetiqm.com/iqm-open-source-trademark-policy). IQM welcomes contributions to the code. | ||
| # Please see our contribution agreements for individuals (meetiqm.com/iqm-individual-contributor-license-agreement) | ||
| # and organizations (meetiqm.com/iqm-organization-contributor-license-agreement). | ||
|
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| from functools import lru_cache | ||
| from pathlib import Path | ||
| from kqcircuits.pya_resolver import pya | ||
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| # Expected properties of the text geometry as loaded from the ``font_polygons.oas`` file | ||
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| # File path to the ``font_polygons.oas`` file | ||
| OAS_PATH = str(Path(__file__).parent.joinpath("font_polygons.oas")) | ||
| # Letters in the oas file | ||
| OAS_LETTERS = [chr(ord("A") + i) for i in range(0, 32)] + [chr(ord("0") + i) for i in range(0, 10)] | ||
| # Spacing between two letters | ||
| OAS_TEXT_SPACING = 300.0 | ||
| # "mag" parameter set for TEXT pcell in oas file | ||
| OAS_TEXT_MAGNIFICATION = 500.0 | ||
| # dbu in the oas file | ||
| OAS_DBU = 0.001 | ||
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| def get_text_polygon(label: str, size: float = OAS_TEXT_MAGNIFICATION) -> pya.Region: | ||
| """Returns the given label string as a region. | ||
| Utilizes speed ups compared to generating text geometry with KLayout's TEXT PCells. | ||
| Only supports characters layed out in the ``font_polygons.oas`` file. | ||
| """ | ||
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| font_polygons = load_font_polygons() | ||
| unsported_characters = set(x.upper() for x in label) - set(font_polygons.keys()) | ||
| if unsported_characters: | ||
| raise ValueError(f"Unsupported characters for get_text_polygon: {unsported_characters}") | ||
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| norm_size = size / OAS_TEXT_MAGNIFICATION | ||
| spacing = norm_size * OAS_TEXT_SPACING / OAS_DBU | ||
| label_region = pya.Region() | ||
| if label is not None: | ||
| for i, letter in enumerate(str(label)): | ||
| label_region += ( | ||
| font_polygons[letter.upper()].scaled_and_snapped(0, norm_size, 1, 0, norm_size, 1).moved(i * spacing, 0) | ||
| ) | ||
| return label_region | ||
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| @lru_cache(maxsize=None) | ||
| def load_font_polygons() -> dict[str, pya.Region]: | ||
| """Loads from static OAS file a region for each letter used in labels. | ||
| Cached for reuse. | ||
| """ | ||
| layout = pya.Layout() | ||
| layout.read(OAS_PATH) | ||
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| font_dict = {letter: pya.Region() for letter in OAS_LETTERS} | ||
| for shape in pya.Region(layout.top_cells()[-1].begin_shapes_rec(layout.layer(129, 1))).each(): | ||
| index = round(shape.bbox().to_dtype(OAS_DBU).p1.x) // OAS_TEXT_MAGNIFICATION | ||
| font_dict[OAS_LETTERS[int(index)]] += pya.Region(shape.moved(-OAS_TEXT_MAGNIFICATION * index / OAS_DBU, 0)) | ||
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| return font_dict |
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klayout_package/python/scripts/macros/generate/font_polygon_oas.lym
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| <?xml version="1.0" encoding="utf-8"?> | ||
| <klayout-macro> | ||
| <description>Lay out all characters</description> | ||
| <version/> | ||
| <category>pymacros</category> | ||
| <prolog/> | ||
| <epilog/> | ||
| <doc/> | ||
| <autorun>false</autorun> | ||
| <autorun-early>false</autorun-early> | ||
| <priority>0</priority> | ||
| <shortcut/> | ||
| <show-in-menu>false</show-in-menu> | ||
| <group-name/> | ||
| <interpreter>python</interpreter> | ||
| <dsl-interpreter-name/> | ||
| <text># This code is part of KQCircuits | ||
| # Copyright (C) 2024 IQM Finland Oy | ||
| # | ||
| # This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public | ||
| # License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later | ||
| # version. | ||
| # | ||
| # This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied | ||
| # warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. | ||
| # | ||
| # You should have received a copy of the GNU General Public License along with this program. If not, see | ||
| # https://www.gnu.org/licenses/gpl-3.0.html. | ||
| # | ||
| # The software distribution should follow IQM trademark policy for open-source software | ||
| # (meetiqm.com/iqm-open-source-trademark-policy). IQM welcomes contributions to the code. | ||
| # Please see our contribution agreements for individuals (meetiqm.com/iqm-individual-contributor-license-agreement) | ||
| # and organizations (meetiqm.com/iqm-organization-contributor-license-agreement). | ||
|
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| from kqcircuits.pya_resolver import pya | ||
| from kqcircuits.defaults import default_layers | ||
| from kqcircuits.klayout_view import KLayoutView | ||
|
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| keyboard_chars = [chr(ord("A") + i) for i in range(0, 32)] + [chr(ord("0") + i) for i in range(0, 10)] | ||
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| polygons = {} | ||
| view = KLayoutView() | ||
| layout = view.layout | ||
| for i, label in enumerate(keyboard_chars): | ||
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| char_cell = layout.create_cell( | ||
| "TEXT", | ||
| "Basic", | ||
| { | ||
| "layer": default_layers["1t1_base_metal_gap"], | ||
| "text": label, | ||
| "mag": 500, | ||
| }, | ||
| ) | ||
| layout.top_cells()[0].insert(pya.DCellInstArray(char_cell.cell_index(), pya.DTrans(0, False, i*500, 0))) | ||
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| print("Label character shapes generated. Please save the generated layout as kqcircuits/util/font_polygons.oas") | ||
| print("Uncheck 'Store PCell and library context information' in 'Save Layout options' window") | ||
| </text> | ||
| </klayout-macro> |