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121 lines
2.8 KiB
Python
121 lines
2.8 KiB
Python
from typing import Sequence
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import numpy
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from numpy import pi
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from masque import (
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layer_t, Pattern, Label, Port,
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Circle, Arc, Polygon,
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)
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import masque.file.gdsii
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# Note that masque units are arbitrary, and are only given
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# physical significance when writing to a file.
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GDS_OPTS = dict(
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meters_per_unit = 1e-9, # GDS database unit, 1 nanometer
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logical_units_per_unit = 1e-3, # GDS display unit, 1 micron
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)
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def hole(
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radius: float,
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layer: layer_t = (1, 0),
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) -> Pattern:
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"""
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Generate a pattern containing a single circular hole.
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Args:
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radius: Circle radius.
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layer: Layer to draw the circle on.
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Returns:
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Pattern containing a circle.
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"""
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pat = Pattern()
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pat.shapes[layer].append(
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Circle(radius=radius, offset=(0, 0))
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)
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return pat
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def triangle(
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radius: float,
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layer: layer_t = (1, 0),
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) -> Pattern:
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"""
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Generate a pattern containing a single triangular hole.
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Args:
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radius: Radius of circumscribed circle.
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layer: Layer to draw the circle on.
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Returns:
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Pattern containing a triangle
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"""
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vertices = numpy.array([
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(numpy.cos( pi / 2), numpy.sin( pi / 2)),
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(numpy.cos(pi + pi / 6), numpy.sin(pi + pi / 6)),
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(numpy.cos( - pi / 6), numpy.sin( - pi / 6)),
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]) * radius
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pat = Pattern()
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pat.shapes[layer].extend([
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Polygon(offset=(0, 0), vertices=vertices),
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])
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return pat
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def smile(
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radius: float,
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layer: layer_t = (1, 0),
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secondary_layer: layer_t = (1, 2)
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) -> Pattern:
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"""
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Generate a pattern containing a single smiley face.
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Args:
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radius: Boundary circle radius.
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layer: Layer to draw the outer circle on.
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secondary_layer: Layer to draw eyes and smile on.
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Returns:
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Pattern containing a smiley face
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"""
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# Make an empty pattern
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pat = Pattern()
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# Add all the shapes we want
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pat.shapes[layer] += [
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Circle(radius=radius, offset=(0, 0)), # Outer circle
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]
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pat.shapes[secondary_layer] += [
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Circle(radius=radius / 10, offset=(radius / 3, radius / 3)),
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Circle(radius=radius / 10, offset=(-radius / 3, radius / 3)),
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Arc(
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radii=(radius * 2 / 3, radius * 2 / 3), # Underlying ellipse radii
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angles=(7 / 6 * pi, 11 / 6 * pi), # Angles limiting the arc
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width=radius / 10,
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offset=(0, 0),
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),
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]
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return pat
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def main() -> None:
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lib = {}
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lib['hole'] = hole(1000)
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lib['smile'] = smile(1000)
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lib['triangle'] = triangle(1000)
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masque.file.gdsii.writefile(lib, 'basic_shapes.gds', **GDS_OPTS)
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lib['triangle'].visualize()
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if __name__ == '__main__':
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main()
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