masque/examples/tutorial/basic_shapes.py

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