masque/examples/tutorial/basic_shapes.py

117 lines
2.8 KiB
Python

from typing import Tuple, Sequence
import numpy
from numpy import pi
from masque import (
layer_t, Pattern, Label, Port,
Circle, Arc, Polygon,
)
import masque.file.gdsii
# Note that masque units are arbitrary, and are only given
# physical significance when writing to a file.
GDS_OPTS = dict(
meters_per_unit = 1e-9, # GDS database unit, 1 nanometer
logical_units_per_unit = 1e-3, # GDS display unit, 1 micron
)
def hole(
radius: float,
layer: layer_t = (1, 0),
) -> Pattern:
"""
Generate a pattern containing a single circular hole.
Args:
radius: Circle radius.
layer: Layer to draw the circle on.
Returns:
Pattern containing a circle.
"""
pat = Pattern(shapes=[
Circle(radius=radius, offset=(0, 0), layer=layer),
])
return pat
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 containing a 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(shapes=[
Polygon(offset=(0, 0), layer=layer, vertices=vertices),
])
return pat
def smile(
radius: float,
layer: layer_t = (1, 0),
secondary_layer: layer_t = (1, 2)
) -> Pattern:
"""
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 containing a smiley face
"""
# Make an empty pattern
pat = Pattern()
# 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
def main() -> None:
lib = {}
lib['hole'] = hole(1000)
lib['smile'] = smile(1000)
lib['triangle'] = triangle(1000)
masque.file.gdsii.writefile(lib, 'basic_shapes.gds', **GDS_OPTS)
lib['triangle'].visualize()
if __name__ == '__main__':
main()