def port_to_pin_helper(ports_list, cell, layerPinRec):
""" Draws port shapes for visual help in KLayout. """
# Create the pins, as short paths:
# from siepic_tools.config import PIN_LENGTH
PIN_LENGTH = 100
dbu = cell.layout().dbu
for port in ports_list:
if port.name.startswith("el"):
pin_length = port.width
else:
pin_length = PIN_LENGTH * dbu
port_position_i = port.position.to_itype(dbu)
cell.shapes(layerPinRec).insert(
kdb.DPath(
[
port.position - 0.5 * pin_length * port.direction,
port.position + 0.5 * pin_length * port.direction,
],
port.width,
).to_itype(dbu))
cell.shapes(layerPinRec).insert(
kdb.Text(
port.name,
kdb.Trans(kdb.Trans.R0, port_position_i.x,
port_position_i.y))).text_size = (2 / dbu)
def trace_rounded_path(cell, layer, rounded_path, width):
points = []
for item in rounded_path:
points.extend(item.get_points())
dpath = kdb.DPath(points, width, 0, 0)
cell.shapes(layer).insert(dpath)
def draw(self, cell, layer):
""" Draws this port on cell's layer using klayout.db"""
if self.name.startswith("el"):
pin_length = self.width
else:
# port is optical
pin_length = max(2, self.width / 10)
ex = self.direction
# Place a Path around the port pointing towards its exit
port_path = kdb.DPath(
[
self.position - 0.5 * pin_length * ex,
self.position + 0.5 * pin_length * ex,
],
self.width,
)
cell.shapes(layer).insert(port_path)
# Place a small arrow around the tip of the port
from zeropdk.layout.geometry import rotate90
ey = rotate90(ex)
port_tip = kdb.DSimplePolygon(
[
self.position + 0.5 * pin_length * ex,
self.position + 0.4 * pin_length * ex + 0.1 * pin_length * ey,
self.position + 0.4 * pin_length * ex - 0.1 * pin_length * ey,
]
)
cell.shapes(layer).insert(port_tip)
# pin_rectangle = rectangle(self.position, self.width,
# pin_length, ex, ey)
# cell.shapes(layer).insert(pin_rectangle)
# Place a text object annotating the name of the port
cell.shapes(layer).insert(
kdb.DText(
self.name,
kdb.DTrans(kdb.DTrans.R0, self.position.x, self.position.y),
min(pin_length, 20),
0,
)
)
return self
def trace_reference_path(cell, layer, points, width):
dpath = kdb.DPath(points, width, 0, 0)
cell.shapes(layer).insert(dpath)