Route Bundle (GDSFactory)

import gdsfactory as gf
from gdsfactory.gpdk import PDK

import doroutes as dr

PDK.activate()

import numpy as np

c = gf.Component()
ref = c << dr.pcells.routing_frame()
c.add_ports(ref)

spacing = 1.0  # µm
radius = 5.0  # µm

starts = np.array(
    sorted(
        [p.center for p in c.ports if str(p.name).startswith("in")], key=lambda p: p[1]
    )
)
stops = np.array(
    sorted(
        [p.center for p in c.ports if str(p.name).startswith("out")], key=lambda p: p[1]
    )
)
kwargs = {
    "component": c,
    "straight": "straight",
    "bend": {"component": "bend_euler", "settings": {"radius": 5}},
}

num_links = len(starts)
above = ((starts[:, 1] - stops[:, 1]) > 0).sum()
below = num_links - above

for i, (start, stop) in enumerate(zip(starts, stops, strict=False)):
    dr.add_route_manual(
        start=start,
        stop=stop,
        steps=[
            {"dx": radius + max((below - i - 1), (i - below)) * spacing},
            {"y": dr.util.to_um(c.kcl, stop[1])},
        ],
        **kwargs,
    )
c.show()
dr.util.show_cell(c)

c = gf.Component()
ref = c << dr.pcells.routing_frame()
c.add_ports(ref)
starts = sorted(
    [p for p in c.ports if str(p.name).startswith("in")], key=lambda p: p.center
)
stops = sorted(
    [p for p in c.ports if str(p.name).startswith("out")], key=lambda p: p.center
)

xs = gf.get_cross_section("strip").copy()

xs.__dict__["radius"] = 5
gf.routing.route_bundle(
    c,
    starts,
    stops,
    cross_section=xs,
    straight="straight",
    bend={"component": "bend_euler", "settings": {"radius": 5}},
)
dr.util.show_cell(c)