Anchor

class ipkiss3.all.Anchor

An anchor is a virtual element in a cell. It is exposed, which means you can use it in a i3.place_and_route call or in an i3.Circuit, to refer to its specific position.

Note

Anchors are only supported on Layout.

Parameters:

name: str and String that contains only ISO/IEC 8859-1 (extended ASCII py3) or pure ASCII (py2) characters, required

The name of the anchor. Cannot have a cardinal like name: N, NE, EN, E, SE, ES, S, SW, WS, W, NW, WN, C, CE, EC, CW, WC, CS, SC, CN, NC

position: Coord2, optional

Anchor’s position. Default is (0, 0)

Examples

import si_fab.all as pdk  # noqa: F401
from picazzo3.fibcoup.curved import FiberCouplerCurvedGrating
from ipkiss3 import all as i3

# Defining the pcells
class RoutingBox(i3.PCell):
    class Layout(i3.LayoutView):
        def generate(self, layout):
            layout += i3.Anchor(position=(0, 100), name="top_anchor")
            layout += i3.Anchor(position=(200, 0), name="right_anchor")
            layout += i3.Anchor(position=(-200, 0), name="left_anchor")
            layout += i3.Box(i3.Layer(0), (0, 0), (400, 200))
            return layout

gr = FiberCouplerCurvedGrating()
circuit = i3.Circuit(
    insts={"box": RoutingBox(), "grb1": gr, "grb2": gr},
    specs=[
        i3.Place("grb1:out", position=(-20, 0), relative_to="box@left_anchor"),
        i3.Place("box", position=(1000, 1000)),
        i3.Place("grb2:out", position=(20, 0), angle=180, relative_to="box@right_anchor"),
        i3.ConnectManhattan(
            "grb1:out",
            "grb2:out",
            control_points=[i3.H(20, "box@top_anchor")],
        ),
    ],
)
circuit_layout = circuit.Layout()
circuit_layout.visualize()