laygo2.interface.gdspy module#

This module implements interfaces with gds files via gdspy.

laygo2.interface.gdspy.export(db, filename, cellname=None, scale=1e-09, layermapfile='default.layermap', physical_unit=1e-09, logical_unit=0.001, pin_label_height=0.1, svg_filename=None, png_filename=None)[source]#

Export a laygo2.object.database.Library object to a gds file via gdspy.

Parameters:
  • db (laygo2.database.Library) – The library database to exported.

  • filename (str, optional) – The name of output gds file.

  • cellname (str or List[str]) – The name(s) of cell(s) to be exported.

  • scale (float) – The scaling factor between laygo2’s integer coordinats actual physical coordinates.

  • layermapfile (str) – the name of layermap file.

  • physical_unit (float, optional) – GDS physical unit.

  • logical_unit (float, optional) – GDS logical unit.

  • pin_label_height (float, optional) – the height of pin label.

  • svg_filename (str, optional) – If specified, it exports a svg file with the specified filename.

  • svg_filename – If specified, it exports a png file with the specified filename (svg_filename needs to be specified as well).

Example

>>> import laygo2
>>> from laygo2.object.database import Design
>>> from laygo2.object.physical import Rect, Pin, Instance, Text
>>> # Create a design.
>>> dsn = Design(name="mycell", libname="genlib")
>>> # Create layout objects.
>>> r0 = Rect(xy=[[0, 0], [100, 100]], layer=["M1", "drawing"])
>>> p0 = Pin(xy=[[0, 0], [50, 50]], layer=["M1", "pin"], name="P")
>>> i0 = Instance(libname="tlib", cellname="t0", name="I0", xy=[0, 0])
>>> t0 = Text(xy=[[50, 50], [100, 100]], layer=["text", "drawing"], text="T")
>>> # Add the layout objects to the design object.
>>> dsn.append(r0)
>>> dsn.append(p0)
>>> dsn.append(i0)
>>> dsn.append(t0)
>>> #
>>> # Export to a gds file.
>>> lib = laygo2.object.database.Library(name="mylib")
>>> lib.append(dsn)
>>> laygo2.interface.gds.export(lib, filename="mylayout.gds")