default_lineweights.py

# Copyright (c) 2018-2022 Manfred Moitzi
# License: MIT License
import pathlib
import ezdxf
from ezdxf import zoom
from ezdxf.lldxf.const import VALID_DXF_LINEWEIGHTS

CWD = pathlib.Path("~/Desktop/Outbox").expanduser()
if not CWD.exists():
    CWD = pathlib.Path(".")

# ------------------------------------------------------------------------------
# create lines with all valid lineweights
#
# docs: https://ezdxf.mozman.at/docs/concepts/lineweights.html
# ------------------------------------------------------------------------------


def main():
    doc = ezdxf.new()
    msp = doc.modelspace()
    for index, weight in enumerate(VALID_DXF_LINEWEIGHTS):
        y = index
        msp.add_line((0, y), (10, y), dxfattribs={"lineweight": weight})
        msp.add_text(
            f"Lineweight: {weight / 100.0:0.2f}", dxfattribs={"height": 0.18}
        ).set_placement((0, y + 0.3))

    # switch on application support for displaying lineweights:
    doc.header["$LWDISPLAY"] = 1

    zoom.extents(msp, factor=1.2)
    doc.saveas(CWD / "valid_lineweights.dxf")


if __name__ == "__main__":
    main()