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# Copyright (c) 2020-2021, Manfred Moitzi
# License: MIT License
import pathlib
import math
import ezdxf
from ezdxf import zoom
CWD = pathlib.Path("~/Desktop/Outbox").expanduser()
if not CWD.exists():
CWD = pathlib.Path(".")
# ------------------------------------------------------------------------------
# This example shows how to convert an ELLIPSE into a SPLINE.
# ------------------------------------------------------------------------------
def main():
doc = ezdxf.new()
msp = doc.modelspace()
ellipse = msp.add_ellipse(
center=(0, 0),
major_axis=(1, 0),
ratio=0.5,
start_param=0,
end_param=math.tau,
dxfattribs={"layer": "ellipse"},
)
spline = ellipse.to_spline(replace=False)
spline.dxf.layer = "B-spline"
spline.dxf.color = 1
zoom.extents(msp)
doc.saveas(CWD / "spline_from_ellipse.dxf")
if __name__ == "__main__":
main()
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