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# Copyright (c) 2020-2022, Manfred Moitzi
# License: MIT License
import pathlib
from time import perf_counter
import ezdxf
from ezdxf.render.forms import sphere
from ezdxf.addons import MengerSponge
from ezdxf.addons.pycsg import CSG
CWD = pathlib.Path("~/Desktop/Outbox").expanduser()
if not CWD.exists():
CWD = pathlib.Path(".")
# ------------------------------------------------------------------------------
# This example shows how to use the pycsg add-on (Constructive Solid Geometry).
#
# docs: https://ezdxf.mozman.at/docs/addons/pycsg.html
# ------------------------------------------------------------------------------
def main():
doc = ezdxf.new()
doc.layers.new("sponge", dxfattribs={"color": 5})
doc.layers.new("sphere", dxfattribs={"color": 6})
doc.set_modelspace_vport(6, center=(5, 0))
msp = doc.modelspace()
sponge1 = MengerSponge(level=3).mesh()
sphere1 = sphere(count=32, stacks=16, radius=0.5, quads=True).translate(
0.25, 0.25, 1
)
t0 = perf_counter()
subtract = CSG(sponge1, meshid=1) - CSG(sphere1, meshid=2)
t1 = perf_counter()
# get mesh result by id
subtract.mesh(1).render_mesh(msp, dxfattribs={"layer": "sponge"})
subtract.mesh(2).render_mesh(msp, dxfattribs={"layer": "sphere"})
print(f"runtime: {t1-t0:.3f}s")
doc.saveas(CWD / "csg_sphere_vs_menger_sponge.dxf")
if __name__ == "__main__":
main()
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