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import pathlib
import ezdxf
from ezdxf.entities import Hatch
from ezdxf.upright import upright
from ezdxf import path
from ezdxf.math import Vec2
CWD = pathlib.Path("~/Desktop/Outbox").expanduser()
if not CWD.exists():
CWD = pathlib.Path(".")
def all_edge_types_hatch(elevation, extrusion):
hatch = Hatch.new(
dxfattribs={
"layer": "original",
"color": 2,
"elevation": (0.0, 0.0, elevation),
"extrusion": extrusion,
"pattern_name": "SOLID",
"solid_fill": 1,
"associative": 0,
"hatch_style": 0,
"pattern_type": 1,
},
)
# edge-path contains all supported edge types:
ep = hatch.paths.add_edge_path(flags=1)
ep.add_arc( # clockwise oriented ARC
center=(0.0, 13.0),
radius=3.0,
start_angle=-90.0,
end_angle=90.0,
ccw=False,
)
ep.add_ellipse( # clockwise oriented ELLIPSE
center=(0.0, 5.0),
major_axis=(0.0, 5.0),
ratio=0.6,
start_angle=180.0,
end_angle=360.0,
ccw=False,
)
ep.add_line((0.0, 0.0), (10.0, 0.0)) # LINE
ep.add_ellipse( # counter-clockwise oriented ELLIPSE
center=(10.0, 5.0),
major_axis=(0.0, -5.0),
ratio=0.6,
start_angle=0.0,
end_angle=180.0,
ccw=True,
)
ep.add_arc( # counter-clockwise oriented ARC
center=(10.0, 13.0),
radius=3.0,
start_angle=270.0,
end_angle=450.0,
ccw=True,
)
ep.add_spline( # SPLINE
control_points=[
Vec2(10.0, 16.0),
Vec2(9.028174684192452, 16.0),
Vec2(6.824943218065775, 12.14285714285714),
Vec2(3.175056781934232, 19.85714285714287),
Vec2(0.9718253158075516, 16.0),
Vec2(0, 16.0),
],
knot_values=[
0.0,
0.0,
0.0,
0.0,
2.91547594742265,
8.746427842267952,
11.6619037896906,
11.6619037896906,
11.6619037896906,
11.6619037896906,
],
degree=3,
periodic=0,
)
return hatch
doc = ezdxf.new()
msp = doc.modelspace()
hatch = all_edge_types_hatch(elevation=4, extrusion=(0, 0, -1))
msp.add_entity(hatch)
hatch_copy = hatch.copy()
hatch_copy.dxf.layer = "upright"
hatch_copy.dxf.color = 6
upright(hatch_copy)
msp.add_entity(hatch_copy)
p = path.make_path(hatch_copy)
path.render_lwpolylines(msp, [p], dxfattribs={"layer": "paths"})
doc.saveas(CWD / "upright_hatch.dxf")
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