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# Copyright (c) 2020, Matthew Broadway, https://github.com/mozman/ezdxf/discussions/451
# Copyright (c) 2022, Manfred Moitzi
# License: MIT License
from __future__ import annotations
import pathlib
import matplotlib.pyplot as plt
import ezdxf
from ezdxf.layouts import Modelspace
from ezdxf.addons.drawing import RenderContext, Frontend
from ezdxf.addons.drawing.matplotlib import MatplotlibBackend
CWD = pathlib.Path("~/Desktop/Outbox").expanduser()
if not CWD.exists():
CWD = pathlib.Path(".")
def draw_raster(msp: Modelspace, x_size: int, y_size: int):
for x in range(x_size):
for y in range(y_size):
text = f"x={x}, y={y}"
msp.add_text(
text, height=0.1, dxfattribs=dict(style="Arial")
).set_placement((x + 0.1, y + 0.1))
msp.add_line((x, y), (x + 1, y))
msp.add_line((x, y), (x, y + 1))
def main():
# create the DXF document
doc = ezdxf.new()
doc.styles.add("Arial", font="arial.ttf")
msp = doc.modelspace()
draw_raster(msp, 10, 10)
doc.set_modelspace_vport(15, center=(5, 5))
doc.saveas(CWD / "raster.dxf")
# export the pixel image
fig: plt.Figure = plt.figure()
ax: plt.Axes = fig.add_axes([0, 0, 1, 1])
ctx = RenderContext(doc)
out = MatplotlibBackend(ax)
Frontend(ctx, out).draw_layout(msp, finalize=True)
# setting the export area:
xmin, xmax = 5, 7
ymin, ymax = 3, 8
ax.set_xlim(xmin, xmax)
ax.set_ylim(ymin, ymax)
# set the output size to get the expected aspect ratio:
fig.set_size_inches(xmax - xmin, ymax - ymin)
fig.savefig(CWD / "x5y3_to_x7y8.png")
if __name__ == "__main__":
main()
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