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https://github.com/gumyr/build123d.git
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80097a9227
Examples changes that were necessary: - loft.py: failed on macos (only) because of (seemingly) over-precise floating-point accuracy assertion. Loosened the tolerance, and expressed it as a multiple of the expected value. > AssertionError: delta=0.002982314711971412 is greater than tolerance=0.001; got=1306.3375467197516, want=1306.3405290344635 - packed_boxes.py: only emit output files when GEN_DOCS is True (mimicking lego.py).
37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
"""
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name: packed_boxes.py
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by: fischman
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date: November 9th 2023
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desc: Demo packing a bunch of boxes in 2D.
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"""
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import functools
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import operator
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import random
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import build123d as bd
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GEN_DOCS = False
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random.seed(123456)
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test_boxes = [bd.Box(random.randint(1, 20), random.randint(1, 20), random.randint(1, 5))
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for _ in range(50)]
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packed = bd.pack(test_boxes, 3)
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# Lifted from https://build123d.readthedocs.io/en/latest/import_export.html#d-to-2d-projection
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def export_svg(parts, name):
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part = functools.reduce(operator.add, parts, bd.Part())
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view_port_origin=(0, 0, 150)
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visible, hidden = part.project_to_viewport(view_port_origin)
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max_dimension = max(*bd.Compound(children=visible + hidden).bounding_box().size)
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exporter = bd.ExportSVG(scale=100 / max_dimension)
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exporter.add_layer("Visible")
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exporter.add_layer("Hidden", line_color=(99, 99, 99), line_type=bd.LineType.ISO_DOT)
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exporter.add_shape(visible, layer="Visible")
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exporter.add_shape(hidden, layer="Hidden")
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if GEN_DOCS:
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exporter.write(f"../docs/assets/{name}.svg")
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export_svg(test_boxes, "packed_boxes_input")
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export_svg(packed, "packed_boxes_output")
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