Lasse Lian
6df69e9def
Thin Extrude builds walls of a set thickness along sketch curves, open chains and closed loops, with the wall centred, inside, outside or on both sides at two thicknesses. Saved under format 20 (thin on an Extrude); an extrude without thin saves as before. Closes #721.
21 lines
1.3 KiB
Markdown
21 lines
1.3 KiB
Markdown
# Analytic reference values
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Closed-form expected values for the cases in [`tests/oracle/`](../../tests/oracle/) whose shape
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has one: prisms, cylinders, cones and frustums, spheres and caps, tori and solids of revolution
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(Pappus), fillets on straight edges (a constant radius, or one varying along the edge), shells,
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patterns of these, and folded sheet metal (flats plus bends as annular sectors). Each script is
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plain Python 3 (standard library only) with one function per case. Running a script from the repository root rewrites the
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`expected.json` of its cases with `"source": "analytic"` and a `method` string giving the formulas:
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```sh
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python3 tools/oracle-analytic/cases_basic.py # 01-29, 82: boxes, holes, revolves, sketches, thin walls
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python3 tools/oracle-analytic/cases_features.py # 32-66: fillets, shells, sweeps, patterns
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python3 tools/oracle-analytic/cases_sheet_metal.py # 67-76: sheet metal
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python3 tools/oracle-analytic/cases_fillets.py # 77-81: variable, chord-length, tapered and spline fillets
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```
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Where a value depends on a SolidCraft convention rather than on geometry alone (a shell's sharp
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inner corner, a sheet-metal corner relief, where a flange height is measured), `method` or
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`note` says which convention is used. Never change a value to match SolidCraft's output: if they
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disagree, find out which one is wrong.
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