Numerically approximate ellipse perimeter - #383

Merged

tomcur merged 23 commits into

linebender:mainfrom

tomcur:numerical-ellipse-perimeter

Oct 6, 2024

Commits on Oct 1, 2024

Numerically calculate ellipse perimeter
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a882099
Clippy
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50e0caf

Commits on Oct 2, 2024

Improve break metric, fix h_m calculation, test with known perimeters
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5313082
Add note about accuracy bound
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6758c5b
Add docs, circular ellipses are exact
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d4aa71a
Not quadratic with large eccentricity
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6357b81
Add method based on arithmetic-geometric mean
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Compile-time expanded binomial series
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Support Rust 1.65
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Typo
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1fc6e4a
Improve docs
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d13cd29
Fix derivation typo and add convergence value
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Fix math
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9fffb75

Commits on Oct 3, 2024

Remove now-redundant trivial case
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Note rounding errors
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ac82471
Simplify redundant calculations
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7a8c889
Multiplication instead of division
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3d325ec

Commits on Oct 4, 2024

Use powi and remove note about const fn on nightly* Rust
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825a0e0
Lift some arithmetic operations to compile-time
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Commits on Oct 6, 2024

Add negative radii to bez test
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b07c545
Check for finiteness, but note we currently only expect NaN
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7fe8b55
Compare with small epsilon
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193f665
Powi
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