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86db6c6bae
* feat: gap-fill API surface parity with nrel-spa JS (v1.0.1) Add formatTime, calcSpa, SpaFormattedResult, SpaFormattedAnglesResult, functionCode parameter for getSpa (spaZa/spaZaInc/spaZaRts/spaAll), incidence field on SpaResult, and export all function code constants. All 48 tests pass including numerical cross-validation against the NREL SPA reference date (Golden CO, 2003-10-17) and surface incidence angle. * docs: add CHANGELOG.md for v1.0.1 release * chore: polish pubspec, fix unused import, add wiki docs
29 lines
1.3 KiB
Markdown
29 lines
1.3 KiB
Markdown
# Changelog
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## [1.0.1] - 2026-05-25
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### Added
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- `formatTime()` formats fractional hours to `HH:MM:SS` strings; returns `"N/A"` for non-finite or negative values
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- `calcSpa()` wraps `getSpa()` and formats sunrise, solarNoon, and sunset as `HH:MM:SS` strings
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- `SpaFormattedResult` — typed result for `calcSpa()` with string time fields
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- `SpaFormattedAnglesResult` — formatted time strings for custom zenith angle results
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- Function code constants exported from the public API: `spaZa`, `spaZaInc`, `spaZaRts`, `spaAll`
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- `functionCode` parameter on `getSpa()` — controls calculation mode (ZA only, incidence, RTS, or all)
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- `incidence` field on `SpaResult` — surface incidence angle in degrees; `NaN` unless `spaZaInc` or `spaAll` is used
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### Changed
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- `getSpa()` now defaults `functionCode` to `spaZaRts` (unchanged behaviour for existing callers)
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- `SpaResult.sunrise`, `solarNoon`, `sunset` are `NaN` when `functionCode` is `spaZa` or `spaZaInc`, matching the JS reference implementation
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## [1.0.0] - 2026-03-08
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### Added
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- `getSpa()` computes solar position for any date and location
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- Custom zenith angle support for twilight calculations
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- Full NREL SPA algorithm (Reda & Andreas, 2004)
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- Accuracy: ±0.0003° for solar zenith angle
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- Valid range: years -2000 to 6000
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- Zero external dependencies
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