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argelander-providers

v0.0.1

Published

Standalone StateProviders for Argelander: near-earth SGP4/TLE and pre-sampled state playback behind the frozen SPEC-PROVIDER seam, with worker port marshalling. Reserved pre-release.

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Maintainers

paulmramirezpaulmramirez

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Readme

argelander-providers

Standalone StateProviders below the frozen SPEC-PROVIDER seam (ADR-0008). Sgp4Provider propagates near-earth TLEs from source (Vallado formulation, WGS-72) and answers TEME natively or ITRF93/IAU_EARTH through a rendering-grade GMST spin; deep-space elements refuse until SDP4 lands. PresampledProvider plays back per-body sampled state tables (CSV ingestion via parsePresampledCsv) with cubic Hermite interpolation and slerped orientation. serveStateProvider and remoteStateProvider marshal any provider across a Web Worker or MessagePort boundary with transferable batches so propagation stays off the main thread (AGE-05). Epochs outside coverage refuse atomically with CoverageRefusalError; nothing is clamped and nothing is NaN-filled.