samples and cellSize were validated but isoValue and origin were not:
iso = NaN or +inf silently returned an empty mesh, and origin = NaN gave
NaN positions. Extend Extract's existing top-of-method validation authority
to reject non-finite isoValue and non-finite origin components with
ArgumentException, matching the existing style, with tests for each
component.
Overflow at extreme magnitudes (cellSize ~3e38, or finite samples whose
interpolation overflows to inf) is a separate, float-domain limit rather
than a validated-input error; documented in the XML doc and provenance
notes, deliberately not range-checked.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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