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has_sun_ephemeris

Defined in: ephemeris.rs:205

fn has_sun_ephemeris(body: &str) -> bool

Whether a Sun direction from this central body is computed rather than guessed.

sun_direction_from_body answers +X — the vernal equinox — for a body it cannot place, which a caller cannot tell from a real direction. A viewer that draws the Sun as an arrow has to know the difference: a fixed direction is fine for lighting and reads as a measurement when drawn.