Segment counts for a smooth sphere (star/planet/moon) — picks the
highest-detail level whose threshold the body's current apparent size
clears, so a body zoomed in close enough to fill the screen gets a
properly round silhouette instead of visible facets.
Segment counts for a smooth sphere (star/planet/moon) — picks the highest-detail level whose threshold the body's current apparent size clears, so a body zoomed in close enough to fill the screen gets a properly round silhouette instead of visible facets.