pub fn tack_rays(
vessel: Position,
true_wind_direction_deg: f64,
beat_angle_deg: f64,
) -> (Position, Position)Expand description
The vessel’s own two close-hauled headings right now, as ray endpoints
from vessel itself – (starboard_end, port_end).
Unlike layline_rays, there is no mark to test fetchability against
and so nothing to judge: a tack always has two possible headings,
whatever they are actually good for. This is simply
close_hauled_headings_deg, projected out to a chart-drawable
length.