Struct ZeroCrossings 

pub struct ZeroCrossings {
    pub near_m: Option<f64>,
    pub far_m: Option<f64>,
}

Both line-of-sight crossings a single fixed bore angle can produce (Tier 2 whole-branch review, C2): a rifle whose sight sits above its bore generally crosses a level line of sight TWICE on a rising shot — an ascending “near zero” close to the muzzle, and a descending “far zero” past the apex. The classic 25/300-yard battle-zero pairing is one bore angle producing both. TrajectorySolver’s internal find_zero_range and the public calculate_zero_range_from_angle_* functions return both rather than silently choosing one, because find_zero_angle’s own choice of root depends on the target distance it was asked to solve for — the forward and inverse solvers are NOT a single-valued pair.

Either field may be None when the solved envelope doesn’t reach that crossing (e.g. a short --max-range that stops before the far crossing, or a target height high enough that the trajectory never rises to it at all). At least one is always Some on Ok.

Fields

near_m: Option<f64>

Downrange distance (meters) of the near, ascending crossing, if the solved envelope reaches it.

far_m: Option<f64>

Downrange distance (meters) of the far, descending crossing – what “sighted in at D yards” conventionally means – if the solved envelope reaches it.

Trait Implementations

impl Clone for ZeroCrossings

fn clone(&self) -> ZeroCrossings

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ZeroCrossings

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for ZeroCrossings

fn eq(&self, other: &ZeroCrossings) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ZeroCrossings

impl StructuralPartialEq for ZeroCrossings