Struct VentumArc 

pub struct VentumArc {
    pub center: VentumArcPoint,
    pub radius_mil: f64,
    pub start_degrees: f64,
    pub end_degrees: f64,
    pub sweep_degrees: f64,
    pub start_tip: VentumArcPoint,
    pub apex: VentumArcPoint,
    pub end_tip: VentumArcPoint,
}

One circle element that carried a sweep — a horseshoe or other arc — resolved into the points a shooter could index on, but NOT imported as marks. See the module documentation for why the decision is left to the caller.

Every field is in milliradians from the optical center (angles excepted, which are the document’s own degrees), so ReticleMark::new(arc.apex.down_mil, arc.apex.right_mil, MarkKind::Dot) is all it takes to adopt one.

Fields

center: VentumArcPoint

The arc’s center — the point its radius is measured from, NOT an aiming point.

radius_mil: f64

Arc radius in milliradians.

start_degrees: f64

The arc’s start angle, degrees, measured from 3 o’clock and sweeping clockwise (so 270° is the TOP of the reticle — see the module documentation).

For an arc the document drew, this is the document’s own number, reported as written — a Ventum tool is free to write a bearing outside [0, 360) and this is not the place that rewrites it. For the twin of a mirrored repeat, whose angles this module computed by reflection, it is reduced into [0, 360) (MBA-1536).

end_degrees: f64

The arc’s end angle, same convention and same provenance as Self::start_degrees.

sweep_degrees: f64

How far the arc sweeps clockwise from start to end, in (0, 360) degrees. A circle whose angles describe a whole revolution is a ring, not an arc, and never appears here.

start_tip: VentumArcPoint

Where the arc begins: the visible tip at start_degrees.

apex: VentumArcPoint

The sweep midpoint — a horseshoe’s apex, the closed end opposite its gap. The one point on an arc a shooter can index without measuring.

end_tip: VentumArcPoint

Where the arc ends: the visible tip at end_degrees.

Trait Implementations

impl Clone for VentumArc

fn clone(&self) -> VentumArc

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VentumArc

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

Formats the value using the given formatter.

impl Default for VentumArc

fn default() -> VentumArc

Returns the “default value” for a type.

impl PartialEq for VentumArc

fn eq(&self, other: &VentumArc) -> 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 VentumArc

impl StructuralPartialEq for VentumArc