Struct OffsetEvaluator 

pub struct OffsetEvaluator<'a> { /* private fields */ }

The pointwise offset evaluator, bound to one carrier and one orientation convention.

Construction is free — it stores three references and reads nothing — so a caller inside a Newton loop may build one per call without paying anything. site is a short stable label used only by [offset_normal_diagnostic].

Implementations

impl<'a> OffsetEvaluator<'a>

pub fn new( site: &'static str, surface: &'a NurbsSurface, convention: OffsetNormal, ) -> Self

pub fn normal(&self, u: f64, v: f64) -> Result<Vec3, String>

The unit normal alone, for callers that only need the direction (a residual check, or an affine offset that shifts the whole control net by one vector). Evaluates the point only on the lanes that need it.

pub fn at(&self, u: f64, v: f64, distance: f64) -> Result<OffsetSample, String>

The offset of this carrier at (u, v) by distance along the normal (see the module’s sign convention).

Trait Implementations

impl<'a> Clone for OffsetEvaluator<'a>

fn clone(&self) -> OffsetEvaluator<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for OffsetEvaluator<'a>