Struct IntrinsicPositions 

pub struct IntrinsicPositions { /* private fields */ }

Certified positions of an intrinsic curve: the unit tangent of its closed-form heading integrated by the composite midpoint rule, each point with a certified bound on its error (the remainder w^3 / 24 (|k'| + k^2) per panel, panels split at seams, and the heading’s, the sums’ and the placement’s rounding).

Implementations

impl IntrinsicPositions

pub fn new2(curve: &Intrinsic2, error: f64) -> Option<IntrinsicPositions>

Positions of a 2D intrinsic curve within about error, half of it spent on the midpoint remainders; None for a non-positive or non-finite error or length, a law with no closed-form bound, or more than MAX_POSITION_PANELS panels.

pub fn new3(curve: &Intrinsic3, error: f64) -> Option<IntrinsicPositions>

Positions of a planar space curve (its torsion law identically zero, Intrinsic3::is_planar); None as for Self::new2, or for a curve with torsion.

pub fn point2(&mut self, s: f64) -> Option<(DVec2, f64)>

The point at arc length s of a 2D curve and a certified bound on its distance from the exact point; None outside [0, length], for a law that does not integrate there, or for a space curve.

pub fn point3(&mut self, s: f64) -> Option<(DVec3, f64)>

Self::point2 for a planar space curve.

pub fn offset_point2(&mut self, s: f64, distance: f64) -> Option<(DVec2, f64)>

The point at arc length s of the 2D curve’s offset by distance to its left (the curve of super::offset_point2) and a certified bound on its distance from the exact one: the point’s, plus |d| times the turn of the left normal by the heading’s rounding through the start frame (its stretch squared over its determinant bounds its condition) and the normalisation’s rounding.

Trait Implementations

impl Clone for IntrinsicPositions

fn clone(&self) -> IntrinsicPositions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IntrinsicPositions

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

Formats the value using the given formatter.