Struct Directions 

pub struct Directions {
    pub resolution: f64,
    pub crease: f64,
    pub rounds: u32,
    pub cutoff: Cutoff,
}

How face_directions and axis_of_revolution read a mesh’s normals.

Fields

resolution: f64

The angle, in radians, within which normals are one direction: face directions closer than this are one, a face direction is the mean normal of the triangles within it, and a wall is a triangle whose normal is within it of perpendicular to an axis. At most π/6, so the ring out to three times it stays on one side of the perpendicular.

crease: f64

The angle, in radians, between two neighbouring triangles’ normals at which smoothing stops: an edge this sharp is a crease, and the faces either side of it are smoothed apart.

rounds: u32

Rounds of smoothing: each averages every triangle’s normal with its neighbours’ across the edges that are not creases, by area.

cutoff: Cutoff

How far past the resolution a face direction reaches for the triangles only their smoothed normals put within it: to the cutoff’s threshold over the angles of its triangles’ own normals from their mean, weighed by area, and never less than the resolution. Cutoff::All takes every one.

Implementations

impl Directions

pub fn check(&self) -> OgeomResult<()>

The options checked: a resolution in (0, π/6], a crease in (0, π] and the cutoff’s number finite and positive.

Errors

OgeomError::Domain for any of them out of its range or not finite.

Trait Implementations

impl Clone for Directions

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Directions

impl Debug for Directions

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

Formats the value using the given formatter.

impl Default for Directions

fn default() -> Self

A resolution of 5°, a crease of 30°, three rounds and a cutoff at three RMS: a draft of a degree or two is one direction with its face, the angle a scan’s noise of a tenth of a millimetre opens between neighbouring triangles a millimetre across stays well inside the crease, and three rounds average each normal with some thirty triangles’. A face’s noise spreads its normals’ angles as a Rayleigh distribution, so three RMS leave out one of a face’s triangles in some eight thousand (e⁻⁹).

impl PartialEq for Directions

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Directions