Struct SteinerPoint 

#[non_exhaustive]
pub struct SteinerPoint {
    pub seam: [u32; 2],
    pub toward: u32,
    pub halvings: u32,
}

A point triangulate_shell_face adds inside a face, as a chain of midpoints of the face’s own points (#283): the midpoint m of the seam from seam[0] to seam[1], then halvings times the midpoint of m and the point so far, starting from toward.

A caller that lifts the face back into space places the point with the same chain over its own points (Self::place). On a face lying in an axis plane, the midpoint of two points with that coordinate in common keeps it exactly, so the point lies exactly in the plane; elsewhere it lies within the rounding of the chain.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

seam: [u32; 2]

The seam’s two ends, by index into ShellFaceTriangulation::points.

toward: u32

The point the seam’s midpoint is moved towards: a corner of one of the seam’s two triangles, possibly an earlier Steiner point.

halvings: u32

How often the point is moved half way, at least once.

Implementations

impl SteinerPoint

pub fn place<T>(&self, at: impl Fn(u32) -> T, midpoint: impl Fn(T, T) -> T) -> T

where T: Copy,

The point by its chain of midpoints, over any point type: at gives a point by its index (earlier Steiner points included), and midpoint the midpoint of two points.

Trait Implementations

impl Clone for SteinerPoint

fn clone(&self) -> SteinerPoint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SteinerPoint

impl Debug for SteinerPoint

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

Formats the value using the given formatter.

impl Eq for SteinerPoint

impl Hash for SteinerPoint

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for SteinerPoint

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SteinerPoint