Struct nannou::prelude::geom::Tri

pub struct Tri<V = Vec3>(pub [V; 3]);

A triangle as three vertices.

Implementations

impl<V> Tri<V>

pub fn from_index_tri(vertices: &[V], indices: &[usize; 3]) -> Tri<V> where
    V: Clone, 

Create a Tri by indexing into the given buffer.

Panics if any of the given indices are out of range of the given vertices slice.

pub fn from_vertices<I>(vertices: I) -> Option<Tri<V>> where
    I: IntoIterator<Item = V>, 

Create a Tri from the next three vertices yielded by the given vertices iterator.

Returns None if there were not at least 3 vertices in the given iterator.

pub fn vertices(self) -> Vertices<V>

Produce an iterator yielding each of the vertices of the triangle.

pub fn centroid(self) -> V where
    V: Average, 

Produce the centroid of the triangle aka the “mean”/“average” of all the points.

pub fn map_vertices<F, V2>(self, map: F) -> Tri<V2> where
    F: FnMut(V) -> V2, 

Maps the underlying vertices to a new type and returns the resulting Tri.

pub fn contains(&self, v: &V) -> bool where
    V: Vertex2d, 

Returns true if the given 2D vertex is contained within the 2D Tri.

Example

let a = [-0.5, 0.0];
let b = [0.0, 1.0];
let c = [0.5, -0.75];
let tri = Tri([a, b, c]);
assert!(tri.contains(&[0.0, 0.0]));
assert!(!tri.contains(&[3.0, 3.0]));

pub fn bounding_rect(self) -> Rect<<V as Vertex>::Scalar> where
    V: Vertex2d, 

The bounding Rect of the triangle.

pub fn bounding_cuboid(self) -> Cuboid<<V as Vertex>::Scalar> where
    V: Vertex3d, 

The bounding Rect of the triangle.

Methods from Deref<Target = [V; 3]>

pub fn as_slice(&self) -> &[T]

🔬 This is a nightly-only experimental API. (array_methods)

Returns a slice containing the entire array. Equivalent to &s[..].

pub fn each_ref(&self) -> [&T; N]

🔬 This is a nightly-only experimental API. (array_methods)

Borrows each element and returns an array of references with the same size as self.

Example

#![feature(array_methods)]

let floats = [3.1, 2.7, -1.0];
let float_refs: [&f64; 3] = floats.each_ref();
assert_eq!(float_refs, [&3.1, &2.7, &-1.0]);

This method is particularly useful if combined with other methods, like map. This way, you can avoid moving the original array if its elements are not Copy.

#![feature(array_methods, array_map)]

let strings = ["Ferris".to_string(), "♥".to_string(), "Rust".to_string()];
let is_ascii = strings.each_ref().map(|s| s.is_ascii());
assert_eq!(is_ascii, [true, false, true]);

// We can still access the original array: it has not been moved.
assert_eq!(strings.len(), 3);

Trait Implementations

impl<V> AsRef<[V; 3]> for Tri<V>

pub fn as_ref(&self) -> &[V; 3]

Performs the conversion.

impl<V> AsRef<Tri<V>> for Tri<V>

pub fn as_ref(&self) -> &Tri<V>

Performs the conversion.

impl<V> Clone for Tri<V> where
    V: Clone, 

pub fn clone(&self) -> Tri<V>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<V> Debug for Tri<V> where
    V: Debug, 

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

Formats the value using the given formatter.

impl<V> Deref for Tri<V>

type Target = [V; 3]

The resulting type after dereferencing.

pub fn deref(&self) -> &<Tri<V> as Deref>::Target

Dereferences the value.

impl<V> From<[V; 3]> for Tri<V>

pub fn from(points: [V; 3]) -> Tri<V>

Performs the conversion.

impl<V> From<(V, V, V)> for Tri<V>

pub fn from((V, V, V)) -> Tri<V>

Performs the conversion.

impl From<Tri<Vec2>> for Tri

fn from(tri: Tri<Point2>) -> Self

Performs the conversion.

impl<V> Hash for Tri<V> where
    V: Hash, 

pub 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, 

Feeds a slice of this type into the given Hasher.

impl<V> Into<[V; 3]> for Tri<V>

pub fn into(self) -> [V; 3]

Performs the conversion.

impl<V> Into<(V, V, V)> for Tri<V>

pub fn into(self) -> (V, V, V)

Performs the conversion.

impl<V> PartialEq<Tri<V>> for Tri<V> where
    V: PartialEq<V>, 

pub fn eq(&self, other: &Tri<V>) -> bool

This method tests for self and other values to be equal, and is used by ==.

pub fn ne(&self, other: &Tri<V>) -> bool

This method tests for !=.

impl<V> Copy for Tri<V> where
    V: Copy, 

impl<V> Eq for Tri<V> where
    V: Eq, 

impl<V> StructuralEq for Tri<V>

impl<V> StructuralPartialEq for Tri<V>