Struct nannou::geom::quad::Quad

pub struct Quad<V = Vec3>(pub [V; 4]);

A quad represented by its four vertices.

Implementations

impl<V> Quad<V> where
    V: Vertex, 

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

Produce an iterator yielding each vertex in the Quad.

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

Produce the centroid of the quad, aka the “mean”/“average” vertex.

pub fn triangles(&self) -> (Tri<V>, Tri<V>)

Triangulates the given quad, represented by four points that describe its edges in either clockwise or anti-clockwise order.

Example

The following rectangle

 a        b
  --------
  |      |
  |      |
  |      |
  --------
 d        c

given as

triangles([a, b, c, d])

returns

(Tri([a, b, c]), Tri([a, c, d]))

Here’s a basic code example:

use nannou::geom::{self, pt2, Quad, Tri};

fn main() {
    let a = pt2(0.0, 1.0);
    let b = pt2(1.0, 1.0);
    let c = pt2(1.0, 0.0);
    let d = pt2(0.0, 0.0);
    let quad = Quad([a, b, c, d]);
    let triangles = geom::quad::triangles(&quad);
    assert_eq!(triangles, (Tri([a, b, c]), Tri([a, c, d])));
}

pub fn triangles_iter(&self) -> Triangles<V>

The same as triangles but provided as an Iterator.

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

The bounding Rect of the quad.

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

The bounding Rect of the triangle.

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

Map the Quad’s vertices to a new type.

Methods from Deref<Target = [V; 4]>

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; 4]> for Quad<V> where
    V: Vertex, 

pub fn as_ref(&self) -> &[V; 4]

Performs the conversion.

impl<V> AsRef<Quad<V>> for Quad<V> where
    V: Vertex, 

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

Performs the conversion.

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

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

Returns a copy of the value.

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

Performs copy-assignment from source.

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

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

Formats the value using the given formatter.

impl<V> Deref for Quad<V>

type Target = [V; 4]

The resulting type after dereferencing.

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

Dereferences the value.

impl<V> From<[V; 4]> for Quad<V> where
    V: Vertex, 

pub fn from(points: [V; 4]) -> Quad<V>

Performs the conversion.

impl<V> From<(V, V, V, V)> for Quad<V> where
    V: Vertex, 

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

Performs the conversion.

impl From<Quad<Vec2>> for Quad

fn from(quad: Quad<Point2>) -> Self

Performs the conversion.

impl<V> Hash for Quad<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> Index<usize> for Quad<V> where
    V: Vertex, 

type Output = V

The returned type after indexing.

pub fn index(&self, index: usize) -> &<Quad<V> as Index<usize>>::Output

Performs the indexing (container[index]) operation.

impl<V> Into<[V; 4]> for Quad<V> where
    V: Vertex, 

pub fn into(self) -> [V; 4]

Performs the conversion.

impl<V> Into<(V, V, V, V)> for Quad<V> where
    V: Vertex, 

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

Performs the conversion.

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

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

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

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

This method tests for !=.

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

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

impl<V> StructuralEq for Quad<V>

impl<V> StructuralPartialEq for Quad<V>