Struct Rect 

#[repr(C)]
pub struct Rect {
    pub x0: f32,
    pub y0: f32,
    pub x1: f32,
    pub y1: f32,
}

An axis-aligned rectangle in pixels, y down, stored as its four edges.

Edges, not origin plus size, so rectangles built from shared edges tile exactly: with half-open contains, a point on a shared edge belongs to exactly one of them, even after both are translated by the same amount. (Origin plus size recomputes x + width, which can miss the original edge by a rounding step.)

A rectangle whose right edge is not past its left (or bottom past top), or with a NaN edge, is empty and contains no point.

Fields

x0: f32

Left edge.

y0: f32

Top edge.

x1: f32

Right edge.

y1: f32

Bottom edge.

Implementations

impl Rect

pub const EVERYTHING: Self

Every point: what a clip that clips nothing is.

pub fn new(x: f32, y: f32, width: f32, height: f32) -> Self

The rectangle with top-left corner (x, y) and size width x height.

pub fn from_edges(left: f32, top: f32, right: f32, bottom: f32) -> Self

The rectangle spanning the given edges, in either order. NaN edges are kept, giving an empty rectangle rather than a silently different one.

pub fn left(&self) -> f32

Left edge.

pub fn top(&self) -> f32

Top edge.

pub fn right(&self) -> f32

Right edge.

pub fn bottom(&self) -> f32

Bottom edge.

pub fn width(&self) -> f32

Distance between the left and right edges.

pub fn height(&self) -> f32

Distance between the top and bottom edges.

pub fn is_empty(&self) -> bool

Whether the rectangle covers no area (also true with a NaN edge).

pub fn contains(&self, point: Point) -> bool

Whether point lies inside: left and top edges included, right and bottom not, so a point on an edge shared by two rectangles belongs to exactly one.

pub fn translate(self, by: Point) -> Self

The rectangle moved by by.

pub fn to_xywh(self) -> [f32; 4]

[x, y, width, height], the layout GPU instances use.

pub fn origin(&self) -> Point

The top-left corner.

pub fn size(&self) -> Size

Width and height.

pub fn intersect(self, other: Self) -> Self

The area both rectangles cover; empty if they do not overlap or either is empty.

Trait Implementations

impl Clone for Rect

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 Rect

impl Debug for Rect

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

Formats the value using the given formatter.

impl Default for Rect

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Rect

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Rect