Struct Rect 

pub struct Rect {
    pub left: f32,
    pub top: f32,
    pub right: f32,
    pub bottom: f32,
}

矩形，由 (left, top, right, bottom) 定义。 Rectangle defined by (left, top, right, bottom) coordinates.

Fields

left: f32

左边界 / Left edge

top: f32

上边界 / Top edge

right: f32

右边界 / Right edge

bottom: f32

下边界 / Bottom edge

Implementations

impl Rect

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

创建矩形。Creates a rectangle from bounds.

pub fn width(&self) -> f32

宽度。Returns the width.

pub fn height(&self) -> f32

高度。Returns the height.

pub fn is_empty(&self) -> bool

是否为空矩形。Returns true if the rect has zero or negative width/height.

Trait Implementations

impl Clone for Rect

fn clone(&self) -> Rect

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Rect

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

Formats the value using the given formatter.

impl PartialEq for Rect

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Rect

impl StructuralPartialEq for Rect