Struct Rect 

pub struct Rect {
    pub x: f32,
    pub y: f32,
    pub w: f32,
    pub h: f32,
}

2D rectangle: position + size.

represents a bounding box with top-left corner at (x, y) and dimensions (w, h). useful for collision detection and UI layout.

example

let rect = Rect::new(0.0, 0.0, 100.0, 50.0);
if rect.contains(mouse_pos) {
    // clicked!
}

Fields

x: f32

x coordinate of top-left corner

y: f32

y coordinate of top-left corner

w: f32

width

h: f32

height

Implementations

impl Rect

pub const fn new(x: f32, y: f32, w: f32, h: f32) -> Self

create a new rectangle from top-left corner and size.

pub fn from_center(center: Vec2, half_size: Vec2) -> Self

create a rectangle from center point and half-size extents.

pub fn contains(&self, point: Vec2) -> bool

check if a point lies inside this rectangle.

inclusive of all edges (touching counts as inside). contrast with intersects, which is exclusive (touching edges do not count as overlap).

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

check if this rectangle overlaps another.

exclusive of touching edges (two rects that share only an edge do not overlap). contrast with contains, which is inclusive.

pub fn center(&self) -> Vec2

get the center point of this rectangle.

pub const fn top_left(&self) -> Vec2

get the top-left corner position.

pub const fn bottom_right(&self) -> Vec2

get the bottom-right corner position.

pub fn inflate(&mut self, dx: f32, dy: f32)

expand or shrink the rect by the given deltas on all sides.

pub fn clamp(&mut self, within: &Self)

constrain this rect to lie fully within another rect. clamps both position and size so the right/bottom edges don’t exceed the boundary.

pub fn collide_point(&self, point: Vec2) -> bool

alias for Rect::contains — point collision check.

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

alias for Rect::intersects — rect collision check.

pub fn union(&self, other: &Self) -> Self

return the smallest rect that contains both this rect and another.

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 Copy for Rect

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 StructuralPartialEq for Rect