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use crate::{Point, Size, Vector};
#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub struct Rectangle<T = f32> {
pub x: T,
pub y: T,
pub width: T,
pub height: T,
}
impl Rectangle<f32> {
pub fn new(top_left: Point, size: Size) -> Self {
Self {
x: top_left.x,
y: top_left.y,
width: size.width,
height: size.height,
}
}
pub fn with_size(size: Size) -> Self {
Self {
x: 0.0,
y: 0.0,
width: size.width,
height: size.height,
}
}
pub fn center(&self) -> Point {
Point::new(self.center_x(), self.center_y())
}
pub fn center_x(&self) -> f32 {
self.x + self.width / 2.0
}
pub fn center_y(&self) -> f32 {
self.y + self.height / 2.0
}
pub fn position(&self) -> Point {
Point::new(self.x, self.y)
}
pub fn size(&self) -> Size {
Size::new(self.width, self.height)
}
pub fn contains(&self, point: Point) -> bool {
self.x <= point.x
&& point.x <= self.x + self.width
&& self.y <= point.y
&& point.y <= self.y + self.height
}
pub fn intersection(
&self,
other: &Rectangle<f32>,
) -> Option<Rectangle<f32>> {
let x = self.x.max(other.x);
let y = self.y.max(other.y);
let lower_right_x = (self.x + self.width).min(other.x + other.width);
let lower_right_y = (self.y + self.height).min(other.y + other.height);
let width = lower_right_x - x;
let height = lower_right_y - y;
if width > 0.0 && height > 0.0 {
Some(Rectangle {
x,
y,
width,
height,
})
} else {
None
}
}
pub fn snap(self) -> Rectangle<u32> {
Rectangle {
x: self.x as u32,
y: self.y as u32,
width: self.width.ceil() as u32,
height: self.height.ceil() as u32,
}
}
}
impl std::ops::Mul<f32> for Rectangle<f32> {
type Output = Self;
fn mul(self, scale: f32) -> Self {
Self {
x: self.x as f32 * scale,
y: self.y as f32 * scale,
width: self.width * scale,
height: self.height * scale,
}
}
}
impl From<Rectangle<u32>> for Rectangle<f32> {
fn from(rectangle: Rectangle<u32>) -> Rectangle<f32> {
Rectangle {
x: rectangle.x as f32,
y: rectangle.y as f32,
width: rectangle.width as f32,
height: rectangle.height as f32,
}
}
}
impl<T> std::ops::Add<Vector<T>> for Rectangle<T>
where
T: std::ops::Add<Output = T>,
{
type Output = Rectangle<T>;
fn add(self, translation: Vector<T>) -> Self {
Rectangle {
x: self.x + translation.x,
y: self.y + translation.y,
..self
}
}
}