156 lines
3.6 KiB
Rust
156 lines
3.6 KiB
Rust
use crate::{Radians, Vector};
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/// An amount of space in 2 dimensions.
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default)]
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pub struct Size<T = f32> {
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/// The width.
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pub width: T,
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/// The height.
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pub height: T,
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}
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impl<T> Size<T> {
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/// Creates a new [`Size`] with the given width and height.
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pub const fn new(width: T, height: T) -> Self {
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Size { width, height }
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}
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}
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impl Size {
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/// A [`Size`] with zero width and height.
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pub const ZERO: Size = Size::new(0., 0.);
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/// A [`Size`] with a width and height of 1 unit.
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pub const UNIT: Size = Size::new(1., 1.);
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/// A [`Size`] with infinite width and height.
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pub const INFINITY: Size = Size::new(f32::INFINITY, f32::INFINITY);
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/// Returns the minimum of each component of this size and another.
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pub fn min(self, other: Self) -> Self {
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Size {
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width: self.width.min(other.width),
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height: self.height.min(other.height),
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}
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}
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/// Returns the maximum of each component of this size and another.
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pub fn max(self, other: Self) -> Self {
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Size {
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width: self.width.max(other.width),
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height: self.height.max(other.height),
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}
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}
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/// Expands this [`Size`] by the given amount.
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pub fn expand(self, other: impl Into<Size>) -> Self {
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let other = other.into();
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Size {
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width: self.width + other.width,
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height: self.height + other.height,
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}
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}
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/// Rotates the given [`Size`] and returns the minimum [`Size`]
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/// containing it.
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pub fn rotate(self, rotation: Radians) -> Size {
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let radians = f32::from(rotation);
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Size {
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width: (self.width * radians.cos()).abs()
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+ (self.height * radians.sin()).abs(),
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height: (self.width * radians.sin()).abs()
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+ (self.height * radians.cos()).abs(),
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}
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}
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}
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impl<T> From<[T; 2]> for Size<T> {
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fn from([width, height]: [T; 2]) -> Self {
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Size { width, height }
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}
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}
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impl<T> From<(T, T)> for Size<T> {
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fn from((width, height): (T, T)) -> Self {
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Self { width, height }
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}
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}
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impl<T> From<Vector<T>> for Size<T> {
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fn from(vector: Vector<T>) -> Self {
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Size {
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width: vector.x,
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height: vector.y,
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}
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}
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}
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impl<T> From<Size<T>> for [T; 2] {
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fn from(size: Size<T>) -> Self {
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[size.width, size.height]
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}
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}
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impl<T> From<Size<T>> for Vector<T> {
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fn from(size: Size<T>) -> Self {
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Vector::new(size.width, size.height)
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}
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}
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impl<T> std::ops::Add for Size<T>
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where
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T: std::ops::Add<Output = T>,
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{
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type Output = Size<T>;
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fn add(self, rhs: Self) -> Self::Output {
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Size {
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width: self.width + rhs.width,
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height: self.height + rhs.height,
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}
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}
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}
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impl<T> std::ops::Sub for Size<T>
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where
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T: std::ops::Sub<Output = T>,
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{
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type Output = Size<T>;
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fn sub(self, rhs: Self) -> Self::Output {
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Size {
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width: self.width - rhs.width,
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height: self.height - rhs.height,
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}
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}
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}
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impl<T> std::ops::Mul<T> for Size<T>
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where
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T: std::ops::Mul<Output = T> + Copy,
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{
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type Output = Size<T>;
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fn mul(self, rhs: T) -> Self::Output {
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Size {
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width: self.width * rhs,
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height: self.height * rhs,
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}
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}
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}
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impl<T> std::ops::Mul<Vector<T>> for Size<T>
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where
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T: std::ops::Mul<Output = T> + Copy,
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{
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type Output = Size<T>;
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fn mul(self, scale: Vector<T>) -> Self::Output {
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Size {
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width: self.width * scale.x,
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height: self.height * scale.y,
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}
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}
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}
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