Add dimension indicator without direct value editing

1 files changed, 21 insertions, 2 deletions

diff --git a/src/math/vec2.rs b/src/math/vec2.rs
index ea549d7..7834ffc 100644
--- a/src/math/vec2.rs
+++ b/src/math/vec2.rs
@@ -1,11 +1,12 @@
 use crate::math::Rect;
 use alga::general::{ClosedAdd, ClosedSub};
 use nalgebra::{RealField, Scalar};
+use num_traits::One;
 use serde::{Deserialize, Serialize};
 use std::cmp::Ordering;
 use std::convert::{From, Into};
-use std::fmt;
-use std::ops::{Add, AddAssign, Div, Mul, Sub, SubAssign};
+use std::ops::{Add, AddAssign, Div, Mul, MulAssign, Neg, Sub, SubAssign};
+use std::{fmt, mem};
 
 #[derive(Clone, Copy, Debug, Default, PartialEq, PartialOrd, Serialize, Deserialize, Eq)]
 pub struct Vec2<T: Scalar + Copy> {
@@ -24,6 +25,24 @@ impl<T: Scalar + Copy> Vec2<T> {
     {
         (self.x * self.x + self.y * self.y).sqrt()
     }
+
+    pub fn rotated_90_clockwise(mut self) -> Vec2<T>
+    where
+        T: One + Neg<Output = T> + MulAssign,
+    {
+        mem::swap(&mut self.x, &mut self.y);
+        self.y *= -T::one();
+        self
+    }
+
+    pub fn rotated_90_counterclockwise(mut self) -> Vec2<T>
+    where
+        T: One + Neg<Output = T> + MulAssign,
+    {
+        mem::swap(&mut self.x, &mut self.y);
+        self.x *= -T::one();
+        self
+    }
 }
 
 // This is sad, but also sadly necessary :/