Added escalating difficulty

1 files changed, 5 insertions, 1 deletions

diff --git a/src/geometry.rs b/src/geometry.rs
index be903d7..c49fe2a 100644
--- a/src/geometry.rs
+++ b/src/geometry.rs
@@ -8,8 +8,12 @@ pub struct Vec2d {
 
 impl Vec2d {
     pub fn distance(&self, other: Vec2d) -> f64 {
-        ((other.x-self.x).powi(2) + (other.y-self.y).powi(2)).sqrt()
+        self.distance_squared(other).sqrt()
     }
+    pub fn distance_squared(&self, other: Vec2d) -> f64 {
+        ((other.x-self.x).powi(2) + (other.y-self.y).powi(2))
+    }
+
     pub fn angle(&self) -> f64 {
         self.y.atan2(self.x)
     }