1 files changed, 26 insertions, 0 deletions
diff --git a/src/geometry.rs b/src/geometry.rs
index c49fe2a..f84a973 100644
--- a/src/geometry.rs
+++ b/src/geometry.rs
@@ -14,9 +14,24 @@ impl Vec2d {
         ((other.x-self.x).powi(2) + (other.y-self.y).powi(2))
     }
 
+    pub fn magnitude(&self) -> f64 {
+        self.magnitude_squared().sqrt()
+    }
+    pub fn magnitude_squared(&self) -> f64 {
+        self.x.powi(2) + self.y.powi(2)
+    }
+
     pub fn angle(&self) -> f64 {
         self.y.atan2(self.x)
     }
+
+    pub fn unit(&self) -> Vec2d {
+        let mag = self.magnitude();
+        Vec2d {
+            x: self.x / mag,
+            y: self.y / mag
+        }
+    }
 }
 
 impl Add for Vec2d {
@@ -51,3 +66,14 @@ impl Neg for Vec2d {
         }
     }
 }
+
+impl Mul<f64> for Vec2d {
+    type Output = Vec2d;
+
+    fn mul(self, rhs: f64) -> Self {
+        Vec2d {
+            x: self.x * rhs,
+            y: self.y * rhs
+        }
+    }
+}