initial commit

vec.py

@@ -0,0 +1,27 @@
+from __future__ import annotations
+from math import sqrt
+
+class Vec:
+    def __init__(self, x: float = 0, y: float = 0) -> None:
+        self.x = x
+        self.y = y
+    
+    def __add__(self, v: Vec) -> Vec:
+        return Vec(self.x+v.x, self.y+v.y)
+    
+    def __sub__(self, v: Vec) -> Vec:
+        return Vec(self.x-v.x, self.y-v.y)
+    
+    def __mul__(self, f: float) -> Vec:
+        return Vec(self.x*f, self.y*f)
+    
+    def __truediv__(self, f: float) -> Vec:
+        return Vec(self.x/f, self.y/f)
+    
+    def mag(self) -> float:
+        return sqrt(self.x**2 + self.y**2)
+    
+    def norm(self) -> Vec:
+        mag = self.mag()
+        if mag == 0: return Vec()
+        return self/mag