Updated how the vertices and matrices can be accessed. That is via indices ([x][y]) or just by named properties (like x or y).

vectors.py

@@ -1,15 +1,32 @@
-class Vector4d:
-	def __init__(self, x, y, z, w):
-		self.x = x
-		self.y = y
-		self.z = z
-		self.w = w
+class Vector2d:
+	def __init__(self, x, y):
+		self.points = [x, y]
 		
-class Vector3d:
+	@property
+	def x(self):
+		return self.points[0]
+		
+	@x.setter
+	def x(self, value):
+		self.points[0] = value
+
+	@property
+	def y(self):
+		return self.points[1]
+		
+	@y.setter
+	def y(self, value):
+		self.points[1] = value
+		
+	def __getitem__(self, key):
+		return self.points[key]
+		
+	def __setitem__(self, key, value):
+		self.points[key] = value
+
+class Vector3d(Vector2d):
 	def __init__(self, x, y, z):
-		self.x = x
-		self.y = y
-		self.z = z
+		self.points = [x, y, z]
 		
 	def cross_product(self, vector3d):
 		# Returns a line that is perpendicular to the parameter
@@ -25,8 +42,23 @@ class Vector3d:
 		# Returns a scalar that defines how similar two
 		# vectors are to one another.
 		return self.x * vector3d.x + self.y * vector3d.y + self.z * vector3d.z
+
+	@property
+	def z(self):
+		return self.points[2]
 		
-class Vector2d:
-	def __init__(self, x, y):
-		self.x = x
-		self.y = y
+	@z.setter
+	def z(self, value):
+		self.points[2] = value
+			
+class Vector4d(Vector3d):
+	def __init__(self, x, y, z, w):
+		self.points = [x, y, z, w]
+		
+	@property
+	def w(self):
+		return self.points[3]
+		
+	@w.setter
+	def w(self, value):
+		self.points[3] = value