implement Vector operators __add__, __sub__, __mul__, __truediv__

cadquery/occ_impl/geom.py

@@ -80,13 +80,25 @@ class Vector(object):
     def sub(self, v):
         return Vector(self.wrapped.Subtracted(v.wrapped))
 
+    def __sub__(self, v):
+        return self.sub(v)
+
     def add(self, v):
         return Vector(self.wrapped.Added(v.wrapped))
 
+    def __add__(self, v):
+        return self.add(v)
+
     def multiply(self, scale):
         """Return a copy multiplied by the provided scalar"""
         return Vector(self.wrapped.Multiplied(scale))
 
+    def __mul__(self, scale):
+        return self.multiply(scale)
+
+    def __truediv__(self, denom):
+        return self.multiply(1.0 / denom)
+
     def normalized(self):
         """Return a normalized version of this vector"""
         return Vector(self.wrapped.Normalized())

tests/TestCadObjects.py

@@ -108,6 +108,19 @@ class TestCadObjects(BaseTest):
         result = Vector(1, 2, 0) + Vector(0, 0, 3)
         self.assertTupleAlmostEquals((1.0, 2.0, 3.0), result.toTuple(), 3)
 
+    def testVectorOperators(self):
+        result = Vector(1, 1, 1) + Vector(2, 2, 2)
+        self.assertEqual(Vector(3, 3, 3), result)
+
+        result = Vector(1, 2, 3) - Vector(3, 2, 1)
+        self.assertEqual(Vector(-2, 0, 2), result)
+
+        result = Vector(1, 2, 3) * 2
+        self.assertEqual(Vector(2, 4, 6), result)
+
+        result = Vector(2, 4, 6) / 2
+        self.assertEqual(Vector(1, 2, 3), result)
+
     def testVectorEquals(self):
         a = Vector(1, 2, 3)
         b = Vector(1, 2, 3)