Support negate on Point()

Author: frmdstryr

declaracad/occ/geom.py

@@ -188,6 +188,9 @@ def __mul__(self, other):
     def __truediv__(self, other):
         return self.__class__(self.x / other, self.y / other, self.z / other)
 
+    def __neg__(self):
+        return self.__class__(-self.x, -self.y, -self.z)
+
     def cross(self, other) -> "Point":
         p = self.__coerce__(other)
         return self.__coerce__(self.proxy.Crossed(p.proxy))

tests/test_2_occ.py

@@ -58,6 +58,8 @@ def test_point():
     assert Point(1, 2, 3) * 2 == Point(2, 4, 6)
     assert Point(2, 4, 6) / 2 == Point(1, 2, 3)
 
+    assert -Point(1, 2, 3) == Point(-1, -2, -3)
+
     with pytest.raises(TypeError):
         Point(1, 2, 3) / Point(1, 2, 3)