Bug fix in camera/data_type.py (#2047)

* Bug fix in camera/data_type.py

* Give WindowProxy a current_camera property

Author: DragonMoffon

arcade/camera/data_types.py

@@ -73,9 +73,9 @@ def constrain_camera_data(data: CameraData, forward_priority: bool = False):
     up_vec = Vec3(*data.up).normalize()
     right_vec = forward_vec.cross(up_vec).normalize()
     if forward_priority:
-        up_vec = forward_vec.cross(right_vec)
+        up_vec = right_vec.cross(forward_vec)
     else:
-        forward_vec = up_vec.cross(right_vec)
+        forward_vec = right_vec.cross(up_vec)
 
     data.forward = (forward_vec.x, forward_vec.y, forward_vec.z)
     data.up = (up_vec.x, up_vec.y, up_vec.z)

tests/conftest.py

@@ -160,6 +160,14 @@ def background_color(self):
     def background_color(self, color):
         self.window.background_color = color
 
+    @property
+    def current_camera(self):
+        return self.window.current_camera
+
+    @current_camera.setter
+    def current_camera(self, new_camera):
+        self.window.current_camera = new_camera
+
     def clear(self, *args, **kwargs):
         return self.window.clear(*args, **kwargs)