Refactor sprite from _x, _y, _z attributes to _position tuple attribute

pyglet/experimental/geoshader_sprite.py

@@ -237,7 +237,7 @@ def __hash__(self):
 class Sprite(event.EventDispatcher):
     __slots__ = ['_batch', '_animation', '_frame_index', '_paused', '_rotation',
                  '_rgba', '_scale', '_scale_x', '_scale_y', '_visible',
-                 '_vertex_list', 'group_class', '_x', '_y', '_z', '_img', '_texture',
+                 '_vertex_list', 'group_class', '_position', '_img', '_texture',
                  '_program', '_user_group', '_group', '_subpixel',
                  '_position_setter']
 
@@ -289,9 +289,7 @@ def __init__(self,
         self._vertex_list = None
         self.group_class = SpriteGroup
 
-        self._x = x
-        self._y = y
-        self._z = z
+        self._position = (x, y, z)
         self._img = img
 
         if isinstance(img, image.Animation):
@@ -322,7 +320,7 @@ def _create_vertex_list(self):
         texture = self._texture
         self._vertex_list = self.program.vertex_list(
             1, GL_POINTS, self._batch, self._group,
-            position=('f', (self._x, self._y, self._z)),
+            position=('f', self._position),
             size=('f', (texture.width, texture.height, 1, 1)),
             color=('Bn', self._rgba),
             texture_uv=('f', texture.uv),
@@ -477,11 +475,11 @@ def position(self):
             `z` : int
                 Z coordinate of the sprite.
         """
-        return self._x, self._y, self._z
+        return self._position
 
     @position.setter
     def position(self, position):
-        self._x, self._y, self._z = position
+        self._position = position
         self._vertex_list.position[:] = position
 
     @property
@@ -490,38 +488,44 @@ def x(self):
 
         :type: int
         """
-        return self._x
+        return self._position[0]
 
     @x.setter
     def x(self, x):
-        self._x = x
-        self._vertex_list.position[:] = x, self._y, self._z
+        _, y, z = self._position
+        position = x, y, z
+        self._position = position
+        self._vertex_list.position[:] = position
 
     @property
     def y(self):
         """Y coordinate of the sprite.
 
         :type: int
         """
-        return self._y
+        return self._position[1]
 
     @y.setter
     def y(self, y):
-        self._y = y
-        self._vertex_list.position[:] = self._x, y, self._z
+        x, _, z = self._position
+        position = x, y, z
+        self._position = position
+        self._vertex_list.position[:] = position
 
     @property
     def z(self):
         """Z coordinate of the sprite.
 
         :type: int
         """
-        return self._z
+        return self._position[2]
 
     @z.setter
     def z(self, z):
-        self._z = z
-        self._vertex_list.position[:] = self._x, self._y, z
+        x, y, _ = self._position
+        position = x, y, z
+        self._position = position
+        self._vertex_list.position[:] = position
 
     @property
     def rotation(self):