Fix numpy reshape error in opengl_vectorized_mobject for transforming mobjects with different number of subpaths

manim/mobject/opengl/opengl_vectorized_mobject.py

@@ -1200,7 +1200,7 @@ def align_points(self, vmobject):
         def get_nth_subpath(path_list, n):
             if n >= len(path_list):
                 # Create a null path at the very end
-                return [path_list[-1][-1]] * nppc
+                return np.array([path_list[-1][-1]] * nppc)
             path = path_list[n]
             # Check for useless points at the end of the path and remove them
             # https://github.com/ManimCommunity/manim/issues/1959

tests/opengl/test_opengl_vectorized_mobject.py

@@ -3,7 +3,7 @@
 import numpy as np
 import pytest
 
-from manim import Circle, Line, Square, VDict, VGroup
+from manim import Circle, Line, Square, Text, VDict, VGroup
 from manim.mobject.opengl.opengl_mobject import OpenGLMobject
 from manim.mobject.opengl.opengl_vectorized_mobject import OpenGLVMobject
 
@@ -32,6 +32,14 @@ def test_opengl_vmobject_point_from_propotion(using_opengl_renderer):
         obj.point_from_proportion(0)
 
 
+def test_opengl_align_family_and_data(using_opengl_renderer):
+    text_c = Text("c")
+    text_o = Text("o")
+    assert text_c.get_all_points().shape != text_o.get_all_points().shape
+    text_c.align_data_and_family(text_o)
+    assert text_c.get_all_points().shape == text_o.get_all_points().shape
+
+
 def test_vgroup_init(using_opengl_renderer):
     """Test the VGroup instantiation."""
     VGroup()