Fixed an off-by-one error

05-geometrien/support.py

@@ -274,7 +274,7 @@ class Trajectory:
                 "method": "restyle",
                 "args": [{"visible": [False] * mesh_elements_cumulative[-1]}]
             }
-            step["args"][0]["visible"][mesh_elements_cumulative[i]:mesh_elements_cumulative[i+1]] = [True] * mesh_elements[i]
+            step["args"][0]["visible"][mesh_elements_cumulative[i]:mesh_elements_cumulative[i+1]] = [True] * mesh_elements[i+1]
             slider_steps.append(step)
         
         # Make the slider