Creating a Seamless Marching Cubes Animation in Blender with Drivers

Today, I've been learning how to create a marching animation using Drivers in Blender. The goal was to animate a 90-degree rotation that resets every 100 frames, combined with movement that loops every 100 frames. This creates the illusion of cubes "marching forward."

Here are the steps:

1. Setting up the pivot point: Move the cube’s pivot to one of its edges for a natural marching effect.
2. Setting up the drivers:
   1. Rotation: The cube rotates 90 degrees every 100 frames using the modulo operator. The driver expression: (frame % 100) * (radians(frame / 99)) - frame % 100 ensures the motion resets every 100 frames. - radians(frame / 99) smoothly interpolates the 90-degree rotation over 100 frames.
   2. Movement: The cube moves **-2 units every 100 frames** with: ((frame % 1000) // 20) * -2 - frame % 1000 loops the motion every 1000 frames. - // 20 creates step-based movement every 20 frames. - * -2 moves it in the correct direction.
3. Setting up the grid: The Array Modifier couldn’t be used since it moves the whole array as one unit, so I manually duplicated the animated cube into a 20x20 grid.
4. Rendering: Once the marching effect was achieved, I rendered the animation to see the seamless loop in action.

Here's how it looks: