Pavel Zoch shows how you can make an interesting animated background by using fractals to motivate the animation of a series of triangles. Pavel has contributed some tutorials in the past, previously looking at Creating Node-based Materials and Shaders Using cmNodes in Cinema 4D, and another that showed some different ways of distributing or paint instances on a surface in Cinema 4D.
Be sure to check out Pavel at PZDM for more great tutorials and tips.
