Here a short and simple tutorial on how to create the Matrix Rain effect using Python.
It also explain how to blur it using the physical render.
This little tutorial is an update on the Tutorial: “How to calculate intersections” posted on my blog August 17, 2012. It was a more complicated tutorial on “How to calculate intersections of 2 lines (splines) using Python and Cinema 4D”.
However, the part on how to check whether the intersection was on the line segment, was not fully correct. Here an update.
Here you can download the tutorial (PDF) and the c4d source file