C4DTools.net posts a freebee from Dominik Ruckli who offers up his Ray-Connector Python Plugin for Cinema 4D which will allow you to connect C4D Thinking Particles with splines that will get you a “After Effects Plexus” type look quite easily.
The Ray-Connector is a python-plugin which allows you to connect Thinking Particles with Splines
Ray-Connector will allow you to adjust the maximal connection distance between the particles, as well as the number of spline connections for each. It also has animatable settings that can be tweaked and adjusted, and can be made renderable by using the Cinema 4D Hair module or even Sweep-NURBS, allowing you to convert the result to an editable spline object in the viewport.
To learn more about Ray-Connector for Cinema 4D, check the page here.
