For this animation I used the python script node of the Animation-Node-Addon to create a list of coordinates for a bezier-curve.
you can download the blend file here
First script node and connected it to a loop
I used the following script to return 3 float lists containing the x, y and z coordinates of the control points.
import math lenght = 100 zlist = [ x/4 for x in range(-lenght,lenght)] ylist = [math.sin(x) * math.exp( - x**2/1000) for x in range(-lenght,lenght)] xlist = [math.cos(x) * math.exp( - x**2/1000) for x in range(-lenght,lenght)]
Then I used a loop to add the points to the curve using this node setup. I´m pretty sure this is not the most elegant way to solve the problem, but it does the job
The I duplicated the resulting curve and used a emission shader on the first one and a slightly transparent diffuse shader on the second curve. The animation is created using a build modifier on each node.
AN experiment - delayed instanciation
Animation Node experiment - circular sound visualizer
Animation Node experiment - polar coordinates
Animation Node experiment - cube grid