Simple use of recursion to make a warped tunnelling effect with circles using Processing. Processing sketch/source and compiled executable can be found below.

• Starts off slowly iterating over the four different rendering modes.
• Use keys 1, 2, 3 and 4 to change the visual/render mode (dynamic rainbow, static rainbow, dynamic greyscale, static greyscale).
• Use left and right arrow keys to switch to a different motion path (there are 4 motion paths, each with varied use of the trigonometric functions sin, cos and tan).

TODO: Click to download application & source files