I recently came across a project
http://www.flight404.com/p5/magnets3_3D/
with source code here
http://www.flight404.com/p5/magnets3_3D/magnets_3_3D.pde

In attempting to update the code to a newer version of processing and I currently have the following changes:

//////////////////////////////////

I replaced void loop() with void draw()
I replaced push with pushMatrix();
I replaced pop with popMatrix();

I added import processing.opengl.*; at the top
I added size(xSize, ySize, OPENGL); to void setup()

I added PImage myField; and PImage myFieldMask; to the top

I took out the void brightToAlpha() code

I took out
   myField = loadImage("field.gif");
   brightToAlpha(myField);
from void setup() and put
   myField = loadImage("field.jpg");
   myFieldMask = loadImage("fieldMask.jpg");
   myField.mask(myFieldMask);
in its place

//////////////////////////////////

Does anyone have any suggestions on how to make the code run correctly? Thank you so much for your help. I'm very excited to learn all I can.

-alex

I tried it also but could not run it.
Have you done more or got a better version ?

alphachapmtl

PS, I found some answers at the bottom of this webpage:

http://www.flight404.com/blog/?cat=1&paged=2

or here:

http://www.flight404.com/blog/?p=71

check this site:  http://www.flight404.com/version7/